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Build Information

Failed to build MarkupEditor, reference main (ee687f), with Swift 6.1 for macOS (SPM) on 17 Oct 2026 17:06:10 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.1.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/stevengharris/MarkupEditor.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/stevengharris/MarkupEditor
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at ee687f5 Bump to markupeditor-base 0.9.52
Cloned https://github.com/stevengharris/MarkupEditor.git
Revision (git rev-parse @):
ee687f59188e329d14e986e85efd8515de6dfdb0
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/stevengharris/MarkupEditor.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/stevengharris/MarkupEditor.git
https://github.com/stevengharris/MarkupEditor.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MarkupEditor",
  "name" : "MarkupEditor",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "17.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "17.0"
    },
    {
      "name" : "macos",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "MarkupEditor",
      "targets" : [
        "MarkupEditor"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5",
    "6"
  ],
  "targets" : [
    {
      "c99name" : "SwiftTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftTests",
      "path" : "MarkupEditorTests/SwiftTests",
      "sources" : [
        "PasteImage.swift",
        "PluginFileEntryTests.swift"
      ],
      "target_dependencies" : [
        "MarkupEditor",
        "SharedTest"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SharedTest",
      "module_type" : "SwiftTarget",
      "name" : "SharedTest",
      "path" : "MarkupEditorTests/SharedTest",
      "sources" : [
        "HtmlTest.swift",
        "HtmlTestPage.swift",
        "HtmlTestSuite.swift"
      ],
      "target_dependencies" : [
        "MarkupEditor"
      ],
      "type" : "library"
    },
    {
      "c99name" : "MarkupEditor",
      "module_type" : "SwiftTarget",
      "name" : "MarkupEditor",
      "path" : "MarkupEditor",
      "product_memberships" : [
        "MarkupEditor"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditor/Resources/behaviorconfig.json",
          "rule" : {
            "process" : {
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          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditor/Resources/keymapconfig.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditor/Resources/markup-editor.js",
          "rule" : {
            "process" : {
            }
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        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditor/Resources/toolbarconfig.json",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Divs/HtmlButton.swift",
        "Divs/HtmlButtonGroup.swift",
        "Divs/HtmlDiv.swift",
        "Divs/HtmlDivHolder.swift",
        "Divs/MarkupDivStructure.swift",
        "Divs/MarkupWKWebView+DivExtensions.swift",
        "Extensions/Logger+Extensions.swift",
        "Extensions/String+Extensions.swift",
        "Extensions/UIView+Extensions.swift",
        "Extensions/View+Extensions.swift",
        "MarkupCoordinator.swift",
        "MarkupDelegate.swift",
        "MarkupEditor.swift",
        "MarkupEditorUIView.swift",
        "MarkupEditorView.swift",
        "MarkupWKWebView.swift",
        "MarkupWKWebViewConfiguration.swift",
        "MarkupWKWebViewRepresentable.swift",
        "Plugin.swift",
        "Selection/FormatContext.swift",
        "Selection/ListContext.swift",
        "Selection/SelectionState.swift",
        "Selection/StyleContext.swift",
        "Toolbars/CorrectionToolbar.swift",
        "Toolbars/FormatToolbar.swift",
        "Toolbars/InsertToolbar.swift",
        "Toolbars/LabeledToolbar.swift",
        "Toolbars/MarkupToolbar.swift",
        "Toolbars/MarkupToolbarUIView.swift",
        "Toolbars/StyleToolbar.swift",
        "Toolbars/TableToolbar.swift",
        "Utilities/Blur.swift",
        "Utilities/Config/BehaviorConfig.swift",
        "Utilities/Config/JSONConfigurable.swift",
        "Utilities/Config/KeymapConfig.swift",
        "Utilities/Config/ToolbarConfig.swift",
        "Utilities/EditableAttributes.swift",
        "Utilities/ForcePopoverModifier.swift",
        "Utilities/HeaderInfo.swift",
        "Utilities/Icons.swift",
        "Utilities/ImageViewController.swift",
        "Utilities/LinkViewController.swift",
        "Utilities/MarkupMenu.swift",
        "Utilities/PlatformTypes.swift",
        "Utilities/PopoverHostingController.swift",
        "Utilities/TableSizer.swift",
        "Utilities/ToolbarContents.swift",
        "Utilities/ToolbarImageButton.swift",
        "Utilities/ToolbarStyle.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "BaseTests",
      "module_type" : "SwiftTarget",
      "name" : "BaseTests",
