[INFO] crate matchertools 0.1.1 is already in cache
[INFO] testing matchertools-0.1.1 against 1.38.0 for beta-1.39-1
[INFO] extracting crate matchertools 0.1.1 into work/builds/worker-4/source
[INFO] validating manifest of crates.io crate matchertools 0.1.1 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 crates.io crate matchertools 0.1.1
[INFO] finished tweaking crates.io crate matchertools 0.1.1
[INFO] tweaked toml for crates.io crate matchertools 0.1.1 written to work/builds/worker-4/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] 2d1bb24722450794ed9f6b8c28b68b7150ebc5a0a002bc9fe42cba505bbc690b
[INFO] running `"docker" "start" "-a" "2d1bb24722450794ed9f6b8c28b68b7150ebc5a0a002bc9fe42cba505bbc690b"`
[INFO] [stderr]    Compiling matchertools v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lib.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     /// You better go read the algorithm on wikipedia: https://en.wikipedia.org/wiki/Stable_marriage_problem
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 116 |     let mut men_preferences = men_preferences.clone();
[INFO] [stderr]     |     -------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lib.rs:192:5
[INFO] [stderr]     |
[INFO] [stderr] 192 | /     /// Tentatively accepts proposals. The rejections are permanent. The `engaged_man_woman` HashMap represents an unstable engagement. It suddenly
[INFO] [stderr] 193 | |     /// becomes 'stable' (go read about gale-shapley to understand what stable means) in the final round, when everyone is engaged to someone
[INFO] [stderr]     | |_____________________________________________________________________________________________________________________________________________^
[INFO] [stderr] 194 | /     for (woman, interested_men) in proposals {
[INFO] [stderr] 195 | |         let best_interested_man =
[INFO] [stderr] 196 | |             get_best_man_from_men_interested_in_a_woman(woman, women_preferences, &interested_men);
[INFO] [stderr] 197 | |         let man_currently_engaged_to = get_currently_engaged_man(&engaged_man_woman, &woman);
[INFO] [stderr] ...   |
[INFO] [stderr] 218 | |         }
[INFO] [stderr] 219 | |     }
[INFO] [stderr]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lib.rs:264:5
[INFO] [stderr]     |
[INFO] [stderr] 264 |       /// Returns the man a woman is currently engaged to
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 265 | /     for (man, engaged_woman) in engaged_man_woman {
[INFO] [stderr] 266 | |         if *engaged_woman == *woman {
[INFO] [stderr] 267 | |             return Some(*man);
[INFO] [stderr] 268 | |         }
[INFO] [stderr] 269 | |     }
[INFO] [stderr]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "2d1bb24722450794ed9f6b8c28b68b7150ebc5a0a002bc9fe42cba505bbc690b"`
[INFO] running `"docker" "rm" "-f" "2d1bb24722450794ed9f6b8c28b68b7150ebc5a0a002bc9fe42cba505bbc690b"`
[INFO] [stdout] 2d1bb24722450794ed9f6b8c28b68b7150ebc5a0a002bc9fe42cba505bbc690b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] af5a4f8e336832950af329089dcde13e048d2c6ffd365d5d09ab4a1eeaa3b586
[INFO] running `"docker" "start" "-a" "af5a4f8e336832950af329089dcde13e048d2c6ffd365d5d09ab4a1eeaa3b586"`
[INFO] [stderr]    Compiling matchertools v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lib.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     /// You better go read the algorithm on wikipedia: https://en.wikipedia.org/wiki/Stable_marriage_problem
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 116 |     let mut men_preferences = men_preferences.clone();
[INFO] [stderr]     |     -------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lib.rs:192:5
[INFO] [stderr]     |
[INFO] [stderr] 192 | /     /// Tentatively accepts proposals. The rejections are permanent. The `engaged_man_woman` HashMap represents an unstable engagement. It suddenly
[INFO] [stderr] 193 | |     /// becomes 'stable' (go read about gale-shapley to understand what stable means) in the final round, when everyone is engaged to someone
[INFO] [stderr]     | |_____________________________________________________________________________________________________________________________________________^
[INFO] [stderr] 194 | /     for (woman, interested_men) in proposals {
[INFO] [stderr] 195 | |         let best_interested_man =
[INFO] [stderr] 196 | |             get_best_man_from_men_interested_in_a_woman(woman, women_preferences, &interested_men);
[INFO] [stderr] 197 | |         let man_currently_engaged_to = get_currently_engaged_man(&engaged_man_woman, &woman);
[INFO] [stderr] ...   |
[INFO] [stderr] 218 | |         }
[INFO] [stderr] 219 | |     }
[INFO] [stderr]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/lib.rs:264:5
[INFO] [stderr]     |
[INFO] [stderr] 264 |       /// Returns the man a woman is currently engaged to
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 265 | /     for (man, engaged_woman) in engaged_man_woman {
[INFO] [stderr] 266 | |         if *engaged_woman == *woman {
[INFO] [stderr] 267 | |             return Some(*man);
[INFO] [stderr] 268 | |         }
[INFO] [stderr] 269 | |     }
[INFO] [stderr]     | |_____- rustdoc does not generate documentation for expressions
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "af5a4f8e336832950af329089dcde13e048d2c6ffd365d5d09ab4a1eeaa3b586"`
[INFO] running `"docker" "rm" "-f" "af5a4f8e336832950af329089dcde13e048d2c6ffd365d5d09ab4a1eeaa3b586"`
[INFO] [stdout] af5a4f8e336832950af329089dcde13e048d2c6ffd365d5d09ab4a1eeaa3b586
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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] d70e674507f9371a79f56f33048636eaa714e1832867bd4d2a5ac7840aac35ec
[INFO] running `"docker" "start" "-a" "d70e674507f9371a79f56f33048636eaa714e1832867bd4d2a5ac7840aac35ec"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/matchertools-970dde0c7eb58d14
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::test_create_proposals_base_case ... ok
[INFO] [stdout] test tests::test_accept_or_reject_proposals ... ok
[INFO] [stdout] test tests::test_create_proposals_base_case_with_better_preferences ... ok
[INFO] [stdout] test tests::test_get_best_man_from_interested_men ... ok
[INFO] [stdout] test tests::test_get_currently_engaged_man ... ok
[INFO] [stdout] test tests::test_get_rank ... ok
[INFO] [stdout] test tests::test_get_unengaged_men ... ok
[INFO] [stdout] test tests::test_make_engagement ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/integration_tests-3cf2bdd4bcd753d3
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_simple_case_string ... ok
[INFO] [stdout] test test_simple_case ... ok
[INFO] [stdout] test test_simple_case_string_2 ... ok
[INFO] [stdout] test test_moderate_case ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests matchertools
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - gale_shapley (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d70e674507f9371a79f56f33048636eaa714e1832867bd4d2a5ac7840aac35ec"`
[INFO] running `"docker" "rm" "-f" "d70e674507f9371a79f56f33048636eaa714e1832867bd4d2a5ac7840aac35ec"`
[INFO] [stdout] d70e674507f9371a79f56f33048636eaa714e1832867bd4d2a5ac7840aac35ec