[INFO] cloning repository https://github.com/alternately/mw_balancer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alternately/mw_balancer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falternately%2Fmw_balancer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falternately%2Fmw_balancer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74447443b28b21bacf461cbc5656bb4dc15f1ac1
[INFO] checking alternately/mw_balancer against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falternately%2Fmw_balancer" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alternately/mw_balancer on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alternately/mw_balancer
[INFO] finished tweaking git repo https://github.com/alternately/mw_balancer
[INFO] tweaked toml for git repo https://github.com/alternately/mw_balancer written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/alternately/mw_balancer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7da381b50db7aee5b44802a225b496212745e1cc9639dac1daeb481c2b038df9
[INFO] running `Command { std: "docker" "start" "-a" "7da381b50db7aee5b44802a225b496212745e1cc9639dac1daeb481c2b038df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7da381b50db7aee5b44802a225b496212745e1cc9639dac1daeb481c2b038df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7da381b50db7aee5b44802a225b496212745e1cc9639dac1daeb481c2b038df9", kill_on_drop: false }`
[INFO] [stdout] 7da381b50db7aee5b44802a225b496212745e1cc9639dac1daeb481c2b038df9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68e80bbbd03be28b1325ddf6a34b09dbdb87927444befc7f581216fa665d99d9
[INFO] running `Command { std: "docker" "start" "-a" "68e80bbbd03be28b1325ddf6a34b09dbdb87927444befc7f581216fa665d99d9", kill_on_drop: false }`
[INFO] [stderr]     Checking mw_balancer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:224:59
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let avg = mean(h.region_path_distances(&regions));;
[INFO] [stdout]     |                                                           ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/main.rs:224:59
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let avg = mean(h.region_path_distances(&regions));;
[INFO] [stdout]     |                                                           ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eq`
[INFO] [stdout]   --> src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn eq(&self, harold: &Hex) -> bool {
[INFO] [stdout]    |        ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains`
[INFO] [stdout]    --> src/main.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn contains(&self, harold: &Hex) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eq`
[INFO] [stdout]   --> src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn eq(&self, harold: &Hex) -> bool {
[INFO] [stdout]    |        ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contains`
[INFO] [stdout]    --> src/main.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn contains(&self, harold: &Hex) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "68e80bbbd03be28b1325ddf6a34b09dbdb87927444befc7f581216fa665d99d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68e80bbbd03be28b1325ddf6a34b09dbdb87927444befc7f581216fa665d99d9", kill_on_drop: false }`
[INFO] [stdout] 68e80bbbd03be28b1325ddf6a34b09dbdb87927444befc7f581216fa665d99d9