<unknown>:0: error: fatal error encountered while reading from module 'Foundation'; please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project and the crash backtrace.
Stack dump:
0.  Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk -enable-objc-interop -emit-objc-header -parse-as-library -g -O -D HAVE_GPL -D HAVE_CPLAYER -D HAVE_BUILD_DATE -D HAVE_OPTIMIZE -D HAVE_DEBUG_BUILD -D HAVE_LIBDL -D HAVE_CPLUGINS -D HAVE_ASM -D HAVE_VECTOR -D HAVE_LIBM -D HAVE_POSIX -D HAVE_POSIX_OR_MINGW -D HAVE_SWIFT -D HAVE_PTHREADS -D HAVE_STDATOMIC -D HAVE_ICONV -D HAVE_GLOB_POSIX -D HAVE_GLOB -D HAVE_OSX_THREAD_NAME -D HAVE_BSD_FSTATFS -D HAVE_LUA -D HAVE_LUAJIT -D HAVE_JAVASCRIPT -D HAVE_LIBASS -D HAVE_ZLIB -D HAVE_LIBBLURAY -D HAVE_UCHARDET -D HAVE_RUBBERBAND -D HAVE_ZIMG -D HAVE_LCMS2 -D HAVE_VAPOURSYNTH -D HAVE_FFMPEG -D HAVE_LIBAVDEVICE -D HAVE_FFMPEG_STRICT_ABI -D HAVE_COREAUDIO -D HAVE_COCOA -D HAVE_GL_COCOA -D HAVE_JPEG -D HAVE_GL -D HAVE_VIDEOTOOLBOX_HWACCEL -D HAVE_VIDEOTOOLBOX_GL -D HAVE_MACOS_TOUCHBAR -D HAVE_MACOS_10_11_FEATURES -D HAVE_MACOS_10_12_2_FEATURES -D HAVE_MACOS_10_14_FEATURES -D HAVE_MACOS_MEDIA_PLAYER -D HAVE_MACOS_COCOA_CB -module-name macOS_swift -emit-module-path /Users/selsta/dev/mpv/build/osdep/macOS_swift.swiftmodule -import-objc-header /Users/selsta/dev/mpv/osdep/macOS_swift_bridge.h -emit-objc-header-path /Users/selsta/dev/mpv/build/osdep/macOS_swift.h -o /Users/selsta/dev/mpv/build/osdep/macOS_swift.o /Users/selsta/dev/mpv/osdep/macos/log_helper.swift /Users/selsta/dev/mpv/osdep/macos/libmpv_helper.swift /Users/selsta/dev/mpv/osdep/macos/mpv_helper.swift /Users/selsta/dev/mpv/osdep/macos/swift_extensions.swift /Users/selsta/dev/mpv/osdep/macos/swift_compat.swift /Users/selsta/dev/mpv/osdep/macos/remote_command_center.swift /Users/selsta/dev/mpv/video/out/mac/common.swift /Users/selsta/dev/mpv/video/out/mac/view.swift /Users/selsta/dev/mpv/video/out/mac/window.swift /Users/selsta/dev/mpv/video/out/mac/title_bar.swift /Users/selsta/dev/mpv/video/out/cocoa_cb_common.swift /Users/selsta/dev/mpv/video/out/mac/gl_layer.swift -I. -I/Users/selsta/dev/mpv
1.  Apple Swift version 5.5 (swiftlang-1300.0.31.1 clang-1300.0.29.1)
2.  
3.  While evaluating request ExecuteSILPipelineRequest(Run pipelines { Mandatory Diagnostic Passes + Enabling Optimization Passes } on SIL for macOS_swift.macOS_swift)
4.  While running pass #&#8203;13001 SILModuleTransform "MandatorySILLinker".
5.  While deserializing SIL function "free"
6.  *** DESERIALIZATION FAILURE ***
module 'Foundation' with full misc version '5.5(5.5)/Apple Swift version 5.5 (swiftlang-1300.0.31.1 clang-1300.0.29.1)'
top-level value not found
Cross-reference to module 'Darwin'
... free
... with type (UnsafeMutableRawPointer) -> ()
Notes:
* 'free' in module 'SwiftShims' was filtered out.
* 'free' in module 'macOS_swift' was filtered out.
* 'free' in module 'IOKit' was filtered out.
* 'free' in module 'CoreFoundation' was filtered out.
* 'free' in module 'Darwin' was filtered out.
* 'free' in module 'SwiftOverlayShims' was filtered out.
* 'free' in module 'Dispatch' was filtered out.
* 'free' in module 'os_workgroup' was filtered out.
* 'free' in module 'os_object' was filtered out.
* 'free' in module 'ObjectiveC' was filtered out.
* 'free' in module 'MachO' was filtered out.
* 'free' in module 'libkern' was filtered out.
* 'free' in module 'Cocoa' was filtered out.
* 'free' in module 'CoreData' was filtered out.
