opentelemetry-swift-core – Build Information

Build Information

Successful build of opentelemetry-swift-core, reference 2.6.0 (c6fcee), with Swift 6.4 for macOS (SPM) on 29 Sep 2026 17:09:31 UTC.

Swift 6 data race errors: 0

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/open-telemetry/opentelemetry-swift-core.git
Reference: 2.6.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/open-telemetry/opentelemetry-swift-core
 * tag               2.6.0      -> FETCH_HEAD
HEAD is now at c6fcee7 Release 2.6.0
Cloned https://github.com/open-telemetry/opentelemetry-swift-core.git
Revision (git rev-parse @):
c6fcee77cfc21ba400366f12475217c7b6e1d605
SUCCESS checkout https://github.com/open-telemetry/opentelemetry-swift-core.git at 2.6.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/open-telemetry/opentelemetry-swift-core.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Provisioning 1 / 11]
[Pre-planning 1 / 298]
[Planning deferred tasks]
[51 / 102]
[52 / 103] OpenTelemetryApi
[62 / 150]
[67 / 150]
[71 / 150]
[72 / 150]
[76 / 150]
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[81 / 150]
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[88 / 150]
[99 / 150] OpenTelemetryApi
[101 / 150] OpenTelemetryApi
[110 / 152] OpenTelemetryConcurrency
[118 / 154] OpenTelemetrySdk
[129 / 165] OpenTelemetrySdk
[132 / 165] OpenTelemetrySdk
[140 / 167] OpenTelemetrySdk
[144 / 171] OpenTelemetrySdk
[156 / 172] OpenTelemetrySdk-product
[156 / 172] StdoutExporter
[159 / 172] ConcurrencyContext-product
[162 / 174] OpenTelemetryTestUtils
[175 / 206]
[182 / 206]
[184 / 206]
[189 / 206]
[191 / 206]
[192 / 206]
[195 / 206]
[196 / 206]
[198 / 206] OpenTelemetryTestUtils
[204 / 206] OpenTelemetryTestUtils
Build complete! (13.44 sec)
warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package.swift:13:15: warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
11 |     .iOS(.v12),
12 |     .tvOS(.v12),
13 |     .watchOS(.v4),
   |               `- warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
14 |     .visionOS(.v1),
15 |   ],
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
Fetching https://github.com/apple/swift-atomics.git
[1/1885] Fetching swift-atomics
Fetched https://github.com/apple/swift-atomics.git (1.30s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.1 (1.91s)
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.3.1
/Users/admin/builder/spi-builder-workspace/Sources/OpenTelemetryApi/Context/TaskLocalContextManager.swift:42:38: [1;33mwarning: [1;39m'withValue(_:operation:isolation:file:line:)' is deprecated: Prefer the 'nonisolated(nonsending)' overload with stricter execution on caller context semantics: withValue(_:operation:file:line:)[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m40 |[0;0m       context[key.rawValue] = SendableWrapper(value: value)
[0;36m41 |[0;0m
[0;36m42 |[0;0m       return try await Self.$context.withValue(context, operation: operation)
   [0;36m|[0;0m                                      `- [1;33mwarning: [1;39m'withValue(_:operation:isolation:file:line:)' is deprecated: Prefer the 'nonisolated(nonsending)' overload with stricter execution on caller context semantics: withValue(_:operation:file:line:)[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
[0;36m43 |[0;0m     }
[0;36m44 |[0;0m
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
/Users/admin/builder/spi-builder-workspace/Sources/OpenTelemetrySdk/Metrics/Data/Internal/Base2ExponentialHistogramIndexer.swift:11:3: [1;33mwarning: [1;39m'nonisolated(unsafe)' is unnecessary for a constant with 'Sendable' type 'Lock', consider removing it[0;0m
 [0;36m9 |[0;0m public final class Base2ExponentialHistogramIndexer: Codable, Sendable {
[0;36m10 |[0;0m   nonisolated(unsafe) private static var cache = [Int: Base2ExponentialHistogramIndexer]()
