Swift Package IndexBuild Information
Failed to build SGSwiftyBind, reference master (f7e8d3), with Swift 6.4 for iOS using Xcode 27.0 on 19 Sep 2026 11:16:15 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SGSwiftyBind -destination generic/platform=iOSBuild Log
========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/the-freshlord/SGSwiftyBind.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/the-freshlord/SGSwiftyBind
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at f7e8d30 Made value public
Cloned https://github.com/the-freshlord/SGSwiftyBind.git
Revision (git rev-parse @):
f7e8d309717565127eda509bdd3dd6a312c56064
SUCCESS checkout https://github.com/the-freshlord/SGSwiftyBind.git at master
========================================
Build
========================================
Selected platform: iOS
Swift version: 6.4
Building package at path: $PWD
https://github.com/the-freshlord/SGSwiftyBind.git
Command line invocation:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
SGSwiftyBind: /Users/admin/builder/spi-builder-workspace
resolved source packages: SGSwiftyBind
2026-09-19 07:15:24.851 xcodebuild[529:3031] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
],
"manifest_display_name" : "SGSwiftyBind",
"name" : "SGSwiftyBind",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "SGSwiftyBind",
"targets" : [
"SGSwiftyBind"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "SGSwiftyBindTests",
"module_type" : "SwiftTarget",
"name" : "SGSwiftyBindTests",
"path" : "Tests/SGSwiftyBindTests",
"sources" : [
"SGSwiftyBindTests.swift"
],
"target_dependencies" : [
"SGSwiftyBind"
],
"type" : "test"
},
{
"c99name" : "SGSwiftyBind",
"module_type" : "SwiftTarget",
"name" : "SGSwiftyBind",
"path" : "Sources/SGSwiftyBind",
"product_memberships" : [
"SGSwiftyBind"
],
"sources" : [
"SGSwiftyBind.swift"
],
"type" : "library"
}
],
"tools_version" : "4.0"
}
{
"workspace" : {
"name" : "SGSwiftyBind",
"schemes" : [
"SGSwiftyBind"
]
}
}
2026-09-19 07:16:06.152 xcodebuild[648:4154] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SGSwiftyBind -destination generic/platform=iOS
Command line invocation:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme SGSwiftyBind -destination generic/platform=iOS
Resolve Package Graph
Resolved source packages:
SGSwiftyBind: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
Target 'SGSwiftyBind-product' in project 'SGSwiftyBind'
➜ Explicit dependency on target 'SGSwiftyBind' in project 'SGSwiftyBind'
Target 'SGSwiftyBind' in project 'SGSwiftyBind' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: bd43fd10ac2eba540ea48db853ef6894
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/bd43fd10ac2eba540ea48db853ef6894.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/CompilationCache.noindex
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/CompilationCache.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
ClangStatCache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos27.0-24A430-e829b21a6f8c9b70876ba0858053c04440ceaa042ed91876912b2eeea4e3aa14.sdkstatcache
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos27.0-24A430-e829b21a6f8c9b70876ba0858053c04440ceaa042ed91876912b2eeea4e3aa14.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/PrecompiledHeaders
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/PrecompiledHeaders
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-iphoneos
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-iphoneos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/PackageFrameworks
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/SGSwiftyBind.modulemap (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/SGSwiftyBind.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/SGSwiftyBind.DependencyMetadataFileList (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/SGSwiftyBind.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/SGSwiftyBind.DependencyStaticMetadataFileList (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/SGSwiftyBind.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.SwiftFileList (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-OutputFileMap.json (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.LinkFileList (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind_const_extract_protocols.json (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.SwiftConstValuesFileList (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.SwiftConstValuesFileList
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-iphoneos/SGSwiftyBind.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/SGSwiftyBind.modulemap (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/SGSwiftyBind.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-iphoneos
SwiftDriver SGSwiftyBind normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-SwiftDriver -- /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -parse-as-library -module-name SGSwiftyBind -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk -target arm64-apple-ios15.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 4 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos27.0-24A430-e829b21a6f8c9b70876ba0858053c04440ceaa042ed91876912b2eeea4e3aa14.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-OutputFileMap.json -save-temps -no-color-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftmodule -serialize-diagnostics -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -emit-const-values -const-gather-protocols-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ SGSwiftyBind (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
SwiftCompile normal arm64 (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
