Inconsistent SIGSEGV while compiling the tracing-attributes crate on aarch64-unknown-linux-gnu

[vorporeal]

Code

Was compiling a closed-source application and encountered a SIGSEGV in rustc while compiling the tracing-attributes crate.

Unfortunately, this isn't something that reproduces consistently, and we've only seen it on CI and haven't reproduced it while building our application locally on our own machines.

In case it's relevant, we're building this within a Docker container running on an ARM mac machine.

Error output

error: rustc interrupted by SIGSEGV, printing backtrace

/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0xaeecfc)[0xffff9e2aecfc]
linux-vdso.so.1(__kernel_rt_sigreturn+0x0)[0xffffa64e37a0]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0x36d0998)[0xffffa0e90998]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0x36d3ebc)[0xffffa0e93ebc]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0x36d60fc)[0xffffa0e960fc]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0x36d7ae4)[0xffffa0e97ae4]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0x1bc7184)[0xffff9f387184]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0x28f671c)[0xffffa00b671c]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0x28f6880)[0xffffa00b6880]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0x28f73b8)[0xffffa00b73b8]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(LLVMRustWriteOutputFile+0x2fc)[0xffff9e5c615c]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0xdaa0cc)[0xffff9e56a0cc]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0xdadfa8)[0xffff9e56dfa8]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0xdd1f98)[0xffff9e591f98]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0xdd2260)[0xffff9e592260]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0xd8c7ec)[0xffff9e54c7ec]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/librustc_driver-d115806ff2b90af9.so(+0xdd3a44)[0xffff9e593a44]
/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/../lib/libstd-f4199621953e7607.so(rust_metadata_std_b7bdf322e3c58453+0x7e2c0)[0xffff9d70e2c0]
/lib/aarch64-linux-gnu/libc.so.6(+0x7d5c8)[0xffff9d55d5c8]
/lib/aarch64-linux-gnu/libc.so.6(+0xe5edc)[0xffff9d5c5edc]

note: we would appreciate a report at https://github.com/rust-lang/rust
error: could not compile `tracing-attributes` (lib)

Caused by:
  process didn't exit successfully: `/home/runner/.rustup/toolchains/1.76-aarch64-unknown-linux-gnu/bin/rustc --crate-name tracing_attributes --edition=2018 /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba[150](https://github.com/warpdotdev/warp-internal/actions/runs/9177791864/job/25236257221#step:9:151)01f/tracing-attributes-0.1.27/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C overflow-checks=off -C metadata=88747844d1c08518 -C extra-filename=-88747844d1c08518 --out-dir /home/runner/actions-runner/_work/warp-internal/warp-internal/target/release-lto-debug_assertions/deps -L dependency=/home/runner/actions-runner/_work/warp-internal/warp-internal/target/release-lto-debug_assertions/deps --extern proc_macro2=/home/runner/actions-runner/_work/warp-internal/warp-internal/target/release-lto-debug_assertions/deps/libproc_macro2-1841c4536c34974a.rlib --extern quote=/home/runner/actions-runner/_work/warp-internal/warp-internal/target/release-lto-debug_assertions/deps/libquote-fd0c58ac836ef0fc.rlib --extern syn=/home/runner/actions-runner/_work/warp-internal/warp-internal/target/release-lto-debug_assertions/deps/libsyn-f[157](https://github.com/warpdotdev/warp-internal/actions/runs/9177791864/job/25236257221#step:9:158)f538cb30d78f.rlib --extern proc_macro --cap-lints allow -Csymbol-mangling-version=v0` (signal: 11, SIGSEGV: invalid memory reference)

[workingjubilee]

@vorporeal Does this occur with 1.78 or nightly?

[workingjubilee]

Closing as lacking repro instructions / no confirmation of occurrence on recent compilers, please feel free to reopen if you have a confirmation that it repros on nightly.