Swift Package Index

Build Information

Failed to build MCP, reference v2.1.2 (ff6b02), with Swift 6.2 for macOS (Xcode) using Xcode 26.3 on 23 Oct 2026 19:30:47 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: 5.1.3
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/tannerdsilva/swift-mcp.git
Reference: v2.1.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/tannerdsilva/swift-mcp
 * tag               v2.1.2     -> FETCH_HEAD
HEAD is now at ff6b02e fix(client): the shutdown ladder follows the child's placement
Cloned https://github.com/tannerdsilva/swift-mcp.git
Revision (git rev-parse @):
ff6b02e2f44071a72352e7664033f2b2183fef8f
SUCCESS checkout https://github.com/tannerdsilva/swift-mcp.git at v2.1.2
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Build
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Selected platform:         macosXcodebuild
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)
2026-10-23 15:30:46.099 xcodebuild[540:3119] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-23-10_15-30-0046.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)
2026-10-23 15:30:46.974 xcodebuild[602:3645] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-23-10_15-30-0046.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 macosXcodebuild