[INFO] updating cached repository denismerigoux/tarot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/denismerigoux/tarot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/denismerigoux/tarot" "work/ex/clippy-test-run/sources/stable/gh/denismerigoux/tarot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/denismerigoux/tarot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/denismerigoux/tarot" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/denismerigoux/tarot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/denismerigoux/tarot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 717f36582bf18cc2055415a83ea5e6bab0d2e719
[INFO] sha for GitHub repo denismerigoux/tarot: 717f36582bf18cc2055415a83ea5e6bab0d2e719
[INFO] validating manifest of denismerigoux/tarot on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of denismerigoux/tarot on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing denismerigoux/tarot
[INFO] finished frobbing denismerigoux/tarot
[INFO] frobbed toml for denismerigoux/tarot written to work/ex/clippy-test-run/sources/stable/gh/denismerigoux/tarot/Cargo.toml
[INFO] started frobbing denismerigoux/tarot
[INFO] finished frobbing denismerigoux/tarot
[INFO] frobbed toml for denismerigoux/tarot written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/denismerigoux/tarot/Cargo.toml
[INFO] crate denismerigoux/tarot has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting denismerigoux/tarot against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/denismerigoux/tarot:/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 -Dclippy::into_iter_on_array" "-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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b9d5a032bbe8563eb9746ff0c3ee853ae79f1540f73565335228e485cea3c4c4
[INFO] running `"docker" "start" "-a" "b9d5a032bbe8563eb9746ff0c3ee853ae79f1540f73565335228e485cea3c4c4"`
[INFO] [stderr]     Checking tarot v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/deck.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 suit: suit,
[INFO] [stderr]    |                 ^^^^^^^^^^ help: replace it with: `suit`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/deck.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |                 symbol: symbol,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^ help: replace it with: `symbol`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/game.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/game.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             hand: hand,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `hand`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/game.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         taker_id: taker_id,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: replace it with: `taker_id`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/deck.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |                 suit: suit,
[INFO] [stderr]    |                 ^^^^^^^^^^ help: replace it with: `suit`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/deck.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |                 symbol: symbol,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^ help: replace it with: `symbol`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/game.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/game.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             hand: hand,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `hand`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/game.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         taker_id: taker_id,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: replace it with: `taker_id`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/card.rs:219:27
[INFO] [stderr]     |
[INFO] [stderr] 219 |         Card::Face(Face { suit: _, symbol: Symbol::Jack }) => 10,
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unneeded_field_pattern)] on by default
[INFO] [stderr]     = help: Try with `Face { symbol: Symbol::Jack, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/card.rs:220:27
[INFO] [stderr]     |
[INFO] [stderr] 220 |         Card::Face(Face { suit: _, symbol: Symbol::Knight }) => 20,
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol: Symbol::Knight, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/card.rs:221:27
[INFO] [stderr]     |
[INFO] [stderr] 221 |         Card::Face(Face { suit: _, symbol: Symbol::Queen }) => 30,
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol: Symbol::Queen, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/card.rs:222:27
[INFO] [stderr]     |
[INFO] [stderr] 222 |         Card::Face(Face { suit: _, symbol: Symbol::King }) => 40,
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol: Symbol::King, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:154:17
[INFO] [stderr]     |
[INFO] [stderr] 154 |         None => return valid_hand,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_hand`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:161:21
[INFO] [stderr]     |
[INFO] [stderr] 161 |                     return valid_cards(player, &new_cards_played);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_cards(player, &new_cards_played)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:178:25
