[INFO] cloning repository https://github.com/bodagovsky/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bodagovsky/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dbff8107798b237c9467157abef39a4c508ee006
[INFO] checking bodagovsky/aoc2020 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbodagovsky%2Faoc2020" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bodagovsky/aoc2020 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bodagovsky/aoc2020
[INFO] finished tweaking git repo https://github.com/bodagovsky/aoc2020
[INFO] tweaked toml for git repo https://github.com/bodagovsky/aoc2020 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/bodagovsky/aoc2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3634754314d31360c69fef95e4c55f61abd847bf65eb982dbb4b32a7c8262ff4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3634754314d31360c69fef95e4c55f61abd847bf65eb982dbb4b32a7c8262ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3634754314d31360c69fef95e4c55f61abd847bf65eb982dbb4b32a7c8262ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3634754314d31360c69fef95e4c55f61abd847bf65eb982dbb4b32a7c8262ff4", kill_on_drop: false }`
[INFO] [stdout] 3634754314d31360c69fef95e4c55f61abd847bf65eb982dbb4b32a7c8262ff4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fb820f5727fc6f4d986157f0142e6f50a7c066bc7946d15dad56ec3303cf6dbb
[INFO] running `Command { std: "docker" "start" "-a" "fb820f5727fc6f4d986157f0142e6f50a7c066bc7946d15dad56ec3303cf6dbb", kill_on_drop: false }`
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day3.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn count_trees(mut right: usize, mut down: usize, forest: Vec<String>) -> i64 {
[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/day3.rs:17:34
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn count_trees(mut right: usize, mut down: usize, forest: Vec<String>) -> i64 {
[INFO] [stdout]    |                                  ----^^^^
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day3.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn count_trees(mut right: usize, mut down: usize, forest: Vec<String>) -> i64 {
[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/day3.rs:17:34
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn count_trees(mut right: usize, mut down: usize, forest: Vec<String>) -> i64 {
[INFO] [stdout]    |                                  ----^^^^
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "fb820f5727fc6f4d986157f0142e6f50a7c066bc7946d15dad56ec3303cf6dbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb820f5727fc6f4d986157f0142e6f50a7c066bc7946d15dad56ec3303cf6dbb", kill_on_drop: false }`
[INFO] [stdout] fb820f5727fc6f4d986157f0142e6f50a7c066bc7946d15dad56ec3303cf6dbb