[INFO] cloning repository https://github.com/yagince/at-coder-practice-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yagince/at-coder-practice-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyagince%2Fat-coder-practice-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyagince%2Fat-coder-practice-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ecae6863cb46fddafc7678b93c154903f59a3e0b
[INFO] checking yagince/at-coder-practice-rs against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyagince%2Fat-coder-practice-rs" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yagince/at-coder-practice-rs on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking 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-14/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae0acf0b04449e5da0fa28913c973bc1c6b8523f003cfd27d4527f5c44809f7f
[INFO] running `Command { std: "docker" "start" "-a" "ae0acf0b04449e5da0fa28913c973bc1c6b8523f003cfd27d4527f5c44809f7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae0acf0b04449e5da0fa28913c973bc1c6b8523f003cfd27d4527f5c44809f7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae0acf0b04449e5da0fa28913c973bc1c6b8523f003cfd27d4527f5c44809f7f", kill_on_drop: false }`
[INFO] [stdout] ae0acf0b04449e5da0fa28913c973bc1c6b8523f003cfd27d4527f5c44809f7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f18875b4f96a442483a9d550aa53d39884759c572a522c97470c3af0dd6edef
[INFO] running `Command { std: "docker" "start" "-a" "7f18875b4f96a442483a9d550aa53d39884759c572a522c97470c3af0dd6edef", kill_on_drop: false }`
[INFO] [stderr]     Checking at-coder-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/abc057_b.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut indexes = diff_map.get_mut(&min).unwrap();
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/abc057_b.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut indexes = diff_map.get_mut(&min).unwrap();
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `Command { std: "docker" "inspect" "7f18875b4f96a442483a9d550aa53d39884759c572a522c97470c3af0dd6edef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f18875b4f96a442483a9d550aa53d39884759c572a522c97470c3af0dd6edef", kill_on_drop: false }`
[INFO] [stdout] 7f18875b4f96a442483a9d550aa53d39884759c572a522c97470c3af0dd6edef