[INFO] [stderr]     |
[INFO] [stderr] 178 |                         return higher_trumps;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `higher_trumps`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:189:29
[INFO] [stderr]     |
[INFO] [stderr] 189 |                             return lower_trumps;
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `lower_trumps`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 |                             return valid_hand;
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_hand`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:209:25
[INFO] [stderr]     |
[INFO] [stderr] 209 |                         return same_suit_faces;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `same_suit_faces`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:226:29
[INFO] [stderr]     |
[INFO] [stderr] 226 |                             return valid_trumps;
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_trumps`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:237:33
[INFO] [stderr]     |
[INFO] [stderr] 237 |                                 return trumps;
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^ help: remove `return` as shown: `trumps`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:241:33
[INFO] [stderr]     |
[INFO] [stderr] 241 |                                 return valid_hand;
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_hand`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/game.rs:198:53
[INFO] [stderr]     |
[INFO] [stderr] 198 |                 card::Card::Face(card::Face { suit, symbol: _ }) => {
[INFO] [stderr]     |                                                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { suit, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/game.rs:202:76
[INFO] [stderr]     |
[INFO] [stderr] 202 |                             card::Card::Face(card::Face { suit: this_suit, symbol: _ }) => {
[INFO] [stderr]     |                                                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { suit: this_suit, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/game.rs:305:55
[INFO] [stderr]     |
[INFO] [stderr] 305 |                         card::Card::Face(card::Face { suit: _, symbol }) => {
[INFO] [stderr]     |                                                       ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/game.rs:330:55
[INFO] [stderr]     |
[INFO] [stderr] 330 |                         card::Card::Face(card::Face { suit: _, symbol }) => {
[INFO] [stderr]     |                                                       ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]   --> src/ai.rs:37:47
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 card::Card::Face(card::Face { suit: _, symbol }) => {
[INFO] [stderr]    |                                               ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Try with `Face { symbol, .. }`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]   --> src/scoring.rs:33:39
[INFO] [stderr]    |
[INFO] [stderr] 33 |         card::Card::Face(card::Face { suit: _, symbol }) => {
[INFO] [stderr]    |                                       ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Try with `Face { symbol, .. }`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/card.rs:219:27
[INFO] [stderr]     |
[INFO] [stderr] 219 |         Card::Face(Face { suit: _, symbol: Symbol::Jack }) => 10,
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unneeded_field_pattern)] on by default
[INFO] [stderr]     = help: Try with `Face { symbol: Symbol::Jack, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/card.rs:220:27
[INFO] [stderr]     |
[INFO] [stderr] 220 |         Card::Face(Face { suit: _, symbol: Symbol::Knight }) => 20,
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol: Symbol::Knight, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/card.rs:221:27
[INFO] [stderr]     |
[INFO] [stderr] 221 |         Card::Face(Face { suit: _, symbol: Symbol::Queen }) => 30,
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol: Symbol::Queen, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/card.rs:222:27
[INFO] [stderr]     |
[INFO] [stderr] 222 |         Card::Face(Face { suit: _, symbol: Symbol::King }) => 40,
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol: Symbol::King, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:154:17
[INFO] [stderr]     |
[INFO] [stderr] 154 |         None => return valid_hand,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_hand`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:161:21
[INFO] [stderr]     |
[INFO] [stderr] 161 |                     return valid_cards(player, &new_cards_played);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_cards(player, &new_cards_played)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:178:25
[INFO] [stderr]     |
[INFO] [stderr] 178 |                         return higher_trumps;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `higher_trumps`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:189:29
[INFO] [stderr]     |
[INFO] [stderr] 189 |                             return lower_trumps;