      "path" : "MarkupEditorTests/BaseTests",
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/baseline.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/code-language-menu.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/code-language-tab.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/code-language.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/correction.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/denting-multi.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/denting.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/exit-table.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/format-multi.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/format-off.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/format-on.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/format-selection.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/get-headers.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/highlighting.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/insert-image-url.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/insert-internal-link.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/insert-link.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/insert-table.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/justify-column.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/list-enter-collapsed.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/list-enter-range.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/list-multi.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/list.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/markdown-shorthand.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/paste-html-preprocessing.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/paste-html.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/paste-text-preprocessing.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/paste-text.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/pluginregistry.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/search.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/style-multi.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/style.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/table-actions.json",
          "rule" : {
            "process" : {
            }
          }
        },
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/MarkupEditorTests/BaseTests/Data/type-text.json",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "Baseline.swift",
        "CodeLanguage.swift",
        "CodeLanguageMenu.swift",
        "CodeLanguageTab.swift",
        "Correction.swift",
        "Denting.swift",
        "DentingMulti .swift",
        "FormatMulti.swift",
        "FormatOff.swift",
        "FormatOn.swift",
        "FormatSelection.swift",
        "GetHeaders.swift",
        "Highlighting.swift",
        "InsertImageUrl.swift",
        "InsertInternalLink.swift",
        "InsertLink.swift",
        "InsertTable.swift",
        "JustifyColumn.swift",
        "List.swift",
        "ListEnterCollapsed.swift",
        "ListEnterRange.swift",
        "ListMulti.swift",
        "PasteHtml.swift",
        "PasteHtmlPreprocessing.swift",
        "PasteText.swift",
        "PasteTextPreprocessing.swift",
        "PluginRegistry.swift",
        "Search.swift",
        "Style.swift",
        "StyleMulti.swift",
        "TableActions.swift"
      ],
      "target_dependencies" : [
        "MarkupEditor",
        "SharedTest"
      ],
      "type" : "test"
    }
  ],
  "tools_version" : "6.1"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats
Building for debugging...
[0/7] Write sources
[2/7] Copying markup-editor.js
[2/7] Copying behaviorconfig.json
[3/7] Copying toolbarconfig.json
[4/7] Copying keymapconfig.json
[6/7] Write swift-version-2F0A5646E1D333AE.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[8/53] Emitting module MarkupEditor
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
[9/58] Compiling MarkupEditor InsertToolbar.swift
[10/58] Compiling MarkupEditor LabeledToolbar.swift
[11/58] Compiling MarkupEditor MarkupToolbar.swift
[12/58] Compiling MarkupEditor MarkupToolbarUIView.swift
[13/58] Compiling MarkupEditor StyleToolbar.swift
[14/58] Compiling MarkupEditor TableSizer.swift
[15/58] Compiling MarkupEditor ToolbarContents.swift
[16/58] Compiling MarkupEditor ToolbarImageButton.swift
[17/58] Compiling MarkupEditor ToolbarStyle.swift
[18/58] Compiling MarkupEditor resource_bundle_accessor.swift
[19/58] Compiling MarkupEditor HtmlButton.swift
[20/58] Compiling MarkupEditor HtmlButtonGroup.swift
[21/58] Compiling MarkupEditor HtmlDiv.swift
[22/58] Compiling MarkupEditor HtmlDivHolder.swift
[23/58] Compiling MarkupEditor MarkupDivStructure.swift
[24/58] Compiling MarkupEditor ToolbarConfig.swift
[25/58] Compiling MarkupEditor EditableAttributes.swift
