[INFO] cloning repository https://github.com/Narsil/euleur-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Narsil/euleur-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNarsil%2Feuleur-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNarsil%2Feuleur-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b17845906d1074ccb473aacc8fa715cc8ceb110d
[INFO] linting Narsil/euleur-rust against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNarsil%2Feuleur-rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Narsil/euleur-rust
[INFO] finished tweaking git repo https://github.com/Narsil/euleur-rust
[INFO] tweaked toml for git repo https://github.com/Narsil/euleur-rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Narsil/euleur-rust 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/Narsil/euleur-rust 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]  Downloading crates ...
[INFO] [stderr]   Downloaded bytecount v0.6.0
[INFO] [stderr]   Downloaded hermit-abi v0.1.12
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 }`
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[INFO] running `Command { std: "docker" "inspect" "2a2ce96f7cd96442182d253c3feca67a5dacc2c13d3c85a7db2421f947effb32", kill_on_drop: false }`
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[INFO] [stdout] 62fef9c574f91b20f588805936c7c3b518306120d766dc02585dd187f68266c6
[INFO] running `Command { std: "docker" "start" "-a" "62fef9c574f91b20f588805936c7c3b518306120d766dc02585dd187f68266c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]     Checking euler-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this is a decimal constant
[INFO] [stdout]    --> src/fifty_sixty.rs:706:39
[INFO] [stdout]     |
[INFO] [stdout] 706 |         assert_eq!(p.next(), Some((2, 011_000)));
[INFO] [stdout]     |                                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stdout]     = note: `#[warn(clippy::zero_prefixed_literal)]` on by default
[INFO] [stdout] help: if you mean to use a decimal constant, remove the `0` to avoid confusion
[INFO] [stdout]     |
[INFO] [stdout] 706 -         assert_eq!(p.next(), Some((2, 011_000)));
[INFO] [stdout] 706 +         assert_eq!(p.next(), Some((2, 11_000)));
[INFO] [stdout]     |
[INFO] [stdout] help: if you mean to use an octal constant, use `0o`
[INFO] [stdout]     |
[INFO] [stdout] 706 |         assert_eq!(p.next(), Some((2, 0o11_000)));
[INFO] [stdout]     |                                        +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this is a decimal constant
[INFO] [stdout]    --> src/fifty_sixty.rs:708:39
[INFO] [stdout]     |
[INFO] [stdout] 708 |         assert_eq!(p.next(), Some((0, 000_011)));
[INFO] [stdout]     |                                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zero_prefixed_literal
[INFO] [stdout] help: if you mean to use a decimal constant, remove the `0` to avoid confusion
[INFO] [stdout]     |
[INFO] [stdout] 708 -         assert_eq!(p.next(), Some((0, 000_011)));
[INFO] [stdout] 708 +         assert_eq!(p.next(), Some((0, 11)));
[INFO] [stdout]     |
[INFO] [stdout] help: if you mean to use an octal constant, use `0o`
[INFO] [stdout]     |
[INFO] [stdout] 708 -         assert_eq!(p.next(), Some((0, 000_011)));
[INFO] [stdout] 708 +         assert_eq!(p.next(), Some((0, 0o11)));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/forty_fifty.rs:45:66
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let pan_number = from_digits(&permutation.iter().map(|i| (8 - i)).collect::<Vec<_>>()[..]);
[INFO] [stdout]    |                                                                  ^     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 45 -         let pan_number = from_digits(&permutation.iter().map(|i| (8 - i)).collect::<Vec<_>>()[..]);
[INFO] [stdout] 45 +         let pan_number = from_digits(&permutation.iter().map(|i| 8 - i ).collect::<Vec<_>>()[..]);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/thirty_forty.rs:248:49
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let digits = permutation.iter().map(|i| (10 - i)).collect::<Vec<_>>();
[INFO] [stdout]     |                                                 ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 248 -         let digits = permutation.iter().map(|i| (10 - i)).collect::<Vec<_>>();
[INFO] [stdout] 248 +         let digits = permutation.iter().map(|i| 10 - i ).collect::<Vec<_>>();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/forty_fifty.rs:45:66
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let pan_number = from_digits(&permutation.iter().map(|i| (8 - i)).collect::<Vec<_>>()[..]);
[INFO] [stdout]    |                                                                  ^     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 45 -         let pan_number = from_digits(&permutation.iter().map(|i| (8 - i)).collect::<Vec<_>>()[..]);
[INFO] [stdout] 45 +         let pan_number = from_digits(&permutation.iter().map(|i| 8 - i ).collect::<Vec<_>>()[..]);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/thirty_forty.rs:248:49
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let digits = permutation.iter().map(|i| (10 - i)).collect::<Vec<_>>();
[INFO] [stdout]     |                                                 ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 248 -         let digits = permutation.iter().map(|i| (10 - i)).collect::<Vec<_>>();
[INFO] [stdout] 248 +         let digits = permutation.iter().map(|i| 10 - i ).collect::<Vec<_>>();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/arithmetic.rs:12:22
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if n > *a && n % a == 0 {
[INFO] [stdout]    |                      ^^^^^^^^^^ help: replace with: `n.is_multiple_of(*a)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]    = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/arithmetic.rs:73:15
[INFO] [stdout]    |
[INFO] [stdout] 73 |         while number % prime == 0 {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^ help: replace with: `number.is_multiple_of(*prime)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `reserve` immediately after creation
[INFO] [stdout]    --> src/eleven_twenty.rs:195:5
[INFO] [stdout]     |
[INFO] [stdout] 195 | /     let mut result = vec![];
[INFO] [stdout] 196 | |     result.reserve(100);
