[INFO] updating cached repository Ratismal/adventofcode2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Ratismal/adventofcode2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Ratismal/adventofcode2018" "work/ex/clippy-test-run/sources/stable/gh/Ratismal/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Ratismal/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Ratismal/adventofcode2018" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Ratismal/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Ratismal/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ed412b3d04c39a2f6d7895d57fc2f1d9b39a759
[INFO] sha for GitHub repo Ratismal/adventofcode2018: 8ed412b3d04c39a2f6d7895d57fc2f1d9b39a759
[INFO] validating manifest of Ratismal/adventofcode2018 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 Ratismal/adventofcode2018 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 Ratismal/adventofcode2018
[INFO] finished frobbing Ratismal/adventofcode2018
[INFO] frobbed toml for Ratismal/adventofcode2018 written to work/ex/clippy-test-run/sources/stable/gh/Ratismal/adventofcode2018/Cargo.toml
[INFO] started frobbing Ratismal/adventofcode2018
[INFO] finished frobbing Ratismal/adventofcode2018
[INFO] frobbed toml for Ratismal/adventofcode2018 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Ratismal/adventofcode2018/Cargo.toml
[INFO] crate Ratismal/adventofcode2018 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on the registry index
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting Ratismal/adventofcode2018 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/Ratismal/adventofcode2018:/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" "-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] 859445fb4300d4c2390accde340e445170552ccd9bc0c107c03bf829da48b4e9
[INFO] running `"docker" "start" "-a" "859445fb4300d4c2390accde340e445170552ccd9bc0c107c03bf829da48b4e9"`
[INFO] [stderr]     Checking adventofcode2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]  --> src/main.rs:8:62
[INFO] [stderr]   |
[INFO] [stderr] 8 |     println!("{yellow}@=========================@", yellow = "\x1B[33m");
[INFO] [stderr]   |                                                              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:11:18
[INFO] [stderr]    |
[INFO] [stderr] 11 |         yellow = "\x1B[33m",
[INFO] [stderr]    |                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |         green = "\x1B[32m",
[INFO] [stderr]    |                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 |         red = "\x1B[31m",
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |         cyan = "\x1B[36m"
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:18:18
[INFO] [stderr]    |
[INFO] [stderr] 18 |         yellow = "\x1B[33m",
[INFO] [stderr]    |                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |         green = "\x1B[32m",
[INFO] [stderr]    |                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:20:15
[INFO] [stderr]    |
[INFO] [stderr] 20 |         red = "\x1B[31m"
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:22:62
[INFO] [stderr]    |
[INFO] [stderr] 22 |     println!("@=========================@{reset}\n", reset = "\x1B[0m");
[INFO] [stderr]    |                                                              ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]  --> src/main.rs:8:62
[INFO] [stderr]   |
[INFO] [stderr] 8 |     println!("{yellow}@=========================@", yellow = "\x1B[33m");
[INFO] [stderr]   |                                                              ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:11:18
[INFO] [stderr]    |
[INFO] [stderr] 11 |         yellow = "\x1B[33m",
[INFO] [stderr]    |                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |         green = "\x1B[32m",
[INFO] [stderr]    |                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 |         red = "\x1B[31m",
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |         cyan = "\x1B[36m"
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:18:18
[INFO] [stderr]    |
[INFO] [stderr] 18 |         yellow = "\x1B[33m",
[INFO] [stderr]    |                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |         green = "\x1B[32m",
[INFO] [stderr]    |                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:20:15
[INFO] [stderr]    |
[INFO] [stderr] 20 |         red = "\x1B[31m"
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]   --> src/main.rs:22:62
[INFO] [stderr]    |
[INFO] [stderr] 22 |     println!("@=========================@{reset}\n", reset = "\x1B[0m");
[INFO] [stderr]    |                                                              ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d1.rs:9:9
[INFO] [stderr]    |
[INFO] [stderr] 9  | /         return (
[INFO] [stderr] 10 | |             String::from("Add a series of numbers"),
[INFO] [stderr] 11 | |             String::from("Find first repeated sum"),
[INFO] [stderr] 12 | |         );
[INFO] [stderr]    | |__________^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 9  |         (
[INFO] [stderr] 10 |             String::from("Add a series of numbers"),
[INFO] [stderr] 11 |             String::from("Find first repeated sum"),
[INFO] [stderr] 12 |         )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d1.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |         return res;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `res`
[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/puzzles/d1.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         return res;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `res`
[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/puzzles/d2.rs:9:5
[INFO] [stderr]    |
[INFO] [stderr] 9  | /     return (
[INFO] [stderr] 10 | |       String::from("Finds a checksum from IDs"),
[INFO] [stderr] 11 | |       String::from("Find IDs one step apart"),
[INFO] [stderr] 12 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 9  |     (
[INFO] [stderr] 10 |       String::from("Finds a checksum from IDs"),
[INFO] [stderr] 11 |       String::from("Find IDs one step apart"),
[INFO] [stderr] 12 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d2.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     return (two_count * three_count).to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(two_count * three_count).to_string()`
