[INFO] updating cached repository https://github.com/yagince/at-coder-practice-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/yagince/at-coder-practice-rs
[INFO] [stderr]    fdbeb67..ecae686  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ecae6863cb46fddafc7678b93c154903f59a3e0b
[INFO] testing yagince/at-coder-practice-rs against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyagince%2Fat-coder-practice-rs" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yagince/at-coder-practice-rs on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/yagince/at-coder-practice-rs
[INFO] removed workspace from git repo https://github.com/yagince/at-coder-practice-rs
[INFO] finished tweaking git repo https://github.com/yagince/at-coder-practice-rs
[INFO] tweaked toml for git repo https://github.com/yagince/at-coder-practice-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/yagince/at-coder-practice-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4c0911cc858296c20bc959b6c5b51e5ddf74fdd998760f22ef8a94924074d7df
[INFO] running `"docker" "start" "-a" "4c0911cc858296c20bc959b6c5b51e5ddf74fdd998760f22ef8a94924074d7df"`
[INFO] [stderr]    Compiling at-coder-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/abc057_b.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |         let mut indexes = diff_map.get_mut(&min).unwrap();
[INFO] [stderr]    |             ----^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 48s
[INFO] running `"docker" "inspect" "4c0911cc858296c20bc959b6c5b51e5ddf74fdd998760f22ef8a94924074d7df"`
[INFO] running `"docker" "rm" "-f" "4c0911cc858296c20bc959b6c5b51e5ddf74fdd998760f22ef8a94924074d7df"`
[INFO] [stdout] 4c0911cc858296c20bc959b6c5b51e5ddf74fdd998760f22ef8a94924074d7df
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 969b9fc96339b5f167cce0e81b22965dd9fd3d76d5d0bb3f9a7fe0ec340394e9
[INFO] running `"docker" "start" "-a" "969b9fc96339b5f167cce0e81b22965dd9fd3d76d5d0bb3f9a7fe0ec340394e9"`
[INFO] [stderr]    Compiling at-coder-practice v0.1.0 (/opt/rustwide/workdir)
[ERROR] error running command: no output for 300 seconds
[INFO] running `"docker" "inspect" "969b9fc96339b5f167cce0e81b22965dd9fd3d76d5d0bb3f9a7fe0ec340394e9"`
[ERROR] error running command: no output for 300 seconds
[INFO] running `"docker" "rm" "-f" "969b9fc96339b5f167cce0e81b22965dd9fd3d76d5d0bb3f9a7fe0ec340394e9"`
[INFO] [stdout] 969b9fc96339b5f167cce0e81b22965dd9fd3d76d5d0bb3f9a7fe0ec340394e9