Dec 12 00:43:27.373 INFO checking Qwertee/Kopier against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 00:43:27.373 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 12 00:43:27.760 INFO [stdout] 54767184e7d76e909a779d1d428b8fd9905d5c829b416fba4ed4fce30413e3b4
Dec 12 00:43:27.768 INFO running `"docker" "start" "-a" "54767184e7d76e909a779d1d428b8fd9905d5c829b416fba4ed4fce30413e3b4"`
Dec 12 00:43:29.257 INFO [stderr] usermod: no changes
Dec 12 00:43:29.320 INFO [stderr]     Checking kopier v0.1.0 (/source)
Dec 12 00:43:29.888 INFO [stderr] warning: variable does not need to be mutable
Dec 12 00:43:29.888 INFO [stderr]   --> src/main.rs:22:9
Dec 12 00:43:29.888 INFO [stderr]    |
Dec 12 00:43:29.888 INFO [stderr] 22 |     let mut dest_file = try!(File::create(dest_string));
Dec 12 00:43:29.888 INFO [stderr]    |         ----^^^^^^^^^
Dec 12 00:43:29.888 INFO [stderr]    |         |
Dec 12 00:43:29.888 INFO [stderr]    |         help: remove this `mut`
Dec 12 00:43:29.888 INFO [stderr]    |
Dec 12 00:43:29.888 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 00:43:29.888 INFO [stderr] 
Dec 12 00:43:29.896 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 00:43:29.896 INFO [stderr]   --> src/main.rs:32:5
Dec 12 00:43:29.896 INFO [stderr]    |
Dec 12 00:43:29.896 INFO [stderr] 32 |     f.write_all(data.as_bytes());
Dec 12 00:43:29.896 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:43:29.896 INFO [stderr]    |
Dec 12 00:43:29.896 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 00:43:29.896 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 00:43:29.896 INFO [stderr] 
Dec 12 00:43:29.976 INFO [stderr] warning: variable does not need to be mutable
Dec 12 00:43:29.976 INFO [stderr]   --> src/main.rs:22:9
Dec 12 00:43:29.976 INFO [stderr]    |
Dec 12 00:43:29.976 INFO [stderr] 22 |     let mut dest_file = try!(File::create(dest_string));
Dec 12 00:43:29.976 INFO [stderr]    |         ----^^^^^^^^^
Dec 12 00:43:29.976 INFO [stderr]    |         |
Dec 12 00:43:29.976 INFO [stderr]    |         help: remove this `mut`
Dec 12 00:43:29.976 INFO [stderr]    |
Dec 12 00:43:29.976 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 00:43:29.976 INFO [stderr] 
Dec 12 00:43:29.988 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 00:43:29.988 INFO [stderr]   --> src/main.rs:32:5
Dec 12 00:43:29.988 INFO [stderr]    |
Dec 12 00:43:29.988 INFO [stderr] 32 |     f.write_all(data.as_bytes());
Dec 12 00:43:29.988 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:43:29.988 INFO [stderr]    |
Dec 12 00:43:29.988 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 00:43:29.988 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 00:43:29.988 INFO [stderr] 
Dec 12 00:43:30.020 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
Dec 12 00:43:30.029 INFO [stderr] su: No module specific data is present
Dec 12 00:43:30.690 INFO running `"docker" "inspect" "54767184e7d76e909a779d1d428b8fd9905d5c829b416fba4ed4fce30413e3b4"`
Dec 12 00:43:31.044 INFO running `"docker" "rm" "-f" "54767184e7d76e909a779d1d428b8fd9905d5c829b416fba4ed4fce30413e3b4"`
Dec 12 00:43:31.392 INFO [stdout] 54767184e7d76e909a779d1d428b8fd9905d5c829b416fba4ed4fce30413e3b4