[INFO] cloning repository https://github.com/ffanyq/RLock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ffanyq/RLock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fffanyq%2FRLock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fffanyq%2FRLock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6a74bfecb8686d8dea9b57f46b7d9fcc070cc47
[INFO] checking ffanyq/RLock against try#c0a9760914bada211f4924ee16d41ae1a366d2ba for pr-148545
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fffanyq%2FRLock" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ffanyq/RLock
[INFO] finished tweaking git repo https://github.com/ffanyq/RLock
[INFO] tweaked toml for git repo https://github.com/ffanyq/RLock written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ffanyq/RLock on toolchain c0a9760914bada211f4924ee16d41ae1a366d2ba
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ffanyq/RLock 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" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea01ed01460bcf604594cbdb151acd40abede36313469bdbe31f116a31b4683b
[INFO] running `Command { std: "docker" "start" "-a" "ea01ed01460bcf604594cbdb151acd40abede36313469bdbe31f116a31b4683b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea01ed01460bcf604594cbdb151acd40abede36313469bdbe31f116a31b4683b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea01ed01460bcf604594cbdb151acd40abede36313469bdbe31f116a31b4683b", kill_on_drop: false }`
[INFO] [stdout] ea01ed01460bcf604594cbdb151acd40abede36313469bdbe31f116a31b4683b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+c0a9760914bada211f4924ee16d41ae1a366d2ba" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75d90160a9ab1ef7426a0e6d7ba7fc3c26e331e57277bbc38a75a3f9ab85375b
[INFO] running `Command { std: "docker" "start" "-a" "75d90160a9ab1ef7426a0e6d7ba7fc3c26e331e57277bbc38a75a3f9ab85375b", kill_on_drop: false }`
[INFO] [stderr]     Checking mycode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected type, found `}`
[INFO] [stdout]  --> src/std_sync.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Mutex<T> {
[INFO] [stdout]   |        ----- while parsing this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 | }
[INFO] [stdout]   | ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `}`
[INFO] [stdout]  --> src/std_sync.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Mutex<T> {
[INFO] [stdout]   |        ----- while parsing this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 | }
[INFO] [stdout]   | ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lock_manager.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let mut ls = self.tid_to_lockset.get_mut(&t_id).unwrap();
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lock_manager.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let mut ls = self.tid_to_lockset.get_mut(&t_id).unwrap();
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mycode` (lib test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `mycode` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "75d90160a9ab1ef7426a0e6d7ba7fc3c26e331e57277bbc38a75a3f9ab85375b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75d90160a9ab1ef7426a0e6d7ba7fc3c26e331e57277bbc38a75a3f9ab85375b", kill_on_drop: false }`
[INFO] [stdout] 75d90160a9ab1ef7426a0e6d7ba7fc3c26e331e57277bbc38a75a3f9ab85375b