[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/puzzles/d2.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     return String::from("No match found");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from("No match found")`
[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/puzzles/d2.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     return (two, three);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(two, three)`
[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/puzzles/d2.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     return (misses == 1, matches);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(misses == 1, matches)`
[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/puzzles/d3.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     return (
[INFO] [stderr] 26 | |       String::from("Find overlapping coordinates"),
[INFO] [stderr] 27 | |       String::from("Find distinct coordinates"),
[INFO] [stderr] 28 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 25 |     (
[INFO] [stderr] 26 |       String::from("Find overlapping coordinates"),
[INFO] [stderr] 27 |       String::from("Find distinct coordinates"),
[INFO] [stderr] 28 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d3.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     return count.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `count.to_string()`
[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/puzzles/d3.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     return id.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `id.to_string()`
[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/puzzles/d3.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     return (id, pos, dim);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(id, pos, dim)`
[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/puzzles/d3.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     return map;
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `map`
[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/puzzles/d4.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     return highest_minute;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `highest_minute`
[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/puzzles/d4.rs:50:7
[INFO] [stderr]    |
[INFO] [stderr] 50 |       return *count;
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: remove `return` as shown: `*count`
[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/puzzles/d4.rs:52:7
[INFO] [stderr]    |
[INFO] [stderr] 52 |       return 0;
[INFO] [stderr]    |       ^^^^^^^^^ help: remove `return` as shown: `0`
[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/puzzles/d4.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 | /     return (
[INFO] [stderr] 62 | |       String::from("Find when a guard is asleep"),
[INFO] [stderr] 63 | |       String::from("Find the sleepiest guard"),
[INFO] [stderr] 64 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 61 |     (
[INFO] [stderr] 62 |       String::from("Find when a guard is asleep"),
[INFO] [stderr] 63 |       String::from("Find the sleepiest guard"),
[INFO] [stderr] 64 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d4.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     return (sleepiest.id * highest_minute).to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(sleepiest.id * highest_minute).to_string()`
[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/puzzles/d4.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     return (highest_minute * highest_guard.id).to_string();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(highest_minute * highest_guard.id).to_string()`
[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/puzzles/d4.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 | /     return LogEntry {
[INFO] [stderr] 147 | |       entry_type,
[INFO] [stderr] 148 | |       date,
[INFO] [stderr] 149 | |       hour,
[INFO] [stderr] 150 | |       minute,
[INFO] [stderr] 151 | |       id,
[INFO] [stderr] 152 | |     };
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 146 |     LogEntry {
[INFO] [stderr] 147 |       entry_type,
[INFO] [stderr] 148 |       date,
[INFO] [stderr] 149 |       hour,
[INFO] [stderr] 150 |       minute,
[INFO] [stderr] 151 |       id,
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/puzzles/d4.rs:207:5
[INFO] [stderr]     |
[INFO] [stderr] 207 |     return guard_map;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `guard_map`
[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/puzzles/d5.rs:7:5
[INFO] [stderr]    |
[INFO] [stderr] 7  | /     return (
[INFO] [stderr] 8  | |       String::from("Eliminate differing cases"),
[INFO] [stderr] 9  | |       String::from("Find efficient elimination"),
[INFO] [stderr] 10 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 7  |     (
[INFO] [stderr] 8  |       String::from("Eliminate differing cases"),
[INFO] [stderr] 9  |       String::from("Find efficient elimination"),
[INFO] [stderr] 10 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d5.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     return self.react(input).to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.react(input).to_string()`
[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/puzzles/d5.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     return lengths[0].to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `lengths[0].to_string()`
[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/puzzles/d5.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     return chars.len();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `chars.len()`
[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/puzzles/d5.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     return input.replace(lower[0], "").replace(upper[0], "");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `input.replace(lower[0], "").replace(upper[0], "")`
[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/puzzles/d6.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | /     return (
[INFO] [stderr] 9  | |       String::from("Find furthest points"),
[INFO] [stderr] 10 | |       String::from("Find closest points"),
[INFO] [stderr] 11 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 8  |     (
