[INFO] updating cached repository https://github.com/wilcoxky/rust-hw04
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2567a8394af35830fbaf522f223c6e485873bd3e
[INFO] testing wilcoxky/rust-hw04 against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilcoxky%2Frust-hw04" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wilcoxky/rust-hw04 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/wilcoxky/rust-hw04
[INFO] finished tweaking git repo https://github.com/wilcoxky/rust-hw04
[INFO] tweaked toml for git repo https://github.com/wilcoxky/rust-hw04 written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/wilcoxky/rust-hw04 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 827d81287a6084a6208db6fc5b23ef367fabecb011af9b094785ea6c2421a450
[INFO] running `"docker" "start" "-a" "827d81287a6084a6208db6fc5b23ef367fabecb011af9b094785ea6c2421a450"`
[INFO] [stderr]    Compiling libc v0.2.31
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling hw04 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/main.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let result = evaluate_line(&mut stack, &buffer);
[INFO] [stderr]    |             ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/rpn.rs:124:21
[INFO] [stderr]     |
[INFO] [stderr] 124 |                     self.push(n);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/rpn.rs:133:21
[INFO] [stderr]     |
[INFO] [stderr] 133 |                     self.push(first.unwrap());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.30s
[INFO] running `"docker" "inspect" "827d81287a6084a6208db6fc5b23ef367fabecb011af9b094785ea6c2421a450"`
[INFO] running `"docker" "rm" "-f" "827d81287a6084a6208db6fc5b23ef367fabecb011af9b094785ea6c2421a450"`
[INFO] [stdout] 827d81287a6084a6208db6fc5b23ef367fabecb011af9b094785ea6c2421a450
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7ba0dfa62b4107dbc3e24c5cf627ec2b54a13f4be9944853568282745e0191ab
[INFO] running `"docker" "start" "-a" "7ba0dfa62b4107dbc3e24c5cf627ec2b54a13f4be9944853568282745e0191ab"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hw04 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/main.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let result = evaluate_line(&mut stack, &buffer);
[INFO] [stderr]    |             ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/rpn.rs:124:21
[INFO] [stderr]     |
[INFO] [stderr] 124 |                     self.push(n);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/rpn.rs:133:21
[INFO] [stderr]     |
[INFO] [stderr] 133 |                     self.push(first.unwrap());
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.91s
[INFO] running `"docker" "inspect" "7ba0dfa62b4107dbc3e24c5cf627ec2b54a13f4be9944853568282745e0191ab"`
[INFO] running `"docker" "rm" "-f" "7ba0dfa62b4107dbc3e24c5cf627ec2b54a13f4be9944853568282745e0191ab"`
[INFO] [stdout] 7ba0dfa62b4107dbc3e24c5cf627ec2b54a13f4be9944853568282745e0191ab
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 6ceefaeee386aa452df9e9dd8120994bcd72fb5dedfbee19b49525e4cfc58f28
[INFO] running `"docker" "start" "-a" "6ceefaeee386aa452df9e9dd8120994bcd72fb5dedfbee19b49525e4cfc58f28"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/hw04-406dd96ce2655118
[INFO] [stdout] 
[INFO] [stdout] running 23 tests
[INFO] [stdout] test rpn::tests::test_eval_add1 ... ok
[INFO] [stdout] test rpn::tests::test_eval_add3 ... ok
[INFO] [stdout] test rpn::tests::test_eval_add2 ... ok
[INFO] [stdout] test rpn::tests::test_eval_eq1 ... ok
[INFO] [stdout] test rpn::tests::test_eval_neg1 ... ok
[INFO] [stdout] test rpn::tests::test_eval_quit ... ok
[INFO] [stdout] test rpn::tests::test_eval_neg2 ... ok
[INFO] [stdout] test rpn::tests::test_eval_eq2 ... ok
[INFO] [stdout] test rpn::tests::test_eval_swap2 ... ok
[INFO] [stdout] test rpn::tests::test_eval_rand2 ... ok
[INFO] [stdout] test rpn::tests::test_eval_swap1 ... ok
[INFO] [stdout] test rpn::tests::test_pop_empty1 ... ok
[INFO] [stdout] test rpn::tests::test_pop_empty2 ... ok
[INFO] [stdout] test tests::test_evaluate_line_bad_parse ... ok
[INFO] [stdout] test tests::test_evaluate_line_bool ... ok
[INFO] [stdout] test tests::test_evaluate_line_int ... ok
[INFO] [stdout] test tests::test_evaluate_line_eq ... ok
[INFO] [stdout] test tests::test_evaluate_line_neg ... ok
[INFO] [stdout] test tests::test_evaluate_line_plus ... ok
[INFO] [stdout] test tests::test_evaluate_line_quit ... ok
[INFO] [stdout] test tests::test_evaluate_line_swap ... ok
[INFO] [stdout] test rpn::tests::test_eval_rand1 ... ok
[INFO] [stdout] test tests::test_evaluate_line_rand ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "6ceefaeee386aa452df9e9dd8120994bcd72fb5dedfbee19b49525e4cfc58f28"`
[INFO] running `"docker" "rm" "-f" "6ceefaeee386aa452df9e9dd8120994bcd72fb5dedfbee19b49525e4cfc58f28"`
[INFO] [stdout] 6ceefaeee386aa452df9e9dd8120994bcd72fb5dedfbee19b49525e4cfc58f28