[INFO] updating cached repository MattsPoche/Matrix-transformation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MattsPoche/Matrix-transformation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MattsPoche/Matrix-transformation" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/MattsPoche/Matrix-transformation"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/MattsPoche/Matrix-transformation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MattsPoche/Matrix-transformation" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/MattsPoche/Matrix-transformation"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/MattsPoche/Matrix-transformation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3643ab1e3986ac405588e77203f451f9bf186b11
[INFO] sha for GitHub repo MattsPoche/Matrix-transformation: 3643ab1e3986ac405588e77203f451f9bf186b11
[INFO] validating manifest of MattsPoche/Matrix-transformation on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of MattsPoche/Matrix-transformation on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing MattsPoche/Matrix-transformation
[INFO] finished frobbing MattsPoche/Matrix-transformation
[INFO] frobbed toml for MattsPoche/Matrix-transformation written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/MattsPoche/Matrix-transformation/Cargo.toml
[INFO] started frobbing MattsPoche/Matrix-transformation
[INFO] finished frobbing MattsPoche/Matrix-transformation
[INFO] frobbed toml for MattsPoche/Matrix-transformation written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/MattsPoche/Matrix-transformation/Cargo.toml
[INFO] crate MattsPoche/Matrix-transformation already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking MattsPoche/Matrix-transformation against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-2/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/MattsPoche/Matrix-transformation:/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b02c52f0a744412578448caad5960da3f3b98004d953bdac0cdfeabc4dddf825
[INFO] running `"docker" "start" "-a" "b02c52f0a744412578448caad5960da3f3b98004d953bdac0cdfeabc4dddf825"`
[INFO] [stderr]     Checking matrix_transformation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `y_ubound`
[INFO] [stderr]  --> src/main.rs:3:20
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let (x_ubound, y_ubound) = get_bounds(v);
[INFO] [stderr]   |                    ^^^^^^^^ help: consider prefixing with an underscore: `_y_ubound`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matricize`
[INFO] [stderr]   --> src/main.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn matricize(v: &Vec<(usize, usize)>) -> Vec<Vec<u16>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_matrix`
[INFO] [stderr]   --> src/main.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn print_matrix(m: &Vec<Vec<u16>>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y_ubound`
[INFO] [stderr]  --> src/main.rs:3:20
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let (x_ubound, y_ubound) = get_bounds(v);
[INFO] [stderr]   |                    ^^^^^^^^ help: consider prefixing with an underscore: `_y_ubound`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "b02c52f0a744412578448caad5960da3f3b98004d953bdac0cdfeabc4dddf825"`
[INFO] running `"docker" "rm" "-f" "b02c52f0a744412578448caad5960da3f3b98004d953bdac0cdfeabc4dddf825"`
[INFO] [stdout] b02c52f0a744412578448caad5960da3f3b98004d953bdac0cdfeabc4dddf825