[INFO] updating cached repository Hammatt/maze-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Hammatt/maze-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Hammatt/maze-rs" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Hammatt/maze-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Hammatt/maze-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Hammatt/maze-rs" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Hammatt/maze-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Hammatt/maze-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ac9c368a83a7f3917bf19b00c3c7a3d994ef23cc
[INFO] sha for GitHub repo Hammatt/maze-rs: ac9c368a83a7f3917bf19b00c3c7a3d994ef23cc
[INFO] validating manifest of Hammatt/maze-rs on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Hammatt/maze-rs on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Hammatt/maze-rs
[INFO] finished frobbing Hammatt/maze-rs
[INFO] frobbed toml for Hammatt/maze-rs written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Hammatt/maze-rs/Cargo.toml
[INFO] started frobbing Hammatt/maze-rs
[INFO] finished frobbing Hammatt/maze-rs
[INFO] frobbed toml for Hammatt/maze-rs written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Hammatt/maze-rs/Cargo.toml
[INFO] crate Hammatt/maze-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Hammatt/maze-rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Hammatt/maze-rs against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-5/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Hammatt/maze-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6d50c9ac0a79ec54c5df566672ce7bdac7fc176f370394016a3899c4299957a4
[INFO] running `"docker" "start" "-a" "6d50c9ac0a79ec54c5df566672ce7bdac7fc176f370394016a3899c4299957a4"`
[INFO] [stderr]     Checking maze_rs v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `brute_force`
[INFO] [stderr]   --> src/solver.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / pub fn brute_force(maze: &Vec<Vec<bool>>, starting_cell: &(usize, usize), 
[INFO] [stderr] 8  | |                         goal_cell: &(usize, usize)) -> Vec<(usize, usize)>
[INFO] [stderr] 9  | | {
[INFO] [stderr] 10 | |     let mut visited: Vec<(usize, usize)> = Vec::new();
[INFO] [stderr] ...  |
[INFO] [stderr] 26 | |     visited
[INFO] [stderr] 27 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_all_neighbouring_cells`
[INFO] [stderr]   --> src/solver.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn get_all_neighbouring_cells(maze: &Vec<Vec<bool>>, cell: &(usize, usize)) -> Vec<(usize, usize)>
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "6d50c9ac0a79ec54c5df566672ce7bdac7fc176f370394016a3899c4299957a4"`
[INFO] running `"docker" "rm" "-f" "6d50c9ac0a79ec54c5df566672ce7bdac7fc176f370394016a3899c4299957a4"`
[INFO] [stdout] 6d50c9ac0a79ec54c5df566672ce7bdac7fc176f370394016a3899c4299957a4