[INFO] cloning repository https://github.com/SteffenSunde/aoc_2018_rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SteffenSunde/aoc_2018_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSteffenSunde%2Faoc_2018_rs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSteffenSunde%2Faoc_2018_rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e63cbdb6473c1bc47a600459fab74d510f8a9ebe
[INFO] checking SteffenSunde/aoc_2018_rs against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSteffenSunde%2Faoc_2018_rs" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SteffenSunde/aoc_2018_rs on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/SteffenSunde/aoc_2018_rs
[INFO] finished tweaking git repo https://github.com/SteffenSunde/aoc_2018_rs
[INFO] tweaked toml for git repo https://github.com/SteffenSunde/aoc_2018_rs written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/SteffenSunde/aoc_2018_rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9f803d5156c88947783015261be3a24d6efe3c3e1efdc6c9c2b959b10fd3c1e0
[INFO] running `"docker" "start" "-a" "9f803d5156c88947783015261be3a24d6efe3c3e1efdc6c9c2b959b10fd3c1e0"`
[INFO] [stderr]     Checking aoc_2018_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day02.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut df2 = BufReader::new(&df2);
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day02.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut df2 = BufReader::new(&df2);
[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 0.56s
[INFO] running `"docker" "inspect" "9f803d5156c88947783015261be3a24d6efe3c3e1efdc6c9c2b959b10fd3c1e0"`
[INFO] running `"docker" "rm" "-f" "9f803d5156c88947783015261be3a24d6efe3c3e1efdc6c9c2b959b10fd3c1e0"`
[INFO] [stdout] 9f803d5156c88947783015261be3a24d6efe3c3e1efdc6c9c2b959b10fd3c1e0