Crash on non-existent file

[rjmansfield]

$ ~/swift-6.0.1-RELEASE-ubuntu22.04/usr/bin/swiftc nosuchfile

💣 Program crashed: Signal 11: Backtracing...

Debugging will be degraded due to missing types. Rebuilding the project will regenerate the needed module files.
* thread #1, name = 'swiftc', stop reason = signal SIGSEGV: address not mapped to object (fault address: 0x0)
  * frame #0: 0x0000000000000000
    frame #1: 0x00005555559760a4 swiftc`(anonymous namespace)::CAPIBuildEngineDelegate::cycleDetected(this=<unavailable>, items=<unavailable>) at Core-C-API.cpp:90:5
    frame #2: 0x00005555559c4efd swiftc`(anonymous namespace)::BuildEngineImpl::executeTasks(llbuild::core::KeyType const&) [inlined] (anonymous namespace)::BuildEngineImpl::resolveCycle(this=0x0000555555d3bbb0, buildKey=0x00007fffffffcca0) at BuildEngine.cpp:1095:14
    frame #3: 0x00005555559c3d1e swiftc`(anonymous namespace)::BuildEngineImpl::executeTasks(this=0x0000555555d3bbb0, buildKey=0x00007fffffffcca0) at BuildEngine.cpp:1061:15
    frame #4: 0x00005555559c033c swiftc`llbuild::core::BuildEngine::build(llbuild::core::KeyType const&) [inlined] (anonymous namespace)::BuildEngineImpl::build(this=0x0000555555d3bbb0, key=<unavailable>) at BuildEngine.cpp:1598:20
    frame #5: 0x00005555559c01a6 swiftc`llbuild::core::BuildEngine::build(this=<unavailable>, key=0x00007fffffffcca0) at BuildEngine.cpp:1934:47
    frame #6: 0x000055555597587d swiftc`llb_buildengine_build(engine_p=<unavailable>, key=<unavailable>, result_out=0x00007fffffffcd10) at Core-C-API.cpp:216:26
    frame #7: 0x00005555559ed04d swiftc`BuildEngine.build(key:) [inlined] closure #1 ($0=<unavailable>, resultPtr=<unavailable>, $0=0x2e, resultPtr=0x0000000000000000) -> () in closure #1 (Swift.UnsafeMutablePointer<__C.llb_data_t_>) -> () in llbuildSwift.BuildEngine.build(key: llbuildSwift.Key) -> llbuildSwift.Value at CoreBindings.swift:407:39 [opt]
    frame #8: 0x00005555559ed03c swiftc`BuildEngine.build(key:) [inlined] generic specialization <()> of reabstraction thunk helper <τ_0_0> from @callee_guaranteed (@unowned Swift.UnsafePointer<__C.llb_data_t_>) -> (@out τ_0_0) to @escaping @callee_guaranteed (@unowned Swift.UnsafePointer<__C.llb_data_t_>) -> (@out τ_0_0, @error @out Swift.Never) at <compiler-generated>:0 [opt]
    frame #9: 0x00005555559ed03c swiftc`BuildEngine.build(key:) [inlined] generic not re-abstracted specialization <()> of reabstraction thunk helper <τ_0_0> from @callee_guaranteed (@unowned Swift.UnsafePointer<__C.llb_data_t_>) -> (@out τ_0_0) to @escaping @callee_guaranteed (@unowned Swift.UnsafePointer<__C.llb_data_t_>) -> (@out τ_0_0, @error @out Swift.Never) at <compiler-generated>:0 [opt]
    frame #10: 0x00005555559ed03c swiftc`BuildEngine.build(key:) [inlined] generic specialization <__C.llb_data_t_, Swift.Never, ()> of Swift.withUnsafePointer<τ_0_0, τ_0_1, τ_0_2 where τ_0_1: Swift.Error, τ_0_0: ~Swift.Copyable, τ_0_2: ~Swift.Copyable>(to: inout τ_0_0, _: (Swift.UnsafePointer<τ_0_0>) throws(τ_0_1) -> τ_0_2) throws(τ_0_1) -> τ_0_2 at <compiler-generated>:0 [opt]
    frame #11: 0x00005555559ed03c swiftc`BuildEngine.build(key:) at CoreBindings.swift:63:20 [opt]
    frame #12: 0x00005555559ed034 swiftc`BuildEngine.build(key:) [inlined] generic specialization <Swift.UInt8, ()> of Swift.Array.withUnsafeBufferPointer<τ_0_0>((Swift.UnsafeBufferPointer<τ_0_0>) throws -> τ_1_0) throws -> τ_1_0 at <compiler-generated>:0 [opt]
