Dec 11 21:25:25.355 INFO checking brson/coingrab against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 21:25:25.355 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 11 21:25:25.936 INFO [stdout] 359553461ff94d224fd381d591ec4088d6fa4449983a45e73bcb27a237ea17dc
Dec 11 21:25:25.944 INFO running `"docker" "start" "-a" "359553461ff94d224fd381d591ec4088d6fa4449983a45e73bcb27a237ea17dc"`
Dec 11 21:25:27.043 INFO [stderr] usermod: no changes
Dec 11 21:25:27.324 INFO [stderr]     Checking fs2 v0.4.1
Dec 11 21:25:27.328 INFO [stderr]     Checking tempdir v0.3.5
Dec 11 21:25:27.337 INFO [stderr]     Checking env_logger v0.4.3
Dec 11 21:25:27.338 INFO [stderr]     Checking chrono v0.3.1
Dec 11 21:25:27.338 INFO [stderr]     Checking reqwest v0.6.2
Dec 11 21:25:28.128 INFO [stderr]     Checking fancy_flocks v0.1.0 (/source/fancy_flocks)
Dec 11 21:25:28.788 INFO [stderr] warning: variable does not need to be mutable
Dec 11 21:25:28.788 INFO [stderr]    --> fancy_flocks/src/dirty_flock.rs:111:13
Dec 11 21:25:28.788 INFO [stderr]     |
Dec 11 21:25:28.788 INFO [stderr] 111 |         let mut file = file.deref_mut().as_mut().expect("locked file");
Dec 11 21:25:28.788 INFO [stderr]     |             ----^^^^
Dec 11 21:25:28.788 INFO [stderr]     |             |
Dec 11 21:25:28.789 INFO [stderr]     |             help: remove this `mut`
Dec 11 21:25:28.789 INFO [stderr]     |
Dec 11 21:25:28.789 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 21:25:28.789 INFO [stderr] 
Dec 11 21:25:28.792 INFO [stderr] warning: variable does not need to be mutable
Dec 11 21:25:28.792 INFO [stderr]    --> fancy_flocks/src/dirty_flock.rs:123:17
Dec 11 21:25:28.792 INFO [stderr]     |
Dec 11 21:25:28.792 INFO [stderr] 123 |             let mut file = file_.deref_mut().as_mut().expect("locked file");
Dec 11 21:25:28.792 INFO [stderr]     |                 ----^^^^
Dec 11 21:25:28.792 INFO [stderr]     |                 |
Dec 11 21:25:28.792 INFO [stderr]     |                 help: remove this `mut`
Dec 11 21:25:28.792 INFO [stderr] 
Dec 11 21:25:30.768 INFO [stderr]     Checking coingrab v0.1.0 (/source)
Dec 11 21:25:46.564 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.49s
Dec 11 21:25:46.580 INFO [stderr] su: No module specific data is present
Dec 11 21:25:47.218 INFO running `"docker" "inspect" "359553461ff94d224fd381d591ec4088d6fa4449983a45e73bcb27a237ea17dc"`
Dec 11 21:25:47.608 INFO running `"docker" "rm" "-f" "359553461ff94d224fd381d591ec4088d6fa4449983a45e73bcb27a237ea17dc"`
Dec 11 21:25:47.839 INFO [stdout] 359553461ff94d224fd381d591ec4088d6fa4449983a45e73bcb27a237ea17dc