[INFO] updating cached repository lightdiscord/sudoku
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lightdiscord/sudoku
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lightdiscord/sudoku" "work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/lightdiscord/sudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/lightdiscord/sudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lightdiscord/sudoku" "work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/lightdiscord/sudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/lightdiscord/sudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3b93d3782e40265be30918e357e9514f400df74d
[INFO] sha for GitHub repo lightdiscord/sudoku: 3b93d3782e40265be30918e357e9514f400df74d
[INFO] validating manifest of lightdiscord/sudoku on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lightdiscord/sudoku on toolchain try#74092351c05ae61047b2be02024415546595e974
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lightdiscord/sudoku
[INFO] finished frobbing lightdiscord/sudoku
[INFO] frobbed toml for lightdiscord/sudoku written to work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/lightdiscord/sudoku/Cargo.toml
[INFO] started frobbing lightdiscord/sudoku
[INFO] finished frobbing lightdiscord/sudoku
[INFO] frobbed toml for lightdiscord/sudoku written to work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/lightdiscord/sudoku/Cargo.toml
[INFO] crate lightdiscord/sudoku already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking lightdiscord/sudoku against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60174
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-5/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/lightdiscord/sudoku:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5dfc9bfbf66fab9fa98262f251250f83525903948d3644d76798b1a5dfd05b5f
[INFO] running `"docker" "start" "-a" "5dfc9bfbf66fab9fa98262f251250f83525903948d3644d76798b1a5dfd05b5f"`
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking backtrace-sys v0.1.26
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.44s
[INFO] running `"docker" "inspect" "5dfc9bfbf66fab9fa98262f251250f83525903948d3644d76798b1a5dfd05b5f"`
[INFO] running `"docker" "rm" "-f" "5dfc9bfbf66fab9fa98262f251250f83525903948d3644d76798b1a5dfd05b5f"`
[INFO] [stdout] 5dfc9bfbf66fab9fa98262f251250f83525903948d3644d76798b1a5dfd05b5f