Dec 18 05:47:57.727 INFO checking Qwertee/Kopier against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 05:47:57.727 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/Qwertee/Kopier:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 05:47:58.220 INFO [stdout] 8ed2666593deadb91cd1350019de8e01e32ac87339d5349bfa5a80432adc974b
Dec 18 05:47:58.226 INFO running `"docker" "start" "-a" "8ed2666593deadb91cd1350019de8e01e32ac87339d5349bfa5a80432adc974b"`
Dec 18 05:47:59.909 INFO [stderr]     Checking kopier v0.1.0 (/opt/crater/workdir)
Dec 18 05:48:00.332 INFO [stderr] warning: variable does not need to be mutable
Dec 18 05:48:00.332 INFO [stderr]   --> src/main.rs:22:9
Dec 18 05:48:00.332 INFO [stderr]    |
Dec 18 05:48:00.332 INFO [stderr] 22 |     let mut dest_file = try!(File::create(dest_string));
Dec 18 05:48:00.332 INFO [stderr]    |         ----^^^^^^^^^
Dec 18 05:48:00.332 INFO [stderr]    |         |
Dec 18 05:48:00.332 INFO [stderr]    |         help: remove this `mut`
Dec 18 05:48:00.332 INFO [stderr]    |
Dec 18 05:48:00.332 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 05:48:00.332 INFO [stderr] 
Dec 18 05:48:00.340 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 05:48:00.340 INFO [stderr]   --> src/main.rs:32:5
Dec 18 05:48:00.340 INFO [stderr]    |
Dec 18 05:48:00.340 INFO [stderr] 32 |     f.write_all(data.as_bytes());
Dec 18 05:48:00.340 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 05:48:00.340 INFO [stderr]    |
Dec 18 05:48:00.340 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 05:48:00.340 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 05:48:00.340 INFO [stderr] 
Dec 18 05:48:00.371 INFO [stderr] warning: variable does not need to be mutable
Dec 18 05:48:00.371 INFO [stderr]   --> src/main.rs:22:9
Dec 18 05:48:00.371 INFO [stderr]    |
Dec 18 05:48:00.371 INFO [stderr] 22 |     let mut dest_file = try!(File::create(dest_string));
Dec 18 05:48:00.371 INFO [stderr]    |         ----^^^^^^^^^
Dec 18 05:48:00.371 INFO [stderr]    |         |
Dec 18 05:48:00.371 INFO [stderr]    |         help: remove this `mut`
Dec 18 05:48:00.376 INFO [stderr]    |
Dec 18 05:48:00.376 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 05:48:00.376 INFO [stderr] 
Dec 18 05:48:00.380 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 05:48:00.380 INFO [stderr]   --> src/main.rs:32:5
Dec 18 05:48:00.380 INFO [stderr]    |
Dec 18 05:48:00.380 INFO [stderr] 32 |     f.write_all(data.as_bytes());
Dec 18 05:48:00.380 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 05:48:00.380 INFO [stderr]    |
Dec 18 05:48:00.380 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 05:48:00.388 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 05:48:00.388 INFO [stderr] 
Dec 18 05:48:00.410 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
Dec 18 05:48:00.957 INFO running `"docker" "inspect" "8ed2666593deadb91cd1350019de8e01e32ac87339d5349bfa5a80432adc974b"`
Dec 18 05:48:01.231 INFO running `"docker" "rm" "-f" "8ed2666593deadb91cd1350019de8e01e32ac87339d5349bfa5a80432adc974b"`
Dec 18 05:48:01.532 INFO [stdout] 8ed2666593deadb91cd1350019de8e01e32ac87339d5349bfa5a80432adc974b