Swift Package IndexBuild Information
Successful build of ReadiumFuzi, reference master (173ec9), with Swift 6.1 for macOS (SPM) on 15 Aug 2026 16:02:09 UTC.
Swift 6 data race errors: 2
Build Command
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCapturesBuild Log
========================================
RunAll
========================================
Builder version: undefined version: run 'make version' to update
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/readium/Fuzi.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/readium/Fuzi
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at 173ec94 Declare the Swift version in the podspec (#3)
Cloned https://github.com/readium/Fuzi.git
Revision (git rev-parse @):
173ec944ca6f2e8024ceb7324bcb8a3cc95a0661
SUCCESS checkout https://github.com/readium/Fuzi.git at master
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.1
Building package at path: $PWD
https://github.com/readium/Fuzi.git
https://github.com/readium/Fuzi.git
{
"dependencies" : [
],
"manifest_display_name" : "ReadiumFuzi",
"name" : "ReadiumFuzi",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "ReadiumFuzi",
"targets" : [
"ReadiumFuzi"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "ReadiumFuziTests",
"module_type" : "SwiftTarget",
"name" : "ReadiumFuziTests",
"path" : "Tests",
"sources" : [
"AtomTests.swift",
"CSSTests.swift",
"DefaultNamespaceXPathTests.swift",
"HTMLTests.swift",
"VMAPTests.swift",
"XMLTests.swift",
"XPathFunctionResultTests.swift"
],
"target_dependencies" : [
"ReadiumFuzi"
],
"type" : "test"
},
{
"c99name" : "ReadiumFuzi",
"module_type" : "SwiftTarget",
"name" : "ReadiumFuzi",
"path" : "Sources",
"product_memberships" : [
"ReadiumFuzi"
],
"sources" : [
"Document.swift",
"Element.swift",
"Error.swift",
"Helpers.swift",
"Node.swift",
"NodeSet.swift",
"Queryable.swift"
],
"type" : "library"
}
],
"tools_version" : "5.0"
}
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 -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/10] Compiling ReadiumFuzi Document.swift
[4/10] Emitting module ReadiumFuzi
/Users/admin/builder/spi-builder-workspace/Sources/Node.swift:129:5: warning: reference to var 'xmlFree' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
127 | let key = xmlNodeGetContent(self.cNode)
128 | let stringValue = ^-^key ?? ""
129 | xmlFree(key)
| `- warning: reference to var 'xmlFree' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
130 | return stringValue
131 | }()
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/usr/include/libxml/globals.h:257:23: note: var declared here
255 | XMLPUBVAR xmlMallocFunc xmlMallocAtomic LIBXML_API_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS;
256 | XMLPUBVAR xmlReallocFunc xmlRealloc LIBXML_API_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS;
257 | XMLPUBVAR xmlFreeFunc xmlFree;
| `- note: var declared here
258 | XMLPUBVAR xmlStrdupFunc xmlMemStrdup LIBXML_API_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS;
259 | #endif /* LIBXML_THREAD_ALLOC_ENABLED */
/Users/admin/builder/spi-builder-workspace/Sources/NodeSet.swift:104:21: warning: static property 'emptySet' is not concurrency-safe because non-'Sendable' type 'XPathNodeSet' may have shared mutable state; this is an error in the Swift 6 language mode
100 |
101 | /// XPath selector result node set
102 | open class XPathNodeSet: NodeSet {
| `- note: class 'XPathNodeSet' does not conform to the 'Sendable' protocol
103 | /// Empty node set
104 | public static let emptySet = XPathNodeSet(cXPath: nil, document: nil)
| |- warning: static property 'emptySet' is not concurrency-safe because non-'Sendable' type 'XPathNodeSet' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'emptySet' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
105 |
106 | fileprivate var cXPath: xmlXPathObjectPtr?
