Swift Package IndexBuild Information
Failed to build swiftui-messaging-ui, reference main (782980), with Swift 6.3 for Wasm on 18 Apr 2026 20:25:29 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/FluidGroup/swiftui-messaging-ui.git
Reference: main
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/FluidGroup/swiftui-messaging-ui
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 782980c Fix supplementary view self-sizing corrupting cell heights (#32)
Cloned https://github.com/FluidGroup/swiftui-messaging-ui.git
Revision (git rev-parse @):
782980cb458dfdce795a3643a769099aa4025349
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/FluidGroup/swiftui-messaging-ui.git at main
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/FluidGroup/swiftui-messaging-ui.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d69f4e7582c319245442d62a08b2d7c7fd5a0c0c69f5d2ef11d1530cd8d3329b
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest
Fetching https://github.com/apple/swift-collections
Fetching https://github.com/FluidGroup/swift-rubber-banding
[1/13] Fetching swift-rubber-banding
[14/23582] Fetching swift-rubber-banding, swift-collections
Fetched https://github.com/FluidGroup/swift-rubber-banding from cache (0.56s)
[1886/23569] Fetching swift-collections
Fetching https://github.com/FluidGroup/swift-with-prerender
Fetched https://github.com/apple/swift-collections from cache (2.50s)
[1/49] Fetching swift-with-prerender
Fetched https://github.com/FluidGroup/swift-with-prerender from cache (0.49s)
Computing version for https://github.com/FluidGroup/swift-rubber-banding
Computed https://github.com/FluidGroup/swift-rubber-banding at 1.0.0 (4.33s)
Computing version for https://github.com/FluidGroup/swift-with-prerender
Computed https://github.com/FluidGroup/swift-with-prerender at 1.1.0 (0.52s)
Computing version for https://github.com/apple/swift-collections
Computed https://github.com/apple/swift-collections at 1.4.1 (0.78s)
Creating working copy for https://github.com/apple/swift-collections
Working copy of https://github.com/apple/swift-collections resolved at 1.4.1
Creating working copy for https://github.com/FluidGroup/swift-with-prerender
Working copy of https://github.com/FluidGroup/swift-with-prerender resolved at 1.1.0
Creating working copy for https://github.com/FluidGroup/swift-rubber-banding
Working copy of https://github.com/FluidGroup/swift-rubber-banding resolved at 1.0.0
Building for debugging...
[0/8] Write sources
[7/8] Write swift-version-24593BA9C3E375BF.txt
[9/30] Emitting module InternalCollectionsUtilities
error: emit-module command failed with exit code 1 (use -v to see invocation)
[10/32] Emitting module CATransactionQueue
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/CoreFoundation.h:28:10: note: while building module 'wasi_emulated_signal' imported from /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/CoreFoundation.h:28:
26 | #include <setjmp.h>
27 | #endif
28 | #include <signal.h>
| `- note: while building module 'wasi_emulated_signal' imported from /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/CoreFoundation.h:28:
29 | #include <stddef.h>
30 | #include <stdio.h>
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "signal.h"
| `- note: in file included from <module-includes>:1:
2 |
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/signal.h:2:2: error: "wasm lacks signal support; to enable minimal signal emulation, compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
1 | #ifndef _WASI_EMULATED_SIGNAL
2 | #error "wasm lacks signal support; to enable minimal signal emulation, \
| `- error: "wasm lacks signal support; to enable minimal signal emulation, compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
3 | compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
4 | #else
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "CoreFoundation.h"
| `- note: in file included from <module-includes>:1:
2 |
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/CoreFoundation.h:28:10: error: could not build module 'wasi_emulated_signal'
26 | #include <setjmp.h>
27 | #endif
28 | #include <signal.h>
| `- error: could not build module 'wasi_emulated_signal'
29 | #include <stddef.h>
30 | #include <stdio.h>
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/ForSwiftFoundationOnly.h:86:10: note: while building module 'wasi_emulated_mman' imported from /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/ForSwiftFoundationOnly.h:86:
84 | #undef _WASI_EMULATED_MMAN
85 | #define _WASI_EMULATED_MMAN
