Show stderr when an eprintln profiler invocation fails
#2274
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This allows us to see compiler failures during PGO/BOLT profiling on rustc CI.
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nnethercote
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matthiaskrgr
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…ethercote Update rustc-perf submodule To bring in rust-lang/rustc-perf#2274. r? `@nnethercote`
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…ethercote Update rustc-perf submodule To bring in rust-lang/rustc-perf#2274, rust-lang/rustc-perf#2275 and rust-lang/rustc-perf#2276. r? `@nnethercote` try-job: dist-x86_64-linux try-job: dist-x86_64-msvc
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Rollup merge of #147515 - Kobzol:update-rustc-perf, r=lqd,nnethercote Update rustc-perf submodule To bring in rust-lang/rustc-perf#2274, rust-lang/rustc-perf#2275 and rust-lang/rustc-perf#2276. r? `@nnethercote` try-job: dist-x86_64-linux try-job: dist-x86_64-msvc
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This allows us to see compiler failures during PGO/BOLT profiling on rustc CI.
https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/Help.20needed.20with.20PGO.20build.20failure/with/543890687