[INFO] cloning repository https://github.com/jpxd/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jpxd/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjpxd%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjpxd%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9715c2c5299f3046e56faf255956f4e3305d02a5
[INFO] linting jpxd/aoc2020 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjpxd%2Faoc2020" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jpxd/aoc2020
[INFO] finished tweaking git repo https://github.com/jpxd/aoc2020
[INFO] tweaked toml for git repo https://github.com/jpxd/aoc2020 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jpxd/aoc2020 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/jpxd/aoc2020 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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] c091bf0ccfbf3b78053c1c6350be101aa7db6d947ee1140b3dcf13b2913cfa4e
[INFO] running `Command { std: "docker" "start" "-a" "c091bf0ccfbf3b78053c1c6350be101aa7db6d947ee1140b3dcf13b2913cfa4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c091bf0ccfbf3b78053c1c6350be101aa7db6d947ee1140b3dcf13b2913cfa4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c091bf0ccfbf3b78053c1c6350be101aa7db6d947ee1140b3dcf13b2913cfa4e", kill_on_drop: false }`
[INFO] [stdout] c091bf0ccfbf3b78053c1c6350be101aa7db6d947ee1140b3dcf13b2913cfa4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] b7006fb87e774aeddee42a36a4295a6e86081813f85a2a9bae92efdfb6373977
[INFO] running `Command { std: "docker" "start" "-a" "b7006fb87e774aeddee42a36a4295a6e86081813f85a2a9bae92efdfb6373977", kill_on_drop: false }`
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `filter_map()` will run forever if the iterator repeatedly produces an `Err`
[INFO] [stdout]   --> src/bin/day8.rs:77:14
[INFO] [stdout]    |
[INFO] [stdout] 77 |             .filter_map(|l| l.ok())
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `map_while(Result::ok)`
[INFO] [stdout]    |
[INFO] [stdout] note: this expression returning a `std::io::Lines` may produce an infinite number of `Err` in case of a read error
[INFO] [stdout]   --> src/bin/day8.rs:76:23
[INFO] [stdout]    |
[INFO] [stdout] 76 |         instructions: lines
[INFO] [stdout]    |                       ^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#lines_filter_map_ok
[INFO] [stdout]    = note: `#[warn(clippy::lines_filter_map_ok)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/day17.rs:74:28
[INFO] [stdout]    |
[INFO] [stdout] 74 |                           if (active && (surrounding == 2 || surrounding == 3))
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 75 | |                             || (!active && surrounding == 3)
[INFO] [stdout]    | |____________________________________________________________^
[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] help: try
[INFO] [stdout]    |
[INFO] [stdout] 74 -                         if (active && (surrounding == 2 || surrounding == 3))
[INFO] [stdout] 75 -                             || (!active && surrounding == 3)
[INFO] [stdout] 74 +                         if !(!active && surrounding != 3 || surrounding != 2 && surrounding != 3)
[INFO] [stdout]    |
[INFO] [stdout] 74 -                         if (active && (surrounding == 2 || surrounding == 3))
[INFO] [stdout] 75 -                             || (!active && surrounding == 3)
[INFO] [stdout] 74 +                         if (surrounding == 3 || surrounding == 2) && (surrounding == 3 || active)
[INFO] [stdout]    |
[INFO] [stdout] 74 -                         if (active && (surrounding == 2 || surrounding == 3))
[INFO] [stdout] 75 -                             || (!active && surrounding == 3)
[INFO] [stdout] 74 +                         if surrounding == 3 || active && surrounding == 2
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day4.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | /         return REQUIRED_FIELDS
[INFO] [stdout] 32 | |             .iter()
[INFO] [stdout] 33 | |             .filter(|k| self.fields.contains_key(&k.to_string()))
[INFO] [stdout] 34 | |             .count()
[INFO] [stdout] 35 | |             == REQUIRED_FIELDS.len();
[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] 31 ~         REQUIRED_FIELDS
[INFO] [stdout] 32 +             .iter()
[INFO] [stdout] 33 +             .filter(|k| self.fields.contains_key(&k.to_string()))
[INFO] [stdout] 34 +             .count()
[INFO] [stdout] 35 ~             == REQUIRED_FIELDS.len()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         if !(byr >= 1920 && byr <= 2002) {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(1920..=2002).contains(&byr)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout]    = note: `#[warn(clippy::manual_range_contains)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         if !(iyr >= 2010 && iyr <= 2020) {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(2010..=2020).contains(&iyr)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         if !(eyr >= 2020 && eyr <= 2030) {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(2020..=2030).contains(&eyr)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |             "cm" => hgt_num >= 150 && hgt_num <= 193,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(150..=193).contains(&hgt_num)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:56:21
