[INFO] cloning repository https://github.com/j1ng3r/advent-of-code-2016
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/j1ng3r/advent-of-code-2016" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj1ng3r%2Fadvent-of-code-2016", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj1ng3r%2Fadvent-of-code-2016'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d067b50c67077d82676c43c8fd74a869d66c0f0a
[INFO] linting j1ng3r/advent-of-code-2016 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj1ng3r%2Fadvent-of-code-2016" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/j1ng3r/advent-of-code-2016
[INFO] finished tweaking git repo https://github.com/j1ng3r/advent-of-code-2016
[INFO] tweaked toml for git repo https://github.com/j1ng3r/advent-of-code-2016 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/j1ng3r/advent-of-code-2016 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/j1ng3r/advent-of-code-2016 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29d5a8f163a56530cd833384fafe2a9c2d2709f5fa7f96c05217e30895d30fec
[INFO] running `Command { std: "docker" "start" "-a" "29d5a8f163a56530cd833384fafe2a9c2d2709f5fa7f96c05217e30895d30fec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29d5a8f163a56530cd833384fafe2a9c2d2709f5fa7f96c05217e30895d30fec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29d5a8f163a56530cd833384fafe2a9c2d2709f5fa7f96c05217e30895d30fec", kill_on_drop: false }`
[INFO] [stdout] 29d5a8f163a56530cd833384fafe2a9c2d2709f5fa7f96c05217e30895d30fec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9be7b3e0a9b032c6ba4cc8a4066414a96f69201cc0313559e0b7d07e692d7113
[INFO] running `Command { std: "docker" "start" "-a" "9be7b3e0a9b032c6ba4cc8a4066414a96f69201cc0313559e0b7d07e692d7113", kill_on_drop: false }`
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking advent-of-code-2016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> day03/util.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | /    return match maybe_x {
[INFO] [stdout] 6 | |       Ok(x) => Some(x),
[INFO] [stdout] 7 | |       Err(_) => None
[INFO] [stdout] 8 | |    }
[INFO] [stdout]   | |____^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]   = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 5 ~    match maybe_x {
[INFO] [stdout] 6 +       Ok(x) => Some(x),
[INFO] [stdout] 7 +       Err(_) => None
[INFO] [stdout] 8 +    }
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `ok`
[INFO] [stdout]  --> day03/util.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |      return match maybe_x {
[INFO] [stdout]   |  ___________^
[INFO] [stdout] 6 | |       Ok(x) => Some(x),
[INFO] [stdout] 7 | |       Err(_) => None
[INFO] [stdout] 8 | |    }
[INFO] [stdout]   | |____^ help: replace with: `maybe_x.ok()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_err
[INFO] [stdout]   = note: `#[warn(clippy::manual_ok_err)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 |    return option_from_result::<u32, std::num::ParseIntError>(s.parse::<u32>());
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 12 -    return option_from_result::<u32, std::num::ParseIntError>(s.parse::<u32>());
[INFO] [stdout] 12 +    option_from_result::<u32, std::num::ParseIntError>(s.parse::<u32>())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 |    return i.filter(|x| x.is_some()).map(|x| x.unwrap()).collect();
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 16 -    return i.filter(|x| x.is_some()).map(|x| x.unwrap()).collect();
[INFO] [stdout] 16 +    i.filter(|x| x.is_some()).map(|x| x.unwrap()).collect()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `filter` for `Some` followed by `unwrap`
[INFO] [stdout]   --> day03/util.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |    return i.filter(|x| x.is_some()).map(|x| x.unwrap()).collect();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `flatten` instead: `flatten()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_filter_map
[INFO] [stdout]    = note: `#[warn(clippy::option_filter_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | /       return Some(Trpl {
[INFO] [stdout] 28 | |          a: to_u32(abc.get(0)?)?,
[INFO] [stdout] 29 | |          b: to_u32(abc.get(1)?)?,
[INFO] [stdout] 30 | |          c: to_u32(abc.get(2)?)?
[INFO] [stdout] 31 | |       });
[INFO] [stdout]    | |________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 27 ~       Some(Trpl {
[INFO] [stdout] 28 +          a: to_u32(abc.get(0)?)?,
[INFO] [stdout] 29 +          b: to_u32(abc.get(1)?)?,
[INFO] [stdout] 30 +          c: to_u32(abc.get(2)?)?
[INFO] [stdout] 31 ~       })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: accessing first element with `abc.get(0)`
[INFO] [stdout]   --> day03/util.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |          a: to_u32(abc.get(0)?)?,
[INFO] [stdout]    |                    ^^^^^^^^^^ help: try: `abc.first()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first
[INFO] [stdout]    = note: `#[warn(clippy::get_first)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day03/util.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 35 | |       && t.a + t.b > t.c
[INFO] [stdout] 36 | |       && t.b + t.c > t.a
[INFO] [stdout] 37 | |       && t.c + t.a > t.b
[INFO] [stdout]    | |________________________^ help: try: `t.a + t.b > t.c && t.b + t.c > t.a && t.c + t.a > t.b`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day03/util.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 35 | |       && t.a + t.b > t.c
[INFO] [stdout] 36 | |       && t.b + t.c > t.a
[INFO] [stdout]    | |________________________^ help: try: `t.a + t.b > t.c && t.b + t.c > t.a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day03/util.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 35 | |       && t.a + t.b > t.c
[INFO] [stdout]    | |________________________^ help: try: `t.a + t.b > t.c`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | /       return true
[INFO] [stdout] 35 | |       && t.a + t.b > t.c
[INFO] [stdout] 36 | |       && t.b + t.c > t.a
[INFO] [stdout] 37 | |       && t.c + t.a > t.b
[INFO] [stdout]    | |________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 34 ~       true
[INFO] [stdout] 35 +       && t.a + t.b > t.c
[INFO] [stdout] 36 +       && t.b + t.c > t.a
[INFO] [stdout] 37 +       && t.c + t.a > t.b
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 |    return input;
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 44 -    return input;
[INFO] [stdout] 44 +    input
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/puzzle1.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 |    return collect_options(input.trim().split("\n").map(Trpl::from_str));
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -    return collect_options(input.trim().split("\n").map(Trpl::from_str));
[INFO] [stdout] 10 +    collect_options(input.trim().split("\n").map(Trpl::from_str))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/puzzle2.rs:7:7
[INFO] [stdout]    |
[INFO] [stdout]  7 | /       return Trpl {
[INFO] [stdout]  8 | |          a: 0,
[INFO] [stdout]  9 | |          b: 0,
[INFO] [stdout] 10 | |          c: 0,
[INFO] [stdout] 11 | |       };
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout]  7 ~       Trpl {
[INFO] [stdout]  8 +          a: 0,
[INFO] [stdout]  9 +          b: 0,
[INFO] [stdout] 10 +          c: 0,
[INFO] [stdout] 11 ~       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/puzzle2.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 |    return v;
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 59 -    return v;
[INFO] [stdout] 59 +    v
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/util.rs:9:7
[INFO] [stdout]    |
[INFO] [stdout]  9 | /       return match c {
[INFO] [stdout] 10 | |          'L' => Some(Dir::L),
[INFO] [stdout] 11 | |          'R' => Some(Dir::R),
[INFO] [stdout] 12 | |          'U' => Some(Dir::U),
[INFO] [stdout] 13 | |          'D' => Some(Dir::D),
[INFO] [stdout] 14 | |          _ => None,
[INFO] [stdout] 15 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout]  9 ~       match c {
[INFO] [stdout] 10 +          'L' => Some(Dir::L),
[INFO] [stdout] 11 +          'R' => Some(Dir::R),
[INFO] [stdout] 12 +          'U' => Some(Dir::U),
[INFO] [stdout] 13 +          'D' => Some(Dir::D),
[INFO] [stdout] 14 +          _ => None,
[INFO] [stdout] 15 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/util.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 |       return v;
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 25 -       return v;
[INFO] [stdout] 25 +       v
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> day03/puzzle2.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 | /       match maybe_t {
[INFO] [stdout] 30 | |          Some(t) => match tp {
[INFO] [stdout] 31 | |             TrplPos::A => {
[INFO] [stdout] 32 | |                ta.a = t.a;