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `lower_trumps`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 |                             return valid_hand;
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_hand`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:209:25
[INFO] [stderr]     |
[INFO] [stderr] 209 |                         return same_suit_faces;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `same_suit_faces`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:226:29
[INFO] [stderr]     |
[INFO] [stderr] 226 |                             return valid_trumps;
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_trumps`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:237:33
[INFO] [stderr]     |
[INFO] [stderr] 237 |                                 return trumps;
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^ help: remove `return` as shown: `trumps`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/game.rs:241:33
[INFO] [stderr]     |
[INFO] [stderr] 241 |                                 return valid_hand;
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `valid_hand`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/game.rs:198:53
[INFO] [stderr]     |
[INFO] [stderr] 198 |                 card::Card::Face(card::Face { suit, symbol: _ }) => {
[INFO] [stderr]     |                                                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { suit, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/game.rs:202:76
[INFO] [stderr]     |
[INFO] [stderr] 202 |                             card::Card::Face(card::Face { suit: this_suit, symbol: _ }) => {
[INFO] [stderr]     |                                                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { suit: this_suit, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/game.rs:305:55
[INFO] [stderr]     |
[INFO] [stderr] 305 |                         card::Card::Face(card::Face { suit: _, symbol }) => {
[INFO] [stderr]     |                                                       ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/game.rs:330:55
[INFO] [stderr]     |
[INFO] [stderr] 330 |                         card::Card::Face(card::Face { suit: _, symbol }) => {
[INFO] [stderr]     |                                                       ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Face { symbol, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]   --> src/ai.rs:37:47
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 card::Card::Face(card::Face { suit: _, symbol }) => {
[INFO] [stderr]    |                                               ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Try with `Face { symbol, .. }`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]   --> src/scoring.rs:33:39
[INFO] [stderr]    |
[INFO] [stderr] 33 |         card::Card::Face(card::Face { suit: _, symbol }) => {
[INFO] [stderr]    |                                       ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Try with `Face { symbol, .. }`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:131:26
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn sort_by_playing_order(mut players: &mut Vec<Player>, starting_player_id: i32) {
[INFO] [stderr]     |                          ----^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:282:19
[INFO] [stderr]     |
[INFO] [stderr] 282 | fn deal_with_fool(mut cards_played: &mut Heap,
[INFO] [stderr]     |                   ----^^^^^^^^^^^^
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:283:19
[INFO] [stderr]     |
[INFO] [stderr] 283 |                   mut game: &mut Game,
[INFO] [stderr]     |                   ----^^^^
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ai.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn exchange_dog(mut players: &mut Vec<game::Player>,
[INFO] [stderr]    |                     ----^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/card.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | /         match self {
[INFO] [stderr] 15 | |             &Suit::Clubs => write!(f, "trèfle"),
[INFO] [stderr] 16 | |             &Suit::Diamonds => write!(f, "carreau"),
[INFO] [stderr] 17 | |             &Suit::Hearts => write!(f, "cœur"),
[INFO] [stderr] 18 | |             &Suit::Spades => write!(f, "pique"),
[INFO] [stderr] 19 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 14 |         match *self {
[INFO] [stderr] 15 |             Suit::Clubs => write!(f, "trèfle"),
[INFO] [stderr] 16 |             Suit::Diamonds => write!(f, "carreau"),
[INFO] [stderr] 17 |             Suit::Hearts => write!(f, "cœur"),
[INFO] [stderr] 18 |             Suit::Spades => write!(f, "pique"),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/card.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 | /         match self {
[INFO] [stderr] 50 | |             &Symbol::Ace => write!(f, "as"),
[INFO] [stderr] 51 | |             &Symbol::Two => write!(f, "2"),
[INFO] [stderr] 52 | |             &Symbol::Three => write!(f, "3"),
[INFO] [stderr] ...  |
[INFO] [stderr] 63 | |             &Symbol::King => write!(f, "roi"),
[INFO] [stderr] 64 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 49 |         match *self {
