Nov 30 10:09:26.009 INFO checking KuabeM/working-time-calculator against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 10:09:26.009 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-6/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 30 10:09:26.400 INFO [stdout] 4c47afca4ea742d4dd9e217af3a5d7ae9fd041a1c91670618d6c9ec78cd18e9e
Nov 30 10:09:26.406 INFO running `"docker" "start" "-a" "4c47afca4ea742d4dd9e217af3a5d7ae9fd041a1c91670618d6c9ec78cd18e9e"`
Nov 30 10:09:27.656 INFO [stderr] usermod: no changes
Nov 30 10:09:27.748 INFO [stderr]     Checking working-time-calc v0.1.0 (/source)
Nov 30 10:09:29.000 INFO [stderr] warning: value assigned to `content` is never read
Nov 30 10:09:29.000 INFO [stderr]    --> src/main.rs:117:13
Nov 30 10:09:29.000 INFO [stderr]     |
Nov 30 10:09:29.000 INFO [stderr] 117 |     let mut content = String::new();
Nov 30 10:09:29.000 INFO [stderr]     |             ^^^^^^^
Nov 30 10:09:29.000 INFO [stderr]     |
Nov 30 10:09:29.000 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Nov 30 10:09:29.000 INFO [stderr] 
Nov 30 10:09:29.032 INFO [stderr] warning: variable does not need to be mutable
Nov 30 10:09:29.032 INFO [stderr]    --> src/main.rs:108:9
Nov 30 10:09:29.032 INFO [stderr]     |
Nov 30 10:09:29.032 INFO [stderr] 108 |     let mut content_opt = match read_file_to_string( &file_name) {
Nov 30 10:09:29.032 INFO [stderr]     |         ----^^^^^^^^^^^
Nov 30 10:09:29.032 INFO [stderr]     |         |
Nov 30 10:09:29.032 INFO [stderr]     |         help: remove this `mut`
Nov 30 10:09:29.032 INFO [stderr]     |
Nov 30 10:09:29.032 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 10:09:29.032 INFO [stderr] 
Nov 30 10:09:29.157 INFO [stderr] warning: value assigned to `content` is never read
Nov 30 10:09:29.157 INFO [stderr]    --> src/main.rs:117:13
Nov 30 10:09:29.157 INFO [stderr]     |
Nov 30 10:09:29.157 INFO [stderr] 117 |     let mut content = String::new();
Nov 30 10:09:29.157 INFO [stderr]     |             ^^^^^^^
Nov 30 10:09:29.157 INFO [stderr]     |
Nov 30 10:09:29.157 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Nov 30 10:09:29.157 INFO [stderr] 
Nov 30 10:09:29.180 INFO [stderr] warning: variable does not need to be mutable
Nov 30 10:09:29.180 INFO [stderr]    --> src/main.rs:108:9
Nov 30 10:09:29.180 INFO [stderr]     |
Nov 30 10:09:29.180 INFO [stderr] 108 |     let mut content_opt = match read_file_to_string( &file_name) {
Nov 30 10:09:29.180 INFO [stderr]     |         ----^^^^^^^^^^^
Nov 30 10:09:29.180 INFO [stderr]     |         |
Nov 30 10:09:29.180 INFO [stderr]     |         help: remove this `mut`
Nov 30 10:09:29.180 INFO [stderr]     |
Nov 30 10:09:29.180 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 10:09:29.180 INFO [stderr] 
Nov 30 10:09:29.223 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
Nov 30 10:09:29.229 INFO [stderr] su: No module specific data is present
Nov 30 10:09:29.812 INFO running `"docker" "inspect" "4c47afca4ea742d4dd9e217af3a5d7ae9fd041a1c91670618d6c9ec78cd18e9e"`
Nov 30 10:09:30.078 INFO running `"docker" "rm" "-f" "4c47afca4ea742d4dd9e217af3a5d7ae9fd041a1c91670618d6c9ec78cd18e9e"`
Nov 30 10:09:30.368 INFO [stdout] 4c47afca4ea742d4dd9e217af3a5d7ae9fd041a1c91670618d6c9ec78cd18e9e