Dec 17 15:26:57.449 INFO checking sikinmettugi/wordfreq-rs against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 15:26:57.449 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/sikinmettugi/wordfreq-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 15:26:58.136 INFO [stdout] 83e5c132e63fbc1b823b5c8333d964db6e578b51480dd17a7551d30f611cb64b
Dec 17 15:26:58.139 INFO running `"docker" "start" "-a" "83e5c132e63fbc1b823b5c8333d964db6e578b51480dd17a7551d30f611cb64b"`
Dec 17 15:27:00.056 INFO [stderr]     Checking wordfreq-rs v0.1.0 (/opt/crater/workdir)
Dec 17 15:27:00.273 INFO [stderr] warning: struct is never constructed: `WordCount`
Dec 17 15:27:00.273 INFO [stderr]   --> src/main.rs:13:1
Dec 17 15:27:00.273 INFO [stderr]    |
Dec 17 15:27:00.273 INFO [stderr] 13 | struct WordCount {
Dec 17 15:27:00.273 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 15:27:00.273 INFO [stderr]    |
Dec 17 15:27:00.273 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 15:27:00.273 INFO [stderr] 
Dec 17 15:27:00.273 INFO [stderr] warning: method is never used: `get_count`
Dec 17 15:27:00.273 INFO [stderr]   --> src/main.rs:19:5
Dec 17 15:27:00.273 INFO [stderr]    |
Dec 17 15:27:00.273 INFO [stderr] 19 |     fn get_count(&self) -> u32 {
Dec 17 15:27:00.273 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 15:27:00.273 INFO [stderr] 
Dec 17 15:27:00.273 INFO [stderr] warning: method is never used: `increment`
Dec 17 15:27:00.273 INFO [stderr]   --> src/main.rs:23:5
Dec 17 15:27:00.273 INFO [stderr]    |
Dec 17 15:27:00.273 INFO [stderr] 23 |     fn increment(&mut self) {
Dec 17 15:27:00.273 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 15:27:00.273 INFO [stderr] 
Dec 17 15:27:00.428 INFO [stderr] warning: struct is never constructed: `WordCount`
Dec 17 15:27:00.428 INFO [stderr]   --> src/main.rs:13:1
Dec 17 15:27:00.428 INFO [stderr]    |
Dec 17 15:27:00.428 INFO [stderr] 13 | struct WordCount {
Dec 17 15:27:00.428 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 15:27:00.428 INFO [stderr]    |
Dec 17 15:27:00.428 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 15:27:00.428 INFO [stderr] 
Dec 17 15:27:00.428 INFO [stderr] warning: method is never used: `get_count`
Dec 17 15:27:00.428 INFO [stderr]   --> src/main.rs:19:5
Dec 17 15:27:00.428 INFO [stderr]    |
Dec 17 15:27:00.428 INFO [stderr] 19 |     fn get_count(&self) -> u32 {
Dec 17 15:27:00.428 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 15:27:00.428 INFO [stderr] 
Dec 17 15:27:00.428 INFO [stderr] warning: method is never used: `increment`
Dec 17 15:27:00.428 INFO [stderr]   --> src/main.rs:23:5
Dec 17 15:27:00.428 INFO [stderr]    |
Dec 17 15:27:00.428 INFO [stderr] 23 |     fn increment(&mut self) {
Dec 17 15:27:00.428 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 15:27:00.428 INFO [stderr] 
Dec 17 15:27:00.477 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
Dec 17 15:27:01.328 INFO running `"docker" "inspect" "83e5c132e63fbc1b823b5c8333d964db6e578b51480dd17a7551d30f611cb64b"`
Dec 17 15:27:01.574 INFO running `"docker" "rm" "-f" "83e5c132e63fbc1b823b5c8333d964db6e578b51480dd17a7551d30f611cb64b"`
Dec 17 15:27:01.848 INFO [stdout] 83e5c132e63fbc1b823b5c8333d964db6e578b51480dd17a7551d30f611cb64b