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |          None => {}
[INFO] [stdout] 57 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]    = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 29 ~       if let Some(t) = maybe_t { match tp {
[INFO] [stdout] 30 +          TrplPos::A => {
[INFO] [stdout] 31 +             ta.a = t.a;
[INFO] [stdout] 32 +             tb.a = t.b;
[INFO] [stdout] 33 +             tc.a = t.c;
[INFO] [stdout] 34 +             tp = TrplPos::B;
[INFO] [stdout] 35 +          },
[INFO] [stdout] 36 +          TrplPos::B => {
[INFO] [stdout] 37 +             ta.b = t.a;
[INFO] [stdout] 38 +             tb.b = t.b;
[INFO] [stdout] 39 +             tc.b = t.c;
[INFO] [stdout] 40 +             tp = TrplPos::C;
[INFO] [stdout] 41 +          },
[INFO] [stdout] 42 +          TrplPos::C => {
[INFO] [stdout] 43 +             ta.c = t.a;
[INFO] [stdout] 44 +             tb.c = t.b;
[INFO] [stdout] 45 +             tc.c = t.c;
[INFO] [stdout] 46 +             v.push(ta);
[INFO] [stdout] 47 +             v.push(tb);
[INFO] [stdout] 48 +             v.push(tc);
[INFO] [stdout] 49 +             ta = Trpl::new();
[INFO] [stdout] 50 +             tb = Trpl::new();
[INFO] [stdout] 51 +             tc = Trpl::new();
[INFO] [stdout] 52 +             tp = TrplPos::A;
[INFO] [stdout] 53 +          },
[INFO] [stdout] 54 +       } }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> day02/util.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 | /          match Dir::from_char(c) {
[INFO] [stdout] 21 | |             Some(dir) => v.push(dir),
[INFO] [stdout] 22 | |             None => {}
[INFO] [stdout] 23 | |          }
[INFO] [stdout]    | |__________^ help: try: `if let Some(dir) = Dir::from_char(c) { v.push(dir) }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]    = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/util.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 |    return input.trim().split("\n").map(Dir::from_str).collect();
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 32 -    return input.trim().split("\n").map(Dir::from_str).collect();
[INFO] [stdout] 32 +    input.trim().split("\n").map(Dir::from_str).collect()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods with the following characteristics: (`to_*` and `self` type is `Copy`) usually take `self` by value
[INFO] [stdout]   --> day02/puzzle1.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 |    fn to_int(&self) -> i8 {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider choosing a less ambiguous name
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stdout]    = note: `#[warn(clippy::wrong_self_convention)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |       return 1 + self.x + 3*self.y;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 11 -       return 1 + self.x + 3*self.y;
[INFO] [stdout] 11 +       1 + self.x + 3*self.y
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods with the following characteristics: (`to_*` and `self` type is `Copy`) usually take `self` by value
[INFO] [stdout]   --> day02/puzzle1.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |    fn to_string(&self) -> String {
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider choosing a less ambiguous name
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: implementation of inherent method `to_string(&self) -> String` for type `puzzle1::State`
[INFO] [stdout]   --> day02/puzzle1.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | /    fn to_string(&self) -> String {
[INFO] [stdout] 14 | |       return self.to_int().to_string();
[INFO] [stdout] 15 | |    }
[INFO] [stdout]    | |____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: implement trait `Display` for type `puzzle1::State` instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inherent_to_string
[INFO] [stdout]    = note: `#[warn(clippy::inherent_to_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 |       return self.to_int().to_string();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 -       return self.to_int().to_string();
[INFO] [stdout] 14 +       self.to_int().to_string()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |          return 0
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 18 -          return 0
[INFO] [stdout] 18 +          0
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 |          return 2
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 20 -          return 2
[INFO] [stdout] 20 +          2
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 |          return v
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 22 -          return v
[INFO] [stdout] 22 +          v
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | /       return match d {
[INFO] [stdout] 27 | |          Dir::L => State {
[INFO] [stdout] 28 | |             x: State::clamp(self.x - 1),
[INFO] [stdout] 29 | |             y: self.y,
[INFO] [stdout] ...  |
[INFO] [stdout] 42 | |          },
[INFO] [stdout] 43 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 26 ~       match d {
[INFO] [stdout] 27 +          Dir::L => State {
[INFO] [stdout] 28 +             x: State::clamp(self.x - 1),
[INFO] [stdout] 29 +             y: self.y,
[INFO] [stdout] 30 +          },
[INFO] [stdout] 31 +          Dir::R => State {
[INFO] [stdout] 32 +             x: State::clamp(self.x + 1),
[INFO] [stdout] 33 +             y: self.y,
[INFO] [stdout] 34 +          },
[INFO] [stdout] 35 +          Dir::U => State {
[INFO] [stdout] 36 +             x: self.x,
[INFO] [stdout] 37 +             y: State::clamp(self.y - 1),
[INFO] [stdout] 38 +          },
[INFO] [stdout] 39 +          Dir::D => State {
[INFO] [stdout] 40 +             x: self.x,
[INFO] [stdout] 41 +             y: State::clamp(self.y + 1),
[INFO] [stdout] 42 +          },
[INFO] [stdout] 43 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 |       return state;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 50 -       return state;
[INFO] [stdout] 50 +       state
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods with the following characteristics: (`to_*` and `self` type is `Copy`) usually take `self` by value
[INFO] [stdout]   --> day02/puzzle2.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |    fn to_string(&self) -> String {
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider choosing a less ambiguous name
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: implementation of inherent method `to_string(&self) -> String` for type `puzzle2::State`
[INFO] [stdout]   --> day02/puzzle2.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | /    fn to_string(&self) -> String {
[INFO] [stdout] 14 | |       return match self.y {
[INFO] [stdout] 15 | |          0 => (self.x - 1).to_string(),
[INFO] [stdout] 16 | |          1 => (self.x + 1).to_string(),
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |    }
[INFO] [stdout]    | |____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: implement trait `Display` for type `puzzle2::State` instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inherent_to_string
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | /       return match self.y {
[INFO] [stdout] 15 | |          0 => (self.x - 1).to_string(),
[INFO] [stdout] 16 | |          1 => (self.x + 1).to_string(),
[INFO] [stdout] 17 | |          2 => (self.x + 5).to_string(),
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |          _ => String::from(""),
[INFO] [stdout] 26 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 ~       match self.y {
[INFO] [stdout] 15 +          0 => (self.x - 1).to_string(),
[INFO] [stdout] 16 +          1 => (self.x + 1).to_string(),
[INFO] [stdout] 17 +          2 => (self.x + 5).to_string(),
[INFO] [stdout] 18 +          3 => match self.x {
[INFO] [stdout] 19 +             1 => String::from("A"),
[INFO] [stdout] 20 +             2 => String::from("B"),
[INFO] [stdout] 21 +             3 => String::from("C"),
[INFO] [stdout] 22 +             _ => String::from(""),
[INFO] [stdout] 23 +          },
[INFO] [stdout] 24 +          4 => String::from("D"),
[INFO] [stdout] 25 +          _ => String::from(""),
[INFO] [stdout] 26 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day02/puzzle2.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout] 31 | |       && self.x + self.y <= 6
[INFO] [stdout] 32 | |       && self.x - self.y >= -2
[INFO] [stdout] 33 | |       && self.x - self.y <= 2
[INFO] [stdout]    | |_____________________________^ help: try: `self.x + self.y >= 2 && self.x + self.y <= 6 && self.x - self.y >= -2 && self.x - self.y <= 2`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day02/puzzle2.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout] 31 | |       && self.x + self.y <= 6
[INFO] [stdout] 32 | |       && self.x - self.y >= -2