[INFO] [stdout]     | |________________________^ help: consider using `Vec::with_capacity(/* Space hint */)`: `let mut result = Vec::with_capacity(100);`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#reserve_after_initialization
[INFO] [stdout]     = note: `#[warn(clippy::reserve_after_initialization)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/eleven_twenty.rs:229:12
[INFO] [stdout]     |
[INFO] [stdout] 229 |         if i % 2 == 0 {
[INFO] [stdout]     |            ^^^^^^^^^^ help: replace with: `i.is_multiple_of(2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/eleven_twenty.rs:426:8
[INFO] [stdout]     |
[INFO] [stdout] 426 |     if year % 400 == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^ help: replace with: `year.is_multiple_of(400)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/eleven_twenty.rs:428:15
[INFO] [stdout]     |
[INFO] [stdout] 428 |     } else if year % 100 == 0 {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^ help: replace with: `year.is_multiple_of(100)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/eleven_twenty.rs:430:15
[INFO] [stdout]     |
[INFO] [stdout] 430 |     } else if year % 4 == 0 {
[INFO] [stdout]     |               ^^^^^^^^^^^^^ help: replace with: `year.is_multiple_of(4)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`u64` -> `u64`)
[INFO] [stdout]   --> src/fifty_sixty.rs:35:23
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 sum + 10u64.pow((*i).try_into().unwrap()) as u64
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `10u64.pow((*i).try_into().unwrap())`
[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: useless conversion to the same type: `usize`
[INFO] [stdout]   --> src/fifty_sixty.rs:73:26
[INFO] [stdout]    |
[INFO] [stdout] 73 |         if self.take_n > n_digits.try_into().unwrap() {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: binary comparison to literal `Option::None`
[INFO] [stdout]   --> src/fifty_sixty.rs:92:23
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 while r == None {
[INFO] [stdout]    |                       ^^^^^^^^^ help: use `Option::is_none()` instead: `r.is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout]    = note: `#[warn(clippy::partialeq_to_none)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&pp).is_none()`
[INFO] [stdout]    --> src/fifty_sixty.rs:151:45
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 if pp > max_p || primes_set.get(&pp).is_none() {
[INFO] [stdout]     |                                  -----------^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  help: replace it with: `!primes_set.contains(&pp)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_get_then_check)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-canonical implementation of `partial_cmp` on an `Ord` type
[INFO] [stdout]    --> src/fifty_sixty.rs:288:1
[INFO] [stdout]     |
[INFO] [stdout] 288 | / impl PartialOrd for Card {
[INFO] [stdout] 289 | |     fn partial_cmp(&self, other: &Card) -> Option<Ordering> {
[INFO] [stdout] 290 | |         self.value.partial_cmp(&other.value)
[INFO] [stdout] 291 | |     }
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#non_canonical_partial_ord_impl
[INFO] [stdout]     = note: `#[warn(clippy::non_canonical_partial_ord_impl)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 289 -     fn partial_cmp(&self, other: &Card) -> Option<Ordering> {
[INFO] [stdout] 290 -         self.value.partial_cmp(&other.value)
[INFO] [stdout] 291 -     }
[INFO] [stdout] 289 +     fn partial_cmp(&self, other: &Card) -> Option<Ordering> { Some(self.cmp(other)) }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&number).is_some()`
[INFO] [stdout]    --> src/fifty_sixty.rs:529:27
[INFO] [stdout]     |
[INFO] [stdout] 529 |             if primes_set.get(&number).is_some()
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&number)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `reserve` immediately after creation
[INFO] [stdout]    --> src/fifty_sixty.rs:546:5
[INFO] [stdout]     |
[INFO] [stdout] 546 | /     let mut v = vec![];
[INFO] [stdout] 547 | |     v.reserve(string.len());
[INFO] [stdout]     | |____________________________^ help: consider using `Vec::with_capacity(/* Space hint */)`: `let mut v = Vec::with_capacity(string.len());`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#reserve_after_initialization
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: accessing first element with `chunk.get(0)`
[INFO] [stdout]    --> src/fifty_sixty.rs:551:26
[INFO] [stdout]     |
[INFO] [stdout] 551 |         if let Some(x) = chunk.get(0) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^ help: try: `chunk.first()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first
[INFO] [stdout]     = note: `#[warn(clippy::get_first)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&n).is_none()`
[INFO] [stdout]    --> src/fifty_sixty.rs:624:31
[INFO] [stdout]     |
[INFO] [stdout] 624 |                 if primes_set.get(&n).is_none() {
[INFO] [stdout]     |                    -----------^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    help: replace it with: `!primes_set.contains(&n)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&n).is_none()`
[INFO] [stdout]    --> src/fifty_sixty.rs:633:31
[INFO] [stdout]     |
[INFO] [stdout] 633 |                 if primes_set.get(&n).is_none() {
[INFO] [stdout]     |                    -----------^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    help: replace it with: `!primes_set.contains(&n)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/arithmetic.rs:12:22
[INFO] [stdout]    |
[INFO] [stdout] 12 |         if n > *a && n % a == 0 {
[INFO] [stdout]    |                      ^^^^^^^^^^ help: replace with: `n.is_multiple_of(*a)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]    = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/arithmetic.rs:73:15
[INFO] [stdout]    |
[INFO] [stdout] 73 |         while number % prime == 0 {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^ help: replace with: `number.is_multiple_of(*prime)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/fifty_sixty.rs:810:17
[INFO] [stdout]     |
[INFO] [stdout] 810 |         assert!(cards < cards2 && cards2 > cards);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `cards < cards2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/fifty_sixty.rs:824:17