    frame #13: 0x00005555559ed02c swiftc`BuildEngine.build(key:) [inlined] generic specialization <()> of llbuildSwift.Key.withInternalDataPtr<τ_0_0>() -> τ_0_0) -> τ_0_0 at CoreBindings.swift:61:21 [opt]
    frame #14: 0x00005555559ed02c swiftc`BuildEngine.build(key:) [inlined] closure #1 (resultPtr=<unavailable>, key=<unavailable>, resultPtr=0x0000000000000000, key=<unavailable>) -> () in llbuildSwift.BuildEngine.build(key: llbuildSwift.Key) -> llbuildSwift.Value at CoreBindings.swift:407:17 [opt]
    frame #15: 0x00005555559ed02c swiftc`BuildEngine.build(key:) [inlined] reabstraction thunk helper from @callee_guaranteed (@unowned Swift.UnsafeMutablePointer<__C.llb_data_t_>) -> () to @escaping @callee_guaranteed (@unowned Swift.UnsafeMutablePointer<__C.llb_data_t_>) -> (@out (), @error @out Swift.Never) at <compiler-generated>:0 [opt]
    frame #16: 0x00005555559ed02c swiftc`BuildEngine.build(key:) [inlined] generic specialization <__C.llb_data_t_, Swift.Never, ()> of Swift.withUnsafeMutablePointer<τ_0_0, τ_0_1, τ_0_2 where τ_0_1: Swift.Error, τ_0_0: ~Swift.Copyable, τ_0_2: ~Swift.Copyable>(to: inout τ_0_0, _: (Swift.UnsafeMutablePointer<τ_0_0>) throws(τ_0_1) -> τ_0_2) throws(τ_0_1) -> τ_0_2 at <compiler-generated>:0 [opt]
    frame #17: 0x00005555559ed02c swiftc`BuildEngine.build(key:) at CoreBindings.swift:105:9 [opt]
    frame #18: 0x00005555559ed025 swiftc`BuildEngine.build(key=<unavailable>) at CoreBindings.swift:406:22 [opt]
    frame #19: 0x00005555557f25fc swiftc`specialized LLBuildEngine.build<A>(key=SwiftDriverExecution.ExecuteAllJobsRule.RuleKey @ scalar) at llbuild.swift:97:24 [opt]
    frame #20: 0x00005555557fa242 swiftc`MultiJobExecutor.execute(env=<unavailable>, fileSystem=TSCBasic.LocalFileSystem @ 0x0000555555cb3800) at MultiJobExecutor.swift:305:29 [opt]
    frame #21: 0x00005555557fb7df swiftc`SwiftDriverExecutor.execute(workload=<unavailable>, delegate=<unavailable>, numParallelJobs=<unavailable>, forceResponseFiles=<unavailable>, recordedInputModificationDates=0 key/value pairs) at SwiftDriverExecutor.swift:88:25 [opt]
    frame #22: 0x00005555557fa7b0 swiftc`protocol witness for DriverExecutor.execute(workload:delegate:numParallelJobs:forceResponseFiles:recordedInputModificationDates:) in conformance SwiftDriverExecutor at <compiler-generated>:0 [opt]
    frame #23: 0x000055555568f406 swiftc`Driver.performTheBuild(allJobs=2 values, jobExecutionDelegate=0x0000555555d3ad30, forceResponseFiles=false) at Driver.swift:1686:18 [opt]
    frame #24: 0x00005555556c0711 swiftc`Driver.run(jobs=2 values) at Driver.swift:1622:13 [opt]
    frame #25: 0x0000555555a76174 swiftc`swift_driver_main at main.swift:139:14 [opt]
    frame #26: 0x00007ffff61a3d90 libc.so.6`__libc_start_call_main(main=(swiftc`swift_driver_main at main.swift), argc=2, argv=0x00007fffffffe3b8) at libc_start_call_main.h:58:16
    frame #27: 0x00007ffff61a3e40 libc.so.6`__libc_start_main_impl(main=(swiftc`swift_driver_main at main.swift), argc=2, argv=0x00007fffffffe3b8, init=<unavailable>, fini=<unavailable>, rtld_fini=<unavailable>, stack_end=0x00007fffffffe3a8) at libc-start.c:392:3
    frame #28: 0x00005555555e4a65 swiftc`_start + 37

~/swift-6.0.1-RELEASE-ubuntu22.04/usr/bin/swiftc --version
Swift version 6.0.1 (swift-6.0.1-RELEASE)
Target: x86_64-unknown-linux-gnu