Build Information
Failed to build MCP, reference master (33bd4c), with Swift 6.2 for iOS using Xcode 26.3 on 10 Oct 2026 18:26:26 UTC.
Build Command
No build command. This typically means the build failed at an early stage where we determine the build command.Build Log
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RunAll
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Builder version: 5.1.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/tannerdsilva/swift-mcp.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/tannerdsilva/swift-mcp
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at 33bd4c0 fix(deps): point swift-syntax at its canonical swiftlang home
Cloned https://github.com/tannerdsilva/swift-mcp.git
Revision (git rev-parse @):
33bd4c07fafdbd1b8f98e5d248a12a8309111a1e
SUCCESS checkout https://github.com/tannerdsilva/swift-mcp.git at master
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Build
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Selected platform: iOS
Swift version: 6.2
Building package at path: $PWD
https://github.com/tannerdsilva/swift-mcp.git
Command line invocation:
/Applications/Xcode-26.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.2.4
Resolved source packages:
spi-builder-workspace: (null)
2026-10-10 14:26:25.977 xcodebuild[532:3056] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-10-10_14-26-0025.xcresult
xcodebuild: error: Could not resolve package dependencies:
package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.2.4
Command line invocation:
/Applications/Xcode-26.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.2.4
Resolved source packages:
spi-builder-workspace: (null)
2026-10-10 14:26:26.835 xcodebuild[596:3595] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-10-10_14-26-0026.xcresult
xcodebuild: error: Could not resolve package dependencies:
package 'spi-builder-workspace' is using Swift tools version 6.3.0 but the installed version is 6.2.4
BUILD FAILURE 6.2 iOS