[INFO] [stdout]     |
[INFO] [stdout] 824 |         assert!(cards < cards2 && cards2 > cards);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `cards < cards2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]   --> src/forty_fifty.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |         HashSet::from_iter(crate::arithmetic::small_primes(10_000_000).into_iter());
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]   --> /rustc/3645249d79dfb136b5d8de3ce153d19d6698d92d/library/core/src/iter/traits/collect.rs:152:20
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] help: consider removing the `.into_iter()`
[INFO] [stdout]    |
[INFO] [stdout] 16 -         HashSet::from_iter(crate::arithmetic::small_primes(10_000_000).into_iter());
[INFO] [stdout] 16 +         HashSet::from_iter(crate::arithmetic::small_primes(10_000_000));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&pan_number).is_some()`
[INFO] [stdout]   --> src/forty_fifty.rs:46:19
[INFO] [stdout]    |
[INFO] [stdout] 46 |         if primes.get(&pan_number).is_some() {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&pan_number)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&s).is_some()`
[INFO] [stdout]   --> src/forty_fifty.rs:59:38
[INFO] [stdout]    |
[INFO] [stdout] 59 |         .filter(|s| triangle_numbers.get(&s).is_some())
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&s)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/forty_fifty.rs:59:42
[INFO] [stdout]    |
[INFO] [stdout] 59 |         .filter(|s| triangle_numbers.get(&s).is_some())
[INFO] [stdout]    |                                          ^^ help: change this to: `s`
[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: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 |         if from_digits(&permutation[7..]) % 17 == 0
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[7..]).is_multiple_of(17)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `reserve` immediately after creation
[INFO] [stdout]    --> src/eleven_twenty.rs:195:5
[INFO] [stdout]     |
[INFO] [stdout] 195 | /     let mut result = vec![];
[INFO] [stdout] 196 | |     result.reserve(100);
[INFO] [stdout]     | |________________________^ help: consider using `Vec::with_capacity(/* Space hint */)`: `let mut result = Vec::with_capacity(100);`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#reserve_after_initialization
[INFO] [stdout]     = note: `#[warn(clippy::reserve_after_initialization)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 |             && from_digits(&permutation[6..=8]) % 13 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[6..=8]).is_multiple_of(13)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:70:16
[INFO] [stdout]    |
[INFO] [stdout] 70 |             && from_digits(&permutation[5..=7]) % 11 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[5..=7]).is_multiple_of(11)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:71:16
[INFO] [stdout]    |
[INFO] [stdout] 71 |             && from_digits(&permutation[4..=6]) % 7 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[4..=6]).is_multiple_of(7)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 72 |             && from_digits(&permutation[3..=5]) % 5 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[3..=5]).is_multiple_of(5)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:73:16
[INFO] [stdout]    |
[INFO] [stdout] 73 |             && from_digits(&permutation[2..=4]) % 3 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[2..=4]).is_multiple_of(3)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:74:16
[INFO] [stdout]    |
[INFO] [stdout] 74 |             && from_digits(&permutation[1..=3]) % 2 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[1..=3]).is_multiple_of(2)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/eleven_twenty.rs:229:12
[INFO] [stdout]     |
[INFO] [stdout] 229 |         if i % 2 == 0 {
[INFO] [stdout]     |            ^^^^^^^^^^ help: replace with: `i.is_multiple_of(2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&diff).is_some()`
[INFO] [stdout]   --> src/forty_fifty.rs:89:32
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 if pentagonals.get(&diff).is_some() {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&diff)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&i.try_into().unwrap()).is_some()`
[INFO] [stdout]    --> src/forty_fifty.rs:170:23
[INFO] [stdout]     |
[INFO] [stdout] 170 |         if primes_set.get(&i.try_into().unwrap()).is_some() {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&i.try_into().unwrap())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/forty_fifty.rs:191:15
[INFO] [stdout]     |
[INFO] [stdout] 191 |     } else if power % 2 == 0 {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^ help: replace with: `power.is_multiple_of(2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression borrows a value the compiler would automatically borrow
[INFO] [stdout]    --> src/forty_fifty.rs:213:20
[INFO] [stdout]     |
[INFO] [stdout] 213 |     for (i, p1) in (&primes).iter().enumerate() {
[INFO] [stdout]     |                    ^^^^^^^^^ help: change this to: `primes`
[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: unnecessary use of `get(&p3).is_none()`
[INFO] [stdout]    --> src/forty_fifty.rs:229:27
[INFO] [stdout]     |
[INFO] [stdout] 229 |             if primes_set.get(&p3).is_none() {
[INFO] [stdout]     |                -----------^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: replace it with: `!primes_set.contains(&p3)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/eleven_twenty.rs:426:8
[INFO] [stdout]     |
[INFO] [stdout] 426 |     if year % 400 == 0 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^ help: replace with: `year.is_multiple_of(400)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/eleven_twenty.rs:428:15
[INFO] [stdout]     |
[INFO] [stdout] 428 |     } else if year % 100 == 0 {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^ help: replace with: `year.is_multiple_of(100)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/eleven_twenty.rs:430:15
[INFO] [stdout]     |
[INFO] [stdout] 430 |     } else if year % 4 == 0 {
