Oct 13 03:56:25.190 INFO checking KuabeM/working-time-calculator against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 03:56:25.190 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 13 03:56:25.610 INFO blam! 4bf142b513b23d15c1a36e087fdab3b31b19ef4ac7058317737088a777f4f813
Oct 13 03:56:25.617 INFO running `"docker" "start" "-a" "4bf142b513b23d15c1a36e087fdab3b31b19ef4ac7058317737088a777f4f813"`
Oct 13 03:56:27.095 INFO kablam! usermod: no changes
Oct 13 03:56:27.196 INFO kablam!     Checking working-time-calc v0.1.0 (/source)
Oct 13 03:56:28.272 INFO kablam! warning: value assigned to `content` is never read
Oct 13 03:56:28.272 INFO kablam!    --> src/main.rs:117:13
Oct 13 03:56:28.272 INFO kablam!     |
Oct 13 03:56:28.272 INFO kablam! 117 |     let mut content = String::new();
Oct 13 03:56:28.272 INFO kablam!     |             ^^^^^^^
Oct 13 03:56:28.272 INFO kablam!     |
Oct 13 03:56:28.272 INFO kablam!     = note: #[warn(unused_assignments)] on by default
Oct 13 03:56:28.272 INFO kablam! 
Oct 13 03:56:28.288 INFO kablam! warning: variable does not need to be mutable
Oct 13 03:56:28.288 INFO kablam!    --> src/main.rs:108:9
Oct 13 03:56:28.288 INFO kablam!     |
Oct 13 03:56:28.288 INFO kablam! 108 |     let mut content_opt = match read_file_to_string( &file_name) {
Oct 13 03:56:28.288 INFO kablam!     |         ----^^^^^^^^^^^
Oct 13 03:56:28.288 INFO kablam!     |         |
Oct 13 03:56:28.288 INFO kablam!     |         help: remove this `mut`
Oct 13 03:56:28.288 INFO kablam!     |
Oct 13 03:56:28.288 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 13 03:56:28.288 INFO kablam! 
Oct 13 03:56:28.476 INFO kablam! warning: value assigned to `content` is never read
Oct 13 03:56:28.476 INFO kablam!    --> src/main.rs:117:13
Oct 13 03:56:28.476 INFO kablam!     |
Oct 13 03:56:28.476 INFO kablam! 117 |     let mut content = String::new();
Oct 13 03:56:28.476 INFO kablam!     |             ^^^^^^^
Oct 13 03:56:28.476 INFO kablam!     |
Oct 13 03:56:28.476 INFO kablam!     = note: #[warn(unused_assignments)] on by default
Oct 13 03:56:28.476 INFO kablam! 
Oct 13 03:56:28.488 INFO kablam! warning: variable does not need to be mutable
Oct 13 03:56:28.488 INFO kablam!    --> src/main.rs:108:9
Oct 13 03:56:28.488 INFO kablam!     |
Oct 13 03:56:28.488 INFO kablam! 108 |     let mut content_opt = match read_file_to_string( &file_name) {
Oct 13 03:56:28.488 INFO kablam!     |         ----^^^^^^^^^^^
Oct 13 03:56:28.488 INFO kablam!     |         |
Oct 13 03:56:28.488 INFO kablam!     |         help: remove this `mut`
Oct 13 03:56:28.488 INFO kablam!     |
Oct 13 03:56:28.488 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 13 03:56:28.488 INFO kablam! 
Oct 13 03:56:28.545 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
Oct 13 03:56:28.552 INFO kablam! su: No module specific data is present
Oct 13 03:56:29.602 INFO running `"docker" "rm" "-f" "4bf142b513b23d15c1a36e087fdab3b31b19ef4ac7058317737088a777f4f813"`
Oct 13 03:56:29.928 INFO blam! 4bf142b513b23d15c1a36e087fdab3b31b19ef4ac7058317737088a777f4f813