Dec 11 09:32:49.518 INFO checking sikinmettugi/wordfreq-rs against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 09:32:49.518 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 11 09:32:49.725 INFO [stdout] 4cfee426d429c26bf480693149972618632ad41b70ab1c7eeb59cce1b195565d
Dec 11 09:32:49.730 INFO running `"docker" "start" "-a" "4cfee426d429c26bf480693149972618632ad41b70ab1c7eeb59cce1b195565d"`
Dec 11 09:32:50.421 INFO [stderr] usermod: no changes
Dec 11 09:32:50.480 INFO [stderr]     Checking wordfreq-rs v0.1.0 (/source)
Dec 11 09:32:50.757 INFO [stderr] warning: struct is never constructed: `WordCount`
Dec 11 09:32:50.757 INFO [stderr]   --> src/main.rs:13:1
Dec 11 09:32:50.757 INFO [stderr]    |
Dec 11 09:32:50.757 INFO [stderr] 13 | struct WordCount {
Dec 11 09:32:50.757 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 11 09:32:50.757 INFO [stderr]    |
Dec 11 09:32:50.757 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 09:32:50.757 INFO [stderr] 
Dec 11 09:32:50.757 INFO [stderr] warning: method is never used: `get_count`
Dec 11 09:32:50.757 INFO [stderr]   --> src/main.rs:19:5
Dec 11 09:32:50.757 INFO [stderr]    |
Dec 11 09:32:50.757 INFO [stderr] 19 |     fn get_count(&self) -> u32 {
Dec 11 09:32:50.757 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:32:50.757 INFO [stderr] 
Dec 11 09:32:50.757 INFO [stderr] warning: method is never used: `increment`
Dec 11 09:32:50.758 INFO [stderr]   --> src/main.rs:23:5
Dec 11 09:32:50.758 INFO [stderr]    |
Dec 11 09:32:50.758 INFO [stderr] 23 |     fn increment(&mut self) {
Dec 11 09:32:50.758 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:32:50.758 INFO [stderr] 
Dec 11 09:32:50.952 INFO [stderr] warning: struct is never constructed: `WordCount`
Dec 11 09:32:50.953 INFO [stderr]   --> src/main.rs:13:1
Dec 11 09:32:50.953 INFO [stderr]    |
Dec 11 09:32:50.953 INFO [stderr] 13 | struct WordCount {
Dec 11 09:32:50.953 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 11 09:32:50.954 INFO [stderr]    |
Dec 11 09:32:50.954 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 09:32:50.954 INFO [stderr] 
Dec 11 09:32:50.954 INFO [stderr] warning: method is never used: `get_count`
Dec 11 09:32:50.954 INFO [stderr]   --> src/main.rs:19:5
Dec 11 09:32:50.954 INFO [stderr]    |
Dec 11 09:32:50.954 INFO [stderr] 19 |     fn get_count(&self) -> u32 {
Dec 11 09:32:50.954 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:32:50.954 INFO [stderr] 
Dec 11 09:32:50.954 INFO [stderr] warning: method is never used: `increment`
Dec 11 09:32:50.954 INFO [stderr]   --> src/main.rs:23:5
Dec 11 09:32:50.954 INFO [stderr]    |
Dec 11 09:32:50.954 INFO [stderr] 23 |     fn increment(&mut self) {
Dec 11 09:32:50.954 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 09:32:50.954 INFO [stderr] 
Dec 11 09:32:50.967 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
Dec 11 09:32:50.969 INFO [stderr] su: No module specific data is present
Dec 11 09:32:51.361 INFO running `"docker" "inspect" "4cfee426d429c26bf480693149972618632ad41b70ab1c7eeb59cce1b195565d"`
Dec 11 09:32:51.570 INFO running `"docker" "rm" "-f" "4cfee426d429c26bf480693149972618632ad41b70ab1c7eeb59cce1b195565d"`
Dec 11 09:32:51.884 INFO [stdout] 4cfee426d429c26bf480693149972618632ad41b70ab1c7eeb59cce1b195565d