Swift Package IndexBuild Information
Failed to build swift-memory-allocation, reference 0.2.0 (afe7e8), with Swift 6.2 for Wasm on 19 Dec 2025 18:47:39 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1Build Log
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RunAll
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Builder version: 4.68.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/coenttb/swift-memory-allocation.git
Reference: 0.2.0
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
From https://github.com/coenttb/swift-memory-allocation
* tag 0.2.0 -> FETCH_HEAD
HEAD is now at afe7e86 fix: add Windows support using Swift 6 Mutex
Cloned https://github.com/coenttb/swift-memory-allocation.git
Revision (git rev-parse @):
afe7e86f16981007b841470d5ea79f0026868bc3
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/coenttb/swift-memory-allocation.git at 0.2.0
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Build
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Selected platform: wasm
Swift version: 6.2
Building package at path: $PWD
https://github.com/coenttb/swift-memory-allocation.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1
wasm-6.2-latest: Pulling from finestructure/spi-images
Digest: sha256:ea378e7d7954b9ce813c0ebc8f6bc113436e2b3d5aa4fd45225da8bf07e6be73
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest
warning: multiple Swift SDKs match target triple `wasm32-unknown-wasip1` and host triple x86_64-unknown-linux-gnu, selected one at /root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/embedded-swift-sdk.json
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/4] Emitting module MemoryAllocation
/host/spi-builder-workspace/Sources/MemoryAllocation/AllocationProfiler.swift:29:32: error: cannot find 'Mutex' in scope
27 | /// ```
28 | public final class AllocationProfiler: Sendable {
29 | private let measurements = Mutex<[AllocationStats]>([])
| `- error: cannot find 'Mutex' in scope
30 |
31 | /// Initialize an allocation profiler
/host/spi-builder-workspace/Sources/MemoryAllocation/AllocationProfiler.swift:102:32: error: cannot infer key path type from context; consider explicitly specifying a root type
100 | guard !m.isEmpty else { return 0 }
101 |
102 | let sorted = m.map(\.bytesAllocated).sorted()
| `- error: cannot infer key path type from context; consider explicitly specifying a root type
103 | let index = Int(Double(sorted.count) * Double(percentile) / 100.0)
104 | return sorted[min(index, sorted.count - 1)]
/host/spi-builder-workspace/Sources/MemoryAllocation/AllocationProfiler.swift:130:32: error: cannot infer key path type from context; consider explicitly specifying a root type
128 | guard !m.isEmpty else { return 0 }
129 |
130 | let sorted = m.map(\.allocations).sorted()
| `- error: cannot infer key path type from context; consider explicitly specifying a root type
131 | let index = Int(Double(sorted.count) * Double(percentile) / 100.0)
132 | return sorted[min(index, sorted.count - 1)]
/host/spi-builder-workspace/Sources/MemoryAllocation/AllocationProfiler.swift:142:31: error: cannot infer key path type from context; consider explicitly specifying a root type
140 | public func histogram(buckets: Int = 10) -> AllocationHistogram {
141 | measurements.withLock { m in
142 | let bytes = m.map(\.bytesAllocated)
| `- error: cannot infer key path type from context; consider explicitly specifying a root type
143 | return AllocationHistogram(values: bytes, buckets: buckets)
144 | }
/host/spi-builder-workspace/Sources/MemoryAllocation/Lock.swift:8:21: error: cannot find type 'Mutex' in scope
6 | import Synchronization
7 |
8 | typealias Lock<T> = Mutex<T>
| `- error: cannot find type 'Mutex' in scope
9 |
/host/spi-builder-workspace/Sources/MemoryAllocation/PeakMemoryTracker.swift:31:25: error: cannot find 'Mutex' in scope
29 | }
30 |
31 | private let state = Mutex<State>(State())
| `- error: cannot find 'Mutex' in scope
32 | private let baseline: AllocationStats
33 |
[4/4] Compiling MemoryAllocation AllocationProfiler.swift
/host/spi-builder-workspace/Sources/MemoryAllocation/AllocationProfiler.swift:29:32: error: cannot find 'Mutex' in scope
27 | /// ```
28 | public final class AllocationProfiler: Sendable {
29 | private let measurements = Mutex<[AllocationStats]>([])
| `- error: cannot find 'Mutex' in scope
30 |
31 | /// Initialize an allocation profiler
/host/spi-builder-workspace/Sources/MemoryAllocation/AllocationProfiler.swift:102:32: error: cannot infer key path type from context; consider explicitly specifying a root type
100 | guard !m.isEmpty else { return 0 }
101 |
102 | let sorted = m.map(\.bytesAllocated).sorted()
| `- error: cannot infer key path type from context; consider explicitly specifying a root type
103 | let index = Int(Double(sorted.count) * Double(percentile) / 100.0)
104 | return sorted[min(index, sorted.count - 1)]
/host/spi-builder-workspace/Sources/MemoryAllocation/AllocationProfiler.swift:130:32: error: cannot infer key path type from context; consider explicitly specifying a root type
128 | guard !m.isEmpty else { return 0 }
129 |
130 | let sorted = m.map(\.allocations).sorted()
| `- error: cannot infer key path type from context; consider explicitly specifying a root type
131 | let index = Int(Double(sorted.count) * Double(percentile) / 100.0)
132 | return sorted[min(index, sorted.count - 1)]
/host/spi-builder-workspace/Sources/MemoryAllocation/AllocationProfiler.swift:142:31: error: cannot infer key path type from context; consider explicitly specifying a root type
140 | public func histogram(buckets: Int = 10) -> AllocationHistogram {
141 | measurements.withLock { m in
142 | let bytes = m.map(\.bytesAllocated)
| `- error: cannot infer key path type from context; consider explicitly specifying a root type
143 | return AllocationHistogram(values: bytes, buckets: buckets)
144 | }
/host/spi-builder-workspace/Sources/MemoryAllocation/Lock.swift:8:21: error: cannot find type 'Mutex' in scope
6 | import Synchronization
7 |
8 | typealias Lock<T> = Mutex<T>
| `- error: cannot find type 'Mutex' in scope
9 |
/host/spi-builder-workspace/Sources/MemoryAllocation/PeakMemoryTracker.swift:31:25: error: cannot find 'Mutex' in scope
29 | }
30 |
31 | private let state = Mutex<State>(State())
| `- error: cannot find 'Mutex' in scope
32 | private let baseline: AllocationStats
33 |
BUILD FAILURE 6.2 wasm