[INFO] [stdout]    | |______________________________^ help: try: `self.x + self.y >= 2 && self.x + self.y <= 6 && self.x - self.y >= -2`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day02/puzzle2.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout] 31 | |       && self.x + self.y <= 6
[INFO] [stdout]    | |_____________________________^ help: try: `self.x + self.y >= 2 && self.x + self.y <= 6`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day02/puzzle2.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout]    | |_____________________________^ help: try: `self.x + self.y >= 2`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 | /       return true
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout] 31 | |       && self.x + self.y <= 6
[INFO] [stdout] 32 | |       && self.x - self.y >= -2
[INFO] [stdout] 33 | |       && self.x - self.y <= 2
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 29 ~       true
[INFO] [stdout] 30 +       && self.x + self.y >= 2
[INFO] [stdout] 31 +       && self.x + self.y <= 6
[INFO] [stdout] 32 +       && self.x - self.y >= -2
[INFO] [stdout] 33 +       && self.x - self.y <= 2
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 |          return new;
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 37 -          return new;
[INFO] [stdout] 37 +          new
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 |          return *self;
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 39 -          return *self;
[INFO] [stdout] 39 +          *self
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> day03/util.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | /    return match maybe_x {
[INFO] [stdout] 6 | |       Ok(x) => Some(x),
[INFO] [stdout] 7 | |       Err(_) => None
[INFO] [stdout] 8 | |    }
[INFO] [stdout]   | |____^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]   = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 5 ~    match maybe_x {
[INFO] [stdout] 6 +       Ok(x) => Some(x),
[INFO] [stdout] 7 +       Err(_) => None
[INFO] [stdout] 8 +    }
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:43:7
[INFO] [stdout]    |
[INFO] [stdout] 43 | /       return self.maybe_update(match d {
[INFO] [stdout] 44 | |          Dir::L => State {
[INFO] [stdout] 45 | |             x: self.x - 1,
[INFO] [stdout] 46 | |             y: self.y,
[INFO] [stdout] ...  |
[INFO] [stdout] 59 | |          },
[INFO] [stdout] 60 | |       });
[INFO] [stdout]    | |________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 43 ~       self.maybe_update(match d {
[INFO] [stdout] 44 +          Dir::L => State {
[INFO] [stdout] 45 +             x: self.x - 1,
[INFO] [stdout] 46 +             y: self.y,
[INFO] [stdout] 47 +          },
[INFO] [stdout] 48 +          Dir::R => State {
[INFO] [stdout] 49 +             x: self.x + 1,
[INFO] [stdout] 50 +             y: self.y,
[INFO] [stdout] 51 +          },
[INFO] [stdout] 52 +          Dir::U => State {
[INFO] [stdout] 53 +             x: self.x,
[INFO] [stdout] 54 +             y: self.y - 1,
[INFO] [stdout] 55 +          },
[INFO] [stdout] 56 +          Dir::D => State {
[INFO] [stdout] 57 +             x: self.x,
[INFO] [stdout] 58 +             y: self.y + 1,
[INFO] [stdout] 59 +          },
[INFO] [stdout] 60 ~       })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `ok`
[INFO] [stdout]  --> day03/util.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |      return match maybe_x {
[INFO] [stdout]   |  ___________^
[INFO] [stdout] 6 | |       Ok(x) => Some(x),
[INFO] [stdout] 7 | |       Err(_) => None
[INFO] [stdout] 8 | |    }
[INFO] [stdout]   | |____^ help: replace with: `maybe_x.ok()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_err
[INFO] [stdout]   = note: `#[warn(clippy::manual_ok_err)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 |    return option_from_result::<u32, std::num::ParseIntError>(s.parse::<u32>());
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 12 -    return option_from_result::<u32, std::num::ParseIntError>(s.parse::<u32>());
[INFO] [stdout] 12 +    option_from_result::<u32, std::num::ParseIntError>(s.parse::<u32>())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 |       return state;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 67 -       return state;
[INFO] [stdout] 67 +       state
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 |    return i.filter(|x| x.is_some()).map(|x| x.unwrap()).collect();
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 16 -    return i.filter(|x| x.is_some()).map(|x| x.unwrap()).collect();
[INFO] [stdout] 16 +    i.filter(|x| x.is_some()).map(|x| x.unwrap()).collect()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `filter` for `Some` followed by `unwrap`
[INFO] [stdout]   --> day03/util.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |    return i.filter(|x| x.is_some()).map(|x| x.unwrap()).collect();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `flatten` instead: `flatten()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_filter_map
[INFO] [stdout]    = note: `#[warn(clippy::option_filter_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | /       return Some(Trpl {
[INFO] [stdout] 28 | |          a: to_u32(abc.get(0)?)?,
[INFO] [stdout] 29 | |          b: to_u32(abc.get(1)?)?,
[INFO] [stdout] 30 | |          c: to_u32(abc.get(2)?)?
[INFO] [stdout] 31 | |       });
[INFO] [stdout]    | |________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 27 ~       Some(Trpl {
[INFO] [stdout] 28 +          a: to_u32(abc.get(0)?)?,
[INFO] [stdout] 29 +          b: to_u32(abc.get(1)?)?,
[INFO] [stdout] 30 +          c: to_u32(abc.get(2)?)?
[INFO] [stdout] 31 ~       })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: accessing first element with `abc.get(0)`
[INFO] [stdout]   --> day03/util.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |          a: to_u32(abc.get(0)?)?,
[INFO] [stdout]    |                    ^^^^^^^^^^ help: try: `abc.first()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first
[INFO] [stdout]    = note: `#[warn(clippy::get_first)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day03/util.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 35 | |       && t.a + t.b > t.c
[INFO] [stdout] 36 | |       && t.b + t.c > t.a
[INFO] [stdout] 37 | |       && t.c + t.a > t.b
[INFO] [stdout]    | |________________________^ help: try: `t.a + t.b > t.c && t.b + t.c > t.a && t.c + t.a > t.b`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day03/util.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 35 | |       && t.a + t.b > t.c
[INFO] [stdout] 36 | |       && t.b + t.c > t.a
[INFO] [stdout]    | |________________________^ help: try: `t.a + t.b > t.c && t.b + t.c > t.a`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day03/util.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 35 | |       && t.a + t.b > t.c
[INFO] [stdout]    | |________________________^ help: try: `t.a + t.b > t.c`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | /       return true
[INFO] [stdout] 35 | |       && t.a + t.b > t.c
[INFO] [stdout] 36 | |       && t.b + t.c > t.a
[INFO] [stdout] 37 | |       && t.c + t.a > t.b
[INFO] [stdout]    | |________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 34 ~       true
[INFO] [stdout] 35 +       && t.a + t.b > t.c
[INFO] [stdout] 36 +       && t.b + t.c > t.a
[INFO] [stdout] 37 +       && t.c + t.a > t.b
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/util.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 |    return input;
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 44 -    return input;
[INFO] [stdout] 44 +    input
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/puzzle1.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 |    return collect_options(input.trim().split("\n").map(Trpl::from_str));
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -    return collect_options(input.trim().split("\n").map(Trpl::from_str));
[INFO] [stdout] 10 +    collect_options(input.trim().split("\n").map(Trpl::from_str))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/puzzle2.rs:7:7
[INFO] [stdout]    |
[INFO] [stdout]  7 | /       return Trpl {
[INFO] [stdout]  8 | |          a: 0,
[INFO] [stdout]  9 | |          b: 0,
[INFO] [stdout] 10 | |          c: 0,
[INFO] [stdout] 11 | |       };
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout]  7 ~       Trpl {
[INFO] [stdout]  8 +          a: 0,
[INFO] [stdout]  9 +          b: 0,
[INFO] [stdout] 10 +          c: 0,
[INFO] [stdout] 11 ~       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day03/puzzle2.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 |    return v;
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 59 -    return v;
[INFO] [stdout] 59 +    v
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> day03/puzzle2.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 | /       match maybe_t {
[INFO] [stdout] 30 | |          Some(t) => match tp {
