[INFO] cloning repository https://github.com/rbeneyton/AdventOfCode2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rbeneyton/AdventOfCode2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frbeneyton%2FAdventOfCode2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frbeneyton%2FAdventOfCode2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1766e4a47362e05a7bc8d9e5170475b34615170f
[INFO] checking rbeneyton/AdventOfCode2021 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frbeneyton%2FAdventOfCode2021" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rbeneyton/AdventOfCode2021
[INFO] finished tweaking git repo https://github.com/rbeneyton/AdventOfCode2021
[INFO] tweaked toml for git repo https://github.com/rbeneyton/AdventOfCode2021 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rbeneyton/AdventOfCode2021 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rbeneyton/AdventOfCode2021 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap_derive v3.0.0-beta.5
[INFO] [stderr]   Downloaded os_str_bytes v4.2.0
[INFO] [stderr]   Downloaded clap v3.0.0-beta.5
[INFO] [stderr]   Downloaded curl v0.4.41
[INFO] [stderr]   Downloaded libz-sys v1.1.3
[INFO] [stderr]   Downloaded curl-sys v0.4.51+curl-7.80.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5eddeb8528e88ba58e0d7491bb7b2f31f510ce00c7d62d3d6d892ebd898f810a
[INFO] running `Command { std: "docker" "start" "-a" "5eddeb8528e88ba58e0d7491bb7b2f31f510ce00c7d62d3d6d892ebd898f810a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5eddeb8528e88ba58e0d7491bb7b2f31f510ce00c7d62d3d6d892ebd898f810a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eddeb8528e88ba58e0d7491bb7b2f31f510ce00c7d62d3d6d892ebd898f810a", kill_on_drop: false }`
[INFO] [stdout] 5eddeb8528e88ba58e0d7491bb7b2f31f510ce00c7d62d3d6d892ebd898f810a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12988d747c9ab97d59fdffa845add14dad7196a4766cd75995ae0e0db3c72724
[INFO] running `Command { std: "docker" "start" "-a" "12988d747c9ab97d59fdffa845add14dad7196a4766cd75995ae0e0db3c72724", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling curl v0.4.41
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking os_str_bytes v4.2.0
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling curl-sys v0.4.51+curl-7.80.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.5
[INFO] [stderr]     Checking clap v3.0.0-beta.5
[INFO] [stderr]     Checking avent2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/solutions/day04.rs:104:23
[INFO] [stdout]     |
[INFO] [stdout] 104 |             for (idx, mut board) in boards.iter_mut().enumerate() {
[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/solutions/day04.rs:104:23
[INFO] [stdout]     |
[INFO] [stdout] 104 |             for (idx, mut board) in boards.iter_mut().enumerate() {
[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: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/solutions/day15.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         drop(idx_of);
[INFO] [stdout]    |         ^^^^^------^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `{closure@src/solutions/day15.rs:76:22: 76:28}`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 91 -         drop(idx_of);
[INFO] [stdout] 91 +         let _ = idx_of;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing
[INFO] [stdout]   --> src/solutions/day15.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         drop(idx_of);
[INFO] [stdout]    |         ^^^^^------^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `{closure@src/solutions/day15.rs:76:22: 76:28}`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_copy_types)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 91 -         drop(idx_of);
[INFO] [stdout] 91 +         let _ = idx_of;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.33s
[INFO] running `Command { std: "docker" "inspect" "12988d747c9ab97d59fdffa845add14dad7196a4766cd75995ae0e0db3c72724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12988d747c9ab97d59fdffa845add14dad7196a4766cd75995ae0e0db3c72724", kill_on_drop: false }`
[INFO] [stdout] 12988d747c9ab97d59fdffa845add14dad7196a4766cd75995ae0e0db3c72724