[INFO] [stderr] 50 |             Symbol::Ace => write!(f, "as"),
[INFO] [stderr] 51 |             Symbol::Two => write!(f, "2"),
[INFO] [stderr] 52 |             Symbol::Three => write!(f, "3"),
[INFO] [stderr] 53 |             Symbol::Four => write!(f, "4"),
[INFO] [stderr] 54 |             Symbol::Five => write!(f, "5"),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:131:26
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn sort_by_playing_order(mut players: &mut Vec<Player>, starting_player_id: i32) {
[INFO] [stderr]     |                          ----^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/card.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 | /         match self {
[INFO] [stderr] 131 | |             &Trump::One => write!(f, "1"),
[INFO] [stderr] 132 | |             &Trump::Two => write!(f, "2"),
[INFO] [stderr] 133 | |             &Trump::Three => write!(f, "3"),
[INFO] [stderr] ...   |
[INFO] [stderr] 151 | |             &Trump::TwentyOne => write!(f, "21"),
[INFO] [stderr] 152 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 130 |         match *self {
[INFO] [stderr] 131 |             Trump::One => write!(f, "1"),
[INFO] [stderr] 132 |             Trump::Two => write!(f, "2"),
[INFO] [stderr] 133 |             Trump::Three => write!(f, "3"),
[INFO] [stderr] 134 |             Trump::Four => write!(f, "4"),
[INFO] [stderr] 135 |             Trump::Five => write!(f, "5"),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/card.rs:191:9
[INFO] [stderr]     |
[INFO] [stderr] 191 | /         match self {
[INFO] [stderr] 192 | |             &Card::Fool => write!(f, "excuse"),
[INFO] [stderr] 193 | |             &Card::Face(Face { ref suit, ref symbol }) => write!(f, "{} de {}", symbol, suit),
[INFO] [stderr] 194 | |             &Card::Trump(Trump::One) => write!(f, "petit"),
[INFO] [stderr] 195 | |             &Card::Trump(ref trump) => write!(f, "{} d'atout", trump),
[INFO] [stderr] 196 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 191 |         match *self {
[INFO] [stderr] 192 |             Card::Fool => write!(f, "excuse"),
[INFO] [stderr] 193 |             Card::Face(Face { ref suit, ref symbol }) => write!(f, "{} de {}", symbol, suit),
[INFO] [stderr] 194 |             Card::Trump(Trump::One) => write!(f, "petit"),
[INFO] [stderr] 195 |             Card::Trump(ref trump) => write!(f, "{} d'atout", trump),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/card.rs:214:31
[INFO] [stderr]     |
[INFO] [stderr] 214 | pub fn potential_value(&card: &Card) -> i32 {
[INFO] [stderr]     |                               ^^^^^ help: consider passing by value instead: `Card`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/deck.rs:30:31
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn distribute_cards(deck: &Deck) -> (Hand, Vec<Hand>) {
[INFO] [stderr]    |                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `counter` is used as a loop counter. Consider using `for (counter, item) in 0..hands.len().enumerate()` or similar iterators
[INFO] [stderr]   --> src/game.rs:26:14
[INFO] [stderr]    |
[INFO] [stderr] 26 |     for _ in 0..hands.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:282:19
[INFO] [stderr]     |
[INFO] [stderr] 282 | fn deal_with_fool(mut cards_played: &mut Heap,
[INFO] [stderr]     |                   ----^^^^^^^^^^^^
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game.rs:283:19
[INFO] [stderr]     |
[INFO] [stderr] 283 |                   mut game: &mut Game,
[INFO] [stderr]     |                   ----^^^^
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `players`.
[INFO] [stderr]   --> src/game.rs:49:14
[INFO] [stderr]    |
[INFO] [stderr] 49 |     for i in 1..params::NUMBER_OF_PLAYERS {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 49 |     for <item> in players.iter().take(params::NUMBER_OF_PLAYERS).skip(1) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/game.rs:150:47
[INFO] [stderr]     |
[INFO] [stderr] 150 | fn valid_cards(player: &Player, cards_played: &Heap) -> deck::Hand {
[INFO] [stderr]     |                                               ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 159 |                     let mut new_cards_played = cards_played.clone();
[INFO] [stderr]     |                                                -------------------- help: change `cards_played.clone()` to: `cards_played.to_owned()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ai.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn exchange_dog(mut players: &mut Vec<game::Player>,
[INFO] [stderr]    |                     ----^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:171:38
[INFO] [stderr]     |
[INFO] [stderr] 171 |                         .map(|&card| card.clone())
[INFO] [stderr]     |                                      ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:182:42
[INFO] [stderr]     |
[INFO] [stderr] 182 |                             .map(|&card| card.clone())
[INFO] [stderr]     |                                          ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:200:38
[INFO] [stderr]     |
[INFO] [stderr] 200 |                         .map(|&card| card.clone())
[INFO] [stderr]     |                                      ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:214:42
