Dec 12 17:23:26.511 INFO checking buffoon-0.5.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 17:23:26.511 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 17:23:26.761 INFO [stdout] 711032ec2bd5ce669fd394e2b2e06b3b0205675844bee05e1bdd429078e4ad24
Dec 12 17:23:26.763 INFO running `"docker" "start" "-a" "711032ec2bd5ce669fd394e2b2e06b3b0205675844bee05e1bdd429078e4ad24"`
Dec 12 17:23:27.171 INFO [stderr] usermod: no changes
Dec 12 17:23:27.196 INFO [stderr]     Checking buffoon v0.5.0 (/source)
Dec 12 17:23:28.028 INFO [stderr] warning: variable does not need to be mutable
Dec 12 17:23:28.028 INFO [stderr]    --> src/input_stream.rs:104:17
Dec 12 17:23:28.028 INFO [stderr]     |
Dec 12 17:23:28.028 INFO [stderr] 104 |             let mut buf = slice::from_raw_parts_mut(ret.as_mut_ptr(), len);
Dec 12 17:23:28.028 INFO [stderr]     |                 ----^^^
Dec 12 17:23:28.028 INFO [stderr]     |                 |
Dec 12 17:23:28.028 INFO [stderr]     |                 help: remove this `mut`
Dec 12 17:23:28.028 INFO [stderr]     |
Dec 12 17:23:28.028 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 17:23:28.028 INFO [stderr] 
Dec 12 17:23:28.361 INFO [stderr] warning: variable does not need to be mutable
Dec 12 17:23:28.361 INFO [stderr]    --> src/input_stream.rs:104:17
Dec 12 17:23:28.361 INFO [stderr]     |
Dec 12 17:23:28.361 INFO [stderr] 104 |             let mut buf = slice::from_raw_parts_mut(ret.as_mut_ptr(), len);
Dec 12 17:23:28.361 INFO [stderr]     |                 ----^^^
Dec 12 17:23:28.361 INFO [stderr]     |                 |
Dec 12 17:23:28.361 INFO [stderr]     |                 help: remove this `mut`
Dec 12 17:23:28.361 INFO [stderr]     |
Dec 12 17:23:28.361 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 17:23:28.361 INFO [stderr] 
Dec 12 17:23:28.451 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
Dec 12 17:23:28.453 INFO [stderr] su: No module specific data is present
Dec 12 17:23:29.303 INFO running `"docker" "inspect" "711032ec2bd5ce669fd394e2b2e06b3b0205675844bee05e1bdd429078e4ad24"`
Dec 12 17:23:29.494 INFO running `"docker" "rm" "-f" "711032ec2bd5ce669fd394e2b2e06b3b0205675844bee05e1bdd429078e4ad24"`
Dec 12 17:23:29.756 INFO [stdout] 711032ec2bd5ce669fd394e2b2e06b3b0205675844bee05e1bdd429078e4ad24