[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#438eb4c1a1c3841523d7f672601e8adbe04cff28 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fffanyq%2FRLock" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-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-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ffanyq/RLock on toolchain 438eb4c1a1c3841523d7f672601e8adbe04cff28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking ffanyq/RLock against try#438eb4c1a1c3841523d7f672601e8adbe04cff28 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fffanyq%2FRLock" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-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-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ffanyq/RLock on toolchain 438eb4c1a1c3841523d7f672601e8adbe04cff28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51efd09138e3e7507671962664ce56df9e39c74ff08e14ce2097b47c9f9fdd7d
[INFO] running `Command { std: "docker" "start" "-a" "51efd09138e3e7507671962664ce56df9e39c74ff08e14ce2097b47c9f9fdd7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51efd09138e3e7507671962664ce56df9e39c74ff08e14ce2097b47c9f9fdd7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51efd09138e3e7507671962664ce56df9e39c74ff08e14ce2097b47c9f9fdd7d", kill_on_drop: false }`
[INFO] [stdout] 51efd09138e3e7507671962664ce56df9e39c74ff08e14ce2097b47c9f9fdd7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e292fb5502a9cff7c7aba0a20251ba7675903382e9760d2a28c4f5eb5d0eec5
[INFO] running `Command { std: "docker" "start" "-a" "3e292fb5502a9cff7c7aba0a20251ba7675903382e9760d2a28c4f5eb5d0eec5", 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) 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 test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "3e292fb5502a9cff7c7aba0a20251ba7675903382e9760d2a28c4f5eb5d0eec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e292fb5502a9cff7c7aba0a20251ba7675903382e9760d2a28c4f5eb5d0eec5", kill_on_drop: false }`
[INFO] [stdout] 3e292fb5502a9cff7c7aba0a20251ba7675903382e9760d2a28c4f5eb5d0eec5