[INFO] [stderr] 9  |       String::from("Find furthest points"),
[INFO] [stderr] 10 |       String::from("Find closest points"),
[INFO] [stderr] 11 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d6.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     return largest_point.area.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `largest_point.area.to_string()`
[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/puzzles/d6.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     return area_sum.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `area_sum.to_string()`
[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/puzzles/d6.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     return points;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `points`
[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/puzzles/d6.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     return point;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `point`
[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/puzzles/d6.rs:179:5
[INFO] [stderr]     |
[INFO] [stderr] 179 |     return (self.x - target.x).abs() + (self.y - target.y).abs();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(self.x - target.x).abs() + (self.y - target.y).abs()`
[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/puzzles/d7.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | /     return (
[INFO] [stderr] 11 | |       String::from("To be determined..."),
[INFO] [stderr] 12 | |       String::from("To be determined..."),
[INFO] [stderr] 13 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 10 |     (
[INFO] [stderr] 11 |       String::from("To be determined..."),
[INFO] [stderr] 12 |       String::from("To be determined..."),
[INFO] [stderr] 13 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d7.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     return completed.join("");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `completed.join("")`
[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/puzzles/d7.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     return seconds.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `seconds.to_string()`
[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/puzzles/d7.rs:120:5
[INFO] [stderr]     |
[INFO] [stderr] 120 |     return map;
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `map`
[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/puzzles/d7.rs:149:5
[INFO] [stderr]     |
[INFO] [stderr] 149 |     return id;
[INFO] [stderr]     |     ^^^^^^^^^^ help: remove `return` as shown: `id`
[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/puzzles/d7.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     return 60 + i;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `60 + i`
[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: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/puzzles/d8.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d8.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     return (String::from("Placeholder"), String::from("Placeholder"));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(String::from("Placeholder"), String::from("Placeholder"))`
[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/puzzles/d8.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     return String::from("Placeholder");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from("Placeholder")`
[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/puzzles/d8.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     return String::from("Placeholder");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from("Placeholder")`
[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/puzzles/d8.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     return elements;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `elements`
[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/puzzles/mod.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     return true;
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[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/puzzles/d1.rs:9:9
[INFO] [stderr]    |
[INFO] [stderr] 9  | /         return (
[INFO] [stderr] 10 | |             String::from("Add a series of numbers"),
[INFO] [stderr] 11 | |             String::from("Find first repeated sum"),
[INFO] [stderr] 12 | |         );
[INFO] [stderr]    | |__________^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 9  |         (
[INFO] [stderr] 10 |             String::from("Add a series of numbers"),
[INFO] [stderr] 11 |             String::from("Find first repeated sum"),
[INFO] [stderr] 12 |         )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d1.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |         return res;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `res`
[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/puzzles/d1.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         return res;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `res`
[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/puzzles/d2.rs:9:5
[INFO] [stderr]    |
[INFO] [stderr] 9  | /     return (
[INFO] [stderr] 10 | |       String::from("Finds a checksum from IDs"),
[INFO] [stderr] 11 | |       String::from("Find IDs one step apart"),
[INFO] [stderr] 12 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 9  |     (
[INFO] [stderr] 10 |       String::from("Finds a checksum from IDs"),
[INFO] [stderr] 11 |       String::from("Find IDs one step apart"),
[INFO] [stderr] 12 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d2.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     return (two_count * three_count).to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(two_count * three_count).to_string()`
[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/puzzles/d2.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     return String::from("No match found");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from("No match found")`
[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/puzzles/d2.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     return (two, three);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(two, three)`
[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/puzzles/d2.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     return (misses == 1, matches);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(misses == 1, matches)`
