[INFO] updating cached repository wilcoxky/rust-hw04
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wilcoxky/rust-hw04
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wilcoxky/rust-hw04" "work/ex/beta-1.38-1/sources/1.37.0/gh/wilcoxky/rust-hw04"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wilcoxky/rust-hw04'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wilcoxky/rust-hw04" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wilcoxky/rust-hw04"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wilcoxky/rust-hw04'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2567a8394af35830fbaf522f223c6e485873bd3e
[INFO] sha for GitHub repo wilcoxky/rust-hw04: 2567a8394af35830fbaf522f223c6e485873bd3e
[INFO] validating manifest of wilcoxky/rust-hw04 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wilcoxky/rust-hw04 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing wilcoxky/rust-hw04
[INFO] finished frobbing wilcoxky/rust-hw04
[INFO] frobbed toml for wilcoxky/rust-hw04 written to work/ex/beta-1.38-1/sources/1.37.0/gh/wilcoxky/rust-hw04/Cargo.toml
[INFO] started frobbing wilcoxky/rust-hw04
[INFO] finished frobbing wilcoxky/rust-hw04
[INFO] frobbed toml for wilcoxky/rust-hw04 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wilcoxky/rust-hw04/Cargo.toml
[INFO] crate wilcoxky/rust-hw04 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing wilcoxky/rust-hw04 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 61c0bb5a0518b58fd184560d67dc2c6d958e36d9268e39c8a8e925a0610d1cca
[INFO] running `"docker" "start" "-a" "61c0bb5a0518b58fd184560d67dc2c6d958e36d9268e39c8a8e925a0610d1cca"`
[INFO] [stderr]    Compiling hw04 v0.1.0 (/opt/crater/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 1.18s
[INFO] running `"docker" "inspect" "61c0bb5a0518b58fd184560d67dc2c6d958e36d9268e39c8a8e925a0610d1cca"`
[INFO] running `"docker" "rm" "-f" "61c0bb5a0518b58fd184560d67dc2c6d958e36d9268e39c8a8e925a0610d1cca"`
[INFO] [stdout] 61c0bb5a0518b58fd184560d67dc2c6d958e36d9268e39c8a8e925a0610d1cca
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 863eb8e8ae4361d08a4828e5ae4dd9b978c239362b51030ebb34d6bd84f22593
[INFO] running `"docker" "start" "-a" "863eb8e8ae4361d08a4828e5ae4dd9b978c239362b51030ebb34d6bd84f22593"`
[INFO] [stderr]    Compiling hw04 v0.1.0 (/opt/crater/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 1.48s
[INFO] running `"docker" "inspect" "863eb8e8ae4361d08a4828e5ae4dd9b978c239362b51030ebb34d6bd84f22593"`
[INFO] running `"docker" "rm" "-f" "863eb8e8ae4361d08a4828e5ae4dd9b978c239362b51030ebb34d6bd84f22593"`
[INFO] [stdout] 863eb8e8ae4361d08a4828e5ae4dd9b978c239362b51030ebb34d6bd84f22593
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 6c2660705896f0813f1ad211e32fd0c08fcc2b98b5ab0ea14f43b721c2d57e52
[INFO] running `"docker" "start" "-a" "6c2660705896f0813f1ad211e32fd0c08fcc2b98b5ab0ea14f43b721c2d57e52"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hw04-3d92aaa6a3212c2a
[INFO] [stdout] 
[INFO] [stdout] running 23 tests
[INFO] [stdout] test rpn::tests::test_eval_eq1 ... ok
[INFO] [stdout] test rpn::tests::test_eval_add3 ... ok
[INFO] [stdout] test rpn::tests::test_eval_eq2 ... ok
[INFO] [stdout] test rpn::tests::test_eval_add2 ... ok
[INFO] [stdout] test rpn::tests::test_eval_neg1 ... ok
[INFO] [stdout] test rpn::tests::test_eval_add1 ... ok
[INFO] [stdout] test rpn::tests::test_eval_neg2 ... ok
[INFO] [stdout] test rpn::tests::test_eval_quit ... ok
[INFO] [stdout] test rpn::tests::test_eval_rand1 ... ok
[INFO] [stdout] test rpn::tests::test_eval_swap2 ... ok
[INFO] [stdout] test rpn::tests::test_pop_empty1 ... ok
[INFO] [stdout] test rpn::tests::test_eval_swap1 ... 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_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_rand ... ok
[INFO] [stdout] test tests::test_evaluate_line_swap ... ok
[INFO] [stdout] test tests::test_evaluate_line_eq ... ok
[INFO] [stdout] test rpn::tests::test_eval_rand2 ... 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" "6c2660705896f0813f1ad211e32fd0c08fcc2b98b5ab0ea14f43b721c2d57e52"`
[INFO] running `"docker" "rm" "-f" "6c2660705896f0813f1ad211e32fd0c08fcc2b98b5ab0ea14f43b721c2d57e52"`
[INFO] [stdout] 6c2660705896f0813f1ad211e32fd0c08fcc2b98b5ab0ea14f43b721c2d57e52