Swift Package IndexBuild Information
Failed to build swift-transformers, reference 1.3.0 (b38443), with Swift 6.2 for Wasm on 23 Mar 2026 19:16:56 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1Build Log
========================================
RunAll
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Builder version: 4.69.2
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/huggingface/swift-transformers.git
Reference: 1.3.0
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/huggingface/swift-transformers
* tag 1.3.0 -> FETCH_HEAD
HEAD is now at b38443e Add Swift 6.1 manifest to forward Xet trait to `swift-huggingface` dependency (#334)
Cloned https://github.com/huggingface/swift-transformers.git
Revision (git rev-parse @):
b38443e44d93eca770f2eb68e2a4d0fa100f9aa2
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/huggingface/swift-transformers.git at 1.3.0
========================================
Build
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Selected platform: wasm
Swift version: 6.2
Building package at path: $PWD
https://github.com/huggingface/swift-transformers.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1
wasm-6.2-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:33aba1b4ee401c56e0fd7ee42e05ab1ffc0b6f44277ad19cffda5d456eb09500
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/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
Fetching https://github.com/apple/swift-collections.git
Fetching https://github.com/huggingface/swift-huggingface.git
Fetching https://github.com/apple/swift-crypto.git
Fetching https://github.com/ibireme/yyjson.git
Fetching https://github.com/huggingface/swift-jinja.git
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[5964/47625] Fetching swift-jinja, swift-huggingface, swift-collections, yyjson, swift-crypto
Fetched https://github.com/huggingface/swift-huggingface.git from cache (1.01s)
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Fetched https://github.com/ibireme/yyjson.git from cache (2.80s)
Fetched https://github.com/apple/swift-collections.git from cache (2.84s)
Fetched https://github.com/apple/swift-crypto.git from cache (2.85s)
Computing version for https://github.com/ibireme/yyjson.git
Computed https://github.com/ibireme/yyjson.git at 0.12.0 (5.85s)
Computing version for https://github.com/huggingface/swift-huggingface.git
Computed https://github.com/huggingface/swift-huggingface.git at 0.9.0 (0.51s)
Fetching https://github.com/mattt/EventSource.git
[1/271] Fetching eventsource
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Computing version for https://github.com/mattt/EventSource.git
Computed https://github.com/mattt/EventSource.git at 1.4.1 (0.72s)
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Fetched https://github.com/apple/swift-nio.git from cache (6.82s)
Computing version for https://github.com/huggingface/swift-jinja.git
Computed https://github.com/huggingface/swift-jinja.git at 2.3.2 (7.33s)
Computing version for https://github.com/apple/swift-collections.git
Computed https://github.com/apple/swift-collections.git at 1.4.1 (0.65s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 2.97.0 (1.00s)
Fetching https://github.com/apple/swift-system.git
Fetching https://github.com/apple/swift-atomics.git
[1/1820] Fetching swift-atomics
[1548/7421] Fetching swift-atomics, swift-system
Fetched https://github.com/apple/swift-atomics.git from cache (0.52s)
Fetched https://github.com/apple/swift-system.git from cache (0.53s)
Computing version for https://github.com/apple/swift-atomics.git
Computed https://github.com/apple/swift-atomics.git at 1.3.0 (1.17s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.6.4 (0.78s)
Computing version for https://github.com/apple/swift-crypto.git
Computed https://github.com/apple/swift-crypto.git at 4.3.0 (4.94s)
Fetching https://github.com/apple/swift-asn1.git
[1/1769] Fetching swift-asn1
Fetched https://github.com/apple/swift-asn1.git from cache (0.49s)
Computing version for https://github.com/apple/swift-asn1.git
Computed https://github.com/apple/swift-asn1.git at 1.6.0 (1.36s)
Creating working copy for https://github.com/apple/swift-asn1.git
Working copy of https://github.com/apple/swift-asn1.git resolved at 1.6.0
Creating working copy for https://github.com/ibireme/yyjson.git
Working copy of https://github.com/ibireme/yyjson.git resolved at 0.12.0
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 2.97.0
Creating working copy for https://github.com/apple/swift-atomics.git
Working copy of https://github.com/apple/swift-atomics.git resolved at 1.3.0
Creating working copy for https://github.com/apple/swift-collections.git
Working copy of https://github.com/apple/swift-collections.git resolved at 1.4.1
Creating working copy for https://github.com/apple/swift-crypto.git
Working copy of https://github.com/apple/swift-crypto.git resolved at 4.3.0
Creating working copy for https://github.com/huggingface/swift-huggingface.git
Working copy of https://github.com/huggingface/swift-huggingface.git resolved at 0.9.0
Creating working copy for https://github.com/mattt/EventSource.git
Working copy of https://github.com/mattt/EventSource.git resolved at 1.4.1
Creating working copy for https://github.com/apple/swift-system.git
Working copy of https://github.com/apple/swift-system.git resolved at 1.6.4
Creating working copy for https://github.com/huggingface/swift-jinja.git
Working copy of https://github.com/huggingface/swift-jinja.git resolved at 2.3.2
Building for debugging...
