Dec 05 11:33:56.191 INFO checking jec-rccow-0.1.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 11:33:56.191 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 11:33:56.386 INFO [stdout] 12fb62e7f624f6fe55df26d0eff40935ab73737dae3b9bad3606050573f13c50
Dec 05 11:33:56.393 INFO running `"docker" "start" "-a" "12fb62e7f624f6fe55df26d0eff40935ab73737dae3b9bad3606050573f13c50"`
Dec 05 11:33:56.839 INFO [stderr] usermod: no changes
Dec 05 11:33:56.870 INFO [stderr]     Checking jec-rccow v0.1.0 (/source)
Dec 05 11:33:57.544 INFO [stderr] warning: variable does not need to be mutable
Dec 05 11:33:57.545 INFO [stderr]   --> src/lib.rs:73:13
Dec 05 11:33:57.545 INFO [stderr]    |
Dec 05 11:33:57.545 INFO [stderr] 73 |         let mut a = RcCow::new(5i32);
Dec 05 11:33:57.545 INFO [stderr]    |             ----^
Dec 05 11:33:57.545 INFO [stderr]    |             |
Dec 05 11:33:57.545 INFO [stderr]    |             help: remove this `mut`
Dec 05 11:33:57.545 INFO [stderr]    |
Dec 05 11:33:57.545 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 11:33:57.545 INFO [stderr] 
Dec 05 11:33:57.545 INFO [stderr] warning: variable does not need to be mutable
Dec 05 11:33:57.545 INFO [stderr]   --> src/lib.rs:77:13
Dec 05 11:33:57.545 INFO [stderr]    |
Dec 05 11:33:57.545 INFO [stderr] 77 |         let mut c = b.clone();
Dec 05 11:33:57.545 INFO [stderr]    |             ----^
Dec 05 11:33:57.545 INFO [stderr]    |             |
Dec 05 11:33:57.545 INFO [stderr]    |             help: remove this `mut`
Dec 05 11:33:57.545 INFO [stderr] 
Dec 05 11:33:57.556 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
Dec 05 11:33:57.559 INFO [stderr] su: No module specific data is present
Dec 05 11:33:57.854 INFO running `"docker" "inspect" "12fb62e7f624f6fe55df26d0eff40935ab73737dae3b9bad3606050573f13c50"`
Dec 05 11:33:57.973 INFO running `"docker" "rm" "-f" "12fb62e7f624f6fe55df26d0eff40935ab73737dae3b9bad3606050573f13c50"`
Dec 05 11:33:58.071 INFO [stdout] 12fb62e7f624f6fe55df26d0eff40935ab73737dae3b9bad3606050573f13c50