[INFO] [stdout] 31 | |             TrplPos::A => {
[INFO] [stdout] 32 | |                ta.a = t.a;
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |          None => {}
[INFO] [stdout] 57 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]    = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 29 ~       if let Some(t) = maybe_t { match tp {
[INFO] [stdout] 30 +          TrplPos::A => {
[INFO] [stdout] 31 +             ta.a = t.a;
[INFO] [stdout] 32 +             tb.a = t.b;
[INFO] [stdout] 33 +             tc.a = t.c;
[INFO] [stdout] 34 +             tp = TrplPos::B;
[INFO] [stdout] 35 +          },
[INFO] [stdout] 36 +          TrplPos::B => {
[INFO] [stdout] 37 +             ta.b = t.a;
[INFO] [stdout] 38 +             tb.b = t.b;
[INFO] [stdout] 39 +             tc.b = t.c;
[INFO] [stdout] 40 +             tp = TrplPos::C;
[INFO] [stdout] 41 +          },
[INFO] [stdout] 42 +          TrplPos::C => {
[INFO] [stdout] 43 +             ta.c = t.a;
[INFO] [stdout] 44 +             tb.c = t.b;
[INFO] [stdout] 45 +             tc.c = t.c;
[INFO] [stdout] 46 +             v.push(ta);
[INFO] [stdout] 47 +             v.push(tb);
[INFO] [stdout] 48 +             v.push(tc);
[INFO] [stdout] 49 +             ta = Trpl::new();
[INFO] [stdout] 50 +             tb = Trpl::new();
[INFO] [stdout] 51 +             tc = Trpl::new();
[INFO] [stdout] 52 +             tp = TrplPos::A;
[INFO] [stdout] 53 +          },
[INFO] [stdout] 54 +       } }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> day01/util.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 |    return String::from(input.trim());
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]   = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 9 -    return String::from(input.trim());
[INFO] [stdout] 9 +    String::from(input.trim())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/util.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | /    return match maybe_x {
[INFO] [stdout] 14 | |       Ok(x) => Some(x),
[INFO] [stdout] 15 | |       Err(_) => None
[INFO] [stdout] 16 | |    }
[INFO] [stdout]    | |____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 13 ~    match maybe_x {
[INFO] [stdout] 14 +       Ok(x) => Some(x),
[INFO] [stdout] 15 +       Err(_) => None
[INFO] [stdout] 16 +    }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `ok`
[INFO] [stdout]   --> day01/util.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 |      return match maybe_x {
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 14 | |       Ok(x) => Some(x),
[INFO] [stdout] 15 | |       Err(_) => None
[INFO] [stdout] 16 | |    }
[INFO] [stdout]    | |____^ help: replace with: `maybe_x.ok()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_err
[INFO] [stdout]    = note: `#[warn(clippy::manual_ok_err)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:9:7
[INFO] [stdout]    |
[INFO] [stdout]  9 | /       return match c {
[INFO] [stdout] 10 | |          Some('R') => Some(Turn::R),
[INFO] [stdout] 11 | |          Some('L') => Some(Turn::L),
[INFO] [stdout] 12 | |          _ => None,
[INFO] [stdout] 13 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout]  9 ~       match c {
[INFO] [stdout] 10 +          Some('R') => Some(Turn::R),
[INFO] [stdout] 11 +          Some('L') => Some(Turn::L),
[INFO] [stdout] 12 +          _ => None,
[INFO] [stdout] 13 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 |    return res.collect();
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 32 -    return res.collect();
[INFO] [stdout] 32 +    res.collect()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `filter` for `Some` followed by `unwrap`
[INFO] [stdout]   --> day01/puzzle1.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |         .filter(|x| x.is_some())
[INFO] [stdout]    |  ________^
[INFO] [stdout] 31 | |       .map(|x| x.unwrap());
[INFO] [stdout]    | |__________________________^ help: consider using `flatten` instead: `flatten()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_filter_map
[INFO] [stdout]    = note: `#[warn(clippy::option_filter_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]   --> day01/puzzle1.rs:27:27
[INFO] [stdout]    |
[INFO] [stdout] 27 |          turn: Turn::from(a.chars().nth(0))?,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `a.chars().next()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout]    = note: `#[warn(clippy::iter_nth_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 |    return parsed_input;
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 38 -    return parsed_input;
[INFO] [stdout] 38 +    parsed_input
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 | /       return match t {
[INFO] [stdout] 45 | |          Turn::L => match d {
[INFO] [stdout] 46 | |             Dir::D0 => Dir::D3,
[INFO] [stdout] 47 | |             Dir::D1 => Dir::D0,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |          },
[INFO] [stdout] 57 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 44 ~       match t {
[INFO] [stdout] 45 +          Turn::L => match d {
[INFO] [stdout] 46 +             Dir::D0 => Dir::D3,
[INFO] [stdout] 47 +             Dir::D1 => Dir::D0,
[INFO] [stdout] 48 +             Dir::D2 => Dir::D1,
[INFO] [stdout] 49 +             Dir::D3 => Dir::D2,
[INFO] [stdout] 50 +          },
[INFO] [stdout] 51 +          Turn::R => match d {
[INFO] [stdout] 52 +             Dir::D0 => Dir::D1,
[INFO] [stdout] 53 +             Dir::D1 => Dir::D2,
[INFO] [stdout] 54 +             Dir::D2 => Dir::D3,
[INFO] [stdout] 55 +             Dir::D3 => Dir::D0,
[INFO] [stdout] 56 +          },
[INFO] [stdout] 57 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:75:7
[INFO] [stdout]    |
[INFO] [stdout] 75 | /       return match dir {
[INFO] [stdout] 76 | |          Dir::D0 => Diff {
[INFO] [stdout] 77 | |             x: 0,
[INFO] [stdout] 78 | |             y: -dist,
[INFO] [stdout] ...  |
[INFO] [stdout] 91 | |          },
[INFO] [stdout] 92 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 75 ~       match dir {
[INFO] [stdout] 76 +          Dir::D0 => Diff {
[INFO] [stdout] 77 +             x: 0,
[INFO] [stdout] 78 +             y: -dist,
[INFO] [stdout] 79 +          },
[INFO] [stdout] 80 +          Dir::D1 => Diff {
[INFO] [stdout] 81 +             x: dist,
[INFO] [stdout] 82 +             y: 0,
[INFO] [stdout] 83 +          },
[INFO] [stdout] 84 +          Dir::D2 => Diff {
[INFO] [stdout] 85 +             x: 0,
[INFO] [stdout] 86 +             y: dist,
[INFO] [stdout] 87 +          },
[INFO] [stdout] 88 +          Dir::D3 => Diff {
[INFO] [stdout] 89 +             x: -dist,
[INFO] [stdout] 90 +             y: 0,
[INFO] [stdout] 91 +          },
[INFO] [stdout] 92 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle1.rs:110:7
[INFO] [stdout]     |
[INFO] [stdout] 110 |       return new_s;
[INFO] [stdout]     |       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 110 -       return new_s;
[INFO] [stdout] 110 +       new_s
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle1.rs:121:7
[INFO] [stdout]     |
[INFO] [stdout] 121 |       return state;
[INFO] [stdout]     |       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 121 -       return state;
[INFO] [stdout] 121 +       state
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle1.rs:125:7
[INFO] [stdout]     |
[INFO] [stdout] 125 |       return dist.try_into().unwrap();
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 125 -       return dist.try_into().unwrap();
[INFO] [stdout] 125 +       dist.try_into().unwrap()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle2.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | /       return match d {
[INFO] [stdout] 15 | |          Dir::D0 => Dir::D3,
[INFO] [stdout] 16 | |          Dir::D1 => Dir::D0,
[INFO] [stdout] 17 | |          Dir::D2 => Dir::D1,
[INFO] [stdout] 18 | |          Dir::D3 => Dir::D2,
[INFO] [stdout] 19 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 ~       match d {
[INFO] [stdout] 15 +          Dir::D0 => Dir::D3,
[INFO] [stdout] 16 +          Dir::D1 => Dir::D0,
[INFO] [stdout] 17 +          Dir::D2 => Dir::D1,
[INFO] [stdout] 18 +          Dir::D3 => Dir::D2,
[INFO] [stdout] 19 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle2.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | /       return match d {
[INFO] [stdout] 23 | |          Dir::D0 => Dir::D1,
[INFO] [stdout] 24 | |          Dir::D1 => Dir::D2,
[INFO] [stdout] 25 | |          Dir::D2 => Dir::D3,
[INFO] [stdout] 26 | |          Dir::D3 => Dir::D0,
[INFO] [stdout] 27 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 22 ~       match d {
[INFO] [stdout] 23 +          Dir::D0 => Dir::D1,
[INFO] [stdout] 24 +          Dir::D1 => Dir::D2,
[INFO] [stdout] 25 +          Dir::D2 => Dir::D3,
[INFO] [stdout] 26 +          Dir::D3 => Dir::D0,
[INFO] [stdout] 27 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day01/puzzle2.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 | /          true