[INFO] [stdout]     |               ^^^^^^^^^^^^^ help: replace with: `year.is_multiple_of(4)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&sum2).is_some()`
[INFO] [stdout]    --> src/forty_fifty.rs:266:27
[INFO] [stdout]     |
[INFO] [stdout] 266 |             if primes_set.get(&sum2).is_some() && len > max_len {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&sum2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/one_ten.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |         if tmp % a == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^ help: replace with: `tmp.is_multiple_of(a)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`u64` -> `u64`)
[INFO] [stdout]   --> src/fifty_sixty.rs:35:23
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 sum + 10u64.pow((*i).try_into().unwrap()) as u64
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `10u64.pow((*i).try_into().unwrap())`
[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: useless conversion to the same type: `usize`
[INFO] [stdout]   --> src/fifty_sixty.rs:73:26
[INFO] [stdout]    |
[INFO] [stdout] 73 |         if self.take_n > n_digits.try_into().unwrap() {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: binary comparison to literal `Option::None`
[INFO] [stdout]   --> src/fifty_sixty.rs:92:23
[INFO] [stdout]    |
[INFO] [stdout] 92 |                 while r == None {
[INFO] [stdout]    |                       ^^^^^^^^^ help: use `Option::is_none()` instead: `r.is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout]    = note: `#[warn(clippy::partialeq_to_none)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`u64` -> `u64`)
[INFO] [stdout]   --> src/one_ten.rs:91:19
[INFO] [stdout]    |
[INFO] [stdout] 91 |         sum_of += (i as u64).pow(2);
[INFO] [stdout]    |                   ^^^^^^^^^^ help: try: `i`
[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: unnecessary use of `get(&pp).is_none()`
[INFO] [stdout]    --> src/fifty_sixty.rs:151:45
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 if pp > max_p || primes_set.get(&pp).is_none() {
[INFO] [stdout]     |                                  -----------^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  help: replace it with: `!primes_set.contains(&pp)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_get_then_check)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`u64` -> `u64`)
[INFO] [stdout]    --> src/one_ten.rs:123:22
[INFO] [stdout]     |
[INFO] [stdout] 123 |             let c2 = (a as u64).pow(2) + (b as u64).pow(2);
[INFO] [stdout]     |                      ^^^^^^^^^^ help: try: `a`
[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 (`u64` -> `u64`)
[INFO] [stdout]    --> src/one_ten.rs:123:42
[INFO] [stdout]     |
[INFO] [stdout] 123 |             let c2 = (a as u64).pow(2) + (b as u64).pow(2);
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: try: `b`
[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: length comparison to zero
[INFO] [stdout]   --> src/sixty_seventy.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     if rest_indices.len() == 0 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rest_indices.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/sixty_seventy.rs:23:43
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let numberals_index = indexes.get(&index).unwrap();
[INFO] [stdout]    |                                           ^^^^^^ help: change this to: `index`
[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: called `iter().cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable
[INFO] [stdout]   --> src/sixty_seventy.rs:26:51
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 let mut subvalues: Vec<_> = values.iter().cloned().collect();
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.to_vec()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_cloned_collect
[INFO] [stdout]    = note: `#[warn(clippy::iter_cloned_collect)]` 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/sixty_seventy.rs:33:48
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 look(&subvalues, &new_indices, &indexes);
[INFO] [stdout]    |                                                ^^^^^^^^ help: change this to: `indexes`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]   --> src/sixty_seventy.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]   --> src/sixty_seventy.rs:60:24
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]   --> src/sixty_seventy.rs:74:24
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: non-canonical implementation of `partial_cmp` on an `Ord` type
[INFO] [stdout]    --> src/fifty_sixty.rs:288:1
[INFO] [stdout]     |
[INFO] [stdout] 288 | / impl PartialOrd for Card {
[INFO] [stdout] 289 | |     fn partial_cmp(&self, other: &Card) -> Option<Ordering> {
[INFO] [stdout] 290 | |         self.value.partial_cmp(&other.value)
[INFO] [stdout] 291 | |     }
[INFO] [stdout] 292 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#non_canonical_partial_ord_impl
[INFO] [stdout]     = note: `#[warn(clippy::non_canonical_partial_ord_impl)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 289 -     fn partial_cmp(&self, other: &Card) -> Option<Ordering> {
[INFO] [stdout] 290 -         self.value.partial_cmp(&other.value)
[INFO] [stdout] 291 -     }
[INFO] [stdout] 289 +     fn partial_cmp(&self, other: &Card) -> Option<Ordering> { Some(self.cmp(other)) }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `u64`
[INFO] [stdout]   --> src/sixty_seventy.rs:88:24
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]    --> src/sixty_seventy.rs:102:24
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]    --> src/sixty_seventy.rs:116:24
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[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: you seem to want to iterate on a map's values
[INFO] [stdout]    --> src/sixty_seventy.rs:133:28
[INFO] [stdout]     |
[INFO] [stdout] 133 |     for (_, octogonals) in &octogonal_index {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stdout]     = note: `#[warn(clippy::for_kv_map)]` on by default
[INFO] [stdout] help: use the corresponding method
[INFO] [stdout]     |
[INFO] [stdout] 133 -     for (_, octogonals) in &octogonal_index {
[INFO] [stdout] 133 +     for octogonals in octogonal_index.values() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/sixty_seventy.rs:244:12
