[INFO] cloning repository https://github.com/scott113341/advent_of_code_2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/scott113341/advent_of_code_2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscott113341%2Fadvent_of_code_2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscott113341%2Fadvent_of_code_2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 567cecc3add67b3778c0eff3ac7623e67afef404
[INFO] linting scott113341/advent_of_code_2021 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscott113341%2Fadvent_of_code_2021" "/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/scott113341/advent_of_code_2021
[INFO] finished tweaking git repo https://github.com/scott113341/advent_of_code_2021
[INFO] tweaked toml for git repo https://github.com/scott113341/advent_of_code_2021 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/scott113341/advent_of_code_2021 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/scott113341/advent_of_code_2021 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] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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] 9801bce6670d6b87b412faeb9370c17891a75da8f7577d7a0e0be0c8d7933560
[INFO] running `Command { std: "docker" "start" "-a" "9801bce6670d6b87b412faeb9370c17891a75da8f7577d7a0e0be0c8d7933560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9801bce6670d6b87b412faeb9370c17891a75da8f7577d7a0e0be0c8d7933560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9801bce6670d6b87b412faeb9370c17891a75da8f7577d7a0e0be0c8d7933560", kill_on_drop: false }`
[INFO] [stdout] 9801bce6670d6b87b412faeb9370c17891a75da8f7577d7a0e0be0c8d7933560
[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] b57714c5c5ef7554920c20eb0cf3968c4f71e8929270e1acf28274b020a9ec01
[INFO] running `Command { std: "docker" "start" "-a" "b57714c5c5ef7554920c20eb0cf3968c4f71e8929270e1acf28274b020a9ec01", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking day_07 v0.1.0 (/opt/rustwide/workdir/day_07)
[INFO] [stderr]     Checking day_10 v0.1.0 (/opt/rustwide/workdir/day_10)
[INFO] [stderr]     Checking day_01 v0.1.0 (/opt/rustwide/workdir/day_01)
[INFO] [stderr]     Checking day_03 v0.1.0 (/opt/rustwide/workdir/day_03)
[INFO] [stderr]     Checking day_04 v0.1.0 (/opt/rustwide/workdir/day_04)
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> day_03/src/data.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             gr = gr << 1;
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: replace it with: `gr <<= 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]    = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_09 v0.1.0 (/opt/rustwide/workdir/day_09)
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day_03/src/data.rs:90:46
[INFO] [stdout]    |
[INFO] [stdout] 90 |             KeepLeastCommonTiebreakerZero => !(zero_count <= one_count) as u32, // 0
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(zero_count > one_count)`
[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: useless conversion to the same type: `u32`
[INFO] [stdout]   --> day_03/src/main.rs:28:26
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mask = 2_u32.pow(bits.into()) - 1;
[INFO] [stdout]    |                          ^^^^^^^^^^^ help: consider removing `.into()`: `bits`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]    = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_13 v0.1.0 (/opt/rustwide/workdir/day_13)
[INFO] [stderr]     Checking day_15 v0.1.0 (/opt/rustwide/workdir/day_15)
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> day_03/src/data.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             gr = gr << 1;
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: replace it with: `gr <<= 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]    = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> day_03/src/data.rs:90:46
[INFO] [stdout]    |
[INFO] [stdout] 90 |             KeepLeastCommonTiebreakerZero => !(zero_count <= one_count) as u32, // 0
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(zero_count > one_count)`
[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: useless conversion to the same type: `u32`
[INFO] [stdout]   --> day_03/src/main.rs:28:26
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mask = 2_u32.pow(bits.into()) - 1;
[INFO] [stdout]    |                          ^^^^^^^^^^^ help: consider removing `.into()`: `bits`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]    = note: `#[warn(clippy::useless_conversion)]` 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]  --> day_04/src/data.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn parse_numbers_to_call(lines: &Vec<String>) -> Vec<usize> {
[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] 1 - pub fn parse_numbers_to_call(lines: &Vec<String>) -> Vec<usize> {