* 'free' in module 'Foundation' was filtered out.
* 'free' in module 'CoreGraphics' was filtered out.
* 'free' in module 'ApplicationServices' was filtered out.
* 'free' in module 'ImageIO' was filtered out.
* 'free' in module 'CoreText' was filtered out.
* 'free' in module 'ColorSync' was filtered out.
* 'free' in module 'CoreServices' was filtered out.
* 'free' in module 'Security' was filtered out.
* 'free' in module 'XPC' was filtered out.
* 'free' in module 'launch' was filtered out.
* 'free' in module 'CFNetwork' was filtered out.
* 'free' in module 'DiskArbitration' was filtered out.
* 'free' in module 'CloudKit' was filtered out.
* 'free' in module 'CoreLocation' was filtered out.
* 'free' in module 'AppKit' was filtered out.
* 'free' in module 'QuartzCore' was filtered out.
* 'free' in module 'CoreVideo' was filtered out.
* 'free' in module 'Metal' was filtered out.
* 'free' in module 'IOSurface' was filtered out.
* 'free' in module 'OpenGL' was filtered out.
* 'free' in module 'CoreImage' was filtered out.
* 'free' in module 'MediaPlayer' was filtered out.
* 'free' in module 'AVFoundation' was filtered out.
* 'free' in module 'AVFAudio' was filtered out.
* 'free' in module 'AudioToolbox' was filtered out.
* 'free' in module 'CoreAudio' was filtered out.
* 'free' in module 'CoreAudioTypes' was filtered out.
* 'free' in module 'CoreMIDI' was filtered out.
* 'free' in module 'CoreMedia' was filtered out.
* 'free' in module 'simd' was filtered out.
* 'free' in module 'MediaToolbox' was filtered out.
* 'free' in module 'UniformTypeIdentifiers' was filtered out.


Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  swift                    0x00000001134da6f7 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 39
1  swift                    0x00000001134d9688 llvm::sys::RunSignalHandlers() + 248
2  swift                    0x00000001134dad06 SignalHandler(int) + 278
3  libsystem_platform.dylib 0x00007fff204a7d7d _sigtramp + 29
4  libsystem_platform.dylib 0x000000011c117298 _sigtramp + 18446603344740283704
5  libsystem_c.dylib        0x00007fff203b7406 abort + 125
6  swift                    0x000000010ec10328 swift::ModuleFileSharedCore::fatal(llvm::Error) const + 632
7  swift                    0x000000010eb94aa6 swift::ModuleFile::fatal(llvm::Error) const + 566
8  swift                    0x000000010ebd311d swift::SILDeserializer::readSILFunctionChecked(llvm::PointerEmbeddedInt<unsigned int, 31>, swift::SILFunction*, llvm::StringRef, bool, bool) + 9949
9  swift                    0x000000010ebf72dd swift::SILDeserializer::lookupSILFunction(swift::SILFunction*, bool) + 877
10 swift                    0x000000010e79ac6d swift::SILLinkerVisitor::maybeAddFunctionToWorklist(swift::SILFunction*) + 237
11 swift                    0x000000010e79ae6b swift::SILLinkerVisitor::processFunction(swift::SILFunction*) + 203
12 swift                    0x000000010f1453c6 (anonymous namespace)::SILLinker::run() + 278
13 swift                    0x000000010f01434b swift::SILPassManager::executePassPipelinePlan(swift::SILPassPipelinePlan const&) + 2747
14 swift                    0x000000010f02e20c swift::SimpleRequest<swift::ExecuteSILPipelineRequest, std::__1::tuple<> (swift::SILPipelineExecutionDescriptor), (swift::RequestFlags)1>::evaluateRequest(swift::ExecuteSILPipelineRequest const&, swift::Evaluator&) + 60
15 swift                    0x000000010f01c005 llvm::Expected<swift::ExecuteSILPipelineRequest::OutputType> swift::Evaluator::getResultUncached<swift::ExecuteSILPipelineRequest>(swift::ExecuteSILPipelineRequest const&) + 469
16 swift                    0x000000010f01e3bb swift::runSILDiagnosticPasses(swift::SILModule&) + 187
17 swift                    0x000000010e7676de swift::CompilerInstance::performSILProcessing(swift::SILModule*) + 62
18 swift                    0x000000010e612d59 performCompileStepsPostSILGen(swift::CompilerInstance&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> >, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::PrimarySpecificPaths const&, int&, swift::FrontendObserver*) + 1161
19 swift                    0x000000010e6050ce swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 14398
20 swift                    0x000000010e546a48 main + 1032
21 libdyld.dylib            0x00007fff2047df3d start + 1

brew install autoconf automake pkg-config libtool python freetype fribidi little-cms2 luajit libass ffmpeg
git clone --recursive https://github.com/mpv-player/mpv
cd mpv
./bootstrap.py
./waf configue
./waf