Dec 12 10:10:17.690 INFO checking pem-iterator-0.2.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 10:10:17.690 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 10:10:17.970 INFO [stdout] 4f808ec004eeca0729a6545d18f7c1db9e746a640a406267e213390bbd355e93
Dec 12 10:10:17.972 INFO running `"docker" "start" "-a" "4f808ec004eeca0729a6545d18f7c1db9e746a640a406267e213390bbd355e93"`
Dec 12 10:10:18.584 INFO [stderr] usermod: no changes
Dec 12 10:10:18.672 INFO [stderr]     Checking pem-iterator v0.2.0 (/source)
Dec 12 10:10:18.674 INFO [stderr]     Checking pem v0.4.1
Dec 12 10:10:26.392 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:10:26.392 INFO [stderr]    --> benches/bench.rs:201:9
Dec 12 10:10:26.392 INFO [stderr]     |
Dec 12 10:10:26.392 INFO [stderr] 201 |     let mut label_buf = String::new();
Dec 12 10:10:26.393 INFO [stderr]     |         ----^^^^^^^^^
Dec 12 10:10:26.393 INFO [stderr]     |         |
Dec 12 10:10:26.393 INFO [stderr]     |         help: remove this `mut`
Dec 12 10:10:26.393 INFO [stderr]     |
Dec 12 10:10:26.393 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 10:10:26.393 INFO [stderr] 
Dec 12 10:10:26.394 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:10:26.394 INFO [stderr]    --> benches/bench.rs:242:9
Dec 12 10:10:26.394 INFO [stderr]     |
Dec 12 10:10:26.394 INFO [stderr] 242 |     let mut label_buf = String::new();
Dec 12 10:10:26.395 INFO [stderr]     |         ----^^^^^^^^^
Dec 12 10:10:26.395 INFO [stderr]     |         |
Dec 12 10:10:26.395 INFO [stderr]     |         help: remove this `mut`
Dec 12 10:10:26.395 INFO [stderr] 
Dec 12 10:10:26.395 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:10:26.395 INFO [stderr]    --> benches/bench.rs:285:9
Dec 12 10:10:26.395 INFO [stderr]     |
Dec 12 10:10:26.395 INFO [stderr] 285 |     let mut label_buf = String::new();
Dec 12 10:10:26.395 INFO [stderr]     |         ----^^^^^^^^^
Dec 12 10:10:26.395 INFO [stderr]     |         |
Dec 12 10:10:26.395 INFO [stderr]     |         help: remove this `mut`
Dec 12 10:10:26.395 INFO [stderr] 
Dec 12 10:10:26.395 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:10:26.396 INFO [stderr]    --> benches/bench.rs:326:9
Dec 12 10:10:26.396 INFO [stderr]     |
Dec 12 10:10:26.396 INFO [stderr] 326 |     let mut label_buf = String::new();
Dec 12 10:10:26.396 INFO [stderr]     |         ----^^^^^^^^^
Dec 12 10:10:26.396 INFO [stderr]     |         |
Dec 12 10:10:26.396 INFO [stderr]     |         help: remove this `mut`
Dec 12 10:10:26.396 INFO [stderr] 
Dec 12 10:10:26.480 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.86s
Dec 12 10:10:26.485 INFO [stderr] su: No module specific data is present
Dec 12 10:10:27.776 INFO running `"docker" "inspect" "4f808ec004eeca0729a6545d18f7c1db9e746a640a406267e213390bbd355e93"`
Dec 12 10:10:28.154 INFO running `"docker" "rm" "-f" "4f808ec004eeca0729a6545d18f7c1db9e746a640a406267e213390bbd355e93"`
Dec 12 10:10:28.516 INFO [stdout] 4f808ec004eeca0729a6545d18f7c1db9e746a640a406267e213390bbd355e93