[INFO] cloning repository https://github.com/brendanburkhart/mols
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brendanburkhart/mols" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrendanburkhart%2Fmols", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrendanburkhart%2Fmols'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f4ae1e225351c4a82f9deada290684a6b602a239
[INFO] testing brendanburkhart/mols against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrendanburkhart%2Fmols" "/workspace/builds/worker-114/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-114/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brendanburkhart/mols on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brendanburkhart/mols
[INFO] finished tweaking git repo https://github.com/brendanburkhart/mols
[INFO] tweaked toml for git repo https://github.com/brendanburkhart/mols written to /workspace/builds/worker-114/source/Cargo.toml
[INFO] crate git repo https://github.com/brendanburkhart/mols already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b65646a6a3ded85abccb1e21acb9c6980e4e40b31867c6968bffa599592573df
[INFO] running `Command { std: "docker" "start" "-a" "b65646a6a3ded85abccb1e21acb9c6980e4e40b31867c6968bffa599592573df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b65646a6a3ded85abccb1e21acb9c6980e4e40b31867c6968bffa599592573df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b65646a6a3ded85abccb1e21acb9c6980e4e40b31867c6968bffa599592573df", kill_on_drop: false }`
[INFO] [stdout] b65646a6a3ded85abccb1e21acb9c6980e4e40b31867c6968bffa599592573df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 032e58d59a718b60da9ad87897304eb812141aa2bf3c7b3ada8f1f10e4df3cea
[INFO] running `Command { std: "docker" "start" "-a" "032e58d59a718b60da9ad87897304eb812141aa2bf3c7b3ada8f1f10e4df3cea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mols v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `column_is_valid`
[INFO] [stdout]   --> src/latin_square.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn column_is_valid(&self, column_index: usize) -> 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: `is_latin`
[INFO] [stdout]   --> src/latin_square.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn is_latin(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.42s
[INFO] running `Command { std: "docker" "inspect" "032e58d59a718b60da9ad87897304eb812141aa2bf3c7b3ada8f1f10e4df3cea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "032e58d59a718b60da9ad87897304eb812141aa2bf3c7b3ada8f1f10e4df3cea", kill_on_drop: false }`
[INFO] [stdout] 032e58d59a718b60da9ad87897304eb812141aa2bf3c7b3ada8f1f10e4df3cea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4577fb81d2347eb7228fb9477dbdc290d0017a7d4e7710313050e1d331637f3a
[INFO] running `Command { std: "docker" "start" "-a" "4577fb81d2347eb7228fb9477dbdc290d0017a7d4e7710313050e1d331637f3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling mols v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `column_is_valid`
[INFO] [stdout]   --> src/latin_square.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn column_is_valid(&self, column_index: usize) -> 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: `is_latin`
[INFO] [stdout]   --> src/latin_square.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn is_latin(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "4577fb81d2347eb7228fb9477dbdc290d0017a7d4e7710313050e1d331637f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4577fb81d2347eb7228fb9477dbdc290d0017a7d4e7710313050e1d331637f3a", kill_on_drop: false }`
[INFO] [stdout] 4577fb81d2347eb7228fb9477dbdc290d0017a7d4e7710313050e1d331637f3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-114/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 61410009605a52774de048d5a754b8969c168e8c6413d178eef0629f10c25f06
[INFO] running `Command { std: "docker" "start" "-a" "61410009605a52774de048d5a754b8969c168e8c6413d178eef0629f10c25f06", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `column_is_valid`
[INFO] [stderr]   --> src/latin_square.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn column_is_valid(&self, column_index: usize) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_latin`
[INFO] [stderr]   --> src/latin_square.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn is_latin(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mols` (bin "mols" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.59s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mols-e369ea339743e387)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "61410009605a52774de048d5a754b8969c168e8c6413d178eef0629f10c25f06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61410009605a52774de048d5a754b8969c168e8c6413d178eef0629f10c25f06", kill_on_drop: false }`
[INFO] [stdout] 61410009605a52774de048d5a754b8969c168e8c6413d178eef0629f10c25f06