[INFO] [stdout] 1 + pub fn parse_numbers_to_call(lines: &[String]) -> Vec<usize> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_04/src/data.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn parse_boards(lines: &Vec<String>) -> Vec<Board> {
[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] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 10 - pub fn parse_boards(lines: &Vec<String>) -> Vec<Board> {
[INFO] [stdout] 10 + pub fn parse_boards(lines: &[String]) -> Vec<Board> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> day_04/src/data.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |             assert_eq!(board.mark_number(n), false);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout]     = note: `#[warn(clippy::bool_assert_comparison)]` on by default
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 114 -             assert_eq!(board.mark_number(n), false);
[INFO] [stdout] 114 +             assert!(!board.mark_number(n));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> day_04/src/data.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         assert_eq!(board.mark_number(24), true);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 118 -         assert_eq!(board.mark_number(24), true);
[INFO] [stdout] 118 +         assert!(board.mark_number(24));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant closure
[INFO] [stdout]   --> day_04/src/main.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |         .map(|b| RefCell::new(b))
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^ help: replace the closure with the associated function itself: `RefCell::new`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stdout]    = note: `#[warn(clippy::redundant_closure)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> day_09/src/main.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 |         .fold(1, |total, size| total * size)
[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: using `.clone()` on a double reference, which returns `&data::Coord` instead of cloning the inner type
[INFO] [stdout]   --> day_09/src/data.rs:46:41
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     counted.insert(coord.clone());
[INFO] [stdout]    |                                         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` 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]   --> day_15/src/data.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(lines: &Vec<String>) -> Cave {
[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] 17 -     pub fn new(lines: &Vec<String>) -> Cave {
[INFO] [stdout] 17 +     pub fn new(lines: &[String]) -> Cave {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `filter_map` with an identity function
[INFO] [stdout]   --> day_15/src/data.rs:65:10
[INFO] [stdout]    |
[INFO] [stdout] 65 |         .filter_map(|e| e)
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^ help: try: `flatten()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#filter_map_identity
[INFO] [stdout]    = note: `#[warn(clippy::filter_map_identity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)`
[INFO] [stdout]   --> day_15/src/data.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             self.get(&up).and_then(|risk| Some((up, risk))),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get(&up).map(|risk| (up, risk))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bind_instead_of_map
[INFO] [stdout]    = note: `#[warn(clippy::bind_instead_of_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)`
[INFO] [stdout]   --> day_15/src/data.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |             self.get(&down).and_then(|risk| Some((down, risk))),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get(&down).map(|risk| (down, risk))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bind_instead_of_map
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)`
[INFO] [stdout]   --> day_15/src/data.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |             self.get(&left).and_then(|risk| Some((left, risk))),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get(&left).map(|risk| (left, risk))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bind_instead_of_map
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_12 v0.1.0 (/opt/rustwide/workdir/day_12)
[INFO] [stdout] warning: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)`
[INFO] [stdout]   --> day_15/src/data.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |             self.get(&right).and_then(|risk| Some((right, risk))),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get(&right).map(|risk| (right, risk))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bind_instead_of_map
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_02 v0.1.0 (/opt/rustwide/workdir/day_02)
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_15/src/data.rs:85:43
[INFO] [stdout]    |
[INFO] [stdout] 85 |             if visited_nodes.contains_key(&end_node) {
[INFO] [stdout]    |                                           ^^^^^^^^^ help: change this to: `end_node`
