Fix hang on broken stderr. #9201
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Dylan-DPC-zz
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Update cargo 11 commits in bf5a5d5e5d3ae842a63bfce6d070dfd438cf6070..572e201536dc2e4920346e28037b63c0f4d88b3c 2021-02-18 15:49:14 +0000 to 2021-02-24 16:51:20 +0000 - Pass the error message format to rustdoc (rust-lang/cargo#9128) - Fix test target_in_environment_contains_lower_case (rust-lang/cargo#9203) - Fix hang on broken stderr. (rust-lang/cargo#9201) - Make it more clear which module is being tested when running cargo test (rust-lang/cargo#9195) - Updates to edition handling. (rust-lang/cargo#9184) - Add --cfg and --rustc-cfg flags to output compiler configuration (rust-lang/cargo#9002) - Run rustdoc doctests relative to the workspace (rust-lang/cargo#9105) - Add support for [env] section in .cargo/config.toml (rust-lang/cargo#9175) - Add schema field and `features2` to the index. (rust-lang/cargo#9161) - Document the default location where cargo install emitting build artifacts (rust-lang/cargo#9189) - Do not exit prematurely if anything failed installing. (rust-lang/cargo#9185)
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May 23, 2021
Building aarch64 wheels under qemu takes a long time. rust 1.52.1 includes fix for cargo that may result in compilation being stuck: rust-lang/cargo#9201
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If stderr is closed and cargo tries to print a status message such as "Compiling", cargo can get into a hung state. This is because the
DrainState::runfunction would insert the job into theactivequeue, and then return an error without starting the job. Since the job isn't started, there is nothing to remove it from theactivequeue, and thus cargo hangs forever waiting for it to finish.The solution is to move the call to
note_working_onearlier before the job is placed into the active queue.This addresses the issue noted in #8714 (comment).