[INFO] crate matchertools 0.1.1 is already in cache
[INFO] extracting crate matchertools 0.1.1 into work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/matchertools/0.1.1
[INFO] extracting crate matchertools 0.1.1 into work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/matchertools/0.1.1
[INFO] validating manifest of matchertools-0.1.1 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of matchertools-0.1.1 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing matchertools-0.1.1
[INFO] finished frobbing matchertools-0.1.1
[INFO] frobbed toml for matchertools-0.1.1 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/matchertools/0.1.1/Cargo.toml
[INFO] started frobbing matchertools-0.1.1
[INFO] finished frobbing matchertools-0.1.1
[INFO] frobbed toml for matchertools-0.1.1 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/reg/matchertools/0.1.1/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking matchertools-0.1.1 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-7/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/reg/matchertools/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 08a3b4d1c31e3de896489e33c1b145decc665b9d4ba45bdfdff050df5f377592
[INFO] running `"docker" "start" "-a" "08a3b4d1c31e3de896489e33c1b145decc665b9d4ba45bdfdff050df5f377592"`
[INFO] [stderr]     Checking matchertools v0.1.1 (/opt/crater/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] 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 1.20s
[INFO] running `"docker" "inspect" "08a3b4d1c31e3de896489e33c1b145decc665b9d4ba45bdfdff050df5f377592"`
[INFO] running `"docker" "rm" "-f" "08a3b4d1c31e3de896489e33c1b145decc665b9d4ba45bdfdff050df5f377592"`
[INFO] [stdout] 08a3b4d1c31e3de896489e33c1b145decc665b9d4ba45bdfdff050df5f377592