Dec 12 07:52:14.079 INFO checking sea-canal-0.3.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 07:52:14.079 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 07:52:14.496 INFO [stdout] ad1a0bcffb1045bd97c866976343bbf4b04e2d98e4ee76b3961861310a156fbd
Dec 12 07:52:14.504 INFO running `"docker" "start" "-a" "ad1a0bcffb1045bd97c866976343bbf4b04e2d98e4ee76b3961861310a156fbd"`
Dec 12 07:52:15.310 INFO [stderr] usermod: no changes
Dec 12 07:52:15.360 INFO [stderr]     Checking sea-canal v0.3.0 (/source)
Dec 12 07:52:16.055 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:52:16.055 INFO [stderr]   --> src/pattern.rs:68:19
Dec 12 07:52:16.055 INFO [stderr]    |
Dec 12 07:52:16.055 INFO [stderr] 68 |     fn fmt(&self, mut fmt: &mut Formatter) -> Result<(), Error> {
Dec 12 07:52:16.055 INFO [stderr]    |                   ----^^^
Dec 12 07:52:16.055 INFO [stderr]    |                   |
Dec 12 07:52:16.056 INFO [stderr]    |                   help: remove this `mut`
Dec 12 07:52:16.056 INFO [stderr]    |
Dec 12 07:52:16.056 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 07:52:16.056 INFO [stderr] 
Dec 12 07:52:16.072 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:52:16.072 INFO [stderr]    --> src/pattern.rs:160:19
Dec 12 07:52:16.072 INFO [stderr]     |
Dec 12 07:52:16.072 INFO [stderr] 160 |     fn fmt(&self, mut fmt: &mut Formatter) -> Result<(), Error> {
Dec 12 07:52:16.072 INFO [stderr]     |                   ----^^^
Dec 12 07:52:16.072 INFO [stderr]     |                   |
Dec 12 07:52:16.072 INFO [stderr]     |                   help: remove this `mut`
Dec 12 07:52:16.072 INFO [stderr] 
Dec 12 07:52:16.386 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:52:16.386 INFO [stderr]   --> src/pattern.rs:68:19
Dec 12 07:52:16.386 INFO [stderr]    |
Dec 12 07:52:16.386 INFO [stderr] 68 |     fn fmt(&self, mut fmt: &mut Formatter) -> Result<(), Error> {
Dec 12 07:52:16.386 INFO [stderr]    |                   ----^^^
Dec 12 07:52:16.386 INFO [stderr]    |                   |
Dec 12 07:52:16.386 INFO [stderr]    |                   help: remove this `mut`
Dec 12 07:52:16.389 INFO [stderr]    |
Dec 12 07:52:16.389 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 07:52:16.389 INFO [stderr] 
Dec 12 07:52:16.389 INFO [stderr] warning: variable does not need to be mutable
Dec 12 07:52:16.389 INFO [stderr]    --> src/pattern.rs:160:19
Dec 12 07:52:16.389 INFO [stderr]     |
Dec 12 07:52:16.389 INFO [stderr] 160 |     fn fmt(&self, mut fmt: &mut Formatter) -> Result<(), Error> {
Dec 12 07:52:16.389 INFO [stderr]     |                   ----^^^
Dec 12 07:52:16.389 INFO [stderr]     |                   |
Dec 12 07:52:16.389 INFO [stderr]     |                   help: remove this `mut`
Dec 12 07:52:16.389 INFO [stderr] 
Dec 12 07:52:17.148 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
Dec 12 07:52:17.151 INFO [stderr] su: No module specific data is present
Dec 12 07:52:17.681 INFO running `"docker" "inspect" "ad1a0bcffb1045bd97c866976343bbf4b04e2d98e4ee76b3961861310a156fbd"`
Dec 12 07:52:17.784 INFO running `"docker" "rm" "-f" "ad1a0bcffb1045bd97c866976343bbf4b04e2d98e4ee76b3961861310a156fbd"`
Dec 12 07:52:17.919 INFO [stdout] ad1a0bcffb1045bd97c866976343bbf4b04e2d98e4ee76b3961861310a156fbd