Spurious SIGSEGV when building `regex-automata` (dep of stage 0 tool coverage-dump) on x86_64-apple-darwin in CI

[jieyouxu]

See #139242 (comment).

2025-04-02T09:19:22.3591380Z [RUSTC-TIMING] regex_automata test:false 2.828
2025-04-02T09:19:22.3809420Z rustc exited with signal: 11 (SIGSEGV)
2025-04-02T09:19:22.3848270Z �[1m�[31merror�[0m�[1m:�[0m could not compile `regex-automata` (lib)

CI log

``` 2025-04-02T09:19:16.1992320Z ##[group]Building stage0 tool coverage-dump (x86_64-apple-darwin) 2025-04-02T09:19:16.3934540Z �[1m�[32m Compiling�[0m typenum v1.17.0 2025-04-02T09:19:16.3936150Z �[1m�[32m Compiling�[0m version_check v0.9.5 2025-04-02T09:19:16.3941180Z �[1m�[32m Compiling�[0m memchr v2.7.4 2025-04-02T09:19:16.3941790Z [RUSTC-TIMING] regex_syntax test:false 12.233 2025-04-02T09:19:16.3942410Z �[1m�[32m Compiling�[0m anyhow v1.0.95 2025-04-02T09:19:16.6887000Z [RUSTC-TIMING] build_script_build test:false 0.280 2025-04-02T09:19:16.7186180Z [RUSTC-TIMING] version_check test:false 0.317 2025-04-02T09:19:16.7188860Z �[1m�[32m Compiling�[0m cfg-if v1.0.0 2025-04-02T09:19:16.7227450Z �[1m�[32m Compiling�[0m generic-array v0.14.7 2025-04-02T09:19:16.7649290Z [RUSTC-TIMING] cfg_if test:false 0.038 2025-04-02T09:19:16.7658470Z �[1m�[32m Compiling�[0m adler v1.0.2 2025-04-02T09:19:16.9103660Z [RUSTC-TIMING] build_script_build test:false 0.172 2025-04-02T09:19:16.9247930Z [RUSTC-TIMING] adler test:false 0.152 2025-04-02T09:19:16.9256710Z �[1m�[32m Compiling�[0m miniz_oxide v0.7.4 2025-04-02T09:19:16.9300400Z [RUSTC-TIMING] build_script_main test:false 0.529 2025-04-02T09:19:17.7486860Z [RUSTC-TIMING] typenum test:false 0.684 2025-04-02T09:19:17.7647460Z [RUSTC-TIMING] anyhow test:false 0.817 2025-04-02T09:19:17.7656380Z �[1m�[32m Compiling�[0m aho-corasick v1.1.3 2025-04-02T09:19:18.0985450Z [RUSTC-TIMING] memchr test:false 1.690 2025-04-02T09:19:18.0993530Z �[1m�[32m Compiling�[0m rustc-demangle v0.1.24 2025-04-02T09:19:18.8139560Z [RUSTC-TIMING] generic_array test:false 1.060 2025-04-02T09:19:18.8162330Z �[1m�[32m Compiling�[0m crypto-common v0.1.6 2025-04-02T09:19:18.9889830Z [RUSTC-TIMING] crypto_common test:false 0.168 2025-04-02T09:19:18.9921890Z �[1m�[32m Compiling�[0m block-buffer v0.10.4 2025-04-02T09:19:19.0557610Z [RUSTC-TIMING] miniz_oxide test:false 2.122 2025-04-02T09:19:19.0566220Z �[1m�[32m Compiling�[0m leb128 v0.2.5 2025-04-02T09:19:19.1180290Z [RUSTC-TIMING] block_buffer test:false 0.119 2025-04-02T09:19:19.1189400Z �[1m�[32m Compiling�[0m digest v0.10.7 2025-04-02T09:19:19.1515840Z [RUSTC-TIMING] leb128 test:false 0.088 2025-04-02T09:19:19.3243710Z �[1m�[32m Compiling�[0m md-5 v0.10.6 2025-04-02T09:19:19.3284660Z [RUSTC-TIMING] digest test:false 0.205 2025-04-02T09:19:19.3689810Z [RUSTC-TIMING] rustc_demangle test:false 1.266 2025-04-02T09:19:19.4422310Z [RUSTC-TIMING] md5 test:false 0.113 2025-04-02T09:19:19.5185410Z �[1m�[32m Compiling�[0m regex-automata v0.4.9 2025-04-02T09:19:22.3591380Z [RUSTC-TIMING] regex_automata test:false 2.828 2025-04-02T09:19:22.3809420Z rustc exited with signal: 11 (SIGSEGV) 2025-04-02T09:19:22.3848270Z �[1m�[31merror�[0m�[1m:�[0m could not compile `regex-automata` (lib) 2025-04-02T09:19:22.3850090Z 2025-04-02T09:19:22.3856560Z Caused by: 2025-04-02T09:19:22.3878850Z process didn't exit successfully: `/Users/runner/work/rust/rust/build/bootstrap/debug/rustc /Users/runner/work/rust/rust/build/bootstrap/debug/rustc --crate-name regex_automata --edition=2021 /Users/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/regex-automata-0.4.9/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no --cfg 'feature="alloc"' --cfg 'feature="dfa-onepass"' --cfg 'feature="hybrid"' --cfg 'feature="meta"' --cfg 'feature="nfa-backtrack"' --cfg 'feature="nfa-pikevm"' --cfg 'feature="nfa-thompson"' --cfg 'feature="perf-inline"' --cfg 'feature="perf-literal"' --cfg 'feature="perf-literal-multisubstring"' --cfg 'feature="perf-literal-substring"' --cfg 'feature="std"' --cfg 'feature="syntax"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' --cfg 'feature="unicode-word-boundary"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "default", "dfa", "dfa-build", "dfa-onepass", "dfa-search", "hybrid", "internal-instrument", "internal-instrument-pikevm", "logging", "meta", "nfa", "nfa-backtrack", "nfa-pikevm", "nfa-thompson", "perf", "perf-inline", "perf-literal", "perf-literal-multisubstring", "perf-literal-substring", "std", "syntax", "unicode", "unicode-age", "unicode-bool", "unicode-case", "unicode-gencat", "unicode-perl", "unicode-script", "unicode-segment", "unicode-word-boundary"))' -C metadata=bab88db0d56a8cac -C extra-filename=-159966159ad12c20 --out-dir /Users/runner/work/rust/rust/build/x86_64-apple-darwin/stage0-bootstrap-tools/x86_64-apple-darwin/release/deps --target x86_64-apple-darwin -L dependency=/Users/runner/work/rust/rust/build/x86_64-apple-darwin/stage0-bootstrap-tools/x86_64-apple-darwin/release/deps -L dependency=/Users/runner/work/rust/rust/build/x86_64-apple-darwin/stage0-bootstrap-tools/release/deps --extern aho_corasick=/Users/runner/work/rust/rust/build/x86_64-apple-darwin/stage0-bootstrap-tools/x86_64-apple-darwin/release/deps/libaho_corasick-2b9b98d5bfd9bcef.rmeta --extern memchr=/Users/runner/work/rust/rust/build/x86_64-apple-darwin/stage0-bootstrap-tools/x86_64-apple-darwin/release/deps/libmemchr-0a4f412715e182b5.rmeta --extern regex_syntax=/Users/runner/work/rust/rust/build/x86_64-apple-darwin/stage0-bootstrap-tools/x86_64-apple-darwin/release/deps/libregex_syntax-fda7b81e2a32ebb6.rmeta --cap-lints allow --cfg=bootstrap --cfg=windows_raw_dylib -Csymbol-mangling-version=v0 -Zunstable-options '--check-cfg=cfg(bootstrap)' -Zmacro-backtrace -Csplit-debuginfo=unpacked -Zosx-rpath-install-name '-Clink-args=-Wl,-rpath,@loader_path/../lib' -Alinker-messages -Zunstable-options -Z binary-dep-depinfo` (exit status: 254) 2025-04-02T09:19:22.3988680Z �[1m�[33mwarning�[0m�[1m:�[0m build failed, waiting for other jobs to finish... 2025-04-02T09:19:22.8660870Z [RUSTC-TIMING] aho_corasick test:false 5.097 2025-04-02T09:19:22.8839790Z Build completed unsuccessfully in 0:05:30 ```