The Swift Package Index logo.Swift Package Index

Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build GoogleAnalyticsProvider with Swift 5.10 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.29.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/poissonballon/google-analytics-provider.git
Reference: master
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/poissonballon/google-analytics-provider
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at d89eab1 Update README.md
Cloned https://github.com/poissonballon/google-analytics-provider.git
Revision (git rev-parse @):
d89eab10bbdfbb2e5e4fde62e1ddc8d154f62d3e
SUCCESS checkout https://github.com/poissonballon/google-analytics-provider.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $workDir
https://github.com/poissonballon/google-analytics-provider.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64
Building for debugging...
[0/39] Write sources
[27/39] Compiling CNIOZlib empty.c
[28/39] Compiling CNIOOpenSSL empty.c
[29/39] Compiling CNIOLinux shim.c
[30/39] Write sources
[32/39] Write swift-version--423B1241ED78D482.txt
[33/46] Compiling libbcrypt bcrypt.c
[34/46] Compiling CNIODarwin shim.c
[35/48] Compiling libbcrypt blf.c
[36/48] Compiling CNIOHTTPParser c_nio_http_parser.c
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/CNIOSHA1/c_nio_sha1.c:101:1: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
sha1_step(ctxt)
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/CNIOSHA1/c_nio_sha1.c:186:1: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
c_nio_sha1_init(ctxt)
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/CNIOSHA1/c_nio_sha1.c:198:1: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
c_nio_sha1_pad(ctxt)
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/CNIOSHA1/c_nio_sha1.c:233:1: warning: a function definition without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]
c_nio_sha1_loop(ctxt, input, len)
^
4 warnings generated.
[37/48] Compiling CNIOSHA1 c_nio_sha1.c
[39/48] Compiling NIOPriorityQueue PriorityQueue.swift
[40/48] Emitting module COperatingSystem
[41/48] Compiling COperatingSystem libc.swift
[42/48] Emitting module NIOPriorityQueue
[43/48] Compiling NIOPriorityQueue Heap.swift
[43/48] Compiling c-atomics.c
[45/51] Compiling NIOConcurrencyHelpers lock.swift
[46/51] Emitting module NIOConcurrencyHelpers
[47/51] Compiling NIOConcurrencyHelpers atomics.swift
[48/51] Compiling Debugging SourceLocation.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[49/98] Emitting module NIO
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[50/104] Compiling NIO IO.swift
[51/104] Compiling NIO IOData.swift
[52/104] Compiling NIO IntegerTypes.swift
[53/104] Compiling NIO Interfaces.swift
[54/104] Compiling NIO Linux.swift
[55/104] Compiling NIO LinuxCPUSet.swift
[56/104] Compiling NIO RecvByteBufferAllocator.swift
[57/104] Compiling NIO Resolver.swift
[58/104] Compiling NIO Selectable.swift
[59/104] Compiling NIO Selector.swift
[60/104] Compiling NIO ServerSocket.swift
[61/104] Compiling NIO Socket.swift
[62/104] Compiling NIO AddressedEnvelope.swift
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[63/104] Compiling NIO BaseSocket.swift
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[64/104] Compiling NIO BaseSocketChannel.swift
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[65/104] Compiling NIO BlockingIOThreadPool.swift
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[66/104] Compiling NIO Bootstrap.swift
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[67/104] Compiling NIO ByteBuffer-aux.swift
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[68/104] Compiling NIO ByteBuffer-core.swift
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[69/104] Compiling NIO EventLoopFuture.swift
[70/104] Compiling NIO FileDescriptor.swift
