[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-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/lightdiscord/sudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/lightdiscord/sudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lightdiscord/sudoku" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/lightdiscord/sudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/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#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lightdiscord/sudoku on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-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-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/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-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/lightdiscord/sudoku/Cargo.toml
[INFO] crate lightdiscord/sudoku already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking lightdiscord/sudoku against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/lightdiscord/sudoku:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2647ef44aa501e3431f2be25b667e3c080a353c94986d7f42951f52b216959d8
[INFO] running `"docker" "start" "-a" "2647ef44aa501e3431f2be25b667e3c080a353c94986d7f42951f52b216959d8"`
[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 4.68s
[INFO] running `"docker" "inspect" "2647ef44aa501e3431f2be25b667e3c080a353c94986d7f42951f52b216959d8"`
[INFO] running `"docker" "rm" "-f" "2647ef44aa501e3431f2be25b667e3c080a353c94986d7f42951f52b216959d8"`
[INFO] [stdout] 2647ef44aa501e3431f2be25b667e3c080a353c94986d7f42951f52b216959d8