[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/puzzles/d3.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     return (
[INFO] [stderr] 26 | |       String::from("Find overlapping coordinates"),
[INFO] [stderr] 27 | |       String::from("Find distinct coordinates"),
[INFO] [stderr] 28 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 25 |     (
[INFO] [stderr] 26 |       String::from("Find overlapping coordinates"),
[INFO] [stderr] 27 |       String::from("Find distinct coordinates"),
[INFO] [stderr] 28 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d3.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     return count.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `count.to_string()`
[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/puzzles/d3.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     return id.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `id.to_string()`
[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/puzzles/d3.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     return (id, pos, dim);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(id, pos, dim)`
[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/puzzles/d3.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     return map;
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `map`
[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/puzzles/d4.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     return highest_minute;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `highest_minute`
[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/puzzles/d4.rs:50:7
[INFO] [stderr]    |
[INFO] [stderr] 50 |       return *count;
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: remove `return` as shown: `*count`
[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/puzzles/d4.rs:52:7
[INFO] [stderr]    |
[INFO] [stderr] 52 |       return 0;
[INFO] [stderr]    |       ^^^^^^^^^ help: remove `return` as shown: `0`
[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/puzzles/d4.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 | /     return (
[INFO] [stderr] 62 | |       String::from("Find when a guard is asleep"),
[INFO] [stderr] 63 | |       String::from("Find the sleepiest guard"),
[INFO] [stderr] 64 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 61 |     (
[INFO] [stderr] 62 |       String::from("Find when a guard is asleep"),
[INFO] [stderr] 63 |       String::from("Find the sleepiest guard"),
[INFO] [stderr] 64 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d4.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     return (sleepiest.id * highest_minute).to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(sleepiest.id * highest_minute).to_string()`
[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/puzzles/d4.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     return (highest_minute * highest_guard.id).to_string();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(highest_minute * highest_guard.id).to_string()`
[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/puzzles/d4.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 | /     return LogEntry {
[INFO] [stderr] 147 | |       entry_type,
[INFO] [stderr] 148 | |       date,
[INFO] [stderr] 149 | |       hour,
[INFO] [stderr] 150 | |       minute,
[INFO] [stderr] 151 | |       id,
[INFO] [stderr] 152 | |     };
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 146 |     LogEntry {
[INFO] [stderr] 147 |       entry_type,
[INFO] [stderr] 148 |       date,
[INFO] [stderr] 149 |       hour,
[INFO] [stderr] 150 |       minute,
[INFO] [stderr] 151 |       id,
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/puzzles/d4.rs:207:5
[INFO] [stderr]     |
[INFO] [stderr] 207 |     return guard_map;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `guard_map`
[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/puzzles/d5.rs:7:5
[INFO] [stderr]    |
[INFO] [stderr] 7  | /     return (
[INFO] [stderr] 8  | |       String::from("Eliminate differing cases"),
[INFO] [stderr] 9  | |       String::from("Find efficient elimination"),
[INFO] [stderr] 10 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 7  |     (
[INFO] [stderr] 8  |       String::from("Eliminate differing cases"),
[INFO] [stderr] 9  |       String::from("Find efficient elimination"),
[INFO] [stderr] 10 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d5.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     return self.react(input).to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.react(input).to_string()`
[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/puzzles/d5.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     return lengths[0].to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `lengths[0].to_string()`
[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/puzzles/d5.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     return chars.len();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `chars.len()`
[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/puzzles/d5.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     return input.replace(lower[0], "").replace(upper[0], "");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `input.replace(lower[0], "").replace(upper[0], "")`
[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/puzzles/d6.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | /     return (
[INFO] [stderr] 9  | |       String::from("Find furthest points"),
[INFO] [stderr] 10 | |       String::from("Find closest points"),
[INFO] [stderr] 11 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 8  |     (
[INFO] [stderr] 9  |       String::from("Find furthest points"),
[INFO] [stderr] 10 |       String::from("Find closest points"),
[INFO] [stderr] 11 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d6.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     return largest_point.area.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `largest_point.area.to_string()`
[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/puzzles/d6.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     return area_sum.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `area_sum.to_string()`
[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/puzzles/d6.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     return points;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `points`