[71/104] Compiling NIO FileHandle.swift
[72/104] Compiling NIO FileRegion.swift
[73/104] Compiling NIO GetaddrinfoResolver.swift
[74/104] Compiling NIO HappyEyeballs.swift
[75/104] Compiling NIO Heap.swift
[76/104] Compiling NIO ByteBuffer-int.swift
[77/104] Compiling NIO ByteBuffer-views.swift
[78/104] Compiling NIO Channel.swift
[79/104] Compiling NIO ChannelHandler.swift
[80/104] Compiling NIO ChannelHandlers.swift
[81/104] Compiling NIO ChannelInvoker.swift
[82/104] Compiling NIO ChannelOption.swift
[83/104] Compiling NIO MarkedCircularBuffer.swift
[84/104] Compiling NIO NIOAny.swift
[85/104] Compiling NIO NonBlockingFileIO.swift
[86/104] Compiling NIO PendingDatagramWritesManager.swift
[87/104] Compiling NIO PendingWritesManager.swift
[88/104] Compiling NIO PriorityQueue.swift
[89/104] Compiling Debugging Demangler.swift
[90/104] Compiling Debugging Debuggable.swift
[91/104] Emitting module Debugging
[92/104] Compiling NIO SocketAddresses.swift
[93/104] Compiling NIO SocketChannel.swift
[94/104] Compiling NIO System.swift
[95/104] Compiling NIO Thread.swift
[96/104] Compiling NIO TypeAssistedChannelHandler.swift
[97/104] Compiling NIO Utilities.swift
[98/104] Compiling NIO ChannelPipeline.swift
[99/104] Compiling NIO CircularBuffer.swift
[100/104] Compiling NIO Codec.swift
[101/104] Compiling NIO CompositeError.swift
[102/104] Compiling NIO DeadChannel.swift
[103/104] Compiling NIO Embedded.swift
[104/104] Compiling NIO EventLoop.swift
error: fatalError
Fetching https://github.com/vapor/crypto.git from cache
Fetching https://github.com/vapor/core.git from cache
Fetching https://github.com/apple/swift-nio-zlib-support.git from cache
Fetching https://github.com/apple/swift-nio.git from cache
Fetching https://github.com/vapor/database-kit.git from cache
Fetching https://github.com/vapor/validation.git from cache
Fetched https://github.com/vapor/validation.git from cache (0.26s)
Fetched https://github.com/vapor/core.git from cache (0.26s)
Fetching https://github.com/vapor/http.git from cache
Fetching https://github.com/vapor/url-encoded-form.git from cache
Fetched https://github.com/vapor/crypto.git from cache (0.26s)
Fetching https://github.com/vapor/vapor.git from cache
Fetched https://github.com/apple/swift-nio-zlib-support.git from cache (0.26s)
Fetching https://github.com/vapor/service.git from cache
Fetched https://github.com/vapor/database-kit.git from cache (0.26s)
Fetching https://github.com/vapor/multipart.git from cache
Fetched https://github.com/apple/swift-nio.git from cache (0.27s)
Fetching https://github.com/apple/swift-nio-ssl.git from cache
Fetched https://github.com/vapor/service.git from cache (0.17s)
Fetched https://github.com/vapor/multipart.git from cache (0.17s)
Fetching https://github.com/apple/swift-nio-ssl-support.git from cache
Fetching https://github.com/vapor/console.git from cache
Fetched https://github.com/vapor/http.git from cache (0.20s)
Fetching https://github.com/vapor/websocket.git from cache
Fetched https://github.com/apple/swift-nio-ssl.git from cache (0.20s)
Fetching https://github.com/vapor/template-kit.git from cache
Fetched https://github.com/vapor/url-encoded-form.git from cache (0.26s)
Fetching https://github.com/vapor/routing.git from cache
Fetched https://github.com/vapor/vapor.git from cache (0.26s)
Computing version for https://github.com/vapor/vapor.git
Computed https://github.com/vapor/vapor.git at 3.0.8 (0.03s)
Fetched https://github.com/vapor/console.git from cache (0.17s)
Fetched https://github.com/apple/swift-nio-ssl-support.git from cache (0.17s)
Fetched https://github.com/vapor/websocket.git from cache (0.17s)
Fetched https://github.com/vapor/template-kit.git from cache (0.17s)
Fetched https://github.com/vapor/routing.git from cache (0.16s)
Computing version for https://github.com/vapor/websocket.git