[INFO] [stdout]     |
[INFO] [stdout] 244 |         if period % 2 != 0 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ help: replace with: `!period.is_multiple_of(2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/sixty_seventy.rs:265:5
[INFO] [stdout]     |
[INFO] [stdout] 265 |     return (last_d.unwrap_or(n.clone()), n);
[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] 265 -     return (last_d.unwrap_or(n.clone()), n);
[INFO] [stdout] 265 +     (last_d.unwrap_or(n.clone()), n)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&i).is_some()`
[INFO] [stdout]    --> src/sixty_seventy.rs:316:20
[INFO] [stdout]     |
[INFO] [stdout] 316 |         if squares.get(&i).is_some() {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&i)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&number).is_some()`
[INFO] [stdout]    --> src/fifty_sixty.rs:529:27
[INFO] [stdout]     |
[INFO] [stdout] 529 |             if primes_set.get(&number).is_some()
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&number)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `reserve` immediately after creation
[INFO] [stdout]    --> src/fifty_sixty.rs:546:5
[INFO] [stdout]     |
[INFO] [stdout] 546 | /     let mut v = vec![];
[INFO] [stdout] 547 | |     v.reserve(string.len());
[INFO] [stdout]     | |____________________________^ help: consider using `Vec::with_capacity(/* Space hint */)`: `let mut v = Vec::with_capacity(string.len());`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#reserve_after_initialization
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: accessing first element with `chunk.get(0)`
[INFO] [stdout]    --> src/fifty_sixty.rs:551:26
[INFO] [stdout]     |
[INFO] [stdout] 551 |         if let Some(x) = chunk.get(0) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^ help: try: `chunk.first()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_first
[INFO] [stdout]     = note: `#[warn(clippy::get_first)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&n).is_none()`
[INFO] [stdout]    --> src/fifty_sixty.rs:624:31
[INFO] [stdout]     |
[INFO] [stdout] 624 |                 if primes_set.get(&n).is_none() {
[INFO] [stdout]     |                    -----------^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    help: replace it with: `!primes_set.contains(&n)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&n).is_none()`
[INFO] [stdout]    --> src/fifty_sixty.rs:633:31
[INFO] [stdout]     |
[INFO] [stdout] 633 |                 if primes_set.get(&n).is_none() {
[INFO] [stdout]     |                    -----------^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    help: replace it with: `!primes_set.contains(&n)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]    --> src/sixty_seventy.rs:413:26
[INFO] [stdout]     |
[INFO] [stdout] 413 |                           .map(|n| if *n < 10 { vec![*n] } else { vec![1, 0] })
[INFO] [stdout]     |  __________________________^
[INFO] [stdout] 414 | |                         .flatten()
[INFO] [stdout]     | |__________________________________^ help: try replacing `map` with `flat_map` and remove the `.flatten()`: `flat_map(|n| if *n < 10 { vec![*n] } else { vec![1, 0] })`
[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: the loop variable `i` is used to index `phi`
[INFO] [stdout]    --> src/sixty_seventy.rs:429:14
[INFO] [stdout]     |
[INFO] [stdout] 429 |     for i in 1..LIMIT {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]     = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 429 -     for i in 1..LIMIT {
[INFO] [stdout] 429 +     for (i, <item>) in phi.iter_mut().enumerate().take(LIMIT).skip(1) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]   --> src/forty_fifty.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 |         HashSet::from_iter(crate::arithmetic::small_primes(10_000_000).into_iter());
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]   --> /rustc/3645249d79dfb136b5d8de3ce153d19d6698d92d/library/core/src/iter/traits/collect.rs:152:20
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] help: consider removing the `.into_iter()`
[INFO] [stdout]    |
[INFO] [stdout] 16 -         HashSet::from_iter(crate::arithmetic::small_primes(10_000_000).into_iter());
[INFO] [stdout] 16 +         HashSet::from_iter(crate::arithmetic::small_primes(10_000_000));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&pan_number).is_some()`
[INFO] [stdout]   --> src/forty_fifty.rs:46:19
[INFO] [stdout]    |
[INFO] [stdout] 46 |         if primes.get(&pan_number).is_some() {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&pan_number)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `phi`
[INFO] [stdout]    --> src/sixty_seventy.rs:452:14
[INFO] [stdout]     |
[INFO] [stdout] 452 |     for i in 1..LIMIT {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 452 -     for i in 1..LIMIT {
[INFO] [stdout] 452 +     for (i, <item>) in phi.iter_mut().enumerate().take(LIMIT).skip(1) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&s).is_some()`
[INFO] [stdout]   --> src/forty_fifty.rs:59:38
[INFO] [stdout]    |
[INFO] [stdout] 59 |         .filter(|s| triangle_numbers.get(&s).is_some())
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&s)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/forty_fifty.rs:59:42
[INFO] [stdout]    |
[INFO] [stdout] 59 |         .filter(|s| triangle_numbers.get(&s).is_some())
[INFO] [stdout]    |                                          ^^ help: change this to: `s`
[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: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 |         if from_digits(&permutation[7..]) % 17 == 0
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[7..]).is_multiple_of(17)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 |             && from_digits(&permutation[6..=8]) % 13 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[6..=8]).is_multiple_of(13)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:70:16
[INFO] [stdout]    |
[INFO] [stdout] 70 |             && from_digits(&permutation[5..=7]) % 11 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[5..=7]).is_multiple_of(11)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:71:16
[INFO] [stdout]    |