[INFO] [stdout]    |
[INFO] [stdout] 56 |             "in" => hgt_num >= 59 && hgt_num <= 76,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(59..=76).contains(&hgt_num)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day4.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | /         return REQUIRED_FIELDS
[INFO] [stdout] 32 | |             .iter()
[INFO] [stdout] 33 | |             .filter(|k| self.fields.contains_key(&k.to_string()))
[INFO] [stdout] 34 | |             .count()
[INFO] [stdout] 35 | |             == REQUIRED_FIELDS.len();
[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] 31 ~         REQUIRED_FIELDS
[INFO] [stdout] 32 +             .iter()
[INFO] [stdout] 33 +             .filter(|k| self.fields.contains_key(&k.to_string()))
[INFO] [stdout] 34 +             .count()
[INFO] [stdout] 35 ~             == REQUIRED_FIELDS.len()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         if !(byr >= 1920 && byr <= 2002) {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(1920..=2002).contains(&byr)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout]    = note: `#[warn(clippy::manual_range_contains)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         if !(iyr >= 2010 && iyr <= 2020) {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(2010..=2020).contains(&iyr)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         if !(eyr >= 2020 && eyr <= 2030) {
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(2020..=2030).contains(&eyr)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:55:21
[INFO] [stdout]    |
[INFO] [stdout] 55 |             "cm" => hgt_num >= 150 && hgt_num <= 193,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(150..=193).contains(&hgt_num)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day4.rs:56:21
[INFO] [stdout]    |
[INFO] [stdout] 56 |             "in" => hgt_num >= 59 && hgt_num <= 76,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(59..=76).contains(&hgt_num)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day7.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         return 1 + sum_subcolors;
[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] 45 -         return 1 + sum_subcolors;
[INFO] [stdout] 45 +         1 + sum_subcolors
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         return count >= self.policy.num1 && count <= self.policy.num2;
[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] 26 -         return count >= self.policy.num1 && count <= self.policy.num2;
[INFO] [stdout] 26 +         count >= self.policy.num1 && count <= self.policy.num2
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `map()` won't have an effect on the call to `count()`
[INFO] [stdout]   --> src/bin/day2.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |           let count = self
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 22 | |             .password
[INFO] [stdout] 23 | |             .chars()
[INFO] [stdout] 24 | |             .map(|c| c == self.policy.symbol)
[INFO] [stdout] 25 | |             .count();
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: make sure you did not confuse `map` with `filter`, `for_each` or `inspect`
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_map
[INFO] [stdout]    = note: `#[warn(clippy::suspicious_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         return (a || b) && (a != 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] 31 -         return (a || b) && (a != b);
[INFO] [stdout] 31 +         (a || b) && (a != b)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     return Some(passwords);
[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] 53 -     return Some(passwords);
[INFO] [stdout] 53 +     Some(passwords)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         return count >= self.policy.num1 && count <= self.policy.num2;
[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] 26 -         return count >= self.policy.num1 && count <= self.policy.num2;
[INFO] [stdout] 26 +         count >= self.policy.num1 && count <= self.policy.num2
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `map()` won't have an effect on the call to `count()`
[INFO] [stdout]   --> src/bin/day2.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |           let count = self
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 22 | |             .password
[INFO] [stdout] 23 | |             .chars()
[INFO] [stdout] 24 | |             .map(|c| c == self.policy.symbol)
[INFO] [stdout] 25 | |             .count();
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: make sure you did not confuse `map` with `filter`, `for_each` or `inspect`
