Dec 05 10:11:37.468 INFO checking multimap-0.4.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 10:11:37.468 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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"`
Dec 05 10:11:37.708 INFO [stdout] e408dd68f334f55351a068d953b01227220db2ccd3d8d8a20c46c8aec82d1c65
Dec 05 10:11:37.710 INFO running `"docker" "start" "-a" "e408dd68f334f55351a068d953b01227220db2ccd3d8d8a20c46c8aec82d1c65"`
Dec 05 10:11:38.159 INFO [stderr] usermod: no changes
Dec 05 10:11:38.198 INFO [stderr]     Checking multimap v0.4.0 (/source)
Dec 05 10:11:38.787 INFO [stderr] warning: variable does not need to be mutable
Dec 05 10:11:38.787 INFO [stderr]    --> src/lib.rs:249:36
Dec 05 10:11:38.787 INFO [stderr]     |
Dec 05 10:11:38.787 INFO [stderr] 249 |         self.inner.get_mut(k).map(|mut v| v.get_mut(0).unwrap())
Dec 05 10:11:38.787 INFO [stderr]     |                                    ----^
Dec 05 10:11:38.787 INFO [stderr]     |                                    |
Dec 05 10:11:38.787 INFO [stderr]     |                                    help: remove this `mut`
Dec 05 10:11:38.787 INFO [stderr]     |
Dec 05 10:11:38.787 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 10:11:38.787 INFO [stderr] 
Dec 05 10:11:38.790 INFO [stderr] warning: variable does not need to be mutable
Dec 05 10:11:38.790 INFO [stderr]    --> src/lib.rs:590:18
Dec 05 10:11:38.790 INFO [stderr]     |
Dec 05 10:11:38.790 INFO [stderr] 590 |     fn into_iter(mut self) -> IterAllMut<'a, K, Vec<V>> {
Dec 05 10:11:38.790 INFO [stderr]     |                  ----^^^^
Dec 05 10:11:38.790 INFO [stderr]     |                  |
Dec 05 10:11:38.790 INFO [stderr]     |                  help: remove this `mut`
Dec 05 10:11:38.790 INFO [stderr] 
Dec 05 10:11:39.270 INFO [stderr] warning: variable does not need to be mutable
Dec 05 10:11:39.270 INFO [stderr]    --> src/lib.rs:249:36
Dec 05 10:11:39.270 INFO [stderr]     |
Dec 05 10:11:39.270 INFO [stderr] 249 |         self.inner.get_mut(k).map(|mut v| v.get_mut(0).unwrap())
Dec 05 10:11:39.270 INFO [stderr]     |                                    ----^
Dec 05 10:11:39.270 INFO [stderr]     |                                    |
Dec 05 10:11:39.270 INFO [stderr]     |                                    help: remove this `mut`
Dec 05 10:11:39.270 INFO [stderr]     |
Dec 05 10:11:39.270 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 10:11:39.270 INFO [stderr] 
Dec 05 10:11:39.272 INFO [stderr] warning: variable does not need to be mutable
Dec 05 10:11:39.272 INFO [stderr]    --> src/lib.rs:590:18
Dec 05 10:11:39.272 INFO [stderr]     |
Dec 05 10:11:39.272 INFO [stderr] 590 |     fn into_iter(mut self) -> IterAllMut<'a, K, Vec<V>> {
Dec 05 10:11:39.272 INFO [stderr]     |                  ----^^^^
Dec 05 10:11:39.272 INFO [stderr]     |                  |
Dec 05 10:11:39.272 INFO [stderr]     |                  help: remove this `mut`
Dec 05 10:11:39.272 INFO [stderr] 
Dec 05 10:11:39.344 INFO [stderr] warning: variable does not need to be mutable
Dec 05 10:11:39.344 INFO [stderr]     --> src/lib.rs:1112:17
Dec 05 10:11:39.344 INFO [stderr]      |
Dec 05 10:11:39.344 INFO [stderr] 1112 |             let mut v = m.entry(1).or_insert(43);
Dec 05 10:11:39.344 INFO [stderr]      |                 ----^
Dec 05 10:11:39.344 INFO [stderr]      |                 |
Dec 05 10:11:39.344 INFO [stderr]      |                 help: remove this `mut`
Dec 05 10:11:39.344 INFO [stderr] 
Dec 05 10:11:39.349 INFO [stderr] warning: variable does not need to be mutable
Dec 05 10:11:39.349 INFO [stderr]     --> src/lib.rs:1128:17
Dec 05 10:11:39.349 INFO [stderr]      |
Dec 05 10:11:39.349 INFO [stderr] 1128 |             let mut v = m.entry(1).or_insert_vec(vec![43]);
Dec 05 10:11:39.349 INFO [stderr]      |                 ----^
Dec 05 10:11:39.349 INFO [stderr]      |                 |
Dec 05 10:11:39.349 INFO [stderr]      |                 help: remove this `mut`
Dec 05 10:11:39.349 INFO [stderr] 
Dec 05 10:11:39.393 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
Dec 05 10:11:39.396 INFO [stderr] su: No module specific data is present
Dec 05 10:11:39.632 INFO running `"docker" "inspect" "e408dd68f334f55351a068d953b01227220db2ccd3d8d8a20c46c8aec82d1c65"`
Dec 05 10:11:39.718 INFO running `"docker" "rm" "-f" "e408dd68f334f55351a068d953b01227220db2ccd3d8d8a20c46c8aec82d1c65"`
Dec 05 10:11:39.832 INFO [stdout] e408dd68f334f55351a068d953b01227220db2ccd3d8d8a20c46c8aec82d1c65