Swift Package Index

Build Information

Failed to build opentelemetry-swift, reference main (30c146), with Swift 6.0 for macOS (Xcode) using Xcode 16.2 on 20 Apr 2026 13:15:19 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/open-telemetry/opentelemetry-swift.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/open-telemetry/opentelemetry-swift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 30c1468 Updated opentelemetry-swift-core to 2.4.1
Cloned https://github.com/open-telemetry/opentelemetry-swift.git
Revision (git rev-parse @):
30c1468d385bf4485d93ca12c4b71aaeb9c974a6
SUCCESS checkout https://github.com/open-telemetry/opentelemetry-swift.git at main
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.0
Building package at path:  $PWD
https://github.com/open-telemetry/opentelemetry-swift.git
Command line invocation:
    /Applications/Xcode-16.2.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Fetching from https://github.com/apple/swift-metrics.git
Fetching from https://github.com/apple/swift-log.git
Fetching from https://github.com/grpc/grpc-swift.git
Fetching from https://github.com/apple/swift-nio.git
Fetching from https://github.com/undefinedlabs/opentracing-objc
Fetching from https://github.com/apple/swift-protobuf.git
Fetching from https://github.com/undefinedlabs/Thrift-Swift
Fetching from https://github.com/open-telemetry/opentelemetry-swift-core.git
Resolve Package Graph
Updating from https://github.com/apple/swift-nio.git
Updating from https://github.com/undefinedlabs/opentracing-objc
Updating from https://github.com/apple/swift-log.git
Updating from https://github.com/apple/swift-metrics.git
Updating from https://github.com/apple/swift-protobuf.git
Updating from https://github.com/grpc/grpc-swift.git
Updating from https://github.com/undefinedlabs/Thrift-Swift
Updating from https://github.com/open-telemetry/opentelemetry-swift-core.git
Resolve Package Graph
Updating from https://github.com/apple/swift-metrics.git
Updating from https://github.com/apple/swift-protobuf.git
Updating from https://github.com/apple/swift-nio.git
Updating from https://github.com/apple/swift-log.git
Updating from https://github.com/undefinedlabs/opentracing-objc
Updating from https://github.com/grpc/grpc-swift.git
Updating from https://github.com/undefinedlabs/Thrift-Swift
Updating from https://github.com/open-telemetry/opentelemetry-swift-core.git
Resolve Package Graph
Updating from https://github.com/undefinedlabs/Thrift-Swift
Updating from https://github.com/grpc/grpc-swift.git
Updating from https://github.com/apple/swift-protobuf.git
Updating from https://github.com/apple/swift-metrics.git
Updating from https://github.com/apple/swift-nio.git
Updating from https://github.com/undefinedlabs/opentracing-objc
Updating from https://github.com/apple/swift-log.git
Updating from https://github.com/open-telemetry/opentelemetry-swift-core.git
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-20 06:15:15.358 xcodebuild[478:2764] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-20-04_06-15-0015.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Failed to resolve dependencies Dependencies could not be resolved because 'grpc-swift' 1.27.0..<1.27.7 contains incompatible tools version (6.1.0) and root depends on 'grpc-swift' 1.27.5.
Command line invocation:
    /Applications/Xcode-16.2.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Updating from https://github.com/apple/swift-protobuf.git
Updating from https://github.com/undefinedlabs/Thrift-Swift
Updating from https://github.com/grpc/grpc-swift.git
Updating from https://github.com/apple/swift-log.git
Updating from https://github.com/undefinedlabs/opentracing-objc
Updating from https://github.com/apple/swift-metrics.git
Updating from https://github.com/apple/swift-nio.git
Updating from https://github.com/open-telemetry/opentelemetry-swift-core.git
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-20 06:15:18.357 xcodebuild[872:4566] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2026-20-04_06-15-0018.xcresult
xcodebuild: error: Could not resolve package dependencies:
  Failed to resolve dependencies Dependencies could not be resolved because 'grpc-swift' 1.27.0..<1.27.7 contains incompatible tools version (6.1.0) and root depends on 'grpc-swift' 1.27.5.
BUILD FAILURE 6.0 macosXcodebuild