Swift Package IndexBuild Information
Failed to build mcp-swift-sdk, reference main (6112a3), with Swift 6.0 for macOS (SPM) on 5 Mar 2026 08:05:17 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64Build Log
========================================
RunAll
========================================
Builder version: 4.68.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/1amageek/mcp-swift-sdk.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/1amageek/mcp-swift-sdk
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 6112a39 V0.11.x (#199)
Cloned https://github.com/1amageek/mcp-swift-sdk.git
Revision (git rev-parse @):
6112a3995a992d159ad0e82c2d62a008ce932666
SUCCESS checkout https://github.com/1amageek/mcp-swift-sdk.git at main
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.0
Building package at path: $PWD
https://github.com/1amageek/mcp-swift-sdk.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64
Building for debugging...
[0/6] Write sources
[4/6] Compiling CSystem shims.c
[5/6] Write swift-version-5BDAB9E9C0126B9D.txt
[7/44] Compiling SystemPackage FileHelpers.swift
[8/44] Compiling SystemPackage FileOperations.swift
[9/44] Compiling SystemPackage FilePath.swift
[10/47] Compiling SystemPackage FilePathComponentView.swift
[11/47] Compiling SystemPackage FilePathComponents.swift
[12/47] Compiling SystemPackage FilePathParsing.swift
[13/47] Emitting module SystemPackage
[14/47] Compiling SystemPackage Errno.swift
[15/47] Compiling SystemPackage ErrnoWindows.swift
[16/47] Compiling SystemPackage FileDescriptor.swift
[17/47] Compiling SystemPackage Util+StringArray.swift
[18/47] Compiling SystemPackage Util.swift
[19/47] Compiling SystemPackage UtilConsumers.swift
[20/47] Compiling SystemPackage FilePathTempPosix.swift
[21/47] Compiling SystemPackage FilePathTempWindows.swift
[22/47] Compiling SystemPackage FilePathWindows.swift
[23/47] Compiling SystemPackage FilePathString.swift
[24/47] Compiling SystemPackage FilePathSyntax.swift
[25/47] Compiling SystemPackage FilePathTemp.swift
[26/47] Compiling SystemPackage RawBuffer.swift
[27/47] Compiling SystemPackage Syscalls.swift
[28/47] Compiling SystemPackage WindowsSyscallAdapters.swift
[29/47] Compiling SystemPackage FilePermissions.swift
[30/47] Compiling SystemPackage Backcompat.swift
[31/47] Compiling SystemPackage CInterop.swift
[32/47] Compiling SystemPackage MachPort.swift
[33/47] Compiling SystemPackage PlatformString.swift
[34/47] Compiling SystemPackage SystemString.swift
[35/47] Compiling SystemPackage Constants.swift
[36/47] Compiling SystemPackage Exports.swift
[37/47] Compiling SystemPackage Mocking.swift
[38/47] Compiling Logging Logging.swift
[39/47] Compiling Logging Locks.swift
[40/47] Emitting module Logging
[41/47] Compiling Logging MetadataProvider.swift
[42/47] Compiling Logging LogHandler.swift
[43/47] Compiling EventSource EventSource+AsyncHTTPClient.swift
[44/47] Compiling EventSource AsyncSequence+Events.swift
[45/47] Compiling EventSource AsyncEventsSequence.swift
[46/47] Emitting module EventSource
[47/47] Compiling EventSource EventSource.swift
[48/77] Compiling MCP Progress.swift
[49/77] Compiling MCP RequestContext.swift
[50/77] Compiling MCP Value.swift
[51/80] Compiling MCP UnitInterval.swift
[52/80] Compiling MCP Cancellation.swift
[53/80] Compiling MCP Ping.swift
[54/80] Compiling MCP HTTPServerTypes.swift
[55/80] Compiling MCP StatefulHTTPServerTransport.swift
[56/80] Compiling MCP StatelessHTTPServerTransport.swift
[57/80] Compiling MCP Messages.swift
/Users/admin/builder/spi-builder-workspace/Sources/MCP/Base/Transports/HTTPClientTransport.swift:453:31: error: missing argument for parameter 'of' in call
451 | let timeout = self.sseInitializationTimeout
452 | do {
453 | try await withThrowingTaskGroup { group in
| `- error: missing argument for parameter 'of' in call
454 | group.addTask {
455 | try await Task.sleep(for: .seconds(timeout))
_Concurrency.withThrowingTaskGroup:3:24: note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
1 | @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
2 | @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0)
3 | @inlinable public func withThrowingTaskGroup<ChildTaskResult, GroupResult>(of childTaskResultType: ChildTaskResult.Type, returning returnType: GroupResult.Type = GroupResult.self, isolation: isolated (any Actor)? = #isolation, body: (inout ThrowingTaskGroup<ChildTaskResult, any Error>) async throws -> GroupResult) async rethrows -> GroupResult where ChildTaskResult : Sendable
| `- note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
[58/80] Compiling MCP Transport.swift
/Users/admin/builder/spi-builder-workspace/Sources/MCP/Base/Transports/HTTPClientTransport.swift:453:31: error: missing argument for parameter 'of' in call
451 | let timeout = self.sseInitializationTimeout
452 | do {