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_map
[INFO] [stdout]    = note: `#[warn(clippy::suspicious_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         return (a || b) && (a != 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] 31 -         return (a || b) && (a != b);
[INFO] [stdout] 31 +         (a || b) && (a != b)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     return Some(passwords);
[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] 53 -     return Some(passwords);
[INFO] [stdout] 53 +     Some(passwords)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]   --> src/bin/day2.rs:47:25
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 symbol: matches.get(3)?.as_str().chars().nth(0)?,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `matches.get(3)?.as_str().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: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]   --> src/bin/day2.rs:47:25
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 symbol: matches.get(3)?.as_str().chars().nth(0)?,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `matches.get(3)?.as_str().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]   --> src/bin/day1.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     return Some(numbers);
[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] 11 -     return Some(numbers);
[INFO] [stdout] 11 +     Some(numbers)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/bin/day16.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn invalid_ticket_numbers(&self, ticket: &Vec<i64>) -> Vec<i64> {
[INFO] [stdout]    |                                              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 42 -     fn invalid_ticket_numbers(&self, ticket: &Vec<i64>) -> Vec<i64> {
[INFO] [stdout] 42 +     fn invalid_ticket_numbers(&self, ticket: &[i64]) -> Vec<i64> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `filter_map()` will run forever if the iterator repeatedly produces an `Err`
[INFO] [stdout]   --> src/bin/day8.rs:77:14
[INFO] [stdout]    |
[INFO] [stdout] 77 |             .filter_map(|l| l.ok())
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `map_while(Result::ok)`
[INFO] [stdout]    |
[INFO] [stdout] note: this expression returning a `std::io::Lines` may produce an infinite number of `Err` in case of a read error
[INFO] [stdout]   --> src/bin/day8.rs:76:23
[INFO] [stdout]    |
[INFO] [stdout] 76 |         instructions: lines
[INFO] [stdout]    |                       ^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#lines_filter_map_ok
[INFO] [stdout]    = note: `#[warn(clippy::lines_filter_map_ok)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day3.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     return Some(map);
[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] 48 -     return Some(map);
[INFO] [stdout] 48 +     Some(map)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you are using an explicit closure for copying elements
[INFO] [stdout]   --> src/bin/day16.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 | /         ticket
[INFO] [stdout] 44 | |             .iter()
[INFO] [stdout] 45 | |             .filter(|value| {
[INFO] [stdout] 46 | |                 self.rules
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |             })
[INFO] [stdout] 53 | |             .map(|value| *value)
[INFO] [stdout]    | |________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stdout]    = note: `#[warn(clippy::map_clone)]` on by default
[INFO] [stdout] help: consider calling the dedicated `copied` method
[INFO] [stdout]    |
[INFO] [stdout] 43 ~         ticket
[INFO] [stdout] 44 +             .iter()
[INFO] [stdout] 45 +             .filter(|value| {
[INFO] [stdout] 46 +                 self.rules
[INFO] [stdout] 47 +                     .iter()
[INFO] [stdout] 48 +                     .find(|(_name, ranges)| {
[INFO] [stdout] 49 +                         ranges.iter().find(|range| range.contains(value)).is_some()
[INFO] [stdout] 50 +                     })
[INFO] [stdout] 51 +                     .is_none()
[INFO] [stdout] 52 +             }).copied()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]   --> src/bin/day16.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |               .map(|ticket| self.invalid_ticket_numbers(ticket))
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 60 | |             .flatten()
[INFO] [stdout]    | |______________________^ help: try replacing `map` with `flat_map` and remove the `.flatten()`: `flat_map(|ticket| self.invalid_ticket_numbers(ticket))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten
[INFO] [stdout]    = note: `#[warn(clippy::map_flatten)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]    --> src/bin/day16.rs:107:14
[INFO] [stdout]     |
[INFO] [stdout] 107 |             .fold(1, |prev, value| prev * value)
