Dec 05 09:14:19.946 INFO checking pem-iterator-0.2.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 09:14:19.946 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 09:14:20.431 INFO [stdout] 2c71af10abf5bd6b5536b7be2c0848d8fe8ee928892f3fbf077db652f8aed8e9
Dec 05 09:14:20.433 INFO running `"docker" "start" "-a" "2c71af10abf5bd6b5536b7be2c0848d8fe8ee928892f3fbf077db652f8aed8e9"`
Dec 05 09:14:22.401 INFO [stderr] usermod: no changes
Dec 05 09:14:22.515 INFO [stderr]     Checking pem-iterator v0.2.0 (/source)
Dec 05 09:14:22.523 INFO [stderr]     Checking pem v0.4.1
Dec 05 09:14:29.899 INFO [stderr] warning: variable does not need to be mutable
Dec 05 09:14:29.899 INFO [stderr]    --> benches/bench.rs:201:9
Dec 05 09:14:29.899 INFO [stderr]     |
Dec 05 09:14:29.899 INFO [stderr] 201 |     let mut label_buf = String::new();
Dec 05 09:14:29.899 INFO [stderr]     |         ----^^^^^^^^^
Dec 05 09:14:29.899 INFO [stderr]     |         |
Dec 05 09:14:29.899 INFO [stderr]     |         help: remove this `mut`
Dec 05 09:14:29.899 INFO [stderr]     |
Dec 05 09:14:29.899 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 09:14:29.899 INFO [stderr] 
Dec 05 09:14:29.899 INFO [stderr] warning: variable does not need to be mutable
Dec 05 09:14:29.899 INFO [stderr]    --> benches/bench.rs:242:9
Dec 05 09:14:29.899 INFO [stderr]     |
Dec 05 09:14:29.899 INFO [stderr] 242 |     let mut label_buf = String::new();
Dec 05 09:14:29.899 INFO [stderr]     |         ----^^^^^^^^^
Dec 05 09:14:29.899 INFO [stderr]     |         |
Dec 05 09:14:29.899 INFO [stderr]     |         help: remove this `mut`
Dec 05 09:14:29.899 INFO [stderr] 
Dec 05 09:14:29.899 INFO [stderr] warning: variable does not need to be mutable
Dec 05 09:14:29.899 INFO [stderr]    --> benches/bench.rs:285:9
Dec 05 09:14:29.899 INFO [stderr]     |
Dec 05 09:14:29.899 INFO [stderr] 285 |     let mut label_buf = String::new();
Dec 05 09:14:29.899 INFO [stderr]     |         ----^^^^^^^^^
Dec 05 09:14:29.899 INFO [stderr]     |         |
Dec 05 09:14:29.899 INFO [stderr]     |         help: remove this `mut`
Dec 05 09:14:29.899 INFO [stderr] 
Dec 05 09:14:29.899 INFO [stderr] warning: variable does not need to be mutable
Dec 05 09:14:29.899 INFO [stderr]    --> benches/bench.rs:326:9
Dec 05 09:14:29.899 INFO [stderr]     |
Dec 05 09:14:29.899 INFO [stderr] 326 |     let mut label_buf = String::new();
Dec 05 09:14:29.899 INFO [stderr]     |         ----^^^^^^^^^
Dec 05 09:14:29.899 INFO [stderr]     |         |
Dec 05 09:14:29.899 INFO [stderr]     |         help: remove this `mut`
Dec 05 09:14:29.899 INFO [stderr] 
Dec 05 09:14:30.467 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.04s
Dec 05 09:14:30.471 INFO [stderr] su: No module specific data is present
Dec 05 09:14:31.223 INFO running `"docker" "inspect" "2c71af10abf5bd6b5536b7be2c0848d8fe8ee928892f3fbf077db652f8aed8e9"`
Dec 05 09:14:31.584 INFO running `"docker" "rm" "-f" "2c71af10abf5bd6b5536b7be2c0848d8fe8ee928892f3fbf077db652f8aed8e9"`
Dec 05 09:14:31.943 INFO [stdout] 2c71af10abf5bd6b5536b7be2c0848d8fe8ee928892f3fbf077db652f8aed8e9