Dec 18 11:40:12.426 INFO checking rusty-santa-0.1.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 11:40:12.427 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/rusty-santa/0.1.0:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 11:40:12.833 INFO [stdout] f163cfe01b14662c59d4688c362d513220001c121bb1f784c4e8575e1a422d74
Dec 18 11:40:12.833 INFO running `"docker" "start" "-a" "f163cfe01b14662c59d4688c362d513220001c121bb1f784c4e8575e1a422d74"`
Dec 18 11:40:13.824 INFO [stderr]     Checking rusty-santa v0.1.0 (/opt/crater/workdir)
Dec 18 11:40:14.305 INFO [stderr] warning: method is never used: `get`
Dec 18 11:40:14.305 INFO [stderr]   --> src/lib.rs:64:5
Dec 18 11:40:14.305 INFO [stderr]    |
Dec 18 11:40:14.305 INFO [stderr] 64 |     pub fn get(&self, x: &str, y: &str) -> bool {
Dec 18 11:40:14.305 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 11:40:14.305 INFO [stderr]    |
Dec 18 11:40:14.305 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 11:40:14.305 INFO [stderr] 
Dec 18 11:40:14.305 INFO [stderr] warning: method is never used: `size`
Dec 18 11:40:14.305 INFO [stderr]    --> src/lib.rs:103:5
Dec 18 11:40:14.305 INFO [stderr]     |
Dec 18 11:40:14.305 INFO [stderr] 103 |     pub fn size(&self) -> usize {
Dec 18 11:40:14.305 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 11:40:14.305 INFO [stderr] 
Dec 18 11:40:14.470 INFO [stderr] warning: unused variable: `i`
Dec 18 11:40:14.470 INFO [stderr]    --> src/lib.rs:357:13
Dec 18 11:40:14.470 INFO [stderr]     |
Dec 18 11:40:14.470 INFO [stderr] 357 |         for i in 0..1000 {
Dec 18 11:40:14.470 INFO [stderr]     |             ^ help: consider using `_i` instead
Dec 18 11:40:14.470 INFO [stderr]     |
Dec 18 11:40:14.470 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 11:40:14.470 INFO [stderr] 
Dec 18 11:40:14.508 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:40:14.508 INFO [stderr]    --> src/lib.rs:279:13
Dec 18 11:40:14.508 INFO [stderr]     |
Dec 18 11:40:14.508 INFO [stderr] 279 |         let mut matrix = Matrix::new(keys);
Dec 18 11:40:14.508 INFO [stderr]     |             ----^^^^^^
Dec 18 11:40:14.508 INFO [stderr]     |             |
Dec 18 11:40:14.508 INFO [stderr]     |             help: remove this `mut`
Dec 18 11:40:14.508 INFO [stderr]     |
Dec 18 11:40:14.508 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 11:40:14.508 INFO [stderr] 
Dec 18 11:40:14.513 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 11:40:14.513 INFO [stderr]    --> src/lib.rs:358:13
Dec 18 11:40:14.513 INFO [stderr]     |
Dec 18 11:40:14.513 INFO [stderr] 358 |             group.assign();
Dec 18 11:40:14.513 INFO [stderr]     |             ^^^^^^^^^^^^^^^
Dec 18 11:40:14.513 INFO [stderr]     |
Dec 18 11:40:14.514 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 11:40:14.514 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 11:40:14.514 INFO [stderr] 
Dec 18 11:40:14.816 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
Dec 18 11:40:15.454 INFO running `"docker" "inspect" "f163cfe01b14662c59d4688c362d513220001c121bb1f784c4e8575e1a422d74"`
Dec 18 11:40:15.754 INFO running `"docker" "rm" "-f" "f163cfe01b14662c59d4688c362d513220001c121bb1f784c4e8575e1a422d74"`
Dec 18 11:40:16.040 INFO [stdout] f163cfe01b14662c59d4688c362d513220001c121bb1f784c4e8575e1a422d74