[26/58] Compiling MarkupEditor ForcePopoverModifier.swift
[27/58] Compiling MarkupEditor HeaderInfo.swift
[28/58] Compiling MarkupEditor Icons.swift
[29/58] Compiling MarkupEditor ImageViewController.swift
[30/58] Compiling MarkupEditor LinkViewController.swift
[31/58] Compiling MarkupEditor MarkupMenu.swift
[32/58] Compiling MarkupEditor PlatformTypes.swift
[33/58] Compiling MarkupEditor PopoverHostingController.swift
[34/58] Compiling MarkupEditor TableToolbar.swift
[35/58] Compiling MarkupEditor Blur.swift
[36/58] Compiling MarkupEditor BehaviorConfig.swift
[37/58] Compiling MarkupEditor JSONConfigurable.swift
[38/58] Compiling MarkupEditor KeymapConfig.swift
[39/58] Compiling MarkupEditor MarkupWKWebView+DivExtensions.swift
[40/58] Compiling MarkupEditor Logger+Extensions.swift
[41/58] Compiling MarkupEditor String+Extensions.swift
[42/58] Compiling MarkupEditor UIView+Extensions.swift
[43/58] Compiling MarkupEditor View+Extensions.swift
[44/58] Compiling MarkupEditor ListContext.swift
[45/58] Compiling MarkupEditor SelectionState.swift
[46/58] Compiling MarkupEditor StyleContext.swift
[47/58] Compiling MarkupEditor CorrectionToolbar.swift
[48/58] Compiling MarkupEditor FormatToolbar.swift
[49/58] Compiling MarkupEditor MarkupWKWebView.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
[50/58] Compiling MarkupEditor MarkupWKWebViewConfiguration.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
[51/58] Compiling MarkupEditor MarkupWKWebViewRepresentable.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
[52/58] Compiling MarkupEditor Plugin.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
[53/58] Compiling MarkupEditor FormatContext.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
[54/58] Compiling MarkupEditor MarkupCoordinator.swift
[55/58] Compiling MarkupEditor MarkupDelegate.swift
[56/58] Compiling MarkupEditor MarkupEditor.swift
[57/58] Compiling MarkupEditor MarkupEditorUIView.swift
[58/58] Compiling MarkupEditor MarkupEditorView.swift
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-2F0A5646E1D333AE.txt
[2/47] Compiling MarkupEditor InsertToolbar.swift
[3/47] Compiling MarkupEditor LabeledToolbar.swift
[4/47] Compiling MarkupEditor MarkupToolbar.swift
[5/47] Compiling MarkupEditor MarkupToolbarUIView.swift
[6/47] Compiling MarkupEditor StyleToolbar.swift
[7/52] Compiling MarkupEditor HtmlButton.swift
[8/52] Compiling MarkupEditor HtmlButtonGroup.swift
[9/52] Compiling MarkupEditor HtmlDiv.swift
[10/52] Compiling MarkupEditor HtmlDivHolder.swift
[11/52] Compiling MarkupEditor MarkupDivStructure.swift
[12/52] Compiling MarkupEditor ImageViewController.swift
[13/52] Compiling MarkupEditor LinkViewController.swift
[14/52] Compiling MarkupEditor MarkupMenu.swift
[15/52] Compiling MarkupEditor PlatformTypes.swift
[16/52] Compiling MarkupEditor PopoverHostingController.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[17/52] Emitting module MarkupEditor
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
[18/52] Compiling MarkupEditor ListContext.swift
[19/52] Compiling MarkupEditor SelectionState.swift
[20/52] Compiling MarkupEditor StyleContext.swift
[21/52] Compiling MarkupEditor CorrectionToolbar.swift
[22/52] Compiling MarkupEditor FormatToolbar.swift
[23/52] Compiling MarkupEditor ToolbarConfig.swift
[24/52] Compiling MarkupEditor EditableAttributes.swift
[25/52] Compiling MarkupEditor ForcePopoverModifier.swift
[26/52] Compiling MarkupEditor HeaderInfo.swift
[27/52] Compiling MarkupEditor Icons.swift
[28/52] Compiling MarkupEditor MarkupWKWebView+DivExtensions.swift
[29/52] Compiling MarkupEditor Logger+Extensions.swift
[30/52] Compiling MarkupEditor String+Extensions.swift
[31/52] Compiling MarkupEditor UIView+Extensions.swift
[32/52] Compiling MarkupEditor View+Extensions.swift
[33/52] Compiling MarkupEditor TableSizer.swift
[34/52] Compiling MarkupEditor ToolbarContents.swift
[35/52] Compiling MarkupEditor ToolbarImageButton.swift
[36/52] Compiling MarkupEditor ToolbarStyle.swift
[37/52] Compiling MarkupEditor resource_bundle_accessor.swift
[38/52] Compiling MarkupEditor MarkupCoordinator.swift
[39/52] Compiling MarkupEditor MarkupDelegate.swift
[40/52] Compiling MarkupEditor MarkupEditor.swift
[41/52] Compiling MarkupEditor MarkupEditorUIView.swift
[42/52] Compiling MarkupEditor MarkupEditorView.swift
[43/52] Compiling MarkupEditor TableToolbar.swift
[44/52] Compiling MarkupEditor Blur.swift
[45/52] Compiling MarkupEditor BehaviorConfig.swift
[46/52] Compiling MarkupEditor JSONConfigurable.swift
[47/52] Compiling MarkupEditor KeymapConfig.swift
[48/52] Compiling MarkupEditor MarkupWKWebView.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
[49/52] Compiling MarkupEditor MarkupWKWebViewConfiguration.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
[50/52] Compiling MarkupEditor MarkupWKWebViewRepresentable.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
