[INFO] updating cached repository https://github.com/amnn/adventofcode-2018
[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] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 149174a4a021f051b577d331460eed48b3c8199d
[INFO] checking amnn/adventofcode-2018 against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famnn%2Fadventofcode-2018" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amnn/adventofcode-2018 on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/amnn/adventofcode-2018
[INFO] finished tweaking git repo https://github.com/amnn/adventofcode-2018
[INFO] tweaked toml for git repo https://github.com/amnn/adventofcode-2018 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/amnn/adventofcode-2018 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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] f3651a61f013deec9e2820cf6f8d6c4cca6c602ddf04a6fb478fa85f4cc2fdec
[INFO] running `"docker" "start" "-a" "f3651a61f013deec9e2820cf6f8d6c4cca6c602ddf04a6fb478fa85f4cc2fdec"`
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]     Checking adventofcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/day13/main.rs:140:17
[INFO] [stderr]     |
[INFO] [stderr] 140 |             let mut r = BufReader::new(init.as_bytes());
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/day15/main.rs:115:17
[INFO] [stderr]     |
[INFO] [stderr] 115 |             let mut r = BufReader::new(init.as_bytes());
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/day15/main.rs:351:29
[INFO] [stderr]     |
[INFO] [stderr] 351 |                         let mut count = deaths.entry(enemy).or_insert(0);
[INFO] [stderr]     |                             ----^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day07/main.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |             let mut nbr = nodes.get_mut(&out).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: variable does not need to be mutable
[INFO] [stderr]   --> src/day07/main.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |             let mut nbr = nodes.get_mut(&out).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: variable does not need to be mutable
[INFO] [stderr]    --> src/day15/main.rs:115:17
[INFO] [stderr]     |
[INFO] [stderr] 115 |             let mut r = BufReader::new(init.as_bytes());
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/day15/main.rs:351:29
[INFO] [stderr]     |
[INFO] [stderr] 351 |                         let mut count = deaths.entry(enemy).or_insert(0);
[INFO] [stderr]     |                             ----^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/day04/main.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |         let mut counter = sleep_totals.entry(guard).or_insert(0);
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/day13/main.rs:140:17
[INFO] [stderr]     |
[INFO] [stderr] 140 |             let mut r = BufReader::new(init.as_bytes());
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/day04/main.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |         let mut counter = sleep_totals.entry(guard).or_insert(0);
[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]     Finished dev [unoptimized + debuginfo] target(s) in 13.60s
[INFO] running `"docker" "inspect" "f3651a61f013deec9e2820cf6f8d6c4cca6c602ddf04a6fb478fa85f4cc2fdec"`
[INFO] running `"docker" "rm" "-f" "f3651a61f013deec9e2820cf6f8d6c4cca6c602ddf04a6fb478fa85f4cc2fdec"`
[INFO] [stdout] f3651a61f013deec9e2820cf6f8d6c4cca6c602ddf04a6fb478fa85f4cc2fdec