[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: useless conversion to the same type: `std::iter::Map<std::str::Chars<'_>, {closure@day_15/src/main.rs:35:39: 35:42}>`
[INFO] [stdout]   --> day_15/src/main.rs:35:22
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let digits = line.chars().map(|c| c.to_digit(10).unwrap()).into_iter();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `line.chars().map(|c| c.to_digit(10).unwrap())`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]    = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::iter::Map<std::str::Chars<'_>, {closure@day_15/src/main.rs:51:43: 51:46}>`
[INFO] [stdout]   --> day_15/src/main.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 51 |             let digits = line.chars().map(|c| c.to_digit(10).unwrap()).into_iter();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `line.chars().map(|c| c.to_digit(10).unwrap())`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]  --> day_04/src/data.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn parse_numbers_to_call(lines: &Vec<String>) -> Vec<usize> {
[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] 1 - pub fn parse_numbers_to_call(lines: &Vec<String>) -> Vec<usize> {
[INFO] [stdout] 1 + pub fn parse_numbers_to_call(lines: &[String]) -> Vec<usize> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_06 v0.1.0 (/opt/rustwide/workdir/day_06)
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_04/src/data.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn parse_boards(lines: &Vec<String>) -> Vec<Board> {
[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] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 10 - pub fn parse_boards(lines: &Vec<String>) -> Vec<Board> {
[INFO] [stdout] 10 + pub fn parse_boards(lines: &[String]) -> Vec<Board> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_13/src/data.rs:42:23
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(lines: &Vec<String>) -> Paper {
[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 -     pub fn new(lines: &Vec<String>) -> Paper {
[INFO] [stdout] 42 +     pub fn new(lines: &[String]) -> Paper {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant closure
[INFO] [stdout]   --> day_04/src/main.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |         .map(|b| RefCell::new(b))
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^ help: replace the closure with the associated function itself: `RefCell::new`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stdout]    = note: `#[warn(clippy::redundant_closure)]` 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]   --> day_13/src/data.rs:42:23
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn new(lines: &Vec<String>) -> Paper {
[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 -     pub fn new(lines: &Vec<String>) -> Paper {
[INFO] [stdout] 42 +     pub fn new(lines: &[String]) -> Paper {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_08 v0.1.0 (/opt/rustwide/workdir/day_08)
[INFO] [stdout] warning: this lifetime isn't used in the function definition
[INFO] [stdout]   --> day_12/src/data.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn cave<'a>(&self, name: impl Into<CaveName>) -> &Cave {
[INFO] [stdout]    |                 ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::extra_unused_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this lifetime isn't used in the function definition
[INFO] [stdout]   --> day_12/src/data.rs:33:27
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn adjacent_caves<'a>(&self, name: impl Into<CaveName>) -> Vec<&Cave> {
[INFO] [stdout]    |                           ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_05 v0.1.0 (/opt/rustwide/workdir/day_05)
[INFO] [stderr]     Checking day_14 v0.1.0 (/opt/rustwide/workdir/day_14)
[INFO] [stdout] warning: this if-then-else expression returns a bool literal
[INFO] [stdout]   --> day_12/src/data.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | /         if cave.is_small && path.contains(cave) {
[INFO] [stdout] 50 | |             false
[INFO] [stdout] 51 | |         } else {
[INFO] [stdout] 52 | |             true
[INFO] [stdout] 53 | |         }
[INFO] [stdout]    | |_________^ help: you can reduce it to: `!(cave.is_small && path.contains(cave))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stdout]    = note: `#[warn(clippy::needless_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_12/src/main.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 |     part_1_paths(&cave_system, &start, vec![start.clone()]).len()
[INFO] [stdout]    |                                ^^^^^^ help: change this to: `start`
[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: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_12/src/main.rs:25:32
[INFO] [stdout]    |
[INFO] [stdout] 25 |     part_2_paths(&cave_system, &start, vec![start.clone()]).len()
