Swift Package IndexBuild Information
Failed to build swift-mcp-gui, reference 0.1.0 (8902cb), with Swift 6.3 for macOS (SPM) on 17 Apr 2026 23:18:11 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.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/NakaokaRei/swift-mcp-gui.git
Reference: 0.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/NakaokaRei/swift-mcp-gui
* tag 0.1.0 -> FETCH_HEAD
HEAD is now at 8902cbc Merge pull request #24 from NakaokaRei/feature/capture-output-format
Cloned https://github.com/NakaokaRei/swift-mcp-gui.git
Revision (git rev-parse @):
8902cbc20e4ae7aee8adf34005ae560b28730490
SUCCESS checkout https://github.com/NakaokaRei/swift-mcp-gui.git at 0.1.0
Fetching https://github.com/yeatse/opencv-spm.git
Fetching https://github.com/modelcontextprotocol/swift-sdk.git
Fetching https://github.com/apple/swift-log.git
Fetching https://github.com/apple/swift-system.git
Fetching https://github.com/mattt/eventsource.git
Fetching https://github.com/NakaokaRei/SwiftAutoGUI.git
[1/364] Fetching opencv-spm
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[279/1950] Fetching opencv-spm, eventsource, swiftautogui
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[878/17660] Fetching opencv-spm, eventsource, swiftautogui, swift-sdk, swift-system, swift-log
Fetched https://github.com/yeatse/opencv-spm.git from cache (0.79s)
[580/17296] Fetching eventsource, swiftautogui, swift-sdk, swift-system, swift-log
Fetched https://github.com/NakaokaRei/SwiftAutoGUI.git from cache (0.95s)
[4580/15981] Fetching eventsource, swift-sdk, swift-system, swift-log
Fetched https://github.com/mattt/eventsource.git from cache (1.15s)
[13123/15710] Fetching swift-sdk, swift-system, swift-log
Fetched https://github.com/apple/swift-log.git from cache (1.27s)
Fetched https://github.com/apple/swift-system.git from cache (1.28s)
Fetched https://github.com/modelcontextprotocol/swift-sdk.git from cache (1.28s)
Creating working copy for https://github.com/apple/swift-system.git
Creating working copy for https://github.com/NakaokaRei/SwiftAutoGUI.git
Creating working copy for https://github.com/mattt/eventsource.git
Creating working copy for https://github.com/yeatse/opencv-spm.git
Creating working copy for https://github.com/apple/swift-log.git
Creating working copy for https://github.com/modelcontextprotocol/swift-sdk.git
Working copy of https://github.com/yeatse/opencv-spm.git resolved at 4.13.0
Working copy of https://github.com/mattt/eventsource.git resolved at 1.3.0
Working copy of https://github.com/modelcontextprotocol/swift-sdk.git resolved at 0.10.2
Working copy of https://github.com/apple/swift-system.git resolved at 1.6.4
Working copy of https://github.com/NakaokaRei/SwiftAutoGUI.git resolved at 0.13.0
Working copy of https://github.com/apple/swift-log.git resolved at 1.9.1
Downloading binary artifact https://github.com/yeatse/opencv-spm/releases/download/4.13.0/opencv2.xcframework.zip
[16375/200350637] Downloading https://github.com/yeatse/opencv-spm/releases/download/4.13.0/opencv2.xcframework.zip
Downloaded https://github.com/yeatse/opencv-spm/releases/download/4.13.0/opencv2.xcframework.zip (11.97s)
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ResolveProductDependencies
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Resolving dependencies ...
