[INFO] cloning repository https://github.com/sarvex/clean-maelstrom
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sarvex/clean-maelstrom" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsarvex%2Fclean-maelstrom", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsarvex%2Fclean-maelstrom'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9886c2bb6796688d99d4a5ababd1c1847b3912f
[INFO] testing sarvex/clean-maelstrom against master#d7bd9cd469ff6871420007f091ef52fc32d2ca99 for pr-121417
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsarvex%2Fclean-maelstrom" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sarvex/clean-maelstrom on toolchain d7bd9cd469ff6871420007f091ef52fc32d2ca99
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sarvex/clean-maelstrom
[INFO] finished tweaking git repo https://github.com/sarvex/clean-maelstrom
[INFO] tweaked toml for git repo https://github.com/sarvex/clean-maelstrom written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sarvex/clean-maelstrom 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" "+d7bd9cd469ff6871420007f091ef52fc32d2ca99" "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
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing sarvex/clean-maelstrom against try#393ef12c970fbc7f294cd96c35cb76f9591bc1d6 for pr-121417
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsarvex%2Fclean-maelstrom" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sarvex/clean-maelstrom on toolchain 393ef12c970fbc7f294cd96c35cb76f9591bc1d6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sarvex/clean-maelstrom
[INFO] finished tweaking git repo https://github.com/sarvex/clean-maelstrom
[INFO] tweaked toml for git repo https://github.com/sarvex/clean-maelstrom written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sarvex/clean-maelstrom 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" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v2.0.47
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b2a40fb0335109f8b45110fb7a596c130c76406bc5309f8c75c8391b3585cfd
[INFO] running `Command { std: "docker" "start" "-a" "1b2a40fb0335109f8b45110fb7a596c130c76406bc5309f8c75c8391b3585cfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b2a40fb0335109f8b45110fb7a596c130c76406bc5309f8c75c8391b3585cfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b2a40fb0335109f8b45110fb7a596c130c76406bc5309f8c75c8391b3585cfd", kill_on_drop: false }`
[INFO] [stdout] 1b2a40fb0335109f8b45110fb7a596c130c76406bc5309f8c75c8391b3585cfd
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e382240306d2cd6091f565c7ff9825f7f0db7dff68c364143d293a8dad1f0d52
[INFO] running `Command { std: "docker" "start" "-a" "e382240306d2cd6091f565c7ff9825f7f0db7dff68c364143d293a8dad1f0d52", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling serde_json v1.0.113
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.47
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling maelstrom v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `send_all` is never used
[INFO] [stdout]   --> src/sender.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Sender {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn send_all(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.23s
[INFO] running `Command { std: "docker" "inspect" "e382240306d2cd6091f565c7ff9825f7f0db7dff68c364143d293a8dad1f0d52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e382240306d2cd6091f565c7ff9825f7f0db7dff68c364143d293a8dad1f0d52", kill_on_drop: false }`
[INFO] [stdout] e382240306d2cd6091f565c7ff9825f7f0db7dff68c364143d293a8dad1f0d52
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 502b4d62d2b84b1174b96822fe7de401bb89e9f772c34628738ca7911f5b46cf
[INFO] running `Command { std: "docker" "start" "-a" "502b4d62d2b84b1174b96822fe7de401bb89e9f772c34628738ca7911f5b46cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling maelstrom v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `send_all` is never used
[INFO] [stdout]   --> src/sender.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Sender {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn send_all(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "502b4d62d2b84b1174b96822fe7de401bb89e9f772c34628738ca7911f5b46cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "502b4d62d2b84b1174b96822fe7de401bb89e9f772c34628738ca7911f5b46cf", kill_on_drop: false }`
[INFO] [stdout] 502b4d62d2b84b1174b96822fe7de401bb89e9f772c34628738ca7911f5b46cf
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+393ef12c970fbc7f294cd96c35cb76f9591bc1d6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 52d19c44124ab8f7d6fffa404dc87258845796eaaebd027ff75b67ca6c85dba9
[INFO] running `Command { std: "docker" "start" "-a" "52d19c44124ab8f7d6fffa404dc87258845796eaaebd027ff75b67ca6c85dba9", kill_on_drop: false }`
[INFO] [stderr] warning: method `send_all` is never used
[INFO] [stderr]   --> src/sender.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 8  | impl Sender {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 23 |     pub fn send_all(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `maelstrom` (bin "maelstrom" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/maelstrom-4efd4528627d03b6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "52d19c44124ab8f7d6fffa404dc87258845796eaaebd027ff75b67ca6c85dba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52d19c44124ab8f7d6fffa404dc87258845796eaaebd027ff75b67ca6c85dba9", kill_on_drop: false }`
[INFO] [stdout] 52d19c44124ab8f7d6fffa404dc87258845796eaaebd027ff75b67ca6c85dba9