[5/10] Compiling ReadiumFuzi NodeSet.swift
/Users/admin/builder/spi-builder-workspace/Sources/NodeSet.swift:104:21: warning: static property 'emptySet' is not concurrency-safe because non-'Sendable' type 'XPathNodeSet' may have shared mutable state; this is an error in the Swift 6 language mode
100 |
101 | /// XPath selector result node set
102 | open class XPathNodeSet: NodeSet {
| `- note: class 'XPathNodeSet' does not conform to the 'Sendable' protocol
103 | /// Empty node set
104 | public static let emptySet = XPathNodeSet(cXPath: nil, document: nil)
| |- warning: static property 'emptySet' is not concurrency-safe because non-'Sendable' type 'XPathNodeSet' may have shared mutable state; this is an error in the Swift 6 language mode
| |- note: add '@MainActor' to make static property 'emptySet' part of global actor 'MainActor'
| `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
105 |
106 | fileprivate var cXPath: xmlXPathObjectPtr?
[6/10] Compiling ReadiumFuzi Error.swift
[7/10] Compiling ReadiumFuzi Helpers.swift
[8/10] Compiling ReadiumFuzi Node.swift
/Users/admin/builder/spi-builder-workspace/Sources/Node.swift:129:5: warning: reference to var 'xmlFree' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
127 | let key = xmlNodeGetContent(self.cNode)
128 | let stringValue = ^-^key ?? ""
129 | xmlFree(key)
| `- warning: reference to var 'xmlFree' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
130 | return stringValue
131 | }()
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/usr/include/libxml/globals.h:257:23: note: var declared here
255 | XMLPUBVAR xmlMallocFunc xmlMallocAtomic LIBXML_API_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS;
256 | XMLPUBVAR xmlReallocFunc xmlRealloc LIBXML_API_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS;
257 | XMLPUBVAR xmlFreeFunc xmlFree;
| `- note: var declared here
258 | XMLPUBVAR xmlStrdupFunc xmlMemStrdup LIBXML_API_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS;
259 | #endif /* LIBXML_THREAD_ALLOC_ENABLED */
[9/10] Compiling ReadiumFuzi Element.swift
/Users/admin/builder/spi-builder-workspace/Sources/Element.swift:72:7: warning: reference to var 'xmlFree' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
70 | if let xmlValue = xmlValue {
71 | value = ^-^xmlValue
72 | xmlFree(xmlValue)
| `- warning: reference to var 'xmlFree' is not concurrency-safe because it involves shared mutable state; this is an error in the Swift 6 language mode
73 | }
74 | return value
/Applications/Xcode-16.3.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.4.sdk/usr/include/libxml/globals.h:257:23: note: var declared here
255 | XMLPUBVAR xmlMallocFunc xmlMallocAtomic LIBXML_API_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS;
256 | XMLPUBVAR xmlReallocFunc xmlRealloc LIBXML_API_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS;
257 | XMLPUBVAR xmlFreeFunc xmlFree;
| `- note: var declared here
258 | XMLPUBVAR xmlStrdupFunc xmlMemStrdup LIBXML_API_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS;
259 | #endif /* LIBXML_THREAD_ALLOC_ENABLED */
[10/10] Compiling ReadiumFuzi Queryable.swift
Build complete! (5.49s)
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "ReadiumFuzi",
"name" : "ReadiumFuzi",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "ReadiumFuzi",
"targets" : [
"ReadiumFuzi"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "ReadiumFuziTests",
"module_type" : "SwiftTarget",
"name" : "ReadiumFuziTests",
"path" : "Tests",
"sources" : [
"AtomTests.swift",
"CSSTests.swift",
"DefaultNamespaceXPathTests.swift",
"HTMLTests.swift",
"VMAPTests.swift",
"XMLTests.swift",
"XPathFunctionResultTests.swift"
],
"target_dependencies" : [
"ReadiumFuzi"
],
"type" : "test"
},
{
"c99name" : "ReadiumFuzi",
"module_type" : "SwiftTarget",
"name" : "ReadiumFuzi",
"path" : "Sources",
"product_memberships" : [
"ReadiumFuzi"
],
"sources" : [
"Document.swift",
"Element.swift",
"Error.swift",
"Helpers.swift",
"Node.swift",
"NodeSet.swift",
"Queryable.swift"
],
"type" : "library"
}
],
"tools_version" : "5.0"
}
Done.