[INFO] [stdout] 56 | |       && self.x == other.x
[INFO] [stdout] 57 | |       && self.y == other.y
[INFO] [stdout]    | |__________________________^ help: try: `self.x == other.x && self.y == other.y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day01/puzzle2.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 | /          true
[INFO] [stdout] 56 | |       && self.x == other.x
[INFO] [stdout]    | |__________________________^ help: try: `self.x == other.x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle2.rs:64:7
[INFO] [stdout]    |
[INFO] [stdout] 64 | /       return match s.dir {
[INFO] [stdout] 65 | |          Dir::D0 => State {
[INFO] [stdout] 66 | |             x: s.x - 0,
[INFO] [stdout] 67 | |             y: s.y - 1,
[INFO] [stdout] ...  |
[INFO] [stdout] 88 | |          },
[INFO] [stdout] 89 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 64 ~       match s.dir {
[INFO] [stdout] 65 +          Dir::D0 => State {
[INFO] [stdout] 66 +             x: s.x - 0,
[INFO] [stdout] 67 +             y: s.y - 1,
[INFO] [stdout] 68 +             dir: s.dir,
[INFO] [stdout] 69 +             index: s.index + 1,
[INFO] [stdout] 70 +          },
[INFO] [stdout] 71 +          Dir::D1 => State {
[INFO] [stdout] 72 +             x: s.x + 1,
[INFO] [stdout] 73 +             y: s.y + 0,
[INFO] [stdout] 74 +             dir: s.dir,
[INFO] [stdout] 75 +             index: s.index + 1,
[INFO] [stdout] 76 +          },
[INFO] [stdout] 77 +          Dir::D2 => State {
[INFO] [stdout] 78 +             x: s.x + 0,
[INFO] [stdout] 79 +             y: s.y + 1,
[INFO] [stdout] 80 +             dir: s.dir,
[INFO] [stdout] 81 +             index: s.index + 1,
[INFO] [stdout] 82 +          },
[INFO] [stdout] 83 +          Dir::D3 => State {
[INFO] [stdout] 84 +             x: s.x - 1,
[INFO] [stdout] 85 +             y: s.y - 0,
[INFO] [stdout] 86 +             dir: s.dir,
[INFO] [stdout] 87 +             index: s.index + 1,
[INFO] [stdout] 88 +          },
[INFO] [stdout] 89 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> day01/puzzle2.rs:66:16
[INFO] [stdout]    |
[INFO] [stdout] 66 |             x: s.x - 0,
[INFO] [stdout]    |                ^^^^^^^ help: consider reducing it to: `s.x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout]    = note: `#[warn(clippy::identity_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> day01/puzzle2.rs:73:16
[INFO] [stdout]    |
[INFO] [stdout] 73 |             y: s.y + 0,
[INFO] [stdout]    |                ^^^^^^^ help: consider reducing it to: `s.y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> day01/puzzle2.rs:78:16
[INFO] [stdout]    |
[INFO] [stdout] 78 |             x: s.x + 0,
[INFO] [stdout]    |                ^^^^^^^ help: consider reducing it to: `s.x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> day01/puzzle2.rs:85:16
[INFO] [stdout]    |
[INFO] [stdout] 85 |             y: s.y - 0,
[INFO] [stdout]    |                ^^^^^^^ help: consider reducing it to: `s.y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle2.rs:92:7
[INFO] [stdout]     |
[INFO] [stdout]  92 | /       return match i {
[INFO] [stdout]  93 | |          Instruction::L => State {
[INFO] [stdout]  94 | |             x: s.x,
[INFO] [stdout]  95 | |             y: s.y,
[INFO] [stdout] ...   |
[INFO] [stdout] 105 | |          Instruction::F => State::consume_f(s),
[INFO] [stdout] 106 | |       }
[INFO] [stdout]     | |_______^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout]  92 ~       match i {
[INFO] [stdout]  93 +          Instruction::L => State {
[INFO] [stdout]  94 +             x: s.x,
[INFO] [stdout]  95 +             y: s.y,
[INFO] [stdout]  96 +             dir: Dir::consume_l(s.dir),
[INFO] [stdout]  97 +             index: s.index + 1,
[INFO] [stdout]  98 +          },
[INFO] [stdout]  99 +          Instruction::R => State {
[INFO] [stdout] 100 +             x: s.x,
[INFO] [stdout] 101 +             y: s.y,
[INFO] [stdout] 102 +             dir: Dir::consume_r(s.dir),
[INFO] [stdout] 103 +             index: s.index + 1,
[INFO] [stdout] 104 +          },
[INFO] [stdout] 105 +          Instruction::F => State::consume_f(s),
[INFO] [stdout] 106 +       }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle2.rs:110:7
[INFO] [stdout]     |
[INFO] [stdout] 110 |       return dist.try_into().unwrap();
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 110 -       return dist.try_into().unwrap();
[INFO] [stdout] 110 +       dist.try_into().unwrap()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle2.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 |    return v;
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 136 -    return v;
[INFO] [stdout] 136 +    v
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]    --> day01/puzzle2.rs:128:20
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let num_fs = match maybe_num_fs {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 129 | |          Some(num_fs) => num_fs,
[INFO] [stdout] 130 | |          None => 0,
[INFO] [stdout] 131 | |       };
[INFO] [stdout]     | |_______^ help: replace it with: `maybe_num_fs.unwrap_or_default()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout]     = note: `#[warn(clippy::manual_unwrap_or_default)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> day04/util.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 |    return s.parse::<u32>().ok();
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]   = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 7 -    return s.parse::<u32>().ok();
[INFO] [stdout] 7 +    s.parse::<u32>().ok()
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day04/util.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 |    return h;
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 27 -    return h;
[INFO] [stdout] 27 +    h
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day04/util.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 |    return input;
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 33 -    return input;
[INFO] [stdout] 33 +    input
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day04/puzzle1.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | /       return Some(Input {
[INFO] [stdout] 16 | |          name: String::from(&caps["name"]),
[INFO] [stdout] 17 | |          code: util::to_u32(&caps["code"])?,
[INFO] [stdout] 18 | |          order: String::from(&caps["order"]),
[INFO] [stdout] 19 | |       });
[INFO] [stdout]    | |________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 15 ~       Some(Input {
[INFO] [stdout] 16 +          name: String::from(&caps["name"]),
[INFO] [stdout] 17 +          code: util::to_u32(&caps["code"])?,
[INFO] [stdout] 18 +          order: String::from(&caps["order"]),
[INFO] [stdout] 19 ~       })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> day04/puzzle1.rs:37:16
[INFO] [stdout]    |
[INFO] [stdout] 37 |          while val_set.len() > 0 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!val_set.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day04/puzzle1.rs:52:7
[INFO] [stdout]    |
[INFO] [stdout] 52 | /       return match maybe_input {
[INFO] [stdout] 53 | |          Some(input) => Input::is_real_room(&input),
[INFO] [stdout] 54 | |          None => false
[INFO] [stdout] 55 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 52 ~       match maybe_input {
[INFO] [stdout] 53 +          Some(input) => Input::is_real_room(&input),
[INFO] [stdout] 54 +          None => false
[INFO] [stdout] 55 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day04/puzzle1.rs:53:45
[INFO] [stdout]    |
[INFO] [stdout] 53 |          Some(input) => Input::is_real_room(&input),
[INFO] [stdout]    |                                             ^^^^^^ help: change this to: `input`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `u32` is unnecessary
[INFO] [stdout]   --> day04/puzzle1.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |       .fold(0 as u32, |x, y| x + y.unwrap().code);
[INFO] [stdout]    |             ^^^^^^^^ help: try: `0_u32`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> day01/util.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 |    return String::from(input.trim());
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]   = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 9 -    return String::from(input.trim());
[INFO] [stdout] 9 +    String::from(input.trim())
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/util.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | /    return match maybe_x {
[INFO] [stdout] 14 | |       Ok(x) => Some(x),
[INFO] [stdout] 15 | |       Err(_) => None
[INFO] [stdout] 16 | |    }
[INFO] [stdout]    | |____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 13 ~    match maybe_x {
[INFO] [stdout] 14 +       Ok(x) => Some(x),
[INFO] [stdout] 15 +       Err(_) => None