SwiftCompile normal arm64 Compiling\ SGSwiftyBind.swift /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-SwiftPerFileCompile SGSwiftyBind.swift
/Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift:161:30: error: cannot convert value of type '()?' to closure result type 'Void'
159 | },
160 | bindCallback: { [weak self] (listener, observer) in
161 | return self?.bind(listener, for: observer)
| `- error: cannot convert value of type '()?' to closure result type 'Void'
162 | },
163 | bindAndFireCallback: { [weak self] (listener, observer) in
/Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift:164:30: error: cannot convert value of type '()?' to closure result type 'Void'
162 | },
163 | bindAndFireCallback: { [weak self] (listener, observer) in
164 | return self?.bindAndFire(listener, for: observer)
| `- error: cannot convert value of type '()?' to closure result type 'Void'
165 | },
166 | unbindCallback: { [weak self] (observer) in
/Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift:167:30: error: cannot convert value of type '()?' to closure result type 'Void'
165 | },
166 | unbindCallback: { [weak self] (observer) in
167 | return self?.unbind(for: observer)
| `- error: cannot convert value of type '()?' to closure result type 'Void'
168 | }
169 | )
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.dia -target arm64-apple-ios15.0 -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -profile-generate -profile-coverage-mapping -swift-version 4 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos27.0-24A430-e829b21a6f8c9b70876ba0858053c04440ceaa042ed91876912b2eeea4e3aa14.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name SGSwiftyBind -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind_const_extract_protocols.json -disable-clang-spi -target-sdk-version 27.0 -target-sdk-name iphoneos27.0 -external-plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.o -index-unit-output-path /SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.o -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -index-system-modules
SwiftDriverJobDiscovery normal arm64 Emitting module for SGSwiftyBind (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
SwiftDriver\ Compilation\ Requirements SGSwiftyBind normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-Swift-Compilation-Requirements -- /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -parse-as-library -module-name SGSwiftyBind -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk -target arm64-apple-ios15.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 4 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos27.0-24A430-e829b21a6f8c9b70876ba0858053c04440ceaa042ed91876912b2eeea4e3aa14.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-OutputFileMap.json -save-temps -no-color-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftmodule -serialize-diagnostics -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -emit-const-values -const-gather-protocols-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftMergeGeneratedHeaders /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-iphoneos/SGSwiftyBind-Swift.h /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-Swift.h (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
builtin-swiftHeaderTool -arch arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-Swift.h -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-iphoneos/SGSwiftyBind-Swift.h
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/SGSwiftyBind.swiftmodule/arm64-apple-ios.abi.json /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.abi.json (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks -rename /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.abi.json /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/SGSwiftyBind.swiftmodule/arm64-apple-ios.abi.json
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/SGSwiftyBind.swiftmodule/arm64-apple-ios.swiftdoc /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftdoc (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks -rename /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftdoc /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/SGSwiftyBind.swiftmodule/arm64-apple-ios.swiftdoc
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/SGSwiftyBind.swiftmodule/arm64-apple-ios.swiftmodule /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftmodule (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks -rename /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftmodule /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/SGSwiftyBind.swiftmodule/arm64-apple-ios.swiftmodule
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/SGSwiftyBind.swiftmodule/Project/arm64-apple-ios.swiftsourceinfo /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftsourceinfo (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace
builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks -rename /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftsourceinfo /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/SGSwiftyBind.swiftmodule/Project/arm64-apple-ios.swiftsourceinfo
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
2026-09-19 07:16:07.701 xcodebuild[649:4194] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
SwiftCompile normal arm64 Compiling\ SGSwiftyBind.swift /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
Building workspace SGSwiftyBind with scheme SGSwiftyBind
(3 failures)
Command line invocation:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
SGSwiftyBind: /Users/admin/builder/spi-builder-workspace
resolved source packages: SGSwiftyBind
2026-09-19 07:16:12.342 xcodebuild[666:4360] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
],
"manifest_display_name" : "SGSwiftyBind",