[51/52] Compiling MarkupEditor Plugin.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
[52/52] Compiling MarkupEditor FormatContext.swift
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:157:5: error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 155 |     }
 156 |
 157 |     @MainActor
     |     `- error: 'isolated' deinit requires frontend flag -enable-experimental-feature IsolatedDeinit to enable the usage of this language feature
 158 |     deinit {
 159 |         stopLoading()
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:159:9: error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 157 |     @MainActor
 158 |     deinit {
 159 |         stopLoading()
     |         `- error: call to main actor-isolated instance method 'stopLoading()' in a synchronous nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
WebKit.WKWebView.stopLoading:2:22: note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
1 | class WKWebView {
2 | @MainActor open func stopLoading()}
  |                      `- note: calls to instance method 'stopLoading()' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:45: error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                                             `- error: call to main actor-isolated instance method 'removeScriptMessageHandler(forName:)' in a synchronous nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
WebKit.WKUserContentController.removeScriptMessageHandler:2:22: note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
1 | class WKUserContentController {
2 | @MainActor open func removeScriptMessageHandler(forName name: String)}
  |                      `- note: calls to instance method 'removeScriptMessageHandler(forName:)' from outside of its actor context are implicitly asynchronous
3 |
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:23: error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |                       `- error: main actor-isolated property 'userContentController' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebViewConfiguration.h:118:56: note: property declared here
116 | /*! @abstract The user content controller to associate with the web view.
117 | */
118 | @property (nonatomic, strong) WKUserContentController *userContentController;
    |                                                        `- note: property declared here
119 |
120 | /*! @abstract The web extension controller to associate with the web view.
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:160:9: error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 158 |     deinit {
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
     |         `- error: main actor-isolated property 'configuration' can not be referenced from a nonisolated context
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:91:63: note: property declared here
 89 | /*! @abstract A copy of the configuration with which the web view was
 90 |  initialized. */
 91 | @property (nonatomic, readonly, copy) WKWebViewConfiguration *configuration;
    |                                                               `- note: property declared here
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:161:9: error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 159 |         stopLoading()
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
     |         `- error: main actor-isolated property 'uiDelegate' can not be mutated from a nonisolated context
 162 |         navigationDelegate = nil
 163 |     }
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:97:57: note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
 97 | @property (nullable, nonatomic, weak) id <WKUIDelegate> UIDelegate;
    |                                                         `- note: mutation of this property is only permitted within the actor
 98 |
 99 | /*! @abstract The web view's back-forward list. */
/Users/admin/builder/spi-builder-workspace/MarkupEditor/MarkupWKWebView.swift:162:9: error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 160 |         configuration.userContentController.removeScriptMessageHandler(forName: "markup")
 161 |         uiDelegate = nil
 162 |         navigationDelegate = nil
     |         `- error: main actor-isolated property 'navigationDelegate' can not be mutated from a nonisolated context
 163 |     }
 164 |
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/System/Library/Frameworks/WebKit.framework/Headers/WKWebView.h:94:65: note: mutation of this property is only permitted within the actor
 92 |
 93 | /*! @abstract The web view's navigation delegate. */
 94 | @property (nullable, nonatomic, weak) id <WKNavigationDelegate> navigationDelegate;
    |                                                                 `- note: mutation of this property is only permitted within the actor
 95 |
 96 | /*! @abstract The web view's user interface delegate. */
BUILD FAILURE 6.1 macosSpm