Dec 19 08:51:20.766 INFO checking sikinmettugi/wordfreq-rs against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 08:51:20.766 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 08:51:21.044 INFO [stdout] a00203133d8c12de109c52e37b21f2d82f9669a2448c5c86be4bd58155919bf1
Dec 19 08:51:21.046 INFO running `"docker" "start" "-a" "a00203133d8c12de109c52e37b21f2d82f9669a2448c5c86be4bd58155919bf1"`
Dec 19 08:51:21.964 INFO [stderr]     Checking wordfreq-rs v0.1.0 (/opt/crater/workdir)
Dec 19 08:51:22.156 INFO [stderr] warning: struct is never constructed: `WordCount`
Dec 19 08:51:22.156 INFO [stderr]   --> src/main.rs:13:1
Dec 19 08:51:22.156 INFO [stderr]    |
Dec 19 08:51:22.156 INFO [stderr] 13 | struct WordCount {
Dec 19 08:51:22.156 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 19 08:51:22.156 INFO [stderr]    |
Dec 19 08:51:22.156 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 08:51:22.156 INFO [stderr] 
Dec 19 08:51:22.156 INFO [stderr] warning: method is never used: `get_count`
Dec 19 08:51:22.156 INFO [stderr]   --> src/main.rs:19:5
Dec 19 08:51:22.156 INFO [stderr]    |
Dec 19 08:51:22.156 INFO [stderr] 19 |     fn get_count(&self) -> u32 {
Dec 19 08:51:22.156 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:51:22.156 INFO [stderr] 
Dec 19 08:51:22.156 INFO [stderr] warning: method is never used: `increment`
Dec 19 08:51:22.156 INFO [stderr]   --> src/main.rs:23:5
Dec 19 08:51:22.156 INFO [stderr]    |
Dec 19 08:51:22.156 INFO [stderr] 23 |     fn increment(&mut self) {
Dec 19 08:51:22.156 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:51:22.156 INFO [stderr] 
Dec 19 08:51:22.209 INFO [stderr] warning: struct is never constructed: `WordCount`
Dec 19 08:51:22.209 INFO [stderr]   --> src/main.rs:13:1
Dec 19 08:51:22.209 INFO [stderr]    |
Dec 19 08:51:22.209 INFO [stderr] 13 | struct WordCount {
Dec 19 08:51:22.209 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 19 08:51:22.209 INFO [stderr]    |
Dec 19 08:51:22.209 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 08:51:22.209 INFO [stderr] 
Dec 19 08:51:22.209 INFO [stderr] warning: method is never used: `get_count`
Dec 19 08:51:22.209 INFO [stderr]   --> src/main.rs:19:5
Dec 19 08:51:22.209 INFO [stderr]    |
Dec 19 08:51:22.209 INFO [stderr] 19 |     fn get_count(&self) -> u32 {
Dec 19 08:51:22.209 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:51:22.209 INFO [stderr] 
Dec 19 08:51:22.209 INFO [stderr] warning: method is never used: `increment`
Dec 19 08:51:22.209 INFO [stderr]   --> src/main.rs:23:5
Dec 19 08:51:22.209 INFO [stderr]    |
Dec 19 08:51:22.209 INFO [stderr] 23 |     fn increment(&mut self) {
Dec 19 08:51:22.209 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:51:22.209 INFO [stderr] 
Dec 19 08:51:22.224 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
Dec 19 08:51:22.583 INFO running `"docker" "inspect" "a00203133d8c12de109c52e37b21f2d82f9669a2448c5c86be4bd58155919bf1"`
Dec 19 08:51:22.747 INFO running `"docker" "rm" "-f" "a00203133d8c12de109c52e37b21f2d82f9669a2448c5c86be4bd58155919bf1"`
Dec 19 08:51:22.866 INFO [stdout] a00203133d8c12de109c52e37b21f2d82f9669a2448c5c86be4bd58155919bf1