[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] checking brendanburkhart/mols against master#64b185eddaa1d7ddf5e0c024be23b9cbba6c1722 for pr-143929
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrendanburkhart%2Fmols" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[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-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/brendanburkhart/mols on toolchain 64b185eddaa1d7ddf5e0c024be23b9cbba6c1722
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/brendanburkhart/mols already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8d914e1d6dc535c6d4246bc987ecbbea0d8f7c0dc359ae8e6d7bc27ac79997f
[INFO] running `Command { std: "docker" "start" "-a" "b8d914e1d6dc535c6d4246bc987ecbbea0d8f7c0dc359ae8e6d7bc27ac79997f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8d914e1d6dc535c6d4246bc987ecbbea0d8f7c0dc359ae8e6d7bc27ac79997f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8d914e1d6dc535c6d4246bc987ecbbea0d8f7c0dc359ae8e6d7bc27ac79997f", kill_on_drop: false }`
[INFO] [stdout] b8d914e1d6dc535c6d4246bc987ecbbea0d8f7c0dc359ae8e6d7bc27ac79997f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bef7bb65da4de68677f1fd647cf1faccdf7e107225b830ae869c8fdc73632528
[INFO] running `Command { std: "docker" "start" "-a" "bef7bb65da4de68677f1fd647cf1faccdf7e107225b830ae869c8fdc73632528", kill_on_drop: false }`
[INFO] [stderr]     Checking mols v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `column_is_valid` and `is_latin` are never used
[INFO] [stdout]   --> src/latin_square.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Square {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] 32 |     fn column_is_valid(&self, column_index: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn is_latin(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `column_is_valid` and `is_latin` are never used
[INFO] [stdout]   --> src/latin_square.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Square {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] 32 |     fn column_is_valid(&self, column_index: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn is_latin(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "bef7bb65da4de68677f1fd647cf1faccdf7e107225b830ae869c8fdc73632528", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bef7bb65da4de68677f1fd647cf1faccdf7e107225b830ae869c8fdc73632528", kill_on_drop: false }`
[INFO] [stdout] bef7bb65da4de68677f1fd647cf1faccdf7e107225b830ae869c8fdc73632528