[INFO] updating cached repository OptimisticPeach/perlin_noise
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/OptimisticPeach/perlin_noise
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/OptimisticPeach/perlin_noise" "work/ex/clippy-test-run/sources/stable/gh/OptimisticPeach/perlin_noise"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/OptimisticPeach/perlin_noise'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/OptimisticPeach/perlin_noise" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/OptimisticPeach/perlin_noise"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/OptimisticPeach/perlin_noise'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a60c984124e5a3aa37bc47dcdc01bf7ed05f2749
[INFO] sha for GitHub repo OptimisticPeach/perlin_noise: a60c984124e5a3aa37bc47dcdc01bf7ed05f2749
[INFO] validating manifest of OptimisticPeach/perlin_noise on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of OptimisticPeach/perlin_noise on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing OptimisticPeach/perlin_noise
[INFO] finished frobbing OptimisticPeach/perlin_noise
[INFO] frobbed toml for OptimisticPeach/perlin_noise written to work/ex/clippy-test-run/sources/stable/gh/OptimisticPeach/perlin_noise/Cargo.toml
[INFO] started frobbing OptimisticPeach/perlin_noise
[INFO] finished frobbing OptimisticPeach/perlin_noise
[INFO] frobbed toml for OptimisticPeach/perlin_noise written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/OptimisticPeach/perlin_noise/Cargo.toml
[INFO] crate OptimisticPeach/perlin_noise has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting OptimisticPeach/perlin_noise against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/OptimisticPeach/perlin_noise:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 70e72e1299281dc7f335d97b3f689c01b515b01594386bb10575671c1a8073a6
[INFO] running `"docker" "start" "-a" "70e72e1299281dc7f335d97b3f689c01b515b01594386bb10575671c1a8073a6"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.17
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking perlin_noise v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:5:49
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn bilinear(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                 ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:5:57
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn bilinear(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                         ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:9:52
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn circle_lerp(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                    ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:9:60
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn circle_lerp(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                            ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:5:49
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn bilinear(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                 ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:5:57
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn bilinear(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                         ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:9:52
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn circle_lerp(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                    ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:9:60
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn circle_lerp(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                            ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/perlin/interpolators.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     return start + ((end - start) * percent);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `start + ((end - start) * percent)`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/perlin/random_2d.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/perlin/interpolators.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     return start + ((end - start) * percent);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `start + ((end - start) * percent)`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/perlin/random_2d.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `width_main`
[INFO] [stderr]  --> src/perlin/random_2d.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     width_main: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `height_main`
[INFO] [stderr]  --> src/perlin/random_2d.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     height_main: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_accessed`
[INFO] [stderr]   --> src/perlin/random_2d.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn is_accessed(&self, x: usize, y: usize) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `recipr` is used as a loop counter. Consider using `for (recipr, item) in (0..depth).rev().enumerate()` or similar iterators
[INFO] [stderr]   --> src/perlin/mod.rs:39:24
[INFO] [stderr]    |
[INFO] [stderr] 39 |     for depth_index in (0..depth).rev() {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `perlin`.
[INFO] [stderr]   --> src/perlin/mod.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for i in 0..(size - 1) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for <item> in perlin.iter_mut().take((size - 1)) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `perlin`.
[INFO] [stderr]    --> src/perlin/mod.rs:208:14
[INFO] [stderr]     |
[INFO] [stderr] 208 |     for i in 0..(sizex) {
[INFO] [stderr]     |              ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 208 |     for <item> in perlin.iter_mut().take((sizex)) {
[INFO] [stderr]     |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `width_main`
[INFO] [stderr]  --> src/perlin/random_2d.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     width_main: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `height_main`
[INFO] [stderr]  --> src/perlin/random_2d.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     height_main: usize,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_accessed`
[INFO] [stderr]   --> src/perlin/random_2d.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn is_accessed(&self, x: usize, y: usize) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `recipr` is used as a loop counter. Consider using `for (recipr, item) in (0..depth).rev().enumerate()` or similar iterators
[INFO] [stderr]   --> src/perlin/mod.rs:39:24
[INFO] [stderr]    |
[INFO] [stderr] 39 |     for depth_index in (0..depth).rev() {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `perlin`.
[INFO] [stderr]   --> src/perlin/mod.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for i in 0..(size - 1) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for <item> in perlin.iter_mut().take((size - 1)) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `perlin`.
[INFO] [stderr]    --> src/perlin/mod.rs:208:14
[INFO] [stderr]     |
[INFO] [stderr] 208 |     for i in 0..(sizex) {
[INFO] [stderr]     |              ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 208 |     for <item> in perlin.iter_mut().take((sizex)) {
[INFO] [stderr]     |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:5:49
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn bilinear(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                 ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:5:57
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn bilinear(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                         ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:9:52
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn circle_lerp(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                    ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:9:60
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn circle_lerp(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                            ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:5:49
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn bilinear(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                 ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:5:57
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn bilinear(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                         ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:9:52
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn circle_lerp(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                    ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]  --> src/perlin/interpolators.rs:9:60
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn circle_lerp(a: f32, b: f32, c: f32, d: f32, x: f32, y: f32) -> f32 {
[INFO] [stderr]   |                                                            ^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/perlin/interpolators.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     return start + ((end - start) * percent);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `start + ((end - start) * percent)`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `recipr` is used as a loop counter. Consider using `for (recipr, item) in (0..depth).rev().enumerate()` or similar iterators
[INFO] [stderr]   --> src/perlin/mod.rs:39:24
[INFO] [stderr]    |
[INFO] [stderr] 39 |     for depth_index in (0..depth).rev() {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `perlin`.
[INFO] [stderr]   --> src/perlin/mod.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for i in 0..(size - 1) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for <item> in perlin.iter_mut().take((size - 1)) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `perlin`.
[INFO] [stderr]    --> src/perlin/mod.rs:208:14
[INFO] [stderr]     |
[INFO] [stderr] 208 |     for i in 0..(sizex) {
[INFO] [stderr]     |              ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 208 |     for <item> in perlin.iter_mut().take((sizex)) {
[INFO] [stderr]     |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/perlin/interpolators.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     return start + ((end - start) * percent);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `start + ((end - start) * percent)`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `recipr` is used as a loop counter. Consider using `for (recipr, item) in (0..depth).rev().enumerate()` or similar iterators
[INFO] [stderr]   --> src/perlin/mod.rs:39:24
[INFO] [stderr]    |
[INFO] [stderr] 39 |     for depth_index in (0..depth).rev() {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `perlin`.
[INFO] [stderr]   --> src/perlin/mod.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for i in 0..(size - 1) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for <item> in perlin.iter_mut().take((size - 1)) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `perlin`.
[INFO] [stderr]    --> src/perlin/mod.rs:208:14
[INFO] [stderr]     |
[INFO] [stderr] 208 |     for i in 0..(sizex) {
[INFO] [stderr]     |              ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 208 |     for <item> in perlin.iter_mut().take((sizex)) {
[INFO] [stderr]     |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.94s
[INFO] running `"docker" "inspect" "70e72e1299281dc7f335d97b3f689c01b515b01594386bb10575671c1a8073a6"`
[INFO] running `"docker" "rm" "-f" "70e72e1299281dc7f335d97b3f689c01b515b01594386bb10575671c1a8073a6"`
[INFO] [stdout] 70e72e1299281dc7f335d97b3f689c01b515b01594386bb10575671c1a8073a6