[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] testing alternately/mw_balancer against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falternately%2Fmw_balancer" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alternately/mw_balancer on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", 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-5/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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f612fda494f9491793b45f699f0f45aa2b19834df2ce0c4032c7b0f93be12bfc
[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" "f612fda494f9491793b45f699f0f45aa2b19834df2ce0c4032c7b0f93be12bfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f612fda494f9491793b45f699f0f45aa2b19834df2ce0c4032c7b0f93be12bfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f612fda494f9491793b45f699f0f45aa2b19834df2ce0c4032c7b0f93be12bfc", kill_on_drop: false }`
[INFO] [stdout] f612fda494f9491793b45f699f0f45aa2b19834df2ce0c4032c7b0f93be12bfc
[INFO] running `Command { std: "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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60680cc4471a5ea0bbeee5becc6bdbb0b2d15dffc3cb4838b06534ce67fa28c8
[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" "60680cc4471a5ea0bbeee5becc6bdbb0b2d15dffc3cb4838b06534ce67fa28c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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 1.00s
[INFO] running `Command { std: "docker" "inspect" "60680cc4471a5ea0bbeee5becc6bdbb0b2d15dffc3cb4838b06534ce67fa28c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60680cc4471a5ea0bbeee5becc6bdbb0b2d15dffc3cb4838b06534ce67fa28c8", kill_on_drop: false }`
[INFO] [stdout] 60680cc4471a5ea0bbeee5becc6bdbb0b2d15dffc3cb4838b06534ce67fa28c8
[INFO] running `Command { std: "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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7834f403b0e4bf0ff3f3ef12004cff47b4176a15840e37b2a76da47b873e8982
[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" "7834f403b0e4bf0ff3f3ef12004cff47b4176a15840e37b2a76da47b873e8982", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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 test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "7834f403b0e4bf0ff3f3ef12004cff47b4176a15840e37b2a76da47b873e8982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7834f403b0e4bf0ff3f3ef12004cff47b4176a15840e37b2a76da47b873e8982", kill_on_drop: false }`
[INFO] [stdout] 7834f403b0e4bf0ff3f3ef12004cff47b4176a15840e37b2a76da47b873e8982
[INFO] running `Command { std: "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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 77a1671c7329f91f886f3f5f6b9927cee1a4f6665cb8886a85848d19e4d4513e
[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" "77a1671c7329f91f886f3f5f6b9927cee1a4f6665cb8886a85848d19e4d4513e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/main.rs:224:59
[INFO] [stderr]     |
[INFO] [stderr] 224 |         let avg = mean(h.region_path_distances(&regions));;
[INFO] [stderr]     |                                                           ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `eq`
[INFO] [stderr]   --> src/main.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn eq(&self, harold: &Hex) -> bool {
[INFO] [stderr]    |        ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `contains`
[INFO] [stderr]    --> src/main.rs:115:8
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn contains(&self, harold: &Hex) -> bool {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mw_balancer-233fcf41d5ef5e61
[INFO] running `Command { std: "docker" "inspect" "77a1671c7329f91f886f3f5f6b9927cee1a4f6665cb8886a85848d19e4d4513e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77a1671c7329f91f886f3f5f6b9927cee1a4f6665cb8886a85848d19e4d4513e", kill_on_drop: false }`
[INFO] [stdout] 77a1671c7329f91f886f3f5f6b9927cee1a4f6665cb8886a85848d19e4d4513e