Nov 28 18:39:59.390 INFO checking rusty-santa-0.1.0 against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 18:39:59.390 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 18:39:59.825 INFO [stdout] e135fe1c91d954076da55ffc5890a7d7689ac2e687e04c329452f72c40657fc3
Nov 28 18:39:59.827 INFO running `"docker" "start" "-a" "e135fe1c91d954076da55ffc5890a7d7689ac2e687e04c329452f72c40657fc3"`
Nov 28 18:40:01.464 INFO [stderr] usermod: no changes
Nov 28 18:40:01.644 INFO [stderr]     Checking rusty-santa v0.1.0 (/source)
Nov 28 18:40:02.970 INFO [stderr] warning: unused variable: `i`
Nov 28 18:40:02.970 INFO [stderr]    --> src/lib.rs:357:13
Nov 28 18:40:02.970 INFO [stderr]     |
Nov 28 18:40:02.970 INFO [stderr] 357 |         for i in 0..1000 {
Nov 28 18:40:02.970 INFO [stderr]     |             ^ help: consider using `_i` instead
Nov 28 18:40:02.980 INFO [stderr]     |
Nov 28 18:40:02.980 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 28 18:40:02.980 INFO [stderr] 
Nov 28 18:40:03.028 INFO [stderr] warning: variable does not need to be mutable
Nov 28 18:40:03.028 INFO [stderr]    --> src/lib.rs:279:13
Nov 28 18:40:03.028 INFO [stderr]     |
Nov 28 18:40:03.028 INFO [stderr] 279 |         let mut matrix = Matrix::new(keys);
Nov 28 18:40:03.028 INFO [stderr]     |             ----^^^^^^
Nov 28 18:40:03.028 INFO [stderr]     |             |
Nov 28 18:40:03.028 INFO [stderr]     |             help: remove this `mut`
Nov 28 18:40:03.028 INFO [stderr]     |
Nov 28 18:40:03.028 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 18:40:03.028 INFO [stderr] 
Nov 28 18:40:03.044 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 18:40:03.044 INFO [stderr]    --> src/lib.rs:358:13
Nov 28 18:40:03.044 INFO [stderr]     |
Nov 28 18:40:03.044 INFO [stderr] 358 |             group.assign();
Nov 28 18:40:03.044 INFO [stderr]     |             ^^^^^^^^^^^^^^^
Nov 28 18:40:03.044 INFO [stderr]     |
Nov 28 18:40:03.044 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 28 18:40:03.044 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 18:40:03.044 INFO [stderr] 
Nov 28 18:40:03.072 INFO [stderr] warning: method is never used: `get`
Nov 28 18:40:03.073 INFO [stderr]   --> src/lib.rs:64:5
Nov 28 18:40:03.073 INFO [stderr]    |
Nov 28 18:40:03.073 INFO [stderr] 64 |     pub fn get(&self, x: &str, y: &str) -> bool {
Nov 28 18:40:03.074 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 18:40:03.074 INFO [stderr]    |
Nov 28 18:40:03.074 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 18:40:03.074 INFO [stderr] 
Nov 28 18:40:03.075 INFO [stderr] warning: method is never used: `size`
Nov 28 18:40:03.075 INFO [stderr]    --> src/lib.rs:103:5
Nov 28 18:40:03.075 INFO [stderr]     |
Nov 28 18:40:03.076 INFO [stderr] 103 |     pub fn size(&self) -> usize {
Nov 28 18:40:03.076 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 18:40:03.076 INFO [stderr] 
Nov 28 18:40:04.346 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.83s
Nov 28 18:40:04.346 INFO [stderr] su: No module specific data is present
Nov 28 18:40:04.946 INFO running `"docker" "inspect" "e135fe1c91d954076da55ffc5890a7d7689ac2e687e04c329452f72c40657fc3"`
Nov 28 18:40:05.386 INFO running `"docker" "rm" "-f" "e135fe1c91d954076da55ffc5890a7d7689ac2e687e04c329452f72c40657fc3"`
Nov 28 18:40:05.755 INFO [stdout] e135fe1c91d954076da55ffc5890a7d7689ac2e687e04c329452f72c40657fc3