[0/404] Write sources
[0/404] Copying t5_tokenizer_config.json
[0/404] Copying gpt2_tokenizer_config.json
[0/404] Write sources
[12/404] Write swift-version-24593BA9C3E375BF.txt
[13/404] Write sources
[15/406] Compiling rand.cc
[16/406] Compiling trusty.cc
[17/406] Compiling urandom.cc
[18/406] Compiling passive.cc
[19/406] Write sources
[24/406] Compiling getentropy.cc
error: emit-module command failed with exit code 1 (use -v to see invocation)
[26/406] Emitting module _NIODataStructures
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:27:8: error: The Heap module was unable to identify your C library.
25 | @preconcurrency import Bionic
26 | #else
27 | #error("The Heap module was unable to identify your C library.")
| `- error: The Heap module was unable to identify your C library.
28 | #endif
29 |
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:170:47: error: 'init(describing:)' is unavailable: unavailable in embedded Swift
168 | return "<empty heap>"
169 | }
170 | let descriptions = self.storage.map { String(describing: $0) }
| `- error: 'init(describing:)' is unavailable: unavailable in embedded Swift
171 | let maxLen: Int = descriptions.map { $0.count }.max()! // storage checked non-empty above
172 | let paddedDescs = descriptions.map { (desc: String) -> String in
Swift.String.init:2:8: note: 'init(describing:)' has been explicitly marked unavailable here
1 | struct String {
2 | public init<Subject>(describing instance: Subject)}
| `- note: 'init(describing:)' has been explicitly marked unavailable here
3 |
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:208:21: error: cannot find 'log2' in scope
206 |
207 | func height(index: Int) -> Int {
208 | Int(log2(Double(index + 1)))
| `- error: cannot find 'log2' in scope
209 | }
210 | let myHeight = height(index: index)
[26/406] Compiling _AtomicsShims.c
[27/406] Compiling CXKCPShims shims.c
[28/406] Compiling SimpleFIPS202.c
[29/406] Compiling KeccakSponge.c
[30/407] Compiling KeccakHash.c
[31/410] Compiling CNIOWindows WSAStartup.c
[32/410] Compiling ios.cc
[33/410] Compiling CNIOWindows shim.c
[34/410] Compiling CNIOWASI CNIOWASI.c
[35/410] Compiling CNIOLinux shim.c
[36/410] Compiling CNIOOpenBSD shim.c
[37/410] Compiling CNIODarwin shim.c
[38/410] Compiling CNIOLinux liburing_shims.c
[39/410] Compiling CCryptoBoringSSLShims shims.c
[41/410] Compiling _NIODataStructures Heap.swift
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:27:8: error: The Heap module was unable to identify your C library.
25 | @preconcurrency import Bionic
26 | #else
27 | #error("The Heap module was unable to identify your C library.")
| `- error: The Heap module was unable to identify your C library.
28 | #endif
29 |
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:170:47: error: 'init(describing:)' is unavailable: unavailable in embedded Swift
168 | return "<empty heap>"
169 | }
170 | let descriptions = self.storage.map { String(describing: $0) }
| `- error: 'init(describing:)' is unavailable: unavailable in embedded Swift
171 | let maxLen: Int = descriptions.map { $0.count }.max()! // storage checked non-empty above
172 | let paddedDescs = descriptions.map { (desc: String) -> String in
Swift.String.init:2:8: note: 'init(describing:)' has been explicitly marked unavailable here
1 | struct String {
2 | public init<Subject>(describing instance: Subject)}
| `- note: 'init(describing:)' has been explicitly marked unavailable here
3 |
/host/spi-builder-workspace/.build/checkouts/swift-nio/Sources/_NIODataStructures/Heap.swift:208:21: error: cannot find 'log2' in scope
206 |
207 | func height(index: Int) -> Int {
208 | Int(log2(Double(index + 1)))
| `- error: cannot find 'log2' in scope
209 | }
210 | let myHeight = height(index: index)
[41/410] Compiling c-atomics.c
[41/410] Compiling KeccakP-1600-opt64.c
[41/410] Compiling fiat_p256_adx_sqr.S
[41/410] Compiling yyjson.c
[41/410] Compiling c-nioatomics.c
BUILD FAILURE 6.2 wasm