[INFO] updating cached repository r2p2/snake
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/r2p2/snake
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/r2p2/snake" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/r2p2/snake"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/r2p2/snake'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/r2p2/snake" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/r2p2/snake"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/r2p2/snake'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e2ed895fe515402c4ebef9c34784fa9d5e95b938
[INFO] sha for GitHub repo r2p2/snake: e2ed895fe515402c4ebef9c34784fa9d5e95b938
[INFO] validating manifest of r2p2/snake on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of r2p2/snake on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing r2p2/snake
[INFO] finished frobbing r2p2/snake
[INFO] frobbed toml for r2p2/snake written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/r2p2/snake/Cargo.toml
[INFO] started frobbing r2p2/snake
[INFO] finished frobbing r2p2/snake
[INFO] frobbed toml for r2p2/snake written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/r2p2/snake/Cargo.toml
[INFO] crate r2p2/snake already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking r2p2/snake against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/r2p2/snake:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 27111a2be8ce38f43c42be68f53f627c5d1d8b53534522a094c0ce2eebe5918c
[INFO] running `"docker" "start" "-a" "27111a2be8ce38f43c42be68f53f627c5d1d8b53534522a094c0ce2eebe5918c"`
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking gag v0.1.9
[INFO] [stderr]     Checking rustty v0.1.12
[INFO] [stderr]     Checking snake v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/snake_tui/ui.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |             let mut cell = canvas.get_mut(x as usize, y as usize).unwrap();
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/snake_tui/ui.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |             let mut cell = canvas.get_mut(x as usize, y as usize).unwrap();
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `"docker" "inspect" "27111a2be8ce38f43c42be68f53f627c5d1d8b53534522a094c0ce2eebe5918c"`
[INFO] running `"docker" "rm" "-f" "27111a2be8ce38f43c42be68f53f627c5d1d8b53534522a094c0ce2eebe5918c"`
[INFO] [stdout] 27111a2be8ce38f43c42be68f53f627c5d1d8b53534522a094c0ce2eebe5918c