[INFO] [stdout]    |                                ^^^^^^ help: change this to: `start`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> day_15/src/data.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(lines: &Vec<String>) -> Cave {
[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] 17 -     pub fn new(lines: &Vec<String>) -> Cave {
[INFO] [stdout] 17 +     pub fn new(lines: &[String]) -> Cave {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `filter_map` with an identity function
[INFO] [stdout]   --> day_15/src/data.rs:65:10
[INFO] [stdout]    |
[INFO] [stdout] 65 |         .filter_map(|e| e)
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^ help: try: `flatten()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#filter_map_identity
[INFO] [stdout]    = note: `#[warn(clippy::filter_map_identity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)`
[INFO] [stdout]   --> day_15/src/data.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             self.get(&up).and_then(|risk| Some((up, risk))),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get(&up).map(|risk| (up, risk))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bind_instead_of_map
[INFO] [stdout]    = note: `#[warn(clippy::bind_instead_of_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)`
[INFO] [stdout]   --> day_15/src/data.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |             self.get(&down).and_then(|risk| Some((down, risk))),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get(&down).map(|risk| (down, risk))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bind_instead_of_map
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)`
[INFO] [stdout]   --> day_15/src/data.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |             self.get(&left).and_then(|risk| Some((left, risk))),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get(&left).map(|risk| (left, risk))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bind_instead_of_map
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)`
[INFO] [stdout]   --> day_15/src/data.rs:62:13
[INFO] [stdout]    |
[INFO] [stdout] 62 |             self.get(&right).and_then(|risk| Some((right, risk))),
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.get(&right).map(|risk| (right, risk))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bind_instead_of_map
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_15/src/data.rs:85:43
[INFO] [stdout]    |
[INFO] [stdout] 85 |             if visited_nodes.contains_key(&end_node) {
[INFO] [stdout]    |                                           ^^^^^^^^^ help: change this to: `end_node`
[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: useless conversion to the same type: `std::iter::Map<std::str::Chars<'_>, {closure@day_15/src/main.rs:35:39: 35:42}>`
[INFO] [stdout]   --> day_15/src/main.rs:35:22
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let digits = line.chars().map(|c| c.to_digit(10).unwrap()).into_iter();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `line.chars().map(|c| c.to_digit(10).unwrap())`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]    = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::iter::Map<std::str::Chars<'_>, {closure@day_15/src/main.rs:51:43: 51:46}>`
[INFO] [stdout]   --> day_15/src/main.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 51 |             let digits = line.chars().map(|c| c.to_digit(10).unwrap()).into_iter();
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `line.chars().map(|c| c.to_digit(10).unwrap())`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `skip(..).next()` on an iterator
[INFO] [stdout]   --> day_06/src/main.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fish_state.skip(79).next().unwrap().fish_count()
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(79)`
[INFO] [stdout]    |
[INFO] [stdout] help: for this change `fish_state` has to be mutable
[INFO] [stdout]   --> day_06/src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let fish_state: FishState = initial_fish.into();
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stdout]    = note: `#[warn(clippy::iter_skip_next)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `skip(..).next()` on an iterator
[INFO] [stdout]   --> day_06/src/main.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fish_state.skip(255).next().unwrap().fish_count()
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(255)`
[INFO] [stdout]    |
[INFO] [stdout] help: for this change `fish_state` has to be mutable
[INFO] [stdout]   --> day_06/src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let fish_state: FishState = initial_fish.into();
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]    --> day_08/src/data.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub struct Solution {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `[char; 7]` which implements the `Copy` trait