Computed https://github.com/vapor/websocket.git at 1.0.1 (0.02s)
Computing version for https://github.com/vapor/validation.git
Computed https://github.com/vapor/validation.git at 2.1.0 (0.02s)
Computing version for https://github.com/vapor/url-encoded-form.git
Computed https://github.com/vapor/url-encoded-form.git at 1.0.4 (0.02s)
Computing version for https://github.com/vapor/template-kit.git
Computed https://github.com/vapor/template-kit.git at 1.1.0 (0.02s)
Computing version for https://github.com/vapor/service.git
Computed https://github.com/vapor/service.git at 1.0.0 (0.03s)
Computing version for https://github.com/vapor/routing.git
Computed https://github.com/vapor/routing.git at 3.0.1 (0.02s)
Computing version for https://github.com/vapor/multipart.git
Computed https://github.com/vapor/multipart.git at 3.0.2 (0.02s)
Computing version for https://github.com/vapor/http.git
Computed https://github.com/vapor/http.git at 3.1.2 (0.02s)
Computing version for https://github.com/vapor/database-kit.git
Computed https://github.com/vapor/database-kit.git at 1.3.1 (0.02s)
Computing version for https://github.com/vapor/crypto.git
Computed https://github.com/vapor/crypto.git at 3.2.0 (0.02s)
Computing version for https://github.com/vapor/core.git
Computed https://github.com/vapor/core.git at 3.4.2 (0.02s)
Computing version for https://github.com/vapor/console.git
Computed https://github.com/vapor/console.git at 3.0.2 (0.02s)
Computing version for https://github.com/apple/swift-nio-ssl.git
Computed https://github.com/apple/swift-nio-ssl.git at 1.2.0 (0.02s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 1.9.4 (0.02s)
Computing version for https://github.com/apple/swift-nio-ssl-support.git
Computed https://github.com/apple/swift-nio-ssl-support.git at 1.0.0 (0.02s)
Computing version for https://github.com/apple/swift-nio-zlib-support.git
Computed https://github.com/apple/swift-nio-zlib-support.git at 1.0.0 (0.02s)
Creating working copy for https://github.com/apple/swift-nio-zlib-support.git
Working copy of https://github.com/apple/swift-nio-zlib-support.git resolved at 1.0.0
Creating working copy for https://github.com/vapor/core.git
Working copy of https://github.com/vapor/core.git resolved at 3.4.2
Creating working copy for https://github.com/apple/swift-nio-ssl.git
Working copy of https://github.com/apple/swift-nio-ssl.git resolved at 1.2.0
Creating working copy for https://github.com/vapor/console.git
Working copy of https://github.com/vapor/console.git resolved at 3.0.2
Creating working copy for https://github.com/vapor/vapor.git
Working copy of https://github.com/vapor/vapor.git resolved at 3.0.8
Creating working copy for https://github.com/vapor/multipart.git
Working copy of https://github.com/vapor/multipart.git resolved at 3.0.2
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 1.9.4
Creating working copy for https://github.com/vapor/database-kit.git
Working copy of https://github.com/vapor/database-kit.git resolved at 1.3.1
Creating working copy for https://github.com/vapor/service.git
Working copy of https://github.com/vapor/service.git resolved at 1.0.0
Creating working copy for https://github.com/vapor/template-kit.git
Working copy of https://github.com/vapor/template-kit.git resolved at 1.1.0
Creating working copy for https://github.com/apple/swift-nio-ssl-support.git
Working copy of https://github.com/apple/swift-nio-ssl-support.git resolved at 1.0.0
Creating working copy for https://github.com/vapor/url-encoded-form.git
Working copy of https://github.com/vapor/url-encoded-form.git resolved at 1.0.4
Creating working copy for https://github.com/vapor/websocket.git
Working copy of https://github.com/vapor/websocket.git resolved at 1.0.1
Creating working copy for https://github.com/vapor/crypto.git
Working copy of https://github.com/vapor/crypto.git resolved at 3.2.0
