[INFO] cloning repository https://github.com/jacek-kurlit/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jacek-kurlit/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacek-kurlit%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacek-kurlit%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dde4eb92ab77acda524b88108fb0c06fb23864c5
[INFO] testing jacek-kurlit/learning-rust against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacek-kurlit%2Flearning-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/jacek-kurlit/learning-rust
[INFO] finished tweaking git repo https://github.com/jacek-kurlit/learning-rust
[INFO] tweaked toml for git repo https://github.com/jacek-kurlit/learning-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jacek-kurlit/learning-rust on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jacek-kurlit/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97bc053618d009c917648fb2b97872e490cee2b1c41444bdd83b1368ae524c71
[INFO] running `Command { std: "docker" "start" "-a" "97bc053618d009c917648fb2b97872e490cee2b1c41444bdd83b1368ae524c71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97bc053618d009c917648fb2b97872e490cee2b1c41444bdd83b1368ae524c71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97bc053618d009c917648fb2b97872e490cee2b1c41444bdd83b1368ae524c71", kill_on_drop: false }`
[INFO] [stdout] 97bc053618d009c917648fb2b97872e490cee2b1c41444bdd83b1368ae524c71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bfe1cb1cf338bbd89c058b3c0bfc1ee2ec6687745be46bbe7f9f11058e0b00fb
[INFO] running `Command { std: "docker" "start" "-a" "bfe1cb1cf338bbd89c058b3c0bfc1ee2ec6687745be46bbe7f9f11058e0b00fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected `{`, found `}`
[INFO] [stdout]   --> src/topics/async_await.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |           while while let Ok(stream) = accept.wait  {
[INFO] [stdout]    |  _________-----_-
[INFO] [stdout]    | |         |
[INFO] [stdout]    | |         while parsing the body of this `while` expression
[INFO] [stdout] ...  |
[INFO] [stdout] 72 | |         }
[INFO] [stdout]    | |_________- this `while` condition successfully parsed
[INFO] [stdout] 73 |       });
[INFO] [stdout]    |       ^ expected `{`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected item after doc comment
[INFO] [stdout]    --> src/topics/async_await.rs:107:1
[INFO] [stdout]     |
[INFO] [stdout] 103 | / /// What is the difference between std Mutex and tokio Mutex?
[INFO] [stdout] 104 | | /// tokio Mutex is async aware and std Mutex is not
[INFO] [stdout] 105 | | /// std Mutex simply blocks so using it between .await may cause dead locks
[INFO] [stdout] 106 | | /// On the other hand tokio Mutex is much more complex and may need additional time to aquire and
[INFO] [stdout]     | |_________________________________________________________________________________________________- other attributes here
[INFO] [stdout] 107 |   /// unlock mutex
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^ this doc comment doesn't document anything
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learning_rust` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bfe1cb1cf338bbd89c058b3c0bfc1ee2ec6687745be46bbe7f9f11058e0b00fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfe1cb1cf338bbd89c058b3c0bfc1ee2ec6687745be46bbe7f9f11058e0b00fb", kill_on_drop: false }`
[INFO] [stdout] bfe1cb1cf338bbd89c058b3c0bfc1ee2ec6687745be46bbe7f9f11058e0b00fb