Report the actual error when failing to get the rustc version #3000
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This should help with pinpointing the issue in rust-lang/crater#663.
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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @JohnTitor (or someone else) soon. Please see the contribution instructions for more information. |
JohnTitor
approved these changes
Nov 12, 2022
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👍, @bors r+ |
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☀️ Test successful - checks-actions, checks-cirrus-freebsd-12, checks-cirrus-freebsd-13, checks-cirrus-freebsd-14 |
bors
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Apr 3, 2023
build.rs: print rustc stderr if exit status != 0 I was trying to run benchmarks locally with rustc-perf and found that many of them failed to build with a message from libc's build.rs "Failed to get rustc version." I made this change locally to help debug, and I think it would be generally useful. In my case it quickly revealed that rustc was failing to find libLLVM and so `rustc --version` was emitting nothing on stdout. I think this may have been part of what was intended with #3000 and might help debug rust-lang/crater#663.
bors
added a commit
that referenced
this pull request
Apr 3, 2023
build.rs: print rustc stderr if exit status != 0 I was trying to run benchmarks locally with rustc-perf and found that many of them failed to build with a message from libc's build.rs "Failed to get rustc version." I made this change locally to help debug, and I think it would be generally useful. In my case it quickly revealed that rustc was failing to find libLLVM and so `rustc --version` was emitting nothing on stdout. I think this may have been part of what was intended with #3000 and might help debug rust-lang/crater#663.
bors
added a commit
that referenced
this pull request
Apr 4, 2023
build.rs: print rustc stderr if exit status != 0 I was trying to run benchmarks locally with rustc-perf and found that many of them failed to build with a message from libc's build.rs "Failed to get rustc version." I made this change locally to help debug, and I think it would be generally useful. In my case it quickly revealed that rustc was failing to find libLLVM and so `rustc --version` was emitting nothing on stdout. I think this may have been part of what was intended with #3000 and might help debug rust-lang/crater#663.
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This should help with pinpointing the issue in rust-lang/crater#663.