Nov 30 16:08:29.825 INFO checking rusty-santa-0.1.0 against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 16:08:29.825 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-6/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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 30 16:08:30.292 INFO [stdout] bf8325b52f676d4ede4125fe70bb25a4ddd0678910208c06af1a442d76677d0b
Nov 30 16:08:30.296 INFO running `"docker" "start" "-a" "bf8325b52f676d4ede4125fe70bb25a4ddd0678910208c06af1a442d76677d0b"`
Nov 30 16:08:31.164 INFO [stderr] usermod: no changes
Nov 30 16:08:31.244 INFO [stderr]     Checking rusty-santa v0.1.0 (/source)
Nov 30 16:08:32.088 INFO [stderr] warning: method is never used: `get`
Nov 30 16:08:32.088 INFO [stderr]   --> src/lib.rs:64:5
Nov 30 16:08:32.088 INFO [stderr]    |
Nov 30 16:08:32.088 INFO [stderr] 64 |     pub fn get(&self, x: &str, y: &str) -> bool {
Nov 30 16:08:32.088 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 16:08:32.088 INFO [stderr]    |
Nov 30 16:08:32.088 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 16:08:32.088 INFO [stderr] 
Nov 30 16:08:32.088 INFO [stderr] warning: method is never used: `size`
Nov 30 16:08:32.088 INFO [stderr]    --> src/lib.rs:103:5
Nov 30 16:08:32.088 INFO [stderr]     |
Nov 30 16:08:32.088 INFO [stderr] 103 |     pub fn size(&self) -> usize {
Nov 30 16:08:32.088 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 16:08:32.088 INFO [stderr] 
Nov 30 16:08:32.273 INFO [stderr] warning: unused variable: `i`
Nov 30 16:08:32.273 INFO [stderr]    --> src/lib.rs:357:13
Nov 30 16:08:32.273 INFO [stderr]     |
Nov 30 16:08:32.273 INFO [stderr] 357 |         for i in 0..1000 {
Nov 30 16:08:32.273 INFO [stderr]     |             ^ help: consider using `_i` instead
Nov 30 16:08:32.273 INFO [stderr]     |
Nov 30 16:08:32.273 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 30 16:08:32.273 INFO [stderr] 
Nov 30 16:08:32.308 INFO [stderr] warning: variable does not need to be mutable
Nov 30 16:08:32.308 INFO [stderr]    --> src/lib.rs:279:13
Nov 30 16:08:32.308 INFO [stderr]     |
Nov 30 16:08:32.308 INFO [stderr] 279 |         let mut matrix = Matrix::new(keys);
Nov 30 16:08:32.308 INFO [stderr]     |             ----^^^^^^
Nov 30 16:08:32.308 INFO [stderr]     |             |
Nov 30 16:08:32.308 INFO [stderr]     |             help: remove this `mut`
Nov 30 16:08:32.308 INFO [stderr]     |
Nov 30 16:08:32.308 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 16:08:32.308 INFO [stderr] 
Nov 30 16:08:32.320 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 16:08:32.320 INFO [stderr]    --> src/lib.rs:358:13
Nov 30 16:08:32.320 INFO [stderr]     |
Nov 30 16:08:32.320 INFO [stderr] 358 |             group.assign();
Nov 30 16:08:32.320 INFO [stderr]     |             ^^^^^^^^^^^^^^^
Nov 30 16:08:32.320 INFO [stderr]     |
Nov 30 16:08:32.320 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 16:08:32.320 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 16:08:32.320 INFO [stderr] 
Nov 30 16:08:33.340 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
Nov 30 16:08:33.340 INFO [stderr] su: No module specific data is present
Nov 30 16:08:33.956 INFO running `"docker" "inspect" "bf8325b52f676d4ede4125fe70bb25a4ddd0678910208c06af1a442d76677d0b"`
Nov 30 16:08:34.232 INFO running `"docker" "rm" "-f" "bf8325b52f676d4ede4125fe70bb25a4ddd0678910208c06af1a442d76677d0b"`
Nov 30 16:08:34.565 INFO [stdout] bf8325b52f676d4ede4125fe70bb25a4ddd0678910208c06af1a442d76677d0b