[INFO] [stdout]    --> day_08/src/data.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 | /         self.segments
[INFO] [stdout] 171 | |             .clone()
[INFO] [stdout]     | |____________________^ help: try removing the `clone` call: `self.segments`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]     = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Vec`
[INFO] [stdout]   --> day_14/src/data.rs:24:14
[INFO] [stdout]    |
[INFO] [stdout] 24 |             .into_iter()
[INFO] [stdout]    |              ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]    = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `skip(..).next()` on an iterator
[INFO] [stdout]   --> day_06/src/main.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fish_state.skip(79).next().unwrap().fish_count()
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(79)`
[INFO] [stdout]    |
[INFO] [stdout] help: for this change `fish_state` has to be mutable
[INFO] [stdout]   --> day_06/src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let fish_state: FishState = initial_fish.into();
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stdout]    = note: `#[warn(clippy::iter_skip_next)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `skip(..).next()` on an iterator
[INFO] [stdout]   --> day_06/src/main.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fish_state.skip(255).next().unwrap().fish_count()
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^ help: use `nth` instead: `.nth(255)`
[INFO] [stdout]    |
[INFO] [stdout] help: for this change `fish_state` has to be mutable
[INFO] [stdout]   --> day_06/src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let fish_state: FishState = initial_fish.into();
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Vec`
[INFO] [stdout]   --> day_14/src/data.rs:24:14
[INFO] [stdout]    |
[INFO] [stdout] 24 |             .into_iter()
[INFO] [stdout]    |              ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]    = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day_11 v0.1.0 (/opt/rustwide/workdir/day_11)
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]   --> day_11/src/input/mod.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout]  7 |           .map(|line| {
[INFO] [stdout]    |  __________^
[INFO] [stdout]  8 | |             line.chars()
[INFO] [stdout]  9 | |                 .map(|c| c.to_digit(10).unwrap() as usize)
[INFO] [stdout] 10 | |                 .collect::<Vec<_>>()
[INFO] [stdout] 11 | |         })
[INFO] [stdout] 12 | |         .flatten()
[INFO] [stdout]    | |__________________^
[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] help: try replacing `map` with `flat_map` and remove the `.flatten()`
[INFO] [stdout]    |
[INFO] [stdout]  7 ~         .flat_map(|line| {
[INFO] [stdout]  8 +             line.chars()
[INFO] [stdout]  9 +                 .map(|c| c.to_digit(10).unwrap() as usize)
[INFO] [stdout] 10 +                 .collect::<Vec<_>>()
[INFO] [stdout] 11 +         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]   --> day_11/src/input/mod.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 |           .map(|line| {
[INFO] [stdout]    |  __________^
[INFO] [stdout] 24 | |             line.chars()
[INFO] [stdout] 25 | |                 .map(|c| c.to_digit(10).unwrap() as usize)
[INFO] [stdout] 26 | |                 .collect::<Vec<_>>()
[INFO] [stdout] 27 | |         })
[INFO] [stdout] 28 | |         .flatten()
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten
[INFO] [stdout] help: try replacing `map` with `flat_map` and remove the `.flatten()`
[INFO] [stdout]    |
[INFO] [stdout] 23 ~         .flat_map(|line| {
[INFO] [stdout] 24 +             line.chars()
[INFO] [stdout] 25 +                 .map(|c| c.to_digit(10).unwrap() as usize)
[INFO] [stdout] 26 +                 .collect::<Vec<_>>()
[INFO] [stdout] 27 +         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> day_09/src/main.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 |         .fold(1, |total, size| total * size)
[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: using `.clone()` on a double reference, which returns `&data::Coord` instead of cloning the inner type
[INFO] [stdout]   --> day_09/src/data.rs:46:41
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     counted.insert(coord.clone());
[INFO] [stdout]    |                                         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]    --> day_08/src/data.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub struct Solution {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `[char; 7]` which implements the `Copy` trait
[INFO] [stdout]    --> day_08/src/data.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 | /         self.segments
[INFO] [stdout] 171 | |             .clone()
[INFO] [stdout]     | |____________________^ help: try removing the `clone` call: `self.segments`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]     = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]   --> day_11/src/input/mod.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout]  7 |           .map(|line| {
