[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 try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrendanburkhart%2Fmols" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brendanburkhart/mols on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-1/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f7b4c66f74fcd2310b64dcd9267773878d2afbff72083418a3c2fbf6eb5e127
[INFO] running `Command { std: "docker" "start" "-a" "9f7b4c66f74fcd2310b64dcd9267773878d2afbff72083418a3c2fbf6eb5e127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f7b4c66f74fcd2310b64dcd9267773878d2afbff72083418a3c2fbf6eb5e127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f7b4c66f74fcd2310b64dcd9267773878d2afbff72083418a3c2fbf6eb5e127", kill_on_drop: false }`
[INFO] [stdout] 9f7b4c66f74fcd2310b64dcd9267773878d2afbff72083418a3c2fbf6eb5e127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2fa31b463ab74f34deeac5e537abf59ea8c1bd7a98690825f6039c214926346
[INFO] running `Command { std: "docker" "start" "-a" "b2fa31b463ab74f34deeac5e537abf59ea8c1bd7a98690825f6039c214926346", 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 16.27s
[INFO] running `Command { std: "docker" "inspect" "b2fa31b463ab74f34deeac5e537abf59ea8c1bd7a98690825f6039c214926346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2fa31b463ab74f34deeac5e537abf59ea8c1bd7a98690825f6039c214926346", kill_on_drop: false }`
[INFO] [stdout] b2fa31b463ab74f34deeac5e537abf59ea8c1bd7a98690825f6039c214926346
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e89ba0ba92c604139ee57f9fa8e9433f0f4a5bfc514d9e2740f9014800fb5a25
[INFO] running `Command { std: "docker" "start" "-a" "e89ba0ba92c604139ee57f9fa8e9433f0f4a5bfc514d9e2740f9014800fb5a25", 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 0.33s
[INFO] running `Command { std: "docker" "inspect" "e89ba0ba92c604139ee57f9fa8e9433f0f4a5bfc514d9e2740f9014800fb5a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e89ba0ba92c604139ee57f9fa8e9433f0f4a5bfc514d9e2740f9014800fb5a25", kill_on_drop: false }`
[INFO] [stdout] e89ba0ba92c604139ee57f9fa8e9433f0f4a5bfc514d9e2740f9014800fb5a25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 67ba06cfa3c0ba2f6fe38008de88677e6de4d2afd6ec56e231a4ea912580e517
[INFO] running `Command { std: "docker" "start" "-a" "67ba06cfa3c0ba2f6fe38008de88677e6de4d2afd6ec56e231a4ea912580e517", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 7.68s
[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" "67ba06cfa3c0ba2f6fe38008de88677e6de4d2afd6ec56e231a4ea912580e517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67ba06cfa3c0ba2f6fe38008de88677e6de4d2afd6ec56e231a4ea912580e517", kill_on_drop: false }`
[INFO] [stdout] 67ba06cfa3c0ba2f6fe38008de88677e6de4d2afd6ec56e231a4ea912580e517