[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/puzzles/d6.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     return point;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `point`
[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/puzzles/d6.rs:179:5
[INFO] [stderr]     |
[INFO] [stderr] 179 |     return (self.x - target.x).abs() + (self.y - target.y).abs();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(self.x - target.x).abs() + (self.y - target.y).abs()`
[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/puzzles/d7.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | /     return (
[INFO] [stderr] 11 | |       String::from("To be determined..."),
[INFO] [stderr] 12 | |       String::from("To be determined..."),
[INFO] [stderr] 13 | |     );
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 10 |     (
[INFO] [stderr] 11 |       String::from("To be determined..."),
[INFO] [stderr] 12 |       String::from("To be determined..."),
[INFO] [stderr] 13 |     )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d7.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     return completed.join("");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `completed.join("")`
[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/puzzles/d7.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     return seconds.to_string();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `seconds.to_string()`
[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/puzzles/d7.rs:120:5
[INFO] [stderr]     |
[INFO] [stderr] 120 |     return map;
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `map`
[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/puzzles/d7.rs:149:5
[INFO] [stderr]     |
[INFO] [stderr] 149 |     return id;
[INFO] [stderr]     |     ^^^^^^^^^^ help: remove `return` as shown: `id`
[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/puzzles/d7.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     return 60 + i;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `60 + i`
[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: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/puzzles/d8.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/puzzles/d8.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     return (String::from("Placeholder"), String::from("Placeholder"));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(String::from("Placeholder"), String::from("Placeholder"))`
[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/puzzles/d8.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     return String::from("Placeholder");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from("Placeholder")`
[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/puzzles/d8.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     return String::from("Placeholder");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from("Placeholder")`
[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/puzzles/d8.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     return elements;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `elements`
[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/puzzles/mod.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     return true;
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[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: unused variable: `state`
[INFO] [stderr]   --> src/puzzles/d8.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut state: State = State::HEADER_CHILD;
[INFO] [stderr]    |             ^^^^^ help: consider using `_state` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child_nodes`
[INFO] [stderr]   --> src/puzzles/d8.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut child_nodes: u32;
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider using `_child_nodes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `meta_elements`
[INFO] [stderr]   --> src/puzzles/d8.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut meta_elements: u32;
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: consider using `_meta_elements` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/puzzles/d8.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     for i in elements {}
[INFO] [stderr]    |         ^ help: consider using `_i` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elements`
[INFO] [stderr]   --> src/puzzles/d8.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let elements = self.parse(&input);
[INFO] [stderr]    |         ^^^^^^^^ help: consider using `_elements` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/puzzles/d8.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut state: State = State::HEADER_CHILD;
[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/puzzles/d8.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut child_nodes: u32;
[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/puzzles/d8.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut meta_elements: u32;
[INFO] [stderr]    |         ----^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]  --> src/puzzles/d8.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct Node {
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HEADER_META`
[INFO] [stderr]   --> src/puzzles/d8.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   HEADER_META,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `META`
[INFO] [stderr]   --> src/puzzles/d8.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   META,
[INFO] [stderr]    |   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/puzzles/d1.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 | /                 if map.contains_key(&result) {
[INFO] [stderr] 43 | |                     cont = false;
[INFO] [stderr] 44 | |                     break;
[INFO] [stderr] 45 | |                 } else {
[INFO] [stderr] 46 | |                     map.insert(result, true);
[INFO] [stderr] 47 | |                 }
[INFO] [stderr]    | |_________________^ help: consider using: `map.entry(result)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's values
[INFO] [stderr]   --> src/puzzles/d2.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |     for (_, val) in &map {
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::for_kv_map)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 66 |     for val in map.values() {