[INFO] [stdout] 71 |             && from_digits(&permutation[4..=6]) % 7 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[4..=6]).is_multiple_of(7)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 72 |             && from_digits(&permutation[3..=5]) % 5 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[3..=5]).is_multiple_of(5)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:73:16
[INFO] [stdout]    |
[INFO] [stdout] 73 |             && from_digits(&permutation[2..=4]) % 3 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[2..=4]).is_multiple_of(3)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/forty_fifty.rs:74:16
[INFO] [stdout]    |
[INFO] [stdout] 74 |             && from_digits(&permutation[1..=3]) % 2 == 0
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `from_digits(&permutation[1..=3]).is_multiple_of(2)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `reserve` immediately after creation
[INFO] [stdout]    --> src/thirty_forty.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     let mut fractions: Vec<(u32, u32)> = vec![];
[INFO] [stdout] 111 | |     fractions.reserve(4);
[INFO] [stdout]     | |_________________________^ help: consider using `Vec::with_capacity(/* Space hint */)`: `let mut fractions: Vec<(u32, u32)> = Vec::with_capacity(4);`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#reserve_after_initialization
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&diff).is_some()`
[INFO] [stdout]   --> src/forty_fifty.rs:89:32
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 if pentagonals.get(&diff).is_some() {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&diff)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]    --> src/thirty_forty.rs:169:28
[INFO] [stdout]     |
[INFO] [stdout] 169 |         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000).into_iter());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]    --> /rustc/3645249d79dfb136b5d8de3ce153d19d6698d92d/library/core/src/iter/traits/collect.rs:152:20
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] help: consider removing the `.into_iter()`
[INFO] [stdout]     |
[INFO] [stdout] 169 -         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000).into_iter());
[INFO] [stdout] 169 +         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&i.try_into().unwrap()).is_some()`
[INFO] [stdout]    --> src/forty_fifty.rs:170:23
[INFO] [stdout]     |
[INFO] [stdout] 170 |         if primes_set.get(&i.try_into().unwrap()).is_some() {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&i.try_into().unwrap())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&number).is_none()`
[INFO] [stdout]    --> src/thirty_forty.rs:177:23
[INFO] [stdout]     |
[INFO] [stdout] 177 |             if primes.get(&number).is_none() {
[INFO] [stdout]     |                -------^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: replace it with: `!primes.contains(&number)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/forty_fifty.rs:191:15
[INFO] [stdout]     |
[INFO] [stdout] 191 |     } else if power % 2 == 0 {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^ help: replace with: `power.is_multiple_of(2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]    --> src/thirty_forty.rs:217:28
[INFO] [stdout]     |
[INFO] [stdout] 217 |         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000).into_iter());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]    --> /rustc/3645249d79dfb136b5d8de3ce153d19d6698d92d/library/core/src/iter/traits/collect.rs:152:20
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] help: consider removing the `.into_iter()`
[INFO] [stdout]     |
[INFO] [stdout] 217 -         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000).into_iter());
[INFO] [stdout] 217 +         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `u64`
[INFO] [stdout]    --> src/thirty_forty.rs:220:27
[INFO] [stdout]     |
[INFO] [stdout] 220 |         let digs = digits((*p).try_into().unwrap()).in_order();
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[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: this expression borrows a value the compiler would automatically borrow
[INFO] [stdout]    --> src/forty_fifty.rs:213:20
[INFO] [stdout]     |
[INFO] [stdout] 213 |     for (i, p1) in (&primes).iter().enumerate() {
[INFO] [stdout]     |                    ^^^^^^^^^ help: change this to: `primes`
[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: unnecessary use of `get(&from_digits(&digs[0..i])).is_none()`
[INFO] [stdout]    --> src/thirty_forty.rs:226:23
[INFO] [stdout]     |
[INFO] [stdout] 226 |             if primes.get(&from_digits(&digs[0..i])).is_none() {
[INFO] [stdout]     |                -------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: replace it with: `!primes.contains(&from_digits(&digs[0..i]))`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&from_digits(&digs[i..])).is_none()`
[INFO] [stdout]    --> src/thirty_forty.rs:231:23
[INFO] [stdout]     |
[INFO] [stdout] 231 |             if primes.get(&from_digits(&digs[i..])).is_none() {
[INFO] [stdout]     |                -------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: replace it with: `!primes.contains(&from_digits(&digs[i..]))`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&p3).is_none()`
[INFO] [stdout]    --> src/forty_fifty.rs:229:27
[INFO] [stdout]     |
[INFO] [stdout] 229 |             if primes_set.get(&p3).is_none() {
[INFO] [stdout]     |                -----------^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: replace it with: `!primes_set.contains(&p3)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&sum2).is_some()`
[INFO] [stdout]    --> src/forty_fifty.rs:266:27
[INFO] [stdout]     |
[INFO] [stdout] 266 |             if primes_set.get(&sum2).is_some() && len > max_len {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&sum2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/one_ten.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |         if tmp % a == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^ help: replace with: `tmp.is_multiple_of(a)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`u8` -> `u8`)
[INFO] [stdout]    --> src/thirty_forty.rs:301:57
[INFO] [stdout]     |
[INFO] [stdout] 301 |             self.digits = digits(self.n.into()).map(|i| i as u8).collect::<Vec<_>>()