{
"identity": ".resolve-product-dependencies",
"name": "resolve-dependencies",
"url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"traits": [
"default"
],
"dependencies": [
{
"identity": "swift-mcp-gui",
"name": "swift-mcp-gui",
"url": "https://github.com/NakaokaRei/swift-mcp-gui.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-mcp-gui",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
Fetching https://github.com/NakaokaRei/swift-mcp-gui.git
[1/391] Fetching swift-mcp-gui
Fetched https://github.com/NakaokaRei/swift-mcp-gui.git from cache (0.67s)
Creating working copy for https://github.com/NakaokaRei/swift-mcp-gui.git
Working copy of https://github.com/NakaokaRei/swift-mcp-gui.git resolved at 0.1.0 (8902cbc)
warning: '.resolve-product-dependencies': dependency 'swift-mcp-gui' is not used by any target
Found 0 product dependencies
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Build
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Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/NakaokaRei/swift-mcp-gui.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/14] Write sources
[3/14] Write swift-mcp-gui-entitlement.plist
[3/14] Write sources
[8/14] Compiling CSystem shims.c
[9/14] Write swift-version--6988338F2F200930.txt
[10/14] Copying opencv2.framework
[12/53] Compiling SystemPackage FilePathTempPosix.swift
[13/53] Compiling SystemPackage FilePathTempWindows.swift
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[15/56] Compiling SystemPackage FilePathComponentView.swift
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[26/56] Compiling SystemPackage FileDescriptor.swift
[27/56] Emitting module SystemPackage
[28/56] Compiling SystemPackage RawBuffer.swift
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[30/56] Compiling SystemPackage WindowsSyscallAdapters.swift
[31/56] Compiling SystemPackage Constants.swift
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[37/56] Compiling Logging MetadataProvider.swift
[38/56] Compiling SystemPackage MachPort.swift
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[41/56] Emitting module Logging
[42/56] Compiling Logging Locks.swift
[43/56] Compiling Logging LogHandler.swift
[44/56] Compiling Logging Logging.swift
[45/56] Compiling SystemPackage Util+StringArray.swift
[46/56] Compiling SystemPackage Util.swift
[47/56] Compiling SystemPackage UtilConsumers.swift
[48/56] Compiling EventSource AsyncEventsSequence.swift
[49/56] Emitting module EventSource
[50/56] Emitting module opencv2_dependencies
[51/56] Compiling opencv2_dependencies Stub.swift
[52/65] Compiling EventSource AsyncSequence+Events.swift
[53/65] Compiling EventSource EventSource.swift
[54/84] Compiling MCP Lifecycle.swift
[55/84] Compiling MCP Messages.swift
[56/84] Emitting module MCP
[57/86] Compiling MCP Prompts.swift
[58/86] Compiling MCP Resources.swift
[59/86] Compiling MCP StdioTransport.swift
[60/86] Compiling MCP UnitInterval.swift
[61/86] Compiling MCP Ping.swift
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[64/86] Compiling MCP Client.swift
[65/86] Compiling MCP Error.swift
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[67/86] Compiling MCP Transport.swift
[68/86] Compiling MCP HTTPClientTransport.swift
[69/86] Compiling MCP Sampling.swift
[70/86] Compiling MCP Data+Extensions.swift
[71/86] Compiling MCP InMemoryTransport.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/NetworkTransport.swift:581:33: error: sending 'sendContinuationResumed' risks causing data races [#SendingRisksDataRace]
579 |
580 | Task { @MainActor in
581 | if !sendContinuationResumed {
| |- error: sending 'sendContinuationResumed' risks causing data races [#SendingRisksDataRace]
| `- note: task-isolated 'sendContinuationResumed' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
582 | sendContinuationResumed = true
583 | if let error = error {
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/NetworkTransport.swift:812:29: error: sending 'receiveContinuationResumed' risks causing data races [#SendingRisksDataRace]
810 | content, _, isComplete, error in
811 | Task { @MainActor in
812 | if !receiveContinuationResumed {
| |- error: sending 'receiveContinuationResumed' risks causing data races [#SendingRisksDataRace]
| `- note: task-isolated 'receiveContinuationResumed' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
813 | receiveContinuationResumed = true
814 | if let error = error {
[#SendingRisksDataRace]: <https://docs.swift.org/compiler/documentation/diagnostics/sending-risks-data-race>
[72/86] Compiling MCP NetworkTransport.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/NetworkTransport.swift:581:33: error: sending 'sendContinuationResumed' risks causing data races [#SendingRisksDataRace]
579 |
580 | Task { @MainActor in
581 | if !sendContinuationResumed {
| |- error: sending 'sendContinuationResumed' risks causing data races [#SendingRisksDataRace]
| `- note: task-isolated 'sendContinuationResumed' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
582 | sendContinuationResumed = true
583 | if let error = error {
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-sdk/Sources/MCP/Base/Transports/NetworkTransport.swift:812:29: error: sending 'receiveContinuationResumed' risks causing data races [#SendingRisksDataRace]
810 | content, _, isComplete, error in
811 | Task { @MainActor in
812 | if !receiveContinuationResumed {
| |- error: sending 'receiveContinuationResumed' risks causing data races [#SendingRisksDataRace]
| `- note: task-isolated 'receiveContinuationResumed' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
813 | receiveContinuationResumed = true
814 | if let error = error {
[#SendingRisksDataRace]: <https://docs.swift.org/compiler/documentation/diagnostics/sending-risks-data-race>
[73/86] Compiling MCP Server.swift
[74/86] Compiling MCP Tools.swift
BUILD FAILURE 6.3 macosSpm