[INFO] [stderr]     |
[INFO] [stderr] 214 |                             .map(|&card| card.clone())
[INFO] [stderr]     |                                          ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:230:46
[INFO] [stderr]     |
[INFO] [stderr] 230 |                                 .map(|&card| card.clone())
[INFO] [stderr]     |                                              ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/game.rs:252:28
[INFO] [stderr]     |
[INFO] [stderr] 252 | fn max_trump(cards_played: &Heap) -> Option<card::Trump> {
[INFO] [stderr]     |                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/game.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 | /         match card {
[INFO] [stderr] 256 | |             card::Card::Trump(trump) => {
[INFO] [stderr] 257 | |                 match max_trump {
[INFO] [stderr] 258 | |                     None => max_trump = Some(trump),
[INFO] [stderr] ...   |
[INFO] [stderr] 266 | |             _ => (),
[INFO] [stderr] 267 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 255 |         if let card::Card::Trump(trump) = card {
[INFO] [stderr] 256 |     match max_trump {
[INFO] [stderr] 257 |         None => max_trump = Some(trump),
[INFO] [stderr] 258 |         Some(max) => {
[INFO] [stderr] 259 |             if max < trump {
[INFO] [stderr] 260 |                 max_trump = Some(trump);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
[INFO] [stderr]    --> src/game.rs:301:40
[INFO] [stderr]     |
[INFO] [stderr] 301 |                   let card_to_exchange = attack_copy.iter()
[INFO] [stderr]     |  ________________________________________^
[INFO] [stderr] 302 | |                     .enumerate()
[INFO] [stderr] 303 | |                     .filter(|&(_, &(card, _))| match card {
[INFO] [stderr] 304 | |                         card::Card::Trump(_) => false,
[INFO] [stderr] ...   |
[INFO] [stderr] 313 | |                     })
[INFO] [stderr] 314 | |                     .next();
[INFO] [stderr]     | |___________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::filter_next)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#filter_next
[INFO] [stderr] 
[INFO] [stderr] warning: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
[INFO] [stderr]    --> src/game.rs:326:40
[INFO] [stderr]     |
[INFO] [stderr] 326 |                   let card_to_exchange = defense_copy.iter()
[INFO] [stderr]     |  ________________________________________^
[INFO] [stderr] 327 | |                     .enumerate()
[INFO] [stderr] 328 | |                     .filter(|&(_, &(card, _))| match card {
[INFO] [stderr] 329 | |                         card::Card::Trump(_) => false,
[INFO] [stderr] ...   |
[INFO] [stderr] 338 | |                     })
[INFO] [stderr] 339 | |                     .next();
[INFO] [stderr]     | |___________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#filter_next
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/card.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | /         match self {
[INFO] [stderr] 15 | |             &Suit::Clubs => write!(f, "trèfle"),
[INFO] [stderr] 16 | |             &Suit::Diamonds => write!(f, "carreau"),
[INFO] [stderr] 17 | |             &Suit::Hearts => write!(f, "cœur"),
[INFO] [stderr] 18 | |             &Suit::Spades => write!(f, "pique"),
[INFO] [stderr] 19 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 14 |         match *self {
[INFO] [stderr] 15 |             Suit::Clubs => write!(f, "trèfle"),
[INFO] [stderr] 16 |             Suit::Diamonds => write!(f, "carreau"),
[INFO] [stderr] 17 |             Suit::Hearts => write!(f, "cœur"),
[INFO] [stderr] 18 |             Suit::Spades => write!(f, "pique"),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/ai.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn auctions(players: &Vec<game::Player>) -> i32 {
[INFO] [stderr]   |                          ^^^^^^^^^^^^^^^^^^ help: change this to: `&[game::Player]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/card.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 | /         match self {
[INFO] [stderr] 50 | |             &Symbol::Ace => write!(f, "as"),
[INFO] [stderr] 51 | |             &Symbol::Two => write!(f, "2"),
[INFO] [stderr] 52 | |             &Symbol::Three => write!(f, "3"),
[INFO] [stderr] ...  |
[INFO] [stderr] 63 | |             &Symbol::King => write!(f, "roi"),
[INFO] [stderr] 64 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 49 |         match *self {
[INFO] [stderr] 50 |             Symbol::Ace => write!(f, "as"),
[INFO] [stderr] 51 |             Symbol::Two => write!(f, "2"),
[INFO] [stderr] 52 |             Symbol::Three => write!(f, "3"),
[INFO] [stderr] 53 |             Symbol::Four => write!(f, "4"),
[INFO] [stderr] 54 |             Symbol::Five => write!(f, "5"),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/card.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 | /         match self {
[INFO] [stderr] 131 | |             &Trump::One => write!(f, "1"),
[INFO] [stderr] 132 | |             &Trump::Two => write!(f, "2"),
[INFO] [stderr] 133 | |             &Trump::Three => write!(f, "3"),
[INFO] [stderr] ...   |
