[INFO] updating cached repository MicroJoe/rmatrix
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MicroJoe/rmatrix
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MicroJoe/rmatrix" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/MicroJoe/rmatrix"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/MicroJoe/rmatrix'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MicroJoe/rmatrix" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/MicroJoe/rmatrix"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/MicroJoe/rmatrix'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 52506714448a41de35353162c64de33266acce43
[INFO] sha for GitHub repo MicroJoe/rmatrix: 52506714448a41de35353162c64de33266acce43
[INFO] validating manifest of MicroJoe/rmatrix 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 MicroJoe/rmatrix 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 MicroJoe/rmatrix
[INFO] finished frobbing MicroJoe/rmatrix
[INFO] frobbed toml for MicroJoe/rmatrix written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/MicroJoe/rmatrix/Cargo.toml
[INFO] started frobbing MicroJoe/rmatrix
[INFO] finished frobbing MicroJoe/rmatrix
[INFO] frobbed toml for MicroJoe/rmatrix written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/MicroJoe/rmatrix/Cargo.toml
[INFO] crate MicroJoe/rmatrix 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] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking MicroJoe/rmatrix against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-0/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/MicroJoe/rmatrix:/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] 5334b138ab5d475391ca7a77303cdda824e5480a1c9b2eedb5c556c5052d1037
[INFO] running `"docker" "start" "-a" "5334b138ab5d475391ca7a77303cdda824e5480a1c9b2eedb5c556c5052d1037"`
[INFO] [stderr]     Checking rmatrix v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `id`
[INFO] [stderr]   --> src/matrix.rs:63:1
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn id(w: usize) -> Matrix {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "5334b138ab5d475391ca7a77303cdda824e5480a1c9b2eedb5c556c5052d1037"`
[INFO] running `"docker" "rm" "-f" "5334b138ab5d475391ca7a77303cdda824e5480a1c9b2eedb5c556c5052d1037"`
[INFO] [stdout] 5334b138ab5d475391ca7a77303cdda824e5480a1c9b2eedb5c556c5052d1037