Dec 05 00:28:54.648 INFO checking Qwertee/Kopier against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 00:28:54.648 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 00:28:55.144 INFO [stdout] 837ced2f06f8be5f181786a1e30c724db04d0e18fa333b17a8acda5ad10cc42d
Dec 05 00:28:55.147 INFO running `"docker" "start" "-a" "837ced2f06f8be5f181786a1e30c724db04d0e18fa333b17a8acda5ad10cc42d"`
Dec 05 00:28:56.507 INFO [stderr] usermod: no changes
Dec 05 00:28:56.561 INFO [stderr]     Checking kopier v0.1.0 (/source)
Dec 05 00:28:56.989 INFO [stderr] warning: variable does not need to be mutable
Dec 05 00:28:56.989 INFO [stderr]   --> src/main.rs:22:9
Dec 05 00:28:56.989 INFO [stderr]    |
Dec 05 00:28:56.989 INFO [stderr] 22 |     let mut dest_file = try!(File::create(dest_string));
Dec 05 00:28:56.989 INFO [stderr]    |         ----^^^^^^^^^
Dec 05 00:28:56.989 INFO [stderr]    |         |
Dec 05 00:28:56.989 INFO [stderr]    |         help: remove this `mut`
Dec 05 00:28:56.989 INFO [stderr]    |
Dec 05 00:28:56.989 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 00:28:56.989 INFO [stderr] 
Dec 05 00:28:56.991 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:28:56.991 INFO [stderr]   --> src/main.rs:32:5
Dec 05 00:28:56.991 INFO [stderr]    |
Dec 05 00:28:56.991 INFO [stderr] 32 |     f.write_all(data.as_bytes());
Dec 05 00:28:56.991 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:28:56.991 INFO [stderr]    |
Dec 05 00:28:56.991 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 00:28:56.991 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:28:56.991 INFO [stderr] 
Dec 05 00:28:57.258 INFO [stderr] warning: variable does not need to be mutable
Dec 05 00:28:57.258 INFO [stderr]   --> src/main.rs:22:9
Dec 05 00:28:57.258 INFO [stderr]    |
Dec 05 00:28:57.258 INFO [stderr] 22 |     let mut dest_file = try!(File::create(dest_string));
Dec 05 00:28:57.258 INFO [stderr]    |         ----^^^^^^^^^
Dec 05 00:28:57.258 INFO [stderr]    |         |
Dec 05 00:28:57.258 INFO [stderr]    |         help: remove this `mut`
Dec 05 00:28:57.259 INFO [stderr]    |
Dec 05 00:28:57.259 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 00:28:57.259 INFO [stderr] 
Dec 05 00:28:57.267 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:28:57.267 INFO [stderr]   --> src/main.rs:32:5
Dec 05 00:28:57.267 INFO [stderr]    |
Dec 05 00:28:57.267 INFO [stderr] 32 |     f.write_all(data.as_bytes());
Dec 05 00:28:57.267 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:28:57.267 INFO [stderr]    |
Dec 05 00:28:57.267 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 00:28:57.267 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:28:57.267 INFO [stderr] 
Dec 05 00:28:57.278 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
Dec 05 00:28:57.283 INFO [stderr] su: No module specific data is present
Dec 05 00:28:57.608 INFO running `"docker" "inspect" "837ced2f06f8be5f181786a1e30c724db04d0e18fa333b17a8acda5ad10cc42d"`
Dec 05 00:28:57.929 INFO running `"docker" "rm" "-f" "837ced2f06f8be5f181786a1e30c724db04d0e18fa333b17a8acda5ad10cc42d"`
Dec 05 00:28:58.211 INFO [stdout] 837ced2f06f8be5f181786a1e30c724db04d0e18fa333b17a8acda5ad10cc42d