Nov 28 12:39:24.670 INFO checking KuabeM/working-time-calculator against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 12:39:24.670 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-1/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 28 12:39:25.096 INFO [stdout] 989d003f7f1df6e1071a43a722807191ee4c679323840543f0c68d5c8d3a54ae
Nov 28 12:39:25.098 INFO running `"docker" "start" "-a" "989d003f7f1df6e1071a43a722807191ee4c679323840543f0c68d5c8d3a54ae"`
Nov 28 12:39:26.535 INFO [stderr] usermod: no changes
Nov 28 12:39:26.660 INFO [stderr]     Checking working-time-calc v0.1.0 (/source)
Nov 28 12:39:27.736 INFO [stderr] warning: value assigned to `content` is never read
Nov 28 12:39:27.737 INFO [stderr]    --> src/main.rs:117:13
Nov 28 12:39:27.737 INFO [stderr]     |
Nov 28 12:39:27.737 INFO [stderr] 117 |     let mut content = String::new();
Nov 28 12:39:27.738 INFO [stderr]     |             ^^^^^^^
Nov 28 12:39:27.738 INFO [stderr]     |
Nov 28 12:39:27.738 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Nov 28 12:39:27.738 INFO [stderr] 
Nov 28 12:39:27.788 INFO [stderr] warning: variable does not need to be mutable
Nov 28 12:39:27.788 INFO [stderr]    --> src/main.rs:108:9
Nov 28 12:39:27.788 INFO [stderr]     |
Nov 28 12:39:27.788 INFO [stderr] 108 |     let mut content_opt = match read_file_to_string( &file_name) {
Nov 28 12:39:27.788 INFO [stderr]     |         ----^^^^^^^^^^^
Nov 28 12:39:27.788 INFO [stderr]     |         |
Nov 28 12:39:27.788 INFO [stderr]     |         help: remove this `mut`
Nov 28 12:39:27.788 INFO [stderr]     |
Nov 28 12:39:27.788 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 12:39:27.788 INFO [stderr] 
Nov 28 12:39:28.060 INFO [stderr] warning: value assigned to `content` is never read
Nov 28 12:39:28.060 INFO [stderr]    --> src/main.rs:117:13
Nov 28 12:39:28.060 INFO [stderr]     |
Nov 28 12:39:28.060 INFO [stderr] 117 |     let mut content = String::new();
Nov 28 12:39:28.060 INFO [stderr]     |             ^^^^^^^
Nov 28 12:39:28.060 INFO [stderr]     |
Nov 28 12:39:28.060 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Nov 28 12:39:28.060 INFO [stderr] 
Nov 28 12:39:28.092 INFO [stderr] warning: variable does not need to be mutable
Nov 28 12:39:28.092 INFO [stderr]    --> src/main.rs:108:9
Nov 28 12:39:28.092 INFO [stderr]     |
Nov 28 12:39:28.092 INFO [stderr] 108 |     let mut content_opt = match read_file_to_string( &file_name) {
Nov 28 12:39:28.092 INFO [stderr]     |         ----^^^^^^^^^^^
Nov 28 12:39:28.092 INFO [stderr]     |         |
Nov 28 12:39:28.092 INFO [stderr]     |         help: remove this `mut`
Nov 28 12:39:28.092 INFO [stderr]     |
Nov 28 12:39:28.092 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 12:39:28.092 INFO [stderr] 
Nov 28 12:39:28.140 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
Nov 28 12:39:28.156 INFO [stderr] su: No module specific data is present
Nov 28 12:39:28.826 INFO running `"docker" "inspect" "989d003f7f1df6e1071a43a722807191ee4c679323840543f0c68d5c8d3a54ae"`
Nov 28 12:39:29.172 INFO running `"docker" "rm" "-f" "989d003f7f1df6e1071a43a722807191ee4c679323840543f0c68d5c8d3a54ae"`
Nov 28 12:39:29.566 INFO [stdout] 989d003f7f1df6e1071a43a722807191ee4c679323840543f0c68d5c8d3a54ae