[0;36m11 |[0;0m   nonisolated(unsafe) private static let cacheLock = Lock()
   [0;36m|[0;0m   `- [1;33mwarning: [1;39m'nonisolated(unsafe)' is unnecessary for a constant with 'Sendable' type 'Lock', consider removing it[0;0m
[0;36m12 |[0;0m
[0;36m13 |[0;0m   private let scale: Int
/Users/admin/builder/spi-builder-workspace/Sources/OpenTelemetrySdk/Metrics/Data/Internal/Base2ExponentialHistogramIndexer.swift:11:3: [1;33mwarning: [1;39m'nonisolated(unsafe)' is unnecessary for a constant with 'Sendable' type 'Lock', consider removing it[0;0m
 [0;36m9 |[0;0m public final class Base2ExponentialHistogramIndexer: Codable, Sendable {
[0;36m10 |[0;0m   nonisolated(unsafe) private static var cache = [Int: Base2ExponentialHistogramIndexer]()
[0;36m11 |[0;0m   nonisolated(unsafe) private static let cacheLock = Lock()
   [0;36m|[0;0m   `- [1;33mwarning: [1;39m'nonisolated(unsafe)' is unnecessary for a constant with 'Sendable' type 'Lock', consider removing it[0;0m
[0;36m12 |[0;0m
[0;36m13 |[0;0m   private let scale: Int
/Users/admin/builder/spi-builder-workspace/Examples/ConcurrencyContext/main.swift:44:91: [1;33mwarning: [1;39msending value of non-Sendable type 'any SpanBuilderBase' risks causing data races[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/region-isolation\RegionIsolation]8;;\::]8;;https://docs.swift.org/compiler/documentation/diagnostics/sending-risks-data-race\SendingRisksDataRace]8;;\]
[0;36m42 |[0;0m     func childSpan() async throws {
[0;36m43 |[0;0m       // SpanBuilder's `setActive` method is not available here, since it isn't compatible with structured concurrency based context management
[0;36m44 |[0;0m       try await tracer.spanBuilder(spanName: "parentSpan").setSpanKind(spanKind: .client).withActiveSpan { @Sendable span in
   [0;36m|[0;0m                                                            |                              |- [1;33mwarning: [1;39msending value of non-Sendable type 'any SpanBuilderBase' risks causing data races[0;0m [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/region-isolation\RegionIsolation]8;;\::]8;;https://docs.swift.org/compiler/documentation/diagnostics/sending-risks-data-race\SendingRisksDataRace]8;;\]
   [0;36m|[0;0m                                                            |                              `- [1;39mnote: [1;39msending value of non-Sendable type 'any SpanBuilderBase' to @concurrent instance method 'withActiveSpan' risks causing races in between code in the current isolation context and @concurrent uses[0;0m
   [0;36m|[0;0m                                                            `- [1;39mnote: [1;39misolated conformance to protocol 'SpanBuilderBase' can be introduced here[0;0m
[0;36m45 |[0;0m         span.setAttribute(key: sampleKey, value: sampleValue)
[0;36m46 |[0;0m         await Task.detached { @Sendable in
[#RegionIsolation]: <https://docs.swift.org/compiler/documentation/diagnostics/region-isolation>
[#SendingRisksDataRace]: <https://docs.swift.org/compiler/documentation/diagnostics/sending-risks-data-race>
Build complete.
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        "Common/SemanticAttributes/Attributes/Rpc_attributes.swift",
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        "Common/SemanticAttributes/Attributes/Server_attributes.swift",
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}
warning: 'spi-builder-workspace': /Users/admin/builder/spi-builder-workspace/Package.swift:13:15: warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
11 |     .iOS(.v12),
12 |     .tvOS(.v12),
13 |     .watchOS(.v4),
   |               `- warning: 'v4' is deprecated: watchOS 9.0 is the oldest supported version [#DeprecatedDeclaration]
14 |     .visionOS(.v1),
15 |   ],
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
Done.