[INFO] [stderr]    |         ^^^    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's values
[INFO] [stderr]   --> src/puzzles/d3.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |     for (_, val) in &map {
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 34 |     for val in map.values() {
[INFO] [stderr]    |         ^^^    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/puzzles/d3.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |         if good == false {
[INFO] [stderr]    |            ^^^^^^^^^^^^^ help: try simplifying it as shown: `!good`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against true are unnecessary
[INFO] [stderr]   --> src/puzzles/d3.rs:64:10
[INFO] [stderr]    |
[INFO] [stderr] 64 |       if good == true {
[INFO] [stderr]    |          ^^^^^^^^^^^^ help: try simplifying it as shown: `good`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/puzzles/d3.rs:79:39
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let sn3: Vec<&str> = sn2[0].split(",").collect();
[INFO] [stderr]    |                                       ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/puzzles/d3.rs:80:39
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let sn4: Vec<&str> = sn2[1].split("x").collect();
[INFO] [stderr]    |                                       ^^^ help: try using a char instead: `'x'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/puzzles/d4.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 |       if count > &highest_count {
[INFO] [stderr]    |          ^^^^^^^^--------------
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: use the right value directly: `highest_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/puzzles/d4.rs:41:44
[INFO] [stderr]    |
[INFO] [stderr] 41 |       } else if count == &highest_count && minute < &highest_minute {
[INFO] [stderr]    |                                            ^^^^^^^^^---------------
[INFO] [stderr]    |                                                     |
[INFO] [stderr]    |                                                     help: use the right value directly: `highest_minute`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/puzzles/d4.rs:49:19
[INFO] [stderr]    |
[INFO] [stderr] 49 |       let count = self.minute_map.get(&minute).unwrap();
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.minute_map[&minute]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> src/puzzles/d4.rs:127:5
[INFO] [stderr]     |
[INFO] [stderr] 127 | /     for cap in entry_re.captures_iter(line) {
[INFO] [stderr] 128 | |       date = cap[1].to_string();
[INFO] [stderr] 129 | |       hour = cap[2].parse().unwrap();
[INFO] [stderr] 130 | |       minute = cap[3].parse().unwrap();
[INFO] [stderr] 131 | |       text = cap[4].parse().unwrap();
[INFO] [stderr] 132 | |       break;
[INFO] [stderr] 133 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> src/puzzles/d4.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 | /         for cap in shift_re.captures_iter(text.as_ref()) {
[INFO] [stderr] 140 | |           id = cap[1].parse().unwrap();
[INFO] [stderr] 141 | |           break;
[INFO] [stderr] 142 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/puzzles/d5.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let mut chars: Vec<char> = input.chars().into_iter().collect();
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `input.chars()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's values
[INFO] [stderr]   --> src/puzzles/d6.rs:61:27
[INFO] [stderr]    |
[INFO] [stderr] 61 |         for (_, point) in &points {
[INFO] [stderr]    |                           ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 61 |         for point in points.values() {
[INFO] [stderr]    |             ^^^^^    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/puzzles/d8.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut state: State = State::HEADER_CHILD;
[INFO] [stderr]    |             ^^^^^ help: consider using `_state` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child_nodes`
[INFO] [stderr]   --> src/puzzles/d8.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut child_nodes: u32;
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider using `_child_nodes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `meta_elements`
[INFO] [stderr]   --> src/puzzles/d8.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut meta_elements: u32;
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: consider using `_meta_elements` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/puzzles/d8.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     for i in elements {}
[INFO] [stderr]    |         ^ help: consider using `_i` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elements`
[INFO] [stderr]   --> src/puzzles/d8.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let elements = self.parse(&input);
[INFO] [stderr]    |         ^^^^^^^^ help: consider using `_elements` instead
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/puzzles/d6.rs:74:33
[INFO] [stderr]    |
[INFO] [stderr] 74 |   fn parse_points(&self, input: &String, max_point: &mut Point) -> HashMap<String, Point> {
[INFO] [stderr]    |                                 ^^^^^^^ help: change this to: `&str`
[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: you seem to want to iterate on a map's values
[INFO] [stderr]    --> src/puzzles/d6.rs:118:23
[INFO] [stderr]     |
[INFO] [stderr] 118 |     for (_, point) in points {
[INFO] [stderr]     |                       ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]     |
[INFO] [stderr] 118 |     for point in points.values() {
[INFO] [stderr]     |         ^^^^^    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 |       if task.before.len() == 0 {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `task.before.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:26:11
[INFO] [stderr]    |
[INFO] [stderr] 26 |     while queue.len() > 0 {
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!queue.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 |       if task.before.len() == 0 {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `task.before.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/puzzles/d7.rs:50:22
[INFO] [stderr]    |