[INFO] [stdout] 16 +    }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `ok`
[INFO] [stdout]   --> day01/util.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 |      return match maybe_x {
[INFO] [stdout]    |  ___________^
[INFO] [stdout] 14 | |       Ok(x) => Some(x),
[INFO] [stdout] 15 | |       Err(_) => None
[INFO] [stdout] 16 | |    }
[INFO] [stdout]    | |____^ help: replace with: `maybe_x.ok()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_err
[INFO] [stdout]    = note: `#[warn(clippy::manual_ok_err)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:9:7
[INFO] [stdout]    |
[INFO] [stdout]  9 | /       return match c {
[INFO] [stdout] 10 | |          Some('R') => Some(Turn::R),
[INFO] [stdout] 11 | |          Some('L') => Some(Turn::L),
[INFO] [stdout] 12 | |          _ => None,
[INFO] [stdout] 13 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout]  9 ~       match c {
[INFO] [stdout] 10 +          Some('R') => Some(Turn::R),
[INFO] [stdout] 11 +          Some('L') => Some(Turn::L),
[INFO] [stdout] 12 +          _ => None,
[INFO] [stdout] 13 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 |    return res.collect();
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 32 -    return res.collect();
[INFO] [stdout] 32 +    res.collect()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `filter` for `Some` followed by `unwrap`
[INFO] [stdout]   --> day01/puzzle1.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |         .filter(|x| x.is_some())
[INFO] [stdout]    |  ________^
[INFO] [stdout] 31 | |       .map(|x| x.unwrap());
[INFO] [stdout]    | |__________________________^ help: consider using `flatten` instead: `flatten()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_filter_map
[INFO] [stdout]    = note: `#[warn(clippy::option_filter_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> day04/util.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 |    return s.parse::<u32>().ok();
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]   = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 7 -    return s.parse::<u32>().ok();
[INFO] [stdout] 7 +    s.parse::<u32>().ok()
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day04/util.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 |    return h;
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 27 -    return h;
[INFO] [stdout] 27 +    h
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day04/util.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 |    return input;
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 33 -    return input;
[INFO] [stdout] 33 +    input
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]   --> day01/puzzle1.rs:27:27
[INFO] [stdout]    |
[INFO] [stdout] 27 |          turn: Turn::from(a.chars().nth(0))?,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `a.chars().next()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout]    = note: `#[warn(clippy::iter_nth_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day04/puzzle1.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | /       return Some(Input {
[INFO] [stdout] 16 | |          name: String::from(&caps["name"]),
[INFO] [stdout] 17 | |          code: util::to_u32(&caps["code"])?,
[INFO] [stdout] 18 | |          order: String::from(&caps["order"]),
[INFO] [stdout] 19 | |       });
[INFO] [stdout]    | |________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 15 ~       Some(Input {
[INFO] [stdout] 16 +          name: String::from(&caps["name"]),
[INFO] [stdout] 17 +          code: util::to_u32(&caps["code"])?,
[INFO] [stdout] 18 +          order: String::from(&caps["order"]),
[INFO] [stdout] 19 ~       })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 |    return parsed_input;
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 38 -    return parsed_input;
[INFO] [stdout] 38 +    parsed_input
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 | /       return match t {
[INFO] [stdout] 45 | |          Turn::L => match d {
[INFO] [stdout] 46 | |             Dir::D0 => Dir::D3,
[INFO] [stdout] 47 | |             Dir::D1 => Dir::D0,
[INFO] [stdout] ...  |
[INFO] [stdout] 56 | |          },
[INFO] [stdout] 57 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 44 ~       match t {
[INFO] [stdout] 45 +          Turn::L => match d {
[INFO] [stdout] 46 +             Dir::D0 => Dir::D3,
[INFO] [stdout] 47 +             Dir::D1 => Dir::D0,
[INFO] [stdout] 48 +             Dir::D2 => Dir::D1,
[INFO] [stdout] 49 +             Dir::D3 => Dir::D2,
[INFO] [stdout] 50 +          },
[INFO] [stdout] 51 +          Turn::R => match d {
[INFO] [stdout] 52 +             Dir::D0 => Dir::D1,
[INFO] [stdout] 53 +             Dir::D1 => Dir::D2,
[INFO] [stdout] 54 +             Dir::D2 => Dir::D3,
[INFO] [stdout] 55 +             Dir::D3 => Dir::D0,
[INFO] [stdout] 56 +          },
[INFO] [stdout] 57 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle1.rs:75:7
[INFO] [stdout]    |
[INFO] [stdout] 75 | /       return match dir {
[INFO] [stdout] 76 | |          Dir::D0 => Diff {
[INFO] [stdout] 77 | |             x: 0,
[INFO] [stdout] 78 | |             y: -dist,
[INFO] [stdout] ...  |
[INFO] [stdout] 91 | |          },
[INFO] [stdout] 92 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 75 ~       match dir {
[INFO] [stdout] 76 +          Dir::D0 => Diff {
[INFO] [stdout] 77 +             x: 0,
[INFO] [stdout] 78 +             y: -dist,
[INFO] [stdout] 79 +          },
[INFO] [stdout] 80 +          Dir::D1 => Diff {
[INFO] [stdout] 81 +             x: dist,
[INFO] [stdout] 82 +             y: 0,
[INFO] [stdout] 83 +          },
[INFO] [stdout] 84 +          Dir::D2 => Diff {
[INFO] [stdout] 85 +             x: 0,
[INFO] [stdout] 86 +             y: dist,
[INFO] [stdout] 87 +          },
[INFO] [stdout] 88 +          Dir::D3 => Diff {
[INFO] [stdout] 89 +             x: -dist,
[INFO] [stdout] 90 +             y: 0,
[INFO] [stdout] 91 +          },
[INFO] [stdout] 92 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle1.rs:110:7
[INFO] [stdout]     |
[INFO] [stdout] 110 |       return new_s;
[INFO] [stdout]     |       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 110 -       return new_s;
[INFO] [stdout] 110 +       new_s
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/util.rs:9:7
[INFO] [stdout]    |
[INFO] [stdout]  9 | /       return match c {
[INFO] [stdout] 10 | |          'L' => Some(Dir::L),
[INFO] [stdout] 11 | |          'R' => Some(Dir::R),
[INFO] [stdout] 12 | |          'U' => Some(Dir::U),
[INFO] [stdout] 13 | |          'D' => Some(Dir::D),
[INFO] [stdout] 14 | |          _ => None,
[INFO] [stdout] 15 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout]  9 ~       match c {
[INFO] [stdout] 10 +          'L' => Some(Dir::L),
[INFO] [stdout] 11 +          'R' => Some(Dir::R),
[INFO] [stdout] 12 +          'U' => Some(Dir::U),
[INFO] [stdout] 13 +          'D' => Some(Dir::D),
[INFO] [stdout] 14 +          _ => None,
[INFO] [stdout] 15 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/util.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 |       return v;
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 25 -       return v;
[INFO] [stdout] 25 +       v
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> day02/util.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 | /          match Dir::from_char(c) {
[INFO] [stdout] 21 | |             Some(dir) => v.push(dir),
[INFO] [stdout] 22 | |             None => {}
[INFO] [stdout] 23 | |          }
[INFO] [stdout]    | |__________^ help: try: `if let Some(dir) = Dir::from_char(c) { v.push(dir) }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]    = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/util.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 |    return input.trim().split("\n").map(Dir::from_str).collect();
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 32 -    return input.trim().split("\n").map(Dir::from_str).collect();
[INFO] [stdout] 32 +    input.trim().split("\n").map(Dir::from_str).collect()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods with the following characteristics: (`to_*` and `self` type is `Copy`) usually take `self` by value
[INFO] [stdout]   --> day02/puzzle1.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 |    fn to_int(&self) -> i8 {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider choosing a less ambiguous name
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stdout]    = note: `#[warn(clippy::wrong_self_convention)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |       return 1 + self.x + 3*self.y;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 11 -       return 1 + self.x + 3*self.y;
[INFO] [stdout] 11 +       1 + self.x + 3*self.y
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods with the following characteristics: (`to_*` and `self` type is `Copy`) usually take `self` by value