[INFO] [stdout]    |  __________^
[INFO] [stdout]  8 | |             line.chars()
[INFO] [stdout]  9 | |                 .map(|c| c.to_digit(10).unwrap() as usize)
[INFO] [stdout] 10 | |                 .collect::<Vec<_>>()
[INFO] [stdout] 11 | |         })
[INFO] [stdout] 12 | |         .flatten()
[INFO] [stdout]    | |__________________^
[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] help: try replacing `map` with `flat_map` and remove the `.flatten()`
[INFO] [stdout]    |
[INFO] [stdout]  7 ~         .flat_map(|line| {
[INFO] [stdout]  8 +             line.chars()
[INFO] [stdout]  9 +                 .map(|c| c.to_digit(10).unwrap() as usize)
[INFO] [stdout] 10 +                 .collect::<Vec<_>>()
[INFO] [stdout] 11 +         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]   --> day_11/src/input/mod.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 |           .map(|line| {
[INFO] [stdout]    |  __________^
[INFO] [stdout] 24 | |             line.chars()
[INFO] [stdout] 25 | |                 .map(|c| c.to_digit(10).unwrap() as usize)
[INFO] [stdout] 26 | |                 .collect::<Vec<_>>()
[INFO] [stdout] 27 | |         })
[INFO] [stdout] 28 | |         .flatten()
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten
[INFO] [stdout] help: try replacing `map` with `flat_map` and remove the `.flatten()`
[INFO] [stdout]    |
[INFO] [stdout] 23 ~         .flat_map(|line| {
[INFO] [stdout] 24 +             line.chars()
[INFO] [stdout] 25 +                 .map(|c| c.to_digit(10).unwrap() as usize)
[INFO] [stdout] 26 +                 .collect::<Vec<_>>()
[INFO] [stdout] 27 +         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this lifetime isn't used in the function definition
[INFO] [stdout]   --> day_12/src/data.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn cave<'a>(&self, name: impl Into<CaveName>) -> &Cave {
[INFO] [stdout]    |                 ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::extra_unused_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this lifetime isn't used in the function definition
[INFO] [stdout]   --> day_12/src/data.rs:33:27
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn adjacent_caves<'a>(&self, name: impl Into<CaveName>) -> Vec<&Cave> {
[INFO] [stdout]    |                           ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this if-then-else expression returns a bool literal
[INFO] [stdout]   --> day_12/src/data.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | /         if cave.is_small && path.contains(cave) {
[INFO] [stdout] 50 | |             false
[INFO] [stdout] 51 | |         } else {
[INFO] [stdout] 52 | |             true
[INFO] [stdout] 53 | |         }
[INFO] [stdout]    | |_________^ help: you can reduce it to: `!(cave.is_small && path.contains(cave))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stdout]    = note: `#[warn(clippy::needless_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_12/src/main.rs:19:32
[INFO] [stdout]    |
[INFO] [stdout] 19 |     part_1_paths(&cave_system, &start, vec![start.clone()]).len()
[INFO] [stdout]    |                                ^^^^^^ help: change this to: `start`
[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: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> day_12/src/main.rs:25:32
[INFO] [stdout]    |
[INFO] [stdout] 25 |     part_2_paths(&cave_system, &start, vec![start.clone()]).len()
[INFO] [stdout]    |                                ^^^^^^ help: change this to: `start`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking day_17 v0.1.0 (/opt/rustwide/workdir/day_17)
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> day_17/src/data.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |             assert_eq!(pat.in_target_area(), false);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout]     = note: `#[warn(clippy::bool_assert_comparison)]` on by default
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 128 -             assert_eq!(pat.in_target_area(), false);
[INFO] [stdout] 128 +             assert!(!pat.in_target_area());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> day_17/src/data.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         assert_eq!(pat.in_target_area(), true);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 131 -         assert_eq!(pat.in_target_area(), true);
[INFO] [stdout] 131 +         assert!(pat.in_target_area());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.18s
[INFO] running `Command { std: "docker" "inspect" "b57714c5c5ef7554920c20eb0cf3968c4f71e8929270e1acf28274b020a9ec01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b57714c5c5ef7554920c20eb0cf3968c4f71e8929270e1acf28274b020a9ec01", kill_on_drop: false }`
[INFO] [stdout] b57714c5c5ef7554920c20eb0cf3968c4f71e8929270e1acf28274b020a9ec01