Creating working copy for https://github.com/vapor/validation.git
Working copy of https://github.com/vapor/validation.git resolved at 2.1.0
Creating working copy for https://github.com/vapor/http.git
Working copy of https://github.com/vapor/http.git resolved at 3.1.2
Creating working copy for https://github.com/vapor/routing.git
Working copy of https://github.com/vapor/routing.git resolved at 3.0.1
warning: 'swift-nio-ssl-support': ignoring declared target(s) 'swift-nio-ssl-support' in the system package
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: couldn't find pc file for zlib
warning: you may be able to install openssl using your system-packager:
    brew install libressl
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version--423B1241ED78D482.txt
[2/9] Compiling NIO BaseSocket.swift
[3/9] Compiling NIO AddressedEnvelope.swift
[4/9] Compiling NIO ByteBuffer-core.swift
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[5/18] Compiling NIO ByteBuffer-aux.swift
[6/18] Compiling NIO Bootstrap.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[7/24] Compiling NIO BlockingIOThreadPool.swift
[8/24] Compiling NIO BaseSocketChannel.swift
[9/24] Emitting module NIO
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: type 'StaticString' does not conform to protocol 'Collection'
extension StaticString: Collection {
^
/Users/builder/builds/UKfvDsi8u/2/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio/Sources/NIO/ByteBuffer-core.swift:732:1: error: unavailable subscript 'subscript(_:)' was used to satisfy a requirement of protocol 'Collection'
extension StaticString: Collection {
^
Swift.Collection:3:12: note: 'subscript(_:)' declared here
    public subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
           ^
Swift.Collection:14:5: note: requirement 'subscript(_:)' declared here
    subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get }
    ^
[10/31] Compiling NIO GetaddrinfoResolver.swift
[11/31] Compiling NIO Heap.swift
[12/31] Compiling NIO IO.swift
[13/33] Compiling NIO ByteBuffer-views.swift
[14/33] Compiling NIO CircularBuffer.swift
[15/33] Compiling NIO CompositeError.swift
[16/35] Compiling NIO Channel.swift
[17/35] Compiling NIO ChannelHandler.swift
[18/36] Compiling NIO EventLoop.swift
[19/36] Compiling NIO EventLoopFuture.swift
[20/36] Compiling NIO FileHandle.swift
[21/37] Compiling NIO Interfaces.swift
[22/37] Compiling NIO MarkedCircularBuffer.swift
[23/37] Compiling NIO PendingDatagramWritesManager.swift
[24/37] Compiling NIO PendingWritesManager.swift
[25/37] Compiling NIO PriorityQueue.swift
[26/37] Compiling NIO Selector.swift
[27/39] Compiling NIO ChannelHandlers.swift
[28/39] Compiling NIO ChannelInvoker.swift
[29/40] Compiling NIO Codec.swift
[30/41] Compiling NIO Thread.swift
[31/41] Compiling NIO Utilities.swift
[32/41] Compiling NIO ServerSocket.swift
[33/41] Compiling NIO Socket.swift
[34/41] Compiling NIO SocketAddresses.swift
[35/41] Compiling NIO SocketChannel.swift
[36/41] Compiling NIO System.swift
[37/44] Compiling NIO ChannelPipeline.swift
[38/45] Compiling NIO DeadChannel.swift
[39/45] Compiling NIO Embedded.swift
[40/47] Compiling NIO TypeAssistedChannelHandler.swift
[41/48] Compiling NIO NIOAny.swift
[42/48] Compiling NIO IOData.swift
[43/48] Compiling NIO FileRegion.swift
[44/48] Compiling NIO ByteBuffer-int.swift
[45/48] Compiling NIO HappyEyeballs.swift
[46/48] Compiling NIO NonBlockingFileIO.swift
[47/48] Compiling NIO RecvByteBufferAllocator.swift
[48/48] Compiling NIO IntegerTypes.swift
error: fatalError
warning: 'swift-nio-ssl-support': ignoring declared target(s) 'swift-nio-ssl-support' in the system package
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: couldn't find pc file for zlib
warning: you may be able to install openssl using your system-packager:
    brew install libressl
BUILD FAILURE 5.10 macosSpm