BroadcastWriter – Build Information

Build Information

Failed to build BroadcastWriter, reference main (ef52e6), with Swift 6.4 for macOS (SPM) on 17 Sep 2026 14:35:18 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 5.1.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/romiroma/BroadcastWriter.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/romiroma/BroadcastWriter
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at ef52e6f Update README.md
Cloned https://github.com/romiroma/BroadcastWriter.git
Revision (git rev-parse @):
ef52e6f09f12c60bcca8544934799a5863947a7f
SUCCESS checkout https://github.com/romiroma/BroadcastWriter.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/romiroma/BroadcastWriter.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Planning deferred tasks]
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error: SwiftCompile normal arm64 failed with a nonzero exit code. Command line:     cd /Users/admin/builder

/Users/admin/builder/spi-builder-workspace/Sources/BroadcastWriter/AVAssetWriter.Status+stringDescription.swift:4:1: [1;33mwarning: [1;39mextension declares a conformance of imported type 'Status' to imported protocol 'CustomStringConvertible'; this will not behave correctly if the owners of 'AVFoundation' introduce this conformance in the future[0;0m
 [0;36m2 |[0;0m import AVFoundation
 [0;36m3 |[0;0m
 [0;36m4 |[0;0m extension AVAssetWriter.Status: CustomStringConvertible {
   [0;36m|[0;0m |- [1;33mwarning: [1;39mextension declares a conformance of imported type 'Status' to imported protocol 'CustomStringConvertible'; this will not behave correctly if the owners of 'AVFoundation' introduce this conformance in the future[0;0m
   [0;36m|[0;0m `- [1;39mnote: [1;39madd '@retroactive' to silence this warning[0;0m
 [0;36m5 |[0;0m
 [0;36m6 |[0;0m     public var description: String {
/Users/admin/builder/spi-builder-workspace/Sources/BroadcastWriter/BroadcastWriter.swift:58:26: [1;31merror: [1;39m'AVAudioSession' is unavailable in macOS[0;0m
 [0;36m56 |[0;0m
 [0;36m57 |[0;0m     private lazy var microphoneInput: AVAssetWriterInput = {
 [0;36m58 |[0;0m         let sampleRate = [4;39mAVAudioSession[0;0m.sharedInstance().sampleRate
    [0;36m|[0;0m                          `- [1;31merror: [1;39m'AVAudioSession' is unavailable in macOS[0;0m
 [0;36m59 |[0;0m
 [0;36m60 |[0;0m         var audioSettings: [String: Any] = [
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/AVFAudio.framework/Headers/AVAudioSession.h:32:12: [1;39mnote: [1;39m'AVAudioSession' has been explicitly marked unavailable here[0;0m
 [0;36m30 |[0;0m NS_SWIFT_SENDABLE
 [0;36m31 |[0;0m API_AVAILABLE(ios(3.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos)
 [0;36m32 |[0;0m @interface AVAudioSession : NSObject {
    [0;36m|[0;0m            `- [1;39mnote: [1;39m'AVAudioSession' has been explicitly marked unavailable here[0;0m
 [0;36m33 |[0;0m @private
 [0;36m34 |[0;0m 	void *_impl;
/Users/admin/builder/spi-builder-workspace/Sources/BroadcastWriter/BroadcastWriter.swift:58:41: [1;31merror: [1;39m'sharedInstance()' is unavailable in macOS[0;0m
 [0;36m56 |[0;0m
 [0;36m57 |[0;0m     private lazy var microphoneInput: AVAssetWriterInput = {
 [0;36m58 |[0;0m         let sampleRate = AVAudioSession.[4;39msharedInstance[0;0m().sampleRate
    [0;36m|[0;0m                                         `- [1;31merror: [1;39m'sharedInstance()' is unavailable in macOS[0;0m
 [0;36m59 |[0;0m
 [0;36m60 |[0;0m         var audioSettings: [String: Any] = [
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/AVFAudio.framework/Headers/AVAudioSession.h:38:1: [1;39mnote: [1;39m'sharedInstance()' has been explicitly marked unavailable here[0;0m
 [0;36m36 |[0;0m
 [0;36m37 |[0;0m /// Return singleton instance.
 [0;36m38 |[0;0m + (AVAudioSession *)sharedInstance API_AVAILABLE(ios(3.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
    [0;36m|[0;0m `- [1;39mnote: [1;39m'sharedInstance()' has been explicitly marked unavailable here[0;0m
 [0;36m39 |[0;0m
 [0;36m40 |[0;0m /// Get the list of categories available on the device.  Certain categories may be unavailable on
/Users/admin/builder/spi-builder-workspace/Sources/BroadcastWriter/BroadcastWriter.swift:58:58: [1;31merror: [1;39m'sampleRate' is unavailable in macOS[0;0m
 [0;36m56 |[0;0m
 [0;36m57 |[0;0m     private lazy var microphoneInput: AVAssetWriterInput = {
 [0;36m58 |[0;0m         let sampleRate = AVAudioSession.sharedInstance().[4;39msampleRate[0;0m
    [0;36m|[0;0m                                                          `- [1;31merror: [1;39m'sampleRate' is unavailable in macOS[0;0m
 [0;36m59 |[0;0m
 [0;36m60 |[0;0m         var audioSettings: [String: Any] = [
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk/System/Library/Frameworks/AVFAudio.framework/Headers/AVAudioSession.h:401:29: [1;39mnote: [1;39m'sampleRate' has been explicitly marked unavailable here[0;0m
[0;36m399 |[0;0m
[0;36m400 |[0;0m /// The current hardware sample rate. Is key-value observable (starting iOS 18.0).
[0;36m401 |[0;0m @property (readonly) double sampleRate API_AVAILABLE(ios(6.0), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
    [0;36m|[0;0m                             `- [1;39mnote: [1;39m'sampleRate' has been explicitly marked unavailable here[0;0m
[0;36m402 |[0;0m
[0;36m403 |[0;0m /// The current number of hardware input channels. Is key-value observable.
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/BroadcastWriter/AVAssetWriter.Status+stringDescription.swift /Users/admin/builder/spi-builder-workspace/Sources/BroadcastWriter/BroadcastWriter.swift /Users/admin/builder/spi-builder-workspace/Sources/BroadcastWriter/CGFloat+NSNumber.swift /Users/admin/builder/spi-builder-workspace/Sources/BroadcastWriter/Int+NSNumber.swift -target arm64-apple-macos12.0 -disable-cross-import-overlay-search -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libPreviewsMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftUIMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/Objects-normal/arm64/BroadcastWriter-dependencies-1.json -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftExplicitPrecompiledModules -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.build/out/SDKStatCaches.noindex/macosx27.0-26A425-80c5bbf1d171475443272936d42f90a36a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name BroadcastWriter -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/Objects-normal/arm64/BroadcastWriter_const_extract_protocols.json -disable-clang-spi -clang-target arm64-apple-macos27.0 -target-sdk-version 27.0 -target-sdk-name macosx27.0 -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/Objects-normal/arm64/BroadcastWriter.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/Objects-normal/arm64/BroadcastWriter.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/Objects-normal/arm64/BroadcastWriter-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/Objects-normal/arm64/BroadcastWriter-primary-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/Objects-normal/arm64/BroadcastWriter-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/Objects-normal/arm64/BroadcastWriter.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/BroadcastWriter.build/Debug/BroadcastWriter-t.build/Objects-normal/arm64/BroadcastWriter.abi.json
error: Build failed
BUILD FAILURE 6.4 macosSpm