[INFO] [stderr] 151 | |             &Trump::TwentyOne => write!(f, "21"),
[INFO] [stderr] 152 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 130 |         match *self {
[INFO] [stderr] 131 |             Trump::One => write!(f, "1"),
[INFO] [stderr] 132 |             Trump::Two => write!(f, "2"),
[INFO] [stderr] 133 |             Trump::Three => write!(f, "3"),
[INFO] [stderr] 134 |             Trump::Four => write!(f, "4"),
[INFO] [stderr] 135 |             Trump::Five => write!(f, "5"),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/card.rs:191:9
[INFO] [stderr]     |
[INFO] [stderr] 191 | /         match self {
[INFO] [stderr] 192 | |             &Card::Fool => write!(f, "excuse"),
[INFO] [stderr] 193 | |             &Card::Face(Face { ref suit, ref symbol }) => write!(f, "{} de {}", symbol, suit),
[INFO] [stderr] 194 | |             &Card::Trump(Trump::One) => write!(f, "petit"),
[INFO] [stderr] 195 | |             &Card::Trump(ref trump) => write!(f, "{} d'atout", trump),
[INFO] [stderr] 196 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/ai.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let ref mut taker = match players.iter_mut().find(|player| player.id == game.taker_id) {
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 191 |         match *self {
[INFO] [stderr] 192 |             Card::Fool => write!(f, "excuse"),
[INFO] [stderr] 193 |             Card::Face(Face { ref suit, ref symbol }) => write!(f, "{} de {}", symbol, suit),
[INFO] [stderr] 194 |             Card::Trump(Trump::One) => write!(f, "petit"),
[INFO] [stderr] 195 |             Card::Trump(ref trump) => write!(f, "{} d'atout", trump),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let taker = &mut (match players.iter_mut().find(|player| player.id == game.taker_id) {
[INFO] [stderr] 25 |         None => panic!("cannot find the taker"),
[INFO] [stderr] 26 |         Some(player) => player,
[INFO] [stderr] 27 |     });
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
[INFO] [stderr]   --> src/ai.rs:55:29
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let exchange_card = taker_hand.iter().filter(|&&card| dog_card > card).next();
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: replace `filter(|&&card| dog_card > card).next()` with `find(|&&card| dog_card > card)`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#filter_next
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/ai.rs:77:67
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn select_card(_: &game::Player, valid_cards: &deck::Hand, _: &game::Heap) -> card::Card {
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/ai.rs:80:23
[INFO] [stderr]    |
[INFO] [stderr] 80 |         Some(card) => card.clone(),
[INFO] [stderr]    |                       ^^^^^^^^^^^^ help: try dereferencing it: `*card`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/card.rs:214:31
[INFO] [stderr]     |
[INFO] [stderr] 214 | pub fn potential_value(&card: &Card) -> i32 {
[INFO] [stderr]     |                               ^^^^^ help: consider passing by value instead: `Card`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/scoring.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn card_score(&card: &card::Card) -> f32 {
[INFO] [stderr]    |                      ^^^^^^^^^^^ help: consider passing by value instead: `card::Card`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/deck.rs:30:31
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn distribute_cards(deck: &Deck) -> (Hand, Vec<Hand>) {
[INFO] [stderr]    |                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `counter` is used as a loop counter. Consider using `for (counter, item) in 0..hands.len().enumerate()` or similar iterators
[INFO] [stderr]   --> src/game.rs:26:14
[INFO] [stderr]    |
[INFO] [stderr] 26 |     for _ in 0..hands.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `players`.
[INFO] [stderr]   --> src/game.rs:49:14
[INFO] [stderr]    |
[INFO] [stderr] 49 |     for i in 1..params::NUMBER_OF_PLAYERS {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 49 |     for <item> in players.iter().take(params::NUMBER_OF_PLAYERS).skip(1) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/game.rs:150:47
[INFO] [stderr]     |
[INFO] [stderr] 150 | fn valid_cards(player: &Player, cards_played: &Heap) -> deck::Hand {
[INFO] [stderr]     |                                               ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 159 |                     let mut new_cards_played = cards_played.clone();
[INFO] [stderr]     |                                                -------------------- help: change `cards_played.clone()` to: `cards_played.to_owned()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:171:38
[INFO] [stderr]     |
[INFO] [stderr] 171 |                         .map(|&card| card.clone())
[INFO] [stderr]     |                                      ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:182:42
[INFO] [stderr]     |
[INFO] [stderr] 182 |                             .map(|&card| card.clone())
[INFO] [stderr]     |                                          ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:200:38
[INFO] [stderr]     |
[INFO] [stderr] 200 |                         .map(|&card| card.clone())
