[INFO] cloning repository https://github.com/zea7ot/leetcode_solutions_rust_zea7ot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zea7ot/leetcode_solutions_rust_zea7ot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzea7ot%2Fleetcode_solutions_rust_zea7ot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzea7ot%2Fleetcode_solutions_rust_zea7ot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78cffce01cb70c07ecd585cc270f2e62ff2be186
[INFO] checking zea7ot/leetcode_solutions_rust_zea7ot against try#7c3a44cf5f95fa5cf164a312bdcf845157af7093 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzea7ot%2Fleetcode_solutions_rust_zea7ot" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zea7ot/leetcode_solutions_rust_zea7ot on toolchain 7c3a44cf5f95fa5cf164a312bdcf845157af7093
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zea7ot/leetcode_solutions_rust_zea7ot
[INFO] finished tweaking git repo https://github.com/zea7ot/leetcode_solutions_rust_zea7ot
[INFO] tweaked toml for git repo https://github.com/zea7ot/leetcode_solutions_rust_zea7ot written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/zea7ot/leetcode_solutions_rust_zea7ot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8ebf6bfa91bb469d4e5b435ea3535602d91e6bd051e8a416eaed05172d82a288
[INFO] running `Command { std: "docker" "start" "-a" "8ebf6bfa91bb469d4e5b435ea3535602d91e6bd051e8a416eaed05172d82a288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ebf6bfa91bb469d4e5b435ea3535602d91e6bd051e8a416eaed05172d82a288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ebf6bfa91bb469d4e5b435ea3535602d91e6bd051e8a416eaed05172d82a288", kill_on_drop: false }`
[INFO] [stdout] 8ebf6bfa91bb469d4e5b435ea3535602d91e6bd051e8a416eaed05172d82a288
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b8fff6461ccc04a390ed70def4e17a8eba1cc69a29ffbfd429d14de18faf8d2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3b8fff6461ccc04a390ed70def4e17a8eba1cc69a29ffbfd429d14de18faf8d2", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode_solutions_rust_an7one v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/leetcode/lvl4/lc0968/soln_0_postorder_recursive.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/leetcode/lvl4/lc0968/soln_0_postorder_recursive.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `Command { std: "docker" "inspect" "3b8fff6461ccc04a390ed70def4e17a8eba1cc69a29ffbfd429d14de18faf8d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b8fff6461ccc04a390ed70def4e17a8eba1cc69a29ffbfd429d14de18faf8d2", kill_on_drop: false }`
[INFO] [stdout] 3b8fff6461ccc04a390ed70def4e17a8eba1cc69a29ffbfd429d14de18faf8d2