86 | #include <sys/mman.h>
| `- note: while building module 'wasi_emulated_mman' imported from /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/ForSwiftFoundationOnly.h:86:
87 | #elif TARGET_OS_LINUX
88 | #include <errno.h>
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "sys/mman.h"
| `- note: in file included from <module-includes>:1:
2 |
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/sys/mman.h:2:2: error: "WASI lacks a true mmap; to enable minimal mmap emulation, compile with -D_WASI_EMULATED_MMAN and link with -lwasi-emulated-mman"
1 | #ifndef _WASI_EMULATED_MMAN
2 | #error "WASI lacks a true mmap; to enable minimal mmap emulation, \
| `- error: "WASI lacks a true mmap; to enable minimal mmap emulation, compile with -D_WASI_EMULATED_MMAN and link with -lwasi-emulated-mman"
3 | compile with -D_WASI_EMULATED_MMAN and link with -lwasi-emulated-mman"
4 | #else
/host/spi-builder-workspace/.build/checkouts/swift-with-prerender/Sources/CATransactionQueue/CATransactionQueue.swift:2:8: error: could not build C module 'CoreFoundation'
1 | import Foundation
2 | import CoreFoundation
| `- error: could not build C module 'CoreFoundation'
3 |
4 | // from Texture(AsyncDisplayKit)
[11/32] Compiling RubberBanding rubberBand.swift
[12/32] Emitting module RubberBanding
[13/33] Compiling InternalCollectionsUtilities _SortedCollection.swift
[14/33] Compiling InternalCollectionsUtilities _UniqueCollection.swift
[16/33] Compiling InternalCollectionsUtilities UnsafeMutableRawBufferPointer+Extras.swift
[17/33] Compiling InternalCollectionsUtilities UnsafeRawBufferPointer+Extras.swift
[18/33] Compiling InternalCollectionsUtilities _UnsafeBitSet+_Word.swift
[19/33] Compiling InternalCollectionsUtilities _UnsafeBitSet.swift
[20/33] Compiling InternalCollectionsUtilities UnsafeBufferPointer+Extras.swift
[21/33] Compiling InternalCollectionsUtilities UnsafeMutableBufferPointer+Extras.swift
[22/33] Compiling InternalCollectionsUtilities Debugging.swift
[23/33] Compiling InternalCollectionsUtilities Descriptions.swift
[24/33] Compiling InternalCollectionsUtilities FixedWidthInteger+roundUpToPowerOfTwo.swift
[25/33] Compiling InternalCollectionsUtilities String+Padding.swift
[26/33] Compiling InternalCollectionsUtilities _UnsafeBitSet+Index.swift
[27/33] Compiling InternalCollectionsUtilities LifetimeOverride.swift
[28/33] Compiling InternalCollectionsUtilities RandomAccessCollection+Offsets.swift
[29/33] Compiling InternalCollectionsUtilities Span+Extras.swift
[30/33] Compiling InternalCollectionsUtilities Integer rank.swift
[31/33] Compiling InternalCollectionsUtilities UInt+first and last set bit.swift
[32/33] Compiling InternalCollectionsUtilities UInt+reversed.swift
[34/67] Compiling ContainersPreview BorrowingIteratorProtocol+Map.swift
[35/67] Compiling ContainersPreview BorrowingIteratorProtocol+Reduce.swift
[36/67] Compiling ContainersPreview BorrowingIteratorProtocol+SpanwiseZip.swift
[37/67] Compiling ContainersPreview BorrowingIteratorProtocol.swift
[38/67] Compiling ContainersPreview BorrowingSequence+Standard Conformances.swift
[39/71] Compiling ContainersPreview BorrowingSequence+Utilities.swift
[40/71] Compiling ContainersPreview BorrowingSequence.swift
[41/71] Compiling ContainersPreview BidirectionalContainer.swift
[42/71] Compiling ContainersPreview Container+Filter.swift
[43/71] Compiling ContainersPreview Container+SpanwiseZip.swift
[44/71] Compiling ContainersPreview Drain+Reduce.swift
[45/71] Compiling ContainersPreview Drain.swift
[46/71] Compiling ContainersPreview Producer+Collect.swift
[47/71] Compiling ContainersPreview Producer+Filter.swift
[48/71] Compiling ContainersPreview RandomAccessContainer.swift
[49/71] Compiling ContainersPreview RangeExpression2.swift
[50/71] Compiling ContainersPreview RangeReplaceableContainer.swift
[51/71] Compiling ContainersPreview Drain+Map.swift
[52/71] Compiling ContainersPreview Producer+Map.swift
[53/71] Compiling ContainersPreview Producer+Reduce.swift
[54/71] Compiling ContainersPreview Producer.swift
[55/71] Compiling ContainersPreview Borrow.swift
[56/71] Compiling ContainersPreview Container.swift
[57/71] Compiling ContainersPreview ContainerIterator.swift
[58/71] Compiling ContainersPreview DynamicContainer.swift
[59/71] Compiling ContainersPreview MutableContainer.swift
[60/71] Compiling ContainersPreview PermutableContainer.swift
[61/71] Emitting module ContainersPreview
[62/71] Compiling ContainersPreview Box.swift
[63/71] Compiling ContainersPreview Inout.swift