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `product()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_fold)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you are using an explicit closure for copying elements
[INFO] [stdout]   --> src/bin/day6.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |             intersection = intersection.intersection(person).map(|c| *c).collect()
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling the dedicated `copied` method: `intersection.intersection(person).copied()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stdout]    = note: `#[warn(clippy::map_clone)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> src/bin/day11.rs:40:60
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 while y < self.grid.len() && x < self.grid[y as usize].len() {
[INFO] [stdout]    |                                                            ^^^^^^^^^^ help: try: `{ y }`
[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: casting to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> src/bin/day11.rs:41:37
[INFO] [stdout]    |
[INFO] [stdout] 41 |                     match self.grid[y as usize][x as usize] {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: try: `{ y }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> src/bin/day11.rs:41:49
[INFO] [stdout]    |
[INFO] [stdout] 41 |                     match self.grid[y as usize][x as usize] {
[INFO] [stdout]    |                                                 ^^^^^^^^^^ help: try: `x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day5.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     return Some(passes);
[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] 39 -     return Some(passes);
[INFO] [stdout] 39 +     Some(passes)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `flat_map` with an identity function
[INFO] [stdout]   --> src/bin/day11.rs:82:14
[INFO] [stdout]    |
[INFO] [stdout] 82 |             .flat_map(|s| s)
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^ help: try: `flatten()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#flat_map_identity
[INFO] [stdout]    = note: `#[warn(clippy::flat_map_identity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/bin/day16.rs:42:46
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn invalid_ticket_numbers(&self, ticket: &Vec<i64>) -> Vec<i64> {
[INFO] [stdout]    |                                              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 42 -     fn invalid_ticket_numbers(&self, ticket: &Vec<i64>) -> Vec<i64> {
[INFO] [stdout] 42 +     fn invalid_ticket_numbers(&self, ticket: &[i64]) -> Vec<i64> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you are using an explicit closure for copying elements
[INFO] [stdout]   --> src/bin/day16.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 | /         ticket
[INFO] [stdout] 44 | |             .iter()
[INFO] [stdout] 45 | |             .filter(|value| {
[INFO] [stdout] 46 | |                 self.rules
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |             })
[INFO] [stdout] 53 | |             .map(|value| *value)
[INFO] [stdout]    | |________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stdout]    = note: `#[warn(clippy::map_clone)]` on by default
[INFO] [stdout] help: consider calling the dedicated `copied` method
[INFO] [stdout]    |
[INFO] [stdout] 43 ~         ticket
[INFO] [stdout] 44 +             .iter()
[INFO] [stdout] 45 +             .filter(|value| {
[INFO] [stdout] 46 +                 self.rules
[INFO] [stdout] 47 +                     .iter()
[INFO] [stdout] 48 +                     .find(|(_name, ranges)| {
[INFO] [stdout] 49 +                         ranges.iter().find(|range| range.contains(value)).is_some()
[INFO] [stdout] 50 +                     })
[INFO] [stdout] 51 +                     .is_none()
[INFO] [stdout] 52 +             }).copied()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]   --> src/bin/day16.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |               .map(|ticket| self.invalid_ticket_numbers(ticket))
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 60 | |             .flatten()
[INFO] [stdout]    | |______________________^ help: try replacing `map` with `flat_map` and remove the `.flatten()`: `flat_map(|ticket| self.invalid_ticket_numbers(ticket))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten
[INFO] [stdout]    = note: `#[warn(clippy::map_flatten)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]    --> src/bin/day16.rs:107:14
[INFO] [stdout]     |
[INFO] [stdout] 107 |             .fold(1, |prev, value| prev * value)
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `product()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_fold)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/bin/day5.rs:55:32
[INFO] [stdout]    |
[INFO] [stdout] 55 |             !seat_ids.contains(&id) && seat_ids.contains(&(id - 1)) && seat_ids.contains(&(id + 1))
[INFO] [stdout]    |                                ^^^ help: change this to: `id`