453 | try await withThrowingTaskGroup { group in
| `- error: missing argument for parameter 'of' in call
454 | group.addTask {
455 | try await Task.sleep(for: .seconds(timeout))
_Concurrency.withThrowingTaskGroup:3:24: note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
1 | @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
2 | @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0)
3 | @inlinable public func withThrowingTaskGroup<ChildTaskResult, GroupResult>(of childTaskResultType: ChildTaskResult.Type, returning returnType: GroupResult.Type = GroupResult.self, isolation: isolated (any Actor)? = #isolation, body: (inout ThrowingTaskGroup<ChildTaskResult, any Error>) async throws -> GroupResult) async rethrows -> GroupResult where ChildTaskResult : Sendable
| `- note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
[59/80] Compiling MCP HTTPClientTransport.swift
/Users/admin/builder/spi-builder-workspace/Sources/MCP/Base/Transports/HTTPClientTransport.swift:453:31: error: missing argument for parameter 'of' in call
451 | let timeout = self.sseInitializationTimeout
452 | do {
453 | try await withThrowingTaskGroup { group in
| `- error: missing argument for parameter 'of' in call
454 | group.addTask {
455 | try await Task.sleep(for: .seconds(timeout))
_Concurrency.withThrowingTaskGroup:3:24: note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
1 | @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
2 | @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0)
3 | @inlinable public func withThrowingTaskGroup<ChildTaskResult, GroupResult>(of childTaskResultType: ChildTaskResult.Type, returning returnType: GroupResult.Type = GroupResult.self, isolation: isolated (any Actor)? = #isolation, body: (inout ThrowingTaskGroup<ChildTaskResult, any Error>) async throws -> GroupResult) async rethrows -> GroupResult where ChildTaskResult : Sendable
| `- note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
[60/80] Compiling MCP HTTPRequestValidation.swift
/Users/admin/builder/spi-builder-workspace/Sources/MCP/Base/Transports/HTTPClientTransport.swift:453:31: error: missing argument for parameter 'of' in call
451 | let timeout = self.sseInitializationTimeout
452 | do {
453 | try await withThrowingTaskGroup { group in
| `- error: missing argument for parameter 'of' in call
454 | group.addTask {
455 | try await Task.sleep(for: .seconds(timeout))
_Concurrency.withThrowingTaskGroup:3:24: note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
1 | @available(macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0, *)
2 | @backDeployed(before: macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0)
3 | @inlinable public func withThrowingTaskGroup<ChildTaskResult, GroupResult>(of childTaskResultType: ChildTaskResult.Type, returning returnType: GroupResult.Type = GroupResult.self, isolation: isolated (any Actor)? = #isolation, body: (inout ThrowingTaskGroup<ChildTaskResult, any Error>) async throws -> GroupResult) async rethrows -> GroupResult where ChildTaskResult : Sendable
| `- note: 'withThrowingTaskGroup(of:returning:isolation:body:)' declared here
[61/80] Emitting module MCP
[62/80] Compiling MCP Completion.swift
[63/80] Compiling MCP Logging.swift
[64/80] Compiling MCP Prompts.swift
[65/80] Compiling MCP Versioning.swift
[66/80] Compiling MCP Client.swift
[67/80] Compiling MCP Elicitation.swift
[68/80] Compiling MCP InMemoryTransport.swift
[69/80] Compiling MCP NetworkTransport.swift
[70/80] Compiling MCP StdioTransport.swift
[71/80] Compiling MCP Error.swift
[72/80] Compiling MCP ID.swift
[73/80] Compiling MCP Icon.swift
[74/80] Compiling MCP Lifecycle.swift
[75/80] Compiling MCP Roots.swift
[76/80] Compiling MCP Sampling.swift
[77/80] Compiling MCP Data+Extensions.swift
[78/80] Compiling MCP Resources.swift
[79/80] Compiling MCP Server.swift
[80/80] Compiling MCP Tools.swift
Fetching https://github.com/mattt/eventsource.git
Fetching https://github.com/apple/swift-log.git
Fetching https://github.com/apple/swift-system.git
[1/271] Fetching eventsource
[129/6425] Fetching eventsource, swift-log
[457/12026] Fetching eventsource, swift-log, swift-system
Fetched https://github.com/apple/swift-system.git from cache (1.22s)
Fetched https://github.com/mattt/eventsource.git from cache (1.22s)
Fetched https://github.com/apple/swift-log.git from cache (1.22s)
Computing version for https://github.com/mattt/eventsource.git
Computed https://github.com/mattt/eventsource.git at 1.4.1 (0.43s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.10.1 (0.43s)
Computing version for https://github.com/apple/swift-system.git
Computed https://github.com/apple/swift-system.git at 1.6.4 (0.47s)
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-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.10.1
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
BUILD FAILURE 6.0 macosSpm