[INFO] [stdout]     |                                                         ^^^^^^^ help: try: `i`
[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 (`u64` -> `u64`)
[INFO] [stdout]   --> src/one_ten.rs:91:19
[INFO] [stdout]    |
[INFO] [stdout] 91 |         sum_of += (i as u64).pow(2);
[INFO] [stdout]    |                   ^^^^^^^^^^ help: try: `i`
[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: call to `reserve` immediately after creation
[INFO] [stdout]   --> src/twenty_thirty.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | /     let mut abundants: Vec<usize> = vec![];
[INFO] [stdout] 55 | |     abundants.reserve(30_000);
[INFO] [stdout]    | |______________________________^ help: consider using `Vec::with_capacity(/* Space hint */)`: `let mut abundants: Vec<usize> = Vec::with_capacity(30_000);`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#reserve_after_initialization
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`u64` -> `u64`)
[INFO] [stdout]    --> src/one_ten.rs:123:22
[INFO] [stdout]     |
[INFO] [stdout] 123 |             let c2 = (a as u64).pow(2) + (b as u64).pow(2);
[INFO] [stdout]     |                      ^^^^^^^^^^ help: try: `a`
[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 (`u64` -> `u64`)
[INFO] [stdout]    --> src/one_ten.rs:123:42
[INFO] [stdout]     |
[INFO] [stdout] 123 |             let c2 = (a as u64).pow(2) + (b as u64).pow(2);
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: try: `b`
[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: length comparison to zero
[INFO] [stdout]   --> src/sixty_seventy.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     if rest_indices.len() == 0 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rest_indices.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/sixty_seventy.rs:23:43
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let numberals_index = indexes.get(&index).unwrap();
[INFO] [stdout]    |                                           ^^^^^^ help: change this to: `index`
[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: called `iter().cloned().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable
[INFO] [stdout]   --> src/sixty_seventy.rs:26:51
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 let mut subvalues: Vec<_> = values.iter().cloned().collect();
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.to_vec()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_cloned_collect
[INFO] [stdout]    = note: `#[warn(clippy::iter_cloned_collect)]` 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/sixty_seventy.rs:33:48
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 look(&subvalues, &new_indices, &indexes);
[INFO] [stdout]    |                                                ^^^^^^^^ help: change this to: `indexes`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]   --> src/sixty_seventy.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]   --> src/sixty_seventy.rs:60:24
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]   --> src/sixty_seventy.rs:74:24
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]   --> src/sixty_seventy.rs:88:24
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `.try_into()`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]    --> src/sixty_seventy.rs:102:24
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[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: useless conversion to the same type: `u64`
[INFO] [stdout]    --> src/sixty_seventy.rs:116:24
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 .entry((t / 100).try_into().unwrap())
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[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: use of a fallible conversion when an infallible one could be used
[INFO] [stdout]    --> src/twenty_thirty.rs:257:54
[INFO] [stdout]     |
[INFO] [stdout] 257 |                 let d: u64 = c.to_digit(10).unwrap().try_into().unwrap();
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: converting `u32` to `u64` cannot fail
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fallible_conversions
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_fallible_conversions)]` on by default
[INFO] [stdout] help: use
[INFO] [stdout]     |
[INFO] [stdout] 257 -                 let d: u64 = c.to_digit(10).unwrap().try_into().unwrap();
[INFO] [stdout] 257 +                 let d: u64 = c.to_digit(10).unwrap().into();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to want to iterate on a map's values
[INFO] [stdout]    --> src/sixty_seventy.rs:133:28
[INFO] [stdout]     |
[INFO] [stdout] 133 |     for (_, octogonals) in &octogonal_index {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stdout]     = note: `#[warn(clippy::for_kv_map)]` on by default
[INFO] [stdout] help: use the corresponding method
[INFO] [stdout]     |
[INFO] [stdout] 133 -     for (_, octogonals) in &octogonal_index {
[INFO] [stdout] 133 +     for octogonals in octogonal_index.values() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]    --> src/sixty_seventy.rs:244:12
[INFO] [stdout]     |
[INFO] [stdout] 244 |         if period % 2 != 0 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ help: replace with: `!period.is_multiple_of(2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/sixty_seventy.rs:265:5
[INFO] [stdout]     |
[INFO] [stdout] 265 |     return (last_d.unwrap_or(n.clone()), n);
[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] 265 -     return (last_d.unwrap_or(n.clone()), n);
[INFO] [stdout] 265 +     (last_d.unwrap_or(n.clone()), n)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&i).is_some()`
[INFO] [stdout]    --> src/sixty_seventy.rs:316:20
[INFO] [stdout]     |
[INFO] [stdout] 316 |         if squares.get(&i).is_some() {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^ help: replace it with: `contains(&i)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]    --> src/sixty_seventy.rs:413:26
[INFO] [stdout]     |
[INFO] [stdout] 413 |                           .map(|n| if *n < 10 { vec![*n] } else { vec![1, 0] })
[INFO] [stdout]     |  __________________________^
[INFO] [stdout] 414 | |                         .flatten()
[INFO] [stdout]     | |__________________________________^ help: try replacing `map` with `flat_map` and remove the `.flatten()`: `flat_map(|n| if *n < 10 { vec![*n] } else { vec![1, 0] })`
