[INFO] updating cached repository https://github.com/HarukiUchito/rust_cp
[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] f1ecc8bf5bfd6722ec78a62b804a06f55300e09f
[INFO] checking HarukiUchito/rust_cp against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarukiUchito%2Frust_cp" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HarukiUchito/rust_cp on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/HarukiUchito/rust_cp
[INFO] finished tweaking git repo https://github.com/HarukiUchito/rust_cp
[INFO] tweaked toml for git repo https://github.com/HarukiUchito/rust_cp written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/HarukiUchito/rust_cp already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "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] 04b29fc25d5754ce960a9fb6295acb3b8bd952cff51bb323c5a10ad06b83e8cf
[INFO] running `"docker" "start" "-a" "04b29fc25d5754ce960a9fb6295acb3b8bd952cff51bb323c5a10ad06b83e8cf"`
[INFO] [stderr]     Checking competitive_programming v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/main.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let mut pr = ContestPrinter::new();
[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: unnecessary trailing semicolon
[INFO] [stderr]    --> src/bin/shorten_diameter.rs:109:31
[INFO] [stderr]     |
[INFO] [stderr] 109 |         for i in 0..ab.len() {; // center edge
[INFO] [stderr]     |                               ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/bin/shorten_diameter.rs:109:31
[INFO] [stderr]     |
[INFO] [stderr] 109 |         for i in 0..ab.len() {; // center edge
[INFO] [stderr]     |                               ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/main.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let mut pr = ContestPrinter::new();
[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 38.63s
[INFO] running `"docker" "inspect" "04b29fc25d5754ce960a9fb6295acb3b8bd952cff51bb323c5a10ad06b83e8cf"`
[INFO] running `"docker" "rm" "-f" "04b29fc25d5754ce960a9fb6295acb3b8bd952cff51bb323c5a10ad06b83e8cf"`
[INFO] [stdout] 04b29fc25d5754ce960a9fb6295acb3b8bd952cff51bb323c5a10ad06b83e8cf