[INFO] [stderr]     |                                      ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:214:42
[INFO] [stderr]     |
[INFO] [stderr] 214 |                             .map(|&card| card.clone())
[INFO] [stderr]     |                                          ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/game.rs:230:46
[INFO] [stderr]     |
[INFO] [stderr] 230 |                                 .map(|&card| card.clone())
[INFO] [stderr]     |                                              ^^^^^^^^^^^^ help: try removing the `clone` call: `card`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/game.rs:252:28
[INFO] [stderr]     |
[INFO] [stderr] 252 | fn max_trump(cards_played: &Heap) -> Option<card::Trump> {
[INFO] [stderr]     |                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/game.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 | /         match card {
[INFO] [stderr] 256 | |             card::Card::Trump(trump) => {
[INFO] [stderr] 257 | |                 match max_trump {
[INFO] [stderr] 258 | |                     None => max_trump = Some(trump),
[INFO] [stderr] ...   |
[INFO] [stderr] 266 | |             _ => (),
[INFO] [stderr] 267 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 255 |         if let card::Card::Trump(trump) = card {
[INFO] [stderr] 256 |     match max_trump {
[INFO] [stderr] 257 |         None => max_trump = Some(trump),
[INFO] [stderr] 258 |         Some(max) => {
[INFO] [stderr] 259 |             if max < trump {
[INFO] [stderr] 260 |                 max_trump = Some(trump);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
[INFO] [stderr]    --> src/game.rs:301:40
[INFO] [stderr]     |
[INFO] [stderr] 301 |                   let card_to_exchange = attack_copy.iter()
[INFO] [stderr]     |  ________________________________________^
[INFO] [stderr] 302 | |                     .enumerate()
[INFO] [stderr] 303 | |                     .filter(|&(_, &(card, _))| match card {
[INFO] [stderr] 304 | |                         card::Card::Trump(_) => false,
[INFO] [stderr] ...   |
[INFO] [stderr] 313 | |                     })
[INFO] [stderr] 314 | |                     .next();
[INFO] [stderr]     | |___________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::filter_next)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#filter_next
[INFO] [stderr] 
[INFO] [stderr] warning: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
[INFO] [stderr]    --> src/game.rs:326:40
[INFO] [stderr]     |
[INFO] [stderr] 326 |                   let card_to_exchange = defense_copy.iter()
[INFO] [stderr]     |  ________________________________________^
[INFO] [stderr] 327 | |                     .enumerate()
[INFO] [stderr] 328 | |                     .filter(|&(_, &(card, _))| match card {
[INFO] [stderr] 329 | |                         card::Card::Trump(_) => false,
[INFO] [stderr] ...   |
[INFO] [stderr] 338 | |                     })
[INFO] [stderr] 339 | |                     .next();
[INFO] [stderr]     | |___________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#filter_next
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/ai.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn auctions(players: &Vec<game::Player>) -> i32 {
[INFO] [stderr]   |                          ^^^^^^^^^^^^^^^^^^ help: change this to: `&[game::Player]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/ai.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let ref mut taker = match players.iter_mut().find(|player| player.id == game.taker_id) {
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let taker = &mut (match players.iter_mut().find(|player| player.id == game.taker_id) {
[INFO] [stderr] 25 |         None => panic!("cannot find the taker"),
[INFO] [stderr] 26 |         Some(player) => player,
[INFO] [stderr] 27 |     });
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
[INFO] [stderr]   --> src/ai.rs:55:29
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let exchange_card = taker_hand.iter().filter(|&&card| dog_card > card).next();
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: replace `filter(|&&card| dog_card > card).next()` with `find(|&&card| dog_card > card)`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#filter_next
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/ai.rs:77:67
[INFO] [stderr]    |
[INFO] [stderr] 77 | pub fn select_card(_: &game::Player, valid_cards: &deck::Hand, _: &game::Heap) -> card::Card {
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/ai.rs:80:23
[INFO] [stderr]    |
[INFO] [stderr] 80 |         Some(card) => card.clone(),
[INFO] [stderr]    |                       ^^^^^^^^^^^^ help: try dereferencing it: `*card`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/scoring.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn card_score(&card: &card::Card) -> f32 {
[INFO] [stderr]    |                      ^^^^^^^^^^^ help: consider passing by value instead: `card::Card`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "b9d5a032bbe8563eb9746ff0c3ee853ae79f1540f73565335228e485cea3c4c4"`
[INFO] running `"docker" "rm" "-f" "b9d5a032bbe8563eb9746ff0c3ee853ae79f1540f73565335228e485cea3c4c4"`
[INFO] [stdout] b9d5a032bbe8563eb9746ff0c3ee853ae79f1540f73565335228e485cea3c4c4