Dec 11 21:25:26.802 INFO checking brson/coingrab against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 21:25:26.802 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 11 21:25:27.156 INFO [stdout] d11664b780c78b1319aa3bbddfa1eed3d0f06b9386780f83ec9455f0b8f86191
Dec 11 21:25:27.164 INFO running `"docker" "start" "-a" "d11664b780c78b1319aa3bbddfa1eed3d0f06b9386780f83ec9455f0b8f86191"`
Dec 11 21:25:28.212 INFO [stderr] usermod: no changes
Dec 11 21:25:28.460 INFO [stderr]     Checking utf-8 v0.6.0
Dec 11 21:25:28.460 INFO [stderr]     Checking fs2 v0.4.1
Dec 11 21:25:28.460 INFO [stderr]     Checking libflate v0.1.7
Dec 11 21:25:28.460 INFO [stderr]     Checking toml v0.4.1
Dec 11 21:25:28.460 INFO [stderr]     Checking tempdir v0.3.5
Dec 11 21:25:28.460 INFO [stderr]    Compiling string_cache_codegen v0.3.1
Dec 11 21:25:28.460 INFO [stderr]    Compiling serde_derive_internals v0.15.1
Dec 11 21:25:28.460 INFO [stderr]    Compiling html5ever v0.14.1
Dec 11 21:25:30.007 INFO [stderr]     Checking serde_urlencoded v0.5.1
Dec 11 21:25:30.208 INFO [stderr]     Checking env_logger v0.4.3
Dec 11 21:25:30.390 INFO [stderr]     Checking chrono v0.3.1
Dec 11 21:25:34.649 INFO [stderr]     Checking fancy_flocks v0.1.0 (/source/fancy_flocks)
Dec 11 21:25:35.843 INFO [stderr] warning: variable does not need to be mutable
Dec 11 21:25:35.843 INFO [stderr]    --> fancy_flocks/src/dirty_flock.rs:111:13
Dec 11 21:25:35.843 INFO [stderr]     |
Dec 11 21:25:35.843 INFO [stderr] 111 |         let mut file = file.deref_mut().as_mut().expect("locked file");
Dec 11 21:25:35.843 INFO [stderr]     |             ----^^^^
Dec 11 21:25:35.843 INFO [stderr]     |             |
Dec 11 21:25:35.843 INFO [stderr]     |             help: remove this `mut`
Dec 11 21:25:35.843 INFO [stderr]     |
Dec 11 21:25:35.843 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 21:25:35.843 INFO [stderr] 
Dec 11 21:25:35.847 INFO [stderr] warning: variable does not need to be mutable
Dec 11 21:25:35.847 INFO [stderr]    --> fancy_flocks/src/dirty_flock.rs:123:17
Dec 11 21:25:35.847 INFO [stderr]     |
Dec 11 21:25:35.847 INFO [stderr] 123 |             let mut file = file_.deref_mut().as_mut().expect("locked file");
Dec 11 21:25:35.847 INFO [stderr]     |                 ----^^^^
Dec 11 21:25:35.847 INFO [stderr]     |                 |
Dec 11 21:25:35.847 INFO [stderr]     |                 help: remove this `mut`
Dec 11 21:25:35.847 INFO [stderr] 
Dec 11 21:25:39.108 INFO [stderr]     Checking tendril v0.2.4
Dec 11 21:25:39.152 INFO [stderr]    Compiling string_cache v0.4.0
Dec 11 21:25:39.172 INFO [stderr]    Compiling html5ever-atoms v0.2.2
Dec 11 21:25:39.234 INFO [stderr]     Checking reqwest v0.6.2
Dec 11 21:25:39.784 INFO [stderr]    Compiling serde_derive v1.0.8
Dec 11 21:25:53.412 INFO [stderr]     Checking select v0.4.0
Dec 11 21:25:55.079 INFO [stderr]     Checking coingrab v0.1.0 (/source)
Dec 11 21:26:12.881 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.65s
Dec 11 21:26:12.895 INFO [stderr] su: No module specific data is present
Dec 11 21:26:14.272 INFO running `"docker" "inspect" "d11664b780c78b1319aa3bbddfa1eed3d0f06b9386780f83ec9455f0b8f86191"`
Dec 11 21:26:14.554 INFO running `"docker" "rm" "-f" "d11664b780c78b1319aa3bbddfa1eed3d0f06b9386780f83ec9455f0b8f86191"`
Dec 11 21:26:14.909 INFO [stdout] d11664b780c78b1319aa3bbddfa1eed3d0f06b9386780f83ec9455f0b8f86191