[INFO] [stdout]   --> day02/puzzle1.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |    fn to_string(&self) -> String {
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider choosing a less ambiguous name
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: implementation of inherent method `to_string(&self) -> String` for type `puzzle1::State`
[INFO] [stdout]   --> day02/puzzle1.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | /    fn to_string(&self) -> String {
[INFO] [stdout] 14 | |       return self.to_int().to_string();
[INFO] [stdout] 15 | |    }
[INFO] [stdout]    | |____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: implement trait `Display` for type `puzzle1::State` instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inherent_to_string
[INFO] [stdout]    = note: `#[warn(clippy::inherent_to_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 |       return self.to_int().to_string();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 -       return self.to_int().to_string();
[INFO] [stdout] 14 +       self.to_int().to_string()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |          return 0
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 18 -          return 0
[INFO] [stdout] 18 +          0
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 |          return 2
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 20 -          return 2
[INFO] [stdout] 20 +          2
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 |          return v
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 22 -          return v
[INFO] [stdout] 22 +          v
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | /       return match d {
[INFO] [stdout] 27 | |          Dir::L => State {
[INFO] [stdout] 28 | |             x: State::clamp(self.x - 1),
[INFO] [stdout] 29 | |             y: self.y,
[INFO] [stdout] ...  |
[INFO] [stdout] 42 | |          },
[INFO] [stdout] 43 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 26 ~       match d {
[INFO] [stdout] 27 +          Dir::L => State {
[INFO] [stdout] 28 +             x: State::clamp(self.x - 1),
[INFO] [stdout] 29 +             y: self.y,
[INFO] [stdout] 30 +          },
[INFO] [stdout] 31 +          Dir::R => State {
[INFO] [stdout] 32 +             x: State::clamp(self.x + 1),
[INFO] [stdout] 33 +             y: self.y,
[INFO] [stdout] 34 +          },
[INFO] [stdout] 35 +          Dir::U => State {
[INFO] [stdout] 36 +             x: self.x,
[INFO] [stdout] 37 +             y: State::clamp(self.y - 1),
[INFO] [stdout] 38 +          },
[INFO] [stdout] 39 +          Dir::D => State {
[INFO] [stdout] 40 +             x: self.x,
[INFO] [stdout] 41 +             y: State::clamp(self.y + 1),
[INFO] [stdout] 42 +          },
[INFO] [stdout] 43 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle1.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 |       return state;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 50 -       return state;
[INFO] [stdout] 50 +       state
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods with the following characteristics: (`to_*` and `self` type is `Copy`) usually take `self` by value
[INFO] [stdout]   --> day02/puzzle2.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |    fn to_string(&self) -> String {
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider choosing a less ambiguous name
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: implementation of inherent method `to_string(&self) -> String` for type `puzzle2::State`
[INFO] [stdout]   --> day02/puzzle2.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | /    fn to_string(&self) -> String {
[INFO] [stdout] 14 | |       return match self.y {
[INFO] [stdout] 15 | |          0 => (self.x - 1).to_string(),
[INFO] [stdout] 16 | |          1 => (self.x + 1).to_string(),
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |    }
[INFO] [stdout]    | |____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: implement trait `Display` for type `puzzle2::State` instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#inherent_to_string
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | /       return match self.y {
[INFO] [stdout] 15 | |          0 => (self.x - 1).to_string(),
[INFO] [stdout] 16 | |          1 => (self.x + 1).to_string(),
[INFO] [stdout] 17 | |          2 => (self.x + 5).to_string(),
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |          _ => String::from(""),
[INFO] [stdout] 26 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 ~       match self.y {
[INFO] [stdout] 15 +          0 => (self.x - 1).to_string(),
[INFO] [stdout] 16 +          1 => (self.x + 1).to_string(),
[INFO] [stdout] 17 +          2 => (self.x + 5).to_string(),
[INFO] [stdout] 18 +          3 => match self.x {
[INFO] [stdout] 19 +             1 => String::from("A"),
[INFO] [stdout] 20 +             2 => String::from("B"),
[INFO] [stdout] 21 +             3 => String::from("C"),
[INFO] [stdout] 22 +             _ => String::from(""),
[INFO] [stdout] 23 +          },
[INFO] [stdout] 24 +          4 => String::from("D"),
[INFO] [stdout] 25 +          _ => String::from(""),
[INFO] [stdout] 26 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day02/puzzle2.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout] 31 | |       && self.x + self.y <= 6
[INFO] [stdout] 32 | |       && self.x - self.y >= -2
[INFO] [stdout] 33 | |       && self.x - self.y <= 2
[INFO] [stdout]    | |_____________________________^ help: try: `self.x + self.y >= 2 && self.x + self.y <= 6 && self.x - self.y >= -2 && self.x - self.y <= 2`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day02/puzzle2.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout] 31 | |       && self.x + self.y <= 6
[INFO] [stdout] 32 | |       && self.x - self.y >= -2
[INFO] [stdout]    | |______________________________^ help: try: `self.x + self.y >= 2 && self.x + self.y <= 6 && self.x - self.y >= -2`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle1.rs:121:7
[INFO] [stdout]     |
[INFO] [stdout] 121 |       return state;
[INFO] [stdout]     |       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 121 -       return state;
[INFO] [stdout] 121 +       state
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day02/puzzle2.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout] 31 | |       && self.x + self.y <= 6
[INFO] [stdout]    | |_____________________________^ help: try: `self.x + self.y >= 2 && self.x + self.y <= 6`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day02/puzzle2.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         return true
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout]    | |_____________________________^ help: try: `self.x + self.y >= 2`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 | /       return true
[INFO] [stdout] 30 | |       && self.x + self.y >= 2
[INFO] [stdout] 31 | |       && self.x + self.y <= 6
[INFO] [stdout] 32 | |       && self.x - self.y >= -2
[INFO] [stdout] 33 | |       && self.x - self.y <= 2
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 29 ~       true
[INFO] [stdout] 30 +       && self.x + self.y >= 2
[INFO] [stdout] 31 +       && self.x + self.y <= 6
[INFO] [stdout] 32 +       && self.x - self.y >= -2
[INFO] [stdout] 33 +       && self.x - self.y <= 2
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 |          return new;
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 37 -          return new;
[INFO] [stdout] 37 +          new
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 |          return *self;
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 39 -          return *self;
[INFO] [stdout] 39 +          *self
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> day04/puzzle1.rs:37:16
[INFO] [stdout]    |
[INFO] [stdout] 37 |          while val_set.len() > 0 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!val_set.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:43:7
[INFO] [stdout]    |
[INFO] [stdout] 43 | /       return self.maybe_update(match d {
[INFO] [stdout] 44 | |          Dir::L => State {
[INFO] [stdout] 45 | |             x: self.x - 1,
[INFO] [stdout] 46 | |             y: self.y,
[INFO] [stdout] ...  |
[INFO] [stdout] 59 | |          },
[INFO] [stdout] 60 | |       });
[INFO] [stdout]    | |________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 43 ~       self.maybe_update(match d {
[INFO] [stdout] 44 +          Dir::L => State {
[INFO] [stdout] 45 +             x: self.x - 1,
[INFO] [stdout] 46 +             y: self.y,
[INFO] [stdout] 47 +          },
[INFO] [stdout] 48 +          Dir::R => State {
[INFO] [stdout] 49 +             x: self.x + 1,
[INFO] [stdout] 50 +             y: self.y,
[INFO] [stdout] 51 +          },
[INFO] [stdout] 52 +          Dir::U => State {
[INFO] [stdout] 53 +             x: self.x,
[INFO] [stdout] 54 +             y: self.y - 1,