[64/71] Compiling ContainersPreview InputSpan.swift
[65/71] Compiling ContainersPreview Shared.swift
[66/71] Compiling ContainersPreview OutputSpan+Extras.swift
[67/71] Compiling ContainersPreview TemporaryAllocation.swift
[68/71] Compiling ContainersPreview BorrowingIteratorProtocol+Copy.swift
[69/71] Compiling ContainersPreview BorrowingIteratorProtocol+ElementsEqual.swift
[70/71] Compiling ContainersPreview BorrowingIteratorProtocol+Filter.swift
[72/112] Compiling DequeModule _DequeBuffer.swift
[73/112] Compiling DequeModule _DequeBufferHeader.swift
[74/112] Compiling DequeModule RigidDeque+Append.swift
[75/112] Compiling DequeModule RigidDeque+Consumption.swift
[76/112] Compiling DequeModule RigidDeque+Container.swift
[77/112] Compiling DequeModule RigidDeque+Descriptions.swift
[78/112] Compiling DequeModule UniqueDeque+Consumption.swift
[79/112] Compiling DequeModule UniqueDeque+Container.swift
[80/112] Compiling DequeModule UniqueDeque+Descriptions.swift
[81/112] Compiling DequeModule UniqueDeque+Equatable.swift
[82/112] Compiling DequeModule UniqueDeque+Experimental.swift
[83/112] Compiling DequeModule UniqueDeque+Hashable.swift
[84/112] Compiling DequeModule UniqueDeque+Initializers.swift
[85/112] Compiling DequeModule UniqueDeque+Insertions.swift
[86/112] Compiling DequeModule UniqueDeque+Prepend.swift
[87/112] Compiling DequeModule UniqueDeque+Removals.swift
[88/117] Compiling CATransactionQueue CATransactionQueue.swift
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/CoreFoundation.h:28:10: note: while building module 'wasi_emulated_signal' imported from /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/CoreFoundation.h:28:
26 | #include <setjmp.h>
27 | #endif
28 | #include <signal.h>
| `- note: while building module 'wasi_emulated_signal' imported from /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/CoreFoundation.h:28:
29 | #include <stddef.h>
30 | #include <stdio.h>
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "signal.h"
| `- note: in file included from <module-includes>:1:
2 |
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/signal.h:2:2: error: "wasm lacks signal support; to enable minimal signal emulation, compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
1 | #ifndef _WASI_EMULATED_SIGNAL
2 | #error "wasm lacks signal support; to enable minimal signal emulation, \
| `- error: "wasm lacks signal support; to enable minimal signal emulation, compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
3 | compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
4 | #else
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "CoreFoundation.h"
| `- note: in file included from <module-includes>:1:
2 |
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/CoreFoundation.h:28:10: error: could not build module 'wasi_emulated_signal'
26 | #include <setjmp.h>
27 | #endif
28 | #include <signal.h>
| `- error: could not build module 'wasi_emulated_signal'
29 | #include <stddef.h>
30 | #include <stdio.h>
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/ForSwiftFoundationOnly.h:86:10: note: while building module 'wasi_emulated_mman' imported from /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/ForSwiftFoundationOnly.h:86:
84 | #undef _WASI_EMULATED_MMAN
85 | #define _WASI_EMULATED_MMAN
86 | #include <sys/mman.h>
| `- note: while building module 'wasi_emulated_mman' imported from /root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/CoreFoundation/ForSwiftFoundationOnly.h:86:
87 | #elif TARGET_OS_LINUX
88 | #include <errno.h>
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "sys/mman.h"
| `- note: in file included from <module-includes>:1:
2 |
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/sys/mman.h:2:2: error: "WASI lacks a true mmap; to enable minimal mmap emulation, compile with -D_WASI_EMULATED_MMAN and link with -lwasi-emulated-mman"
1 | #ifndef _WASI_EMULATED_MMAN
2 | #error "WASI lacks a true mmap; to enable minimal mmap emulation, \
| `- error: "WASI lacks a true mmap; to enable minimal mmap emulation, compile with -D_WASI_EMULATED_MMAN and link with -lwasi-emulated-mman"
3 | compile with -D_WASI_EMULATED_MMAN and link with -lwasi-emulated-mman"
4 | #else
/host/spi-builder-workspace/.build/checkouts/swift-with-prerender/Sources/CATransactionQueue/CATransactionQueue.swift:2:8: error: could not build C module 'CoreFoundation'
1 | import Foundation
2 | import CoreFoundation
| `- error: could not build C module 'CoreFoundation'
3 |
4 | // from Texture(AsyncDisplayKit)
BUILD FAILURE 6.3 wasm