[INFO] [stderr] 50 |           let task = map.get(&t).unwrap().clone();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^ help: try this: `&map[&t]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/puzzles/d7.rs:52:32
[INFO] [stderr]    |
[INFO] [stderr] 52 |             let task2: &Task = map.get(&tid).unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&map[&tid]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:71:28
[INFO] [stderr]    |
[INFO] [stderr] 71 |       while workers > 0 && queue.len() > 0 {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!queue.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:81:10
[INFO] [stderr]    |
[INFO] [stderr] 81 |       if queue.len() == 0 && workers == 5 {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `queue.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/puzzles/d7.rs:91:26
[INFO] [stderr]    |
[INFO] [stderr] 91 |   fn parse(&self, input: &String) -> HashMap<String, Task> {
[INFO] [stderr]    |                          ^^^^^^^ help: change this to: `&str`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/puzzles/d7.rs:127:16
[INFO] [stderr]     |
[INFO] [stderr] 127 |     completed: &Vec<String>,
[INFO] [stderr]     |                ^^^^^^^^^^^^ help: change this to: `&[String]`
[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: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/puzzles/d7.rs:152:31
[INFO] [stderr]     |
[INFO] [stderr] 152 |   fn time_required(&self, id: &String) -> i32 {
[INFO] [stderr]     |                               ^^^^^^^ help: change this to: `&str`
[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: variant `HEADER_CHILD` should have a camel case name such as `HeaderChild`
[INFO] [stderr]   --> src/puzzles/d8.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   HEADER_CHILD,
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `HEADER_META` should have a camel case name such as `HeaderMeta`
[INFO] [stderr]   --> src/puzzles/d8.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   HEADER_META,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/puzzles/d8.rs:41:26
[INFO] [stderr]    |
[INFO] [stderr] 41 |   fn parse(&self, input: &String) -> Vec<u32> {
[INFO] [stderr]    |                          ^^^^^^^ help: change this to: `&str`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/puzzles/d8.rs:43:28
[INFO] [stderr]    |
[INFO] [stderr] 43 |     for set in input.split(" ") {
[INFO] [stderr]    |                            ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]   --> src/puzzles/mod.rs:65:19
[INFO] [stderr]    |
[INFO] [stderr] 65 |     if trimmed == String::from("q") {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^ help: try: `"q"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `adventofcode2018`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/puzzles/d8.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut state: State = State::HEADER_CHILD;
[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/puzzles/d8.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut child_nodes: u32;
[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/puzzles/d8.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut meta_elements: u32;
[INFO] [stderr]    |         ----^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]  --> src/puzzles/d8.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct Node {
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HEADER_META`
[INFO] [stderr]   --> src/puzzles/d8.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   HEADER_META,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `META`
[INFO] [stderr]   --> src/puzzles/d8.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   META,
[INFO] [stderr]    |   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/puzzles/d1.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 | /                 if map.contains_key(&result) {
[INFO] [stderr] 43 | |                     cont = false;
[INFO] [stderr] 44 | |                     break;
[INFO] [stderr] 45 | |                 } else {
[INFO] [stderr] 46 | |                     map.insert(result, true);
[INFO] [stderr] 47 | |                 }
[INFO] [stderr]    | |_________________^ help: consider using: `map.entry(result)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's values
[INFO] [stderr]   --> src/puzzles/d2.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |     for (_, val) in &map {
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::for_kv_map)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 66 |     for val in map.values() {
[INFO] [stderr]    |         ^^^    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's values
[INFO] [stderr]   --> src/puzzles/d3.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |     for (_, val) in &map {
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 34 |     for val in map.values() {
[INFO] [stderr]    |         ^^^    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/puzzles/d3.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |         if good == false {
[INFO] [stderr]    |            ^^^^^^^^^^^^^ help: try simplifying it as shown: `!good`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against true are unnecessary
[INFO] [stderr]   --> src/puzzles/d3.rs:64:10
[INFO] [stderr]    |
[INFO] [stderr] 64 |       if good == true {
[INFO] [stderr]    |          ^^^^^^^^^^^^ help: try simplifying it as shown: `good`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/puzzles/d3.rs:79:39
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let sn3: Vec<&str> = sn2[0].split(",").collect();
[INFO] [stderr]    |                                       ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/puzzles/d3.rs:80:39
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let sn4: Vec<&str> = sn2[1].split("x").collect();
[INFO] [stderr]    |                                       ^^^ help: try using a char instead: `'x'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/puzzles/d4.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 |       if count > &highest_count {
[INFO] [stderr]    |          ^^^^^^^^--------------
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: use the right value directly: `highest_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/puzzles/d4.rs:41:44
[INFO] [stderr]    |
[INFO] [stderr] 41 |       } else if count == &highest_count && minute < &highest_minute {