[INFO] [stdout] 55 +          },
[INFO] [stdout] 56 +          Dir::D => State {
[INFO] [stdout] 57 +             x: self.x,
[INFO] [stdout] 58 +             y: self.y + 1,
[INFO] [stdout] 59 +          },
[INFO] [stdout] 60 ~       })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle1.rs:125:7
[INFO] [stdout]     |
[INFO] [stdout] 125 |       return dist.try_into().unwrap();
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 125 -       return dist.try_into().unwrap();
[INFO] [stdout] 125 +       dist.try_into().unwrap()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day04/puzzle1.rs:52:7
[INFO] [stdout]    |
[INFO] [stdout] 52 | /       return match maybe_input {
[INFO] [stdout] 53 | |          Some(input) => Input::is_real_room(&input),
[INFO] [stdout] 54 | |          None => false
[INFO] [stdout] 55 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 52 ~       match maybe_input {
[INFO] [stdout] 53 +          Some(input) => Input::is_real_room(&input),
[INFO] [stdout] 54 +          None => false
[INFO] [stdout] 55 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day04/puzzle1.rs:53:45
[INFO] [stdout]    |
[INFO] [stdout] 53 |          Some(input) => Input::is_real_room(&input),
[INFO] [stdout]    |                                             ^^^^^^ help: change this to: `input`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day02/puzzle2.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 |       return state;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 67 -       return state;
[INFO] [stdout] 67 +       state
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `u32` is unnecessary
[INFO] [stdout]   --> day04/puzzle1.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |       .fold(0 as u32, |x, y| x + y.unwrap().code);
[INFO] [stdout]    |             ^^^^^^^^ help: try: `0_u32`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle2.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | /       return match d {
[INFO] [stdout] 15 | |          Dir::D0 => Dir::D3,
[INFO] [stdout] 16 | |          Dir::D1 => Dir::D0,
[INFO] [stdout] 17 | |          Dir::D2 => Dir::D1,
[INFO] [stdout] 18 | |          Dir::D3 => Dir::D2,
[INFO] [stdout] 19 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 ~       match d {
[INFO] [stdout] 15 +          Dir::D0 => Dir::D3,
[INFO] [stdout] 16 +          Dir::D1 => Dir::D0,
[INFO] [stdout] 17 +          Dir::D2 => Dir::D1,
[INFO] [stdout] 18 +          Dir::D3 => Dir::D2,
[INFO] [stdout] 19 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle2.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | /       return match d {
[INFO] [stdout] 23 | |          Dir::D0 => Dir::D1,
[INFO] [stdout] 24 | |          Dir::D1 => Dir::D2,
[INFO] [stdout] 25 | |          Dir::D2 => Dir::D3,
[INFO] [stdout] 26 | |          Dir::D3 => Dir::D0,
[INFO] [stdout] 27 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 22 ~       match d {
[INFO] [stdout] 23 +          Dir::D0 => Dir::D1,
[INFO] [stdout] 24 +          Dir::D1 => Dir::D2,
[INFO] [stdout] 25 +          Dir::D2 => Dir::D3,
[INFO] [stdout] 26 +          Dir::D3 => Dir::D0,
[INFO] [stdout] 27 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day01/puzzle2.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 | /          true
[INFO] [stdout] 56 | |       && self.x == other.x
[INFO] [stdout] 57 | |       && self.y == other.y
[INFO] [stdout]    | |__________________________^ help: try: `self.x == other.x && self.y == other.y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day01/puzzle2.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 | /          true
[INFO] [stdout] 56 | |       && self.x == other.x
[INFO] [stdout]    | |__________________________^ help: try: `self.x == other.x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> day01/puzzle2.rs:64:7
[INFO] [stdout]    |
[INFO] [stdout] 64 | /       return match s.dir {
[INFO] [stdout] 65 | |          Dir::D0 => State {
[INFO] [stdout] 66 | |             x: s.x - 0,
[INFO] [stdout] 67 | |             y: s.y - 1,
[INFO] [stdout] ...  |
[INFO] [stdout] 88 | |          },
[INFO] [stdout] 89 | |       }
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 64 ~       match s.dir {
[INFO] [stdout] 65 +          Dir::D0 => State {
[INFO] [stdout] 66 +             x: s.x - 0,
[INFO] [stdout] 67 +             y: s.y - 1,
[INFO] [stdout] 68 +             dir: s.dir,
[INFO] [stdout] 69 +             index: s.index + 1,
[INFO] [stdout] 70 +          },
[INFO] [stdout] 71 +          Dir::D1 => State {
[INFO] [stdout] 72 +             x: s.x + 1,
[INFO] [stdout] 73 +             y: s.y + 0,
[INFO] [stdout] 74 +             dir: s.dir,
[INFO] [stdout] 75 +             index: s.index + 1,
[INFO] [stdout] 76 +          },
[INFO] [stdout] 77 +          Dir::D2 => State {
[INFO] [stdout] 78 +             x: s.x + 0,
[INFO] [stdout] 79 +             y: s.y + 1,
[INFO] [stdout] 80 +             dir: s.dir,
[INFO] [stdout] 81 +             index: s.index + 1,
[INFO] [stdout] 82 +          },
[INFO] [stdout] 83 +          Dir::D3 => State {
[INFO] [stdout] 84 +             x: s.x - 1,
[INFO] [stdout] 85 +             y: s.y - 0,
[INFO] [stdout] 86 +             dir: s.dir,
[INFO] [stdout] 87 +             index: s.index + 1,
[INFO] [stdout] 88 +          },
[INFO] [stdout] 89 +       }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> day01/puzzle2.rs:66:16
[INFO] [stdout]    |
[INFO] [stdout] 66 |             x: s.x - 0,
[INFO] [stdout]    |                ^^^^^^^ help: consider reducing it to: `s.x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout]    = note: `#[warn(clippy::identity_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> day01/puzzle2.rs:73:16
[INFO] [stdout]    |
[INFO] [stdout] 73 |             y: s.y + 0,
[INFO] [stdout]    |                ^^^^^^^ help: consider reducing it to: `s.y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> day01/puzzle2.rs:78:16
[INFO] [stdout]    |
[INFO] [stdout] 78 |             x: s.x + 0,
[INFO] [stdout]    |                ^^^^^^^ help: consider reducing it to: `s.x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> day01/puzzle2.rs:85:16
[INFO] [stdout]    |
[INFO] [stdout] 85 |             y: s.y - 0,
[INFO] [stdout]    |                ^^^^^^^ help: consider reducing it to: `s.y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle2.rs:92:7
[INFO] [stdout]     |
[INFO] [stdout]  92 | /       return match i {
[INFO] [stdout]  93 | |          Instruction::L => State {
[INFO] [stdout]  94 | |             x: s.x,
[INFO] [stdout]  95 | |             y: s.y,
[INFO] [stdout] ...   |
[INFO] [stdout] 105 | |          Instruction::F => State::consume_f(s),
[INFO] [stdout] 106 | |       }
[INFO] [stdout]     | |_______^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout]  92 ~       match i {
[INFO] [stdout]  93 +          Instruction::L => State {
[INFO] [stdout]  94 +             x: s.x,
[INFO] [stdout]  95 +             y: s.y,
[INFO] [stdout]  96 +             dir: Dir::consume_l(s.dir),
[INFO] [stdout]  97 +             index: s.index + 1,
[INFO] [stdout]  98 +          },
[INFO] [stdout]  99 +          Instruction::R => State {
[INFO] [stdout] 100 +             x: s.x,
[INFO] [stdout] 101 +             y: s.y,
[INFO] [stdout] 102 +             dir: Dir::consume_r(s.dir),
[INFO] [stdout] 103 +             index: s.index + 1,
[INFO] [stdout] 104 +          },
[INFO] [stdout] 105 +          Instruction::F => State::consume_f(s),
[INFO] [stdout] 106 +       }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle2.rs:110:7
[INFO] [stdout]     |
[INFO] [stdout] 110 |       return dist.try_into().unwrap();
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 110 -       return dist.try_into().unwrap();
[INFO] [stdout] 110 +       dist.try_into().unwrap()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> day01/puzzle2.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 |    return v;
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 136 -    return v;
[INFO] [stdout] 136 +    v
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]    --> day01/puzzle2.rs:128:20
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let num_fs = match maybe_num_fs {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 129 | |          Some(num_fs) => num_fs,
[INFO] [stdout] 130 | |          None => 0,
[INFO] [stdout] 131 | |       };
[INFO] [stdout]     | |_______^ help: replace it with: `maybe_num_fs.unwrap_or_default()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout]     = note: `#[warn(clippy::manual_unwrap_or_default)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "9be7b3e0a9b032c6ba4cc8a4066414a96f69201cc0313559e0b7d07e692d7113", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9be7b3e0a9b032c6ba4cc8a4066414a96f69201cc0313559e0b7d07e692d7113", kill_on_drop: false }`
[INFO] [stdout] 9be7b3e0a9b032c6ba4cc8a4066414a96f69201cc0313559e0b7d07e692d7113