Dec 05 12:16:12.405 INFO checking handoff_counter-0.8.5 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 12:16:12.406 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 12:16:12.869 INFO [stdout] a31c7d79221efd055b7eefc42af4127c8401300b8398d5aeb1c9ca5e1e695f1b
Dec 05 12:16:12.872 INFO running `"docker" "start" "-a" "a31c7d79221efd055b7eefc42af4127c8401300b8398d5aeb1c9ca5e1e695f1b"`
Dec 05 12:16:14.027 INFO [stderr] usermod: no changes
Dec 05 12:16:14.099 INFO [stderr]     Checking handoff_counter v0.8.5 (/source)
Dec 05 12:16:14.983 INFO [stderr] warning: variable does not need to be mutable
Dec 05 12:16:14.983 INFO [stderr]   --> src/handoff_counter.rs:55:13
Dec 05 12:16:14.983 INFO [stderr]    |
Dec 05 12:16:14.983 INFO [stderr] 55 |         let mut v = self.vals.get_mut(&self.id).unwrap();
Dec 05 12:16:14.983 INFO [stderr]    |             ----^
Dec 05 12:16:14.983 INFO [stderr]    |             |
Dec 05 12:16:14.983 INFO [stderr]    |             help: remove this `mut`
Dec 05 12:16:14.983 INFO [stderr]    |
Dec 05 12:16:14.983 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 12:16:14.983 INFO [stderr] 
Dec 05 12:16:15.071 INFO [stderr] warning: variable does not need to be mutable
Dec 05 12:16:15.071 INFO [stderr]   --> src/handoff_counter.rs:55:13
Dec 05 12:16:15.071 INFO [stderr]    |
Dec 05 12:16:15.071 INFO [stderr] 55 |         let mut v = self.vals.get_mut(&self.id).unwrap();
Dec 05 12:16:15.071 INFO [stderr]    |             ----^
Dec 05 12:16:15.071 INFO [stderr]    |             |
Dec 05 12:16:15.071 INFO [stderr]    |             help: remove this `mut`
Dec 05 12:16:15.071 INFO [stderr]    |
Dec 05 12:16:15.071 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 12:16:15.071 INFO [stderr] 
Dec 05 12:16:16.111 INFO [stderr] warning: type alias is never used: `Env`
Dec 05 12:16:16.111 INFO [stderr]   --> src/bin/simulate.rs:14:1
Dec 05 12:16:16.111 INFO [stderr]    |
Dec 05 12:16:16.111 INFO [stderr] 14 | type Env<'a> = HashMap<&'a str, Cnt<'a>>;
Dec 05 12:16:16.111 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 12:16:16.111 INFO [stderr]    |
Dec 05 12:16:16.111 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 12:16:16.111 INFO [stderr] 
Dec 05 12:16:16.451 INFO [stderr] warning: type alias is never used: `Env`
Dec 05 12:16:16.451 INFO [stderr]   --> src/bin/simulate.rs:14:1
Dec 05 12:16:16.451 INFO [stderr]    |
Dec 05 12:16:16.451 INFO [stderr] 14 | type Env<'a> = HashMap<&'a str, Cnt<'a>>;
Dec 05 12:16:16.451 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 12:16:16.451 INFO [stderr]    |
Dec 05 12:16:16.451 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 12:16:16.451 INFO [stderr] 
Dec 05 12:16:16.499 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.44s
Dec 05 12:16:16.499 INFO [stderr] su: No module specific data is present
Dec 05 12:16:17.220 INFO running `"docker" "inspect" "a31c7d79221efd055b7eefc42af4127c8401300b8398d5aeb1c9ca5e1e695f1b"`
Dec 05 12:16:17.517 INFO running `"docker" "rm" "-f" "a31c7d79221efd055b7eefc42af4127c8401300b8398d5aeb1c9ca5e1e695f1b"`
Dec 05 12:16:17.791 INFO [stdout] a31c7d79221efd055b7eefc42af4127c8401300b8398d5aeb1c9ca5e1e695f1b