"name" : "SGSwiftyBind",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "SGSwiftyBind",
"targets" : [
"SGSwiftyBind"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "SGSwiftyBindTests",
"module_type" : "SwiftTarget",
"name" : "SGSwiftyBindTests",
"path" : "Tests/SGSwiftyBindTests",
"sources" : [
"SGSwiftyBindTests.swift"
],
"target_dependencies" : [
"SGSwiftyBind"
],
"type" : "test"
},
{
"c99name" : "SGSwiftyBind",
"module_type" : "SwiftTarget",
"name" : "SGSwiftyBind",
"path" : "Sources/SGSwiftyBind",
"product_memberships" : [
"SGSwiftyBind"
],
"sources" : [
"SGSwiftyBind.swift"
],
"type" : "library"
}
],
"tools_version" : "4.0"
}
{
"workspace" : {
"name" : "SGSwiftyBind",
"schemes" : [
"SGSwiftyBind"
]
}
}
2026-09-19 07:16:13.523 xcodebuild[674:4427] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SGSwiftyBind -destination generic/platform=iOS
Command line invocation:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme SGSwiftyBind -destination generic/platform=iOS
Resolve Package Graph
Resolved source packages:
SGSwiftyBind: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
Target 'SGSwiftyBind-product' in project 'SGSwiftyBind'
➜ Explicit dependency on target 'SGSwiftyBind' in project 'SGSwiftyBind'
Target 'SGSwiftyBind' in project 'SGSwiftyBind' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ClangStatCache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos27.0-24A430-e829b21a6f8c9b70876ba0858053c04440ceaa042ed91876912b2eeea4e3aa14.sdkstatcache
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos27.0-24A430-e829b21a6f8c9b70876ba0858053c04440ceaa042ed91876912b2eeea4e3aa14.sdkstatcache
SwiftDriver SGSwiftyBind normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-SwiftDriver -- /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -parse-as-library -module-name SGSwiftyBind -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk -target arm64-apple-ios15.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 4 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos27.0-24A430-e829b21a6f8c9b70876ba0858053c04440ceaa042ed91876912b2eeea4e3aa14.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-OutputFileMap.json -save-temps -no-color-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftmodule -serialize-diagnostics -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -emit-const-values -const-gather-protocols-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ SGSwiftyBind (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
SwiftCompile normal arm64 (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
SwiftCompile normal arm64 Compiling\ SGSwiftyBind.swift /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
builtin-SwiftPerFileCompile SGSwiftyBind.swift
/Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift:161:30: error: cannot convert value of type '()?' to closure result type 'Void'
159 | },
160 | bindCallback: { [weak self] (listener, observer) in
161 | return self?.bind(listener, for: observer)
| `- error: cannot convert value of type '()?' to closure result type 'Void'
162 | },
163 | bindAndFireCallback: { [weak self] (listener, observer) in
/Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift:164:30: error: cannot convert value of type '()?' to closure result type 'Void'
162 | },
163 | bindAndFireCallback: { [weak self] (listener, observer) in
164 | return self?.bindAndFire(listener, for: observer)
| `- error: cannot convert value of type '()?' to closure result type 'Void'
165 | },
166 | unbindCallback: { [weak self] (observer) in
/Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift:167:30: error: cannot convert value of type '()?' to closure result type 'Void'
165 | },
166 | unbindCallback: { [weak self] (observer) in
167 | return self?.unbind(for: observer)
| `- error: cannot convert value of type '()?' to closure result type 'Void'
168 | }
169 | )
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.d -emit-const-values-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftconstvalues -emit-reference-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.swiftdeps -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.dia -target arm64-apple-ios15.0 -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS27.0.sdk/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -profile-generate -profile-coverage-mapping -swift-version 4 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/iphoneos27.0-24A430-e829b21a6f8c9b70876ba0858053c04440ceaa042ed91876912b2eeea4e3aa14.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-iphoneos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name SGSwiftyBind -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind_const_extract_protocols.json -disable-clang-spi -target-sdk-version 27.0 -target-sdk-name iphoneos27.0 -external-plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/swift/host/plugins\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/local/lib/swift/host/plugins\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/swift-plugin-server -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.o -index-unit-output-path /SGSwiftyBind.build/Debug-iphoneos/SGSwiftyBind-t.build/Objects-normal/arm64/SGSwiftyBind.o -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -index-system-modules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
2026-09-19 07:16:14.495 xcodebuild[675:4450] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
SwiftCompile normal arm64 Compiling\ SGSwiftyBind.swift /Users/admin/builder/spi-builder-workspace/Sources/SGSwiftyBind/SGSwiftyBind.swift (in target 'SGSwiftyBind' from project 'SGSwiftyBind')
Building workspace SGSwiftyBind with scheme SGSwiftyBind
(3 failures)
BUILD FAILURE 6.4 iOS