[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]   --> src/bin/day3.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     return Some(map);
[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] 48 -     return Some(map);
[INFO] [stdout] 48 +     Some(map)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day5.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     return Some(passes);
[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] 39 -     return Some(passes);
[INFO] [stdout] 39 +     Some(passes)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/day17.rs:74:28
[INFO] [stdout]    |
[INFO] [stdout] 74 |                           if (active && (surrounding == 2 || surrounding == 3))
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 75 | |                             || (!active && surrounding == 3)
[INFO] [stdout]    | |____________________________________________________________^
[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] help: try
[INFO] [stdout]    |
[INFO] [stdout] 74 -                         if (active && (surrounding == 2 || surrounding == 3))
[INFO] [stdout] 75 -                             || (!active && surrounding == 3)
[INFO] [stdout] 74 +                         if !(!active && surrounding != 3 || surrounding != 2 && surrounding != 3)
[INFO] [stdout]    |
[INFO] [stdout] 74 -                         if (active && (surrounding == 2 || surrounding == 3))
[INFO] [stdout] 75 -                             || (!active && surrounding == 3)
[INFO] [stdout] 74 +                         if (surrounding == 3 || surrounding == 2) && (surrounding == 3 || active)
[INFO] [stdout]    |
[INFO] [stdout] 74 -                         if (active && (surrounding == 2 || surrounding == 3))
[INFO] [stdout] 75 -                             || (!active && surrounding == 3)
[INFO] [stdout] 74 +                         if surrounding == 3 || active && surrounding == 2
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/bin/day5.rs:55:32
[INFO] [stdout]    |
[INFO] [stdout] 55 |             !seat_ids.contains(&id) && seat_ids.contains(&(id - 1)) && seat_ids.contains(&(id + 1))
[INFO] [stdout]    |                                ^^^ help: change this to: `id`
[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 to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> src/bin/day11.rs:40:60
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 while y < self.grid.len() && x < self.grid[y as usize].len() {
[INFO] [stdout]    |                                                            ^^^^^^^^^^ help: try: `{ y }`
[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: casting to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> src/bin/day11.rs:41:37
[INFO] [stdout]    |
[INFO] [stdout] 41 |                     match self.grid[y as usize][x as usize] {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: try: `{ y }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> src/bin/day11.rs:41:49
[INFO] [stdout]    |
[INFO] [stdout] 41 |                     match self.grid[y as usize][x as usize] {
[INFO] [stdout]    |                                                 ^^^^^^^^^^ help: try: `x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `flat_map` with an identity function
[INFO] [stdout]   --> src/bin/day11.rs:82:14
[INFO] [stdout]    |
[INFO] [stdout] 82 |             .flat_map(|s| s)
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^ help: try: `flatten()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#flat_map_identity
[INFO] [stdout]    = note: `#[warn(clippy::flat_map_identity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day7.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         return 1 + sum_subcolors;
[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] 45 -         return 1 + sum_subcolors;
[INFO] [stdout] 45 +         1 + sum_subcolors
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day1.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     return Some(numbers);
[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] 11 -     return Some(numbers);
[INFO] [stdout] 11 +     Some(numbers)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you are using an explicit closure for copying elements
[INFO] [stdout]   --> src/bin/day6.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |             intersection = intersection.intersection(person).map(|c| *c).collect()
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider calling the dedicated `copied` method: `intersection.intersection(person).copied()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stdout]    = note: `#[warn(clippy::map_clone)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.40s
[INFO] running `Command { std: "docker" "inspect" "b7006fb87e774aeddee42a36a4295a6e86081813f85a2a9bae92efdfb6373977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7006fb87e774aeddee42a36a4295a6e86081813f85a2a9bae92efdfb6373977", kill_on_drop: false }`
[INFO] [stdout] b7006fb87e774aeddee42a36a4295a6e86081813f85a2a9bae92efdfb6373977