process_wrapper shouldn't choke on rustc warnings #3666
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krasimirgg
approved these changes
Oct 14, 2025
Previously " WARN ..." output on stderr would cause process wrapper to give up parsing the json and emit it verbatim. ``` WARN rustc_errors::emitter Invalid span ./snip.rs:49:25: 49:25 (bazelbuild#7), error=SourceNotAvailable { filename: Real(Remapped { local_path: None, virtual_name: "./snip.rs" }) } WARN rustc_errors::emitter Invalid span ./snip.rs:49:31: 49:31 (bazelbuild#7), error=SourceNotAvailable { filename: Real(Remapped { local_path: None, virtual_name: "./snip.rs" }) } {"$message_type":"diagnostic","message":"expected a literal (`1u8`, `1.0f32`, `\"string\"`, etc.) here, found `concat`","code":null,"level":"error","spans": ... ```
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@krasimirgg oops, fixed now. Remaining failures are unrelated. |
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Previously " WARN ..." output on stderr would cause process wrapper to give up parsing the json and emit it verbatim.