[INFO] [stderr]    |                                            ^^^^^^^^^---------------
[INFO] [stderr]    |                                                     |
[INFO] [stderr]    |                                                     help: use the right value directly: `highest_minute`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/puzzles/d4.rs:49:19
[INFO] [stderr]    |
[INFO] [stderr] 49 |       let count = self.minute_map.get(&minute).unwrap();
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.minute_map[&minute]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> src/puzzles/d4.rs:127:5
[INFO] [stderr]     |
[INFO] [stderr] 127 | /     for cap in entry_re.captures_iter(line) {
[INFO] [stderr] 128 | |       date = cap[1].to_string();
[INFO] [stderr] 129 | |       hour = cap[2].parse().unwrap();
[INFO] [stderr] 130 | |       minute = cap[3].parse().unwrap();
[INFO] [stderr] 131 | |       text = cap[4].parse().unwrap();
[INFO] [stderr] 132 | |       break;
[INFO] [stderr] 133 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> src/puzzles/d4.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 | /         for cap in shift_re.captures_iter(text.as_ref()) {
[INFO] [stderr] 140 | |           id = cap[1].parse().unwrap();
[INFO] [stderr] 141 | |           break;
[INFO] [stderr] 142 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/puzzles/d5.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let mut chars: Vec<char> = input.chars().into_iter().collect();
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `input.chars()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's values
[INFO] [stderr]   --> src/puzzles/d6.rs:61:27
[INFO] [stderr]    |
[INFO] [stderr] 61 |         for (_, point) in &points {
[INFO] [stderr]    |                           ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 61 |         for point in points.values() {
[INFO] [stderr]    |             ^^^^^    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/puzzles/d6.rs:74:33
[INFO] [stderr]    |
[INFO] [stderr] 74 |   fn parse_points(&self, input: &String, max_point: &mut Point) -> HashMap<String, Point> {
[INFO] [stderr]    |                                 ^^^^^^^ help: change this to: `&str`
[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: you seem to want to iterate on a map's values
[INFO] [stderr]    --> src/puzzles/d6.rs:118:23
[INFO] [stderr]     |
[INFO] [stderr] 118 |     for (_, point) in points {
[INFO] [stderr]     |                       ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]     |
[INFO] [stderr] 118 |     for point in points.values() {
[INFO] [stderr]     |         ^^^^^    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 |       if task.before.len() == 0 {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `task.before.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:26:11
[INFO] [stderr]    |
[INFO] [stderr] 26 |     while queue.len() > 0 {
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!queue.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 |       if task.before.len() == 0 {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `task.before.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/puzzles/d7.rs:50:22
[INFO] [stderr]    |
[INFO] [stderr] 50 |           let task = map.get(&t).unwrap().clone();
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^ help: try this: `&map[&t]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/puzzles/d7.rs:52:32
[INFO] [stderr]    |
[INFO] [stderr] 52 |             let task2: &Task = map.get(&tid).unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&map[&tid]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:71:28
[INFO] [stderr]    |
[INFO] [stderr] 71 |       while workers > 0 && queue.len() > 0 {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!queue.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/puzzles/d7.rs:81:10
[INFO] [stderr]    |
[INFO] [stderr] 81 |       if queue.len() == 0 && workers == 5 {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `queue.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/puzzles/d7.rs:91:26
[INFO] [stderr]    |
[INFO] [stderr] 91 |   fn parse(&self, input: &String) -> HashMap<String, Task> {
[INFO] [stderr]    |                          ^^^^^^^ help: change this to: `&str`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/puzzles/d7.rs:127:16
[INFO] [stderr]     |
[INFO] [stderr] 127 |     completed: &Vec<String>,
[INFO] [stderr]     |                ^^^^^^^^^^^^ help: change this to: `&[String]`
[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: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]    --> src/puzzles/d7.rs:152:31
[INFO] [stderr]     |
[INFO] [stderr] 152 |   fn time_required(&self, id: &String) -> i32 {
[INFO] [stderr]     |                               ^^^^^^^ help: change this to: `&str`
[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: variant `HEADER_CHILD` should have a camel case name such as `HeaderChild`
[INFO] [stderr]   --> src/puzzles/d8.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   HEADER_CHILD,
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `HEADER_META` should have a camel case name such as `HeaderMeta`
[INFO] [stderr]   --> src/puzzles/d8.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   HEADER_META,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/puzzles/d8.rs:41:26
[INFO] [stderr]    |
[INFO] [stderr] 41 |   fn parse(&self, input: &String) -> Vec<u32> {
[INFO] [stderr]    |                          ^^^^^^^ help: change this to: `&str`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/puzzles/d8.rs:43:28
[INFO] [stderr]    |
[INFO] [stderr] 43 |     for set in input.split(" ") {
[INFO] [stderr]    |                            ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this creates an owned instance just for comparison
[INFO] [stderr]   --> src/puzzles/mod.rs:65:19
[INFO] [stderr]    |
[INFO] [stderr] 65 |     if trimmed == String::from("q") {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^ help: try: `"q"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `adventofcode2018`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "859445fb4300d4c2390accde340e445170552ccd9bc0c107c03bf829da48b4e9"`
[INFO] running `"docker" "rm" "-f" "859445fb4300d4c2390accde340e445170552ccd9bc0c107c03bf829da48b4e9"`
[INFO] [stdout] 859445fb4300d4c2390accde340e445170552ccd9bc0c107c03bf829da48b4e9