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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build ReactiveStreams with Swift 5.10 for macOS (Xcode) using Xcode 15.4.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$workDir/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $workDir/.derivedData build -scheme ReactiveStreams -destination platform=macos,arch=arm64

Build Log

<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>RNGPRKM1WNK9X0D6</RequestId><HostId>rvcdeguuImHfEM8SnPZZOCT9DXGQgiAsE0dz9dS+6l5o1XeZ7M2ladPjMWHhW1V/dVohjX1VLi13n8XWIsBuWg==</HostId></Error>