Build Information
Failed to build opentelemetry-swift, reference main (30c146), with Swift 6.0 for macOS (SPM) on 20 Apr 2026 13:14:48 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64Build 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
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Build
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Selected platform: macosSpm
Swift version: 6.0
Building package at path: $PWD
https://github.com/open-telemetry/opentelemetry-swift.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64
Fetching https://github.com/apple/swift-nio.git
Fetching https://github.com/undefinedlabs/Thrift-Swift
Fetching https://github.com/apple/swift-protobuf.git
Fetching https://github.com/undefinedlabs/opentracing-objc
Fetching https://github.com/apple/swift-metrics.git
Fetching https://github.com/grpc/grpc-swift.git
Fetching https://github.com/apple/swift-log.git
[7/652] Fetching thrift-swift
[119/3839] Fetching thrift-swift, swift-metrics
[215/4347] Fetching thrift-swift, swift-metrics, opentracing-objc
[1540/10982] Fetching thrift-swift, swift-metrics, opentracing-objc, swift-log
[3222/62490] Fetching thrift-swift, swift-metrics, opentracing-objc, swift-log, grpc-swift
[4689/109502] Fetching thrift-swift, swift-metrics, opentracing-objc, swift-log, grpc-swift, swift-protobuf
[21956/192680] Fetching thrift-swift, swift-metrics, opentracing-objc, swift-log, grpc-swift, swift-protobuf, swift-nio
Fetched https://github.com/undefinedlabs/Thrift-Swift from cache (2.49s)
Fetching https://github.com/open-telemetry/opentelemetry-swift-core.git
[139592/192028] Fetching swift-metrics, opentracing-objc, swift-log, grpc-swift, swift-protobuf, swift-nio
[155179/206030] Fetching swift-metrics, opentracing-objc, swift-log, grpc-swift, swift-protobuf, swift-nio, opentelemetry-swift-core
Fetched https://github.com/open-telemetry/opentelemetry-swift-core.git from cache (1.36s)
[168667/192028] Fetching swift-metrics, opentracing-objc, swift-log, grpc-swift, swift-protobuf, swift-nio
Fetched https://github.com/apple/swift-protobuf.git from cache (5.57s)
Fetched https://github.com/undefinedlabs/opentracing-objc from cache (5.98s)
Fetched https://github.com/apple/swift-log.git from cache (5.98s)
Fetched https://github.com/apple/swift-nio.git from cache (5.99s)
Fetched https://github.com/apple/swift-metrics.git from cache (5.98s)
Fetched https://github.com/grpc/grpc-swift.git from cache (5.98s)
Computing version for https://github.com/undefinedlabs/opentracing-objc
Computed https://github.com/undefinedlabs/opentracing-objc at 0.5.2 (2.38s)
Computing version for https://github.com/apple/swift-protobuf.git
Computed https://github.com/apple/swift-protobuf.git at 1.36.1 (0.47s)
Computing version for https://github.com/grpc/grpc-swift.git
error: 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 macosSpm