Dec 19 05:32:08.706 INFO checking wilcoxky/rust-hw04 against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:32:08.707 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:32:09.258 INFO [stdout] a8e8186de0b379708ea92d8b28fb5633125f5ad88e2690e6b69464f0b8278874
Dec 19 05:32:09.260 INFO running `"docker" "start" "-a" "a8e8186de0b379708ea92d8b28fb5633125f5ad88e2690e6b69464f0b8278874"`
Dec 19 05:32:10.672 INFO [stderr]     Checking libc v0.2.31
Dec 19 05:32:11.700 INFO [stderr]     Checking rand v0.3.16
Dec 19 05:32:13.010 INFO [stderr]     Checking hw04 v0.1.0 (/opt/crater/workdir)
Dec 19 05:32:13.316 INFO [stderr] warning: unused variable: `result`
Dec 19 05:32:13.316 INFO [stderr]   --> src/main.rs:27:13
Dec 19 05:32:13.316 INFO [stderr]    |
Dec 19 05:32:13.316 INFO [stderr] 27 |         let result = evaluate_line(&mut stack, &buffer);
Dec 19 05:32:13.316 INFO [stderr]    |             ^^^^^^ help: consider using `_result` instead
Dec 19 05:32:13.316 INFO [stderr]    |
Dec 19 05:32:13.316 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:32:13.316 INFO [stderr] 
Dec 19 05:32:13.348 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:32:13.348 INFO [stderr]    --> src/rpn.rs:124:21
Dec 19 05:32:13.348 INFO [stderr]     |
Dec 19 05:32:13.348 INFO [stderr] 124 |                     self.push(n);
Dec 19 05:32:13.348 INFO [stderr]     |                     ^^^^^^^^^^^^^
Dec 19 05:32:13.348 INFO [stderr]     |
Dec 19 05:32:13.348 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 05:32:13.348 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:32:13.348 INFO [stderr] 
Dec 19 05:32:13.348 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:32:13.348 INFO [stderr]    --> src/rpn.rs:133:21
Dec 19 05:32:13.348 INFO [stderr]     |
Dec 19 05:32:13.348 INFO [stderr] 133 |                     self.push(first.unwrap());
Dec 19 05:32:13.348 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:32:13.348 INFO [stderr]     |
Dec 19 05:32:13.348 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:32:13.348 INFO [stderr] 
Dec 19 05:32:13.348 INFO [stderr] warning: unused variable: `result`
Dec 19 05:32:13.348 INFO [stderr]   --> src/main.rs:27:13
Dec 19 05:32:13.348 INFO [stderr]    |
Dec 19 05:32:13.348 INFO [stderr] 27 |         let result = evaluate_line(&mut stack, &buffer);
Dec 19 05:32:13.348 INFO [stderr]    |             ^^^^^^ help: consider using `_result` instead
Dec 19 05:32:13.348 INFO [stderr]    |
Dec 19 05:32:13.349 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:32:13.349 INFO [stderr] 
Dec 19 05:32:13.416 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:32:13.416 INFO [stderr]    --> src/rpn.rs:124:21
Dec 19 05:32:13.416 INFO [stderr]     |
Dec 19 05:32:13.416 INFO [stderr] 124 |                     self.push(n);
Dec 19 05:32:13.416 INFO [stderr]     |                     ^^^^^^^^^^^^^
Dec 19 05:32:13.416 INFO [stderr]     |
Dec 19 05:32:13.416 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 05:32:13.416 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:32:13.416 INFO [stderr] 
Dec 19 05:32:13.416 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:32:13.416 INFO [stderr]    --> src/rpn.rs:133:21
Dec 19 05:32:13.416 INFO [stderr]     |
Dec 19 05:32:13.416 INFO [stderr] 133 |                     self.push(first.unwrap());
Dec 19 05:32:13.416 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:32:13.416 INFO [stderr]     |
Dec 19 05:32:13.416 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:32:13.416 INFO [stderr] 
Dec 19 05:32:13.441 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.80s
Dec 19 05:32:14.068 INFO running `"docker" "inspect" "a8e8186de0b379708ea92d8b28fb5633125f5ad88e2690e6b69464f0b8278874"`
Dec 19 05:32:14.360 INFO running `"docker" "rm" "-f" "a8e8186de0b379708ea92d8b28fb5633125f5ad88e2690e6b69464f0b8278874"`
Dec 19 05:32:14.565 INFO [stdout] a8e8186de0b379708ea92d8b28fb5633125f5ad88e2690e6b69464f0b8278874