[INFO] cloning repository https://github.com/idubrov/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/idubrov/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fidubrov%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fidubrov%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b8e2152b65699dd90447e10d7ba2dcc7ef067f0
[INFO] checking idubrov/aoc2020 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fidubrov%2Faoc2020" "/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/idubrov/aoc2020 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/idubrov/aoc2020
[INFO] finished tweaking git repo https://github.com/idubrov/aoc2020
[INFO] tweaked toml for git repo https://github.com/idubrov/aoc2020 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/idubrov/aoc2020 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c16b04ca6b08bef9399864df6833fbf5955b186ebb9054a4f3d00548df148c3
[INFO] running `Command { std: "docker" "start" "-a" "2c16b04ca6b08bef9399864df6833fbf5955b186ebb9054a4f3d00548df148c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c16b04ca6b08bef9399864df6833fbf5955b186ebb9054a4f3d00548df148c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c16b04ca6b08bef9399864df6833fbf5955b186ebb9054a4f3d00548df148c3", kill_on_drop: false }`
[INFO] [stdout] 2c16b04ca6b08bef9399864df6833fbf5955b186ebb9054a4f3d00548df148c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e565fe614e29b6fc30e58addd265e2fcf441c5b4a5e99ba26c5d652509123e76
[INFO] running `Command { std: "docker" "start" "-a" "e565fe614e29b6fc30e58addd265e2fcf441c5b4a5e99ba26c5d652509123e76", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day06.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |       let mut sets = g.iter().map(|g| g.chars().collect::<HashSet<char>>());
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/day06.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |       let mut sets = g.iter().map(|g| g.chars().collect::<HashSet<char>>());
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "e565fe614e29b6fc30e58addd265e2fcf441c5b4a5e99ba26c5d652509123e76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e565fe614e29b6fc30e58addd265e2fcf441c5b4a5e99ba26c5d652509123e76", kill_on_drop: false }`
[INFO] [stdout] e565fe614e29b6fc30e58addd265e2fcf441c5b4a5e99ba26c5d652509123e76