Dec 17 11:56:53.819 INFO checking wilcoxky/rust-hw04 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 11:56:53.819 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/wilcoxky/rust-hw04:/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 11:56:54.034 INFO [stdout] 70dc7c6e750aa384a45b583486d89e439494c6180aceafca8e9bbdb6fca75e2f
Dec 17 11:56:54.042 INFO running `"docker" "start" "-a" "70dc7c6e750aa384a45b583486d89e439494c6180aceafca8e9bbdb6fca75e2f"`
Dec 17 11:56:54.900 INFO [stderr]     Checking hw04 v0.1.0 (/opt/crater/workdir)
Dec 17 11:56:55.376 INFO [stderr] warning: unused variable: `result`
Dec 17 11:56:55.377 INFO [stderr]   --> src/main.rs:27:13
Dec 17 11:56:55.377 INFO [stderr]    |
Dec 17 11:56:55.377 INFO [stderr] 27 |         let result = evaluate_line(&mut stack, &buffer);
Dec 17 11:56:55.378 INFO [stderr]    |             ^^^^^^ help: consider using `_result` instead
Dec 17 11:56:55.378 INFO [stderr]    |
Dec 17 11:56:55.378 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 11:56:55.378 INFO [stderr] 
Dec 17 11:56:55.408 INFO [stderr] warning: unused variable: `result`
Dec 17 11:56:55.408 INFO [stderr]   --> src/main.rs:27:13
Dec 17 11:56:55.408 INFO [stderr]    |
Dec 17 11:56:55.408 INFO [stderr] 27 |         let result = evaluate_line(&mut stack, &buffer);
Dec 17 11:56:55.408 INFO [stderr]    |             ^^^^^^ help: consider using `_result` instead
Dec 17 11:56:55.408 INFO [stderr]    |
Dec 17 11:56:55.408 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 11:56:55.408 INFO [stderr] 
Dec 17 11:56:55.428 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 11:56:55.428 INFO [stderr]    --> src/rpn.rs:124:21
Dec 17 11:56:55.428 INFO [stderr]     |
Dec 17 11:56:55.428 INFO [stderr] 124 |                     self.push(n);
Dec 17 11:56:55.428 INFO [stderr]     |                     ^^^^^^^^^^^^^
Dec 17 11:56:55.428 INFO [stderr]     |
Dec 17 11:56:55.429 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 11:56:55.429 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 11:56:55.429 INFO [stderr] 
Dec 17 11:56:55.429 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 11:56:55.429 INFO [stderr]    --> src/rpn.rs:133:21
Dec 17 11:56:55.429 INFO [stderr]     |
Dec 17 11:56:55.429 INFO [stderr] 133 |                     self.push(first.unwrap());
Dec 17 11:56:55.429 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:56:55.429 INFO [stderr]     |
Dec 17 11:56:55.429 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 11:56:55.429 INFO [stderr] 
Dec 17 11:56:55.489 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 11:56:55.489 INFO [stderr]    --> src/rpn.rs:124:21
Dec 17 11:56:55.489 INFO [stderr]     |
Dec 17 11:56:55.489 INFO [stderr] 124 |                     self.push(n);
Dec 17 11:56:55.489 INFO [stderr]     |                     ^^^^^^^^^^^^^
Dec 17 11:56:55.489 INFO [stderr]     |
Dec 17 11:56:55.489 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 11:56:55.489 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 11:56:55.489 INFO [stderr] 
Dec 17 11:56:55.489 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 11:56:55.489 INFO [stderr]    --> src/rpn.rs:133:21
Dec 17 11:56:55.489 INFO [stderr]     |
Dec 17 11:56:55.489 INFO [stderr] 133 |                     self.push(first.unwrap());
Dec 17 11:56:55.489 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:56:55.489 INFO [stderr]     |
Dec 17 11:56:55.489 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 11:56:55.489 INFO [stderr] 
Dec 17 11:56:55.515 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Dec 17 11:56:56.968 INFO running `"docker" "inspect" "70dc7c6e750aa384a45b583486d89e439494c6180aceafca8e9bbdb6fca75e2f"`
Dec 17 11:56:57.274 INFO running `"docker" "rm" "-f" "70dc7c6e750aa384a45b583486d89e439494c6180aceafca8e9bbdb6fca75e2f"`
Dec 17 11:56:57.497 INFO [stdout] 70dc7c6e750aa384a45b583486d89e439494c6180aceafca8e9bbdb6fca75e2f