[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: the loop variable `i` is used to index `phi`
[INFO] [stdout]    --> src/sixty_seventy.rs:429:14
[INFO] [stdout]     |
[INFO] [stdout] 429 |     for i in 1..LIMIT {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]     = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 429 -     for i in 1..LIMIT {
[INFO] [stdout] 429 +     for (i, <item>) in phi.iter_mut().enumerate().take(LIMIT).skip(1) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `phi`
[INFO] [stdout]    --> src/sixty_seventy.rs:452:14
[INFO] [stdout]     |
[INFO] [stdout] 452 |     for i in 1..LIMIT {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 452 -     for i in 1..LIMIT {
[INFO] [stdout] 452 +     for (i, <item>) in phi.iter_mut().enumerate().take(LIMIT).skip(1) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `reserve` immediately after creation
[INFO] [stdout]    --> src/thirty_forty.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     let mut fractions: Vec<(u32, u32)> = vec![];
[INFO] [stdout] 111 | |     fractions.reserve(4);
[INFO] [stdout]     | |_________________________^ help: consider using `Vec::with_capacity(/* Space hint */)`: `let mut fractions: Vec<(u32, u32)> = Vec::with_capacity(4);`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#reserve_after_initialization
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]    --> src/thirty_forty.rs:169:28
[INFO] [stdout]     |
[INFO] [stdout] 169 |         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000).into_iter());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]    --> /rustc/3645249d79dfb136b5d8de3ce153d19d6698d92d/library/core/src/iter/traits/collect.rs:152:20
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] help: consider removing the `.into_iter()`
[INFO] [stdout]     |
[INFO] [stdout] 169 -         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000).into_iter());
[INFO] [stdout] 169 +         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&number).is_none()`
[INFO] [stdout]    --> src/thirty_forty.rs:177:23
[INFO] [stdout]     |
[INFO] [stdout] 177 |             if primes.get(&number).is_none() {
[INFO] [stdout]     |                -------^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: replace it with: `!primes.contains(&number)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]    --> src/thirty_forty.rs:217:28
[INFO] [stdout]     |
[INFO] [stdout] 217 |         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000).into_iter());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]    --> /rustc/3645249d79dfb136b5d8de3ce153d19d6698d92d/library/core/src/iter/traits/collect.rs:152:20
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] help: consider removing the `.into_iter()`
[INFO] [stdout]     |
[INFO] [stdout] 217 -         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000).into_iter());
[INFO] [stdout] 217 +         HashSet::from_iter(crate::arithmetic::small_primes(1_000_000));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `u64`
[INFO] [stdout]    --> src/thirty_forty.rs:220:27
[INFO] [stdout]     |
[INFO] [stdout] 220 |         let digs = digits((*p).try_into().unwrap()).in_order();
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[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: unnecessary use of `get(&from_digits(&digs[0..i])).is_none()`
[INFO] [stdout]    --> src/thirty_forty.rs:226:23
[INFO] [stdout]     |
[INFO] [stdout] 226 |             if primes.get(&from_digits(&digs[0..i])).is_none() {
[INFO] [stdout]     |                -------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: replace it with: `!primes.contains(&from_digits(&digs[0..i]))`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary use of `get(&from_digits(&digs[i..])).is_none()`
[INFO] [stdout]    --> src/thirty_forty.rs:231:23
[INFO] [stdout]     |
[INFO] [stdout] 231 |             if primes.get(&from_digits(&digs[i..])).is_none() {
[INFO] [stdout]     |                -------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: replace it with: `!primes.contains(&from_digits(&digs[i..]))`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_get_then_check
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`u8` -> `u8`)
[INFO] [stdout]    --> src/thirty_forty.rs:301:57
[INFO] [stdout]     |
[INFO] [stdout] 301 |             self.digits = digits(self.n.into()).map(|i| i as u8).collect::<Vec<_>>()
[INFO] [stdout]     |                                                         ^^^^^^^ help: try: `i`
[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: call to `reserve` immediately after creation
[INFO] [stdout]   --> src/twenty_thirty.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | /     let mut abundants: Vec<usize> = vec![];
[INFO] [stdout] 55 | |     abundants.reserve(30_000);
[INFO] [stdout]    | |______________________________^ help: consider using `Vec::with_capacity(/* Space hint */)`: `let mut abundants: Vec<usize> = Vec::with_capacity(30_000);`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#reserve_after_initialization
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of a fallible conversion when an infallible one could be used
[INFO] [stdout]    --> src/twenty_thirty.rs:257:54
[INFO] [stdout]     |
[INFO] [stdout] 257 |                 let d: u64 = c.to_digit(10).unwrap().try_into().unwrap();
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: converting `u32` to `u64` cannot fail
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fallible_conversions
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_fallible_conversions)]` on by default
[INFO] [stdout] help: use
[INFO] [stdout]     |
[INFO] [stdout] 257 -                 let d: u64 = c.to_digit(10).unwrap().try_into().unwrap();
[INFO] [stdout] 257 +                 let d: u64 = c.to_digit(10).unwrap().into();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.96s
[INFO] running `Command { std: "docker" "inspect" "62fef9c574f91b20f588805936c7c3b518306120d766dc02585dd187f68266c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62fef9c574f91b20f588805936c7c3b518306120d766dc02585dd187f68266c6", kill_on_drop: false }`
[INFO] [stdout] 62fef9c574f91b20f588805936c7c3b518306120d766dc02585dd187f68266c6