[INFO] crate initials 0.1.2 is already in cache
[INFO] extracting crate initials 0.1.2 into work/ex/clippy-test-run/sources/stable/reg/initials/0.1.2
[INFO] extracting crate initials 0.1.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/initials/0.1.2
[INFO] validating manifest of initials-0.1.2 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 initials-0.1.2 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 initials-0.1.2
[INFO] finished frobbing initials-0.1.2
[INFO] frobbed toml for initials-0.1.2 written to work/ex/clippy-test-run/sources/stable/reg/initials/0.1.2/Cargo.toml
[INFO] started frobbing initials-0.1.2
[INFO] finished frobbing initials-0.1.2
[INFO] frobbed toml for initials-0.1.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/initials/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 initials-0.1.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/initials/0.1.2:/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] 6d2386fdc299cc2fc3540715a7b403e5bdbab92a10eca050d1c5b84f4b0f0fa2
[INFO] running `"docker" "start" "-a" "6d2386fdc299cc2fc3540715a7b403e5bdbab92a10eca050d1c5b84f4b0f0fa2"`
[INFO] [stderr]     Checking rusttype v0.6.5
[INFO] [stderr]     Checking initials v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]  --> src/hex.rs:8:29
[INFO] [stderr]   |
[INFO] [stderr] 8 |     if !hex_str.starts_with("#") {
[INFO] [stderr]   |                             ^^^ help: try using a char instead: `'#'`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/hex.rs:11:21
[INFO] [stderr]    |
[INFO] [stderr] 11 |             actual: String::from(format!("Color hex starts with `{}`", hex_str.chars().next().unwrap()))
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `format!("Color hex starts with `{}`", hex_str.chars().next().unwrap())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/hex.rs:17:21
[INFO] [stderr]    |
[INFO] [stderr] 17 |             actual: String::from(format!("Hex code is `{}` characters long!", hex_str.len()))
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `format!("Hex code is `{}` characters long!", hex_str.len())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/contrast.rs:2:29
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn calculate_luminance(rgb: &Vec<i64>) -> f32 {
[INFO] [stderr]   |                             ^^^^^^^^^ help: change this to: `&[i64]`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/contrast.rs:6:29
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn find_ratio(font_rgb: &Vec<i64>, background_rgb: &Vec<i64>) -> f32 {
[INFO] [stderr]   |                             ^^^^^^^^^ help: change this to: `&[i64]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/contrast.rs:6:56
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn find_ratio(font_rgb: &Vec<i64>, background_rgb: &Vec<i64>) -> f32 {
[INFO] [stderr]   |                                                        ^^^^^^^^^ help: change this to: `&[i64]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/avatar.rs:175:26
[INFO] [stderr]     |
[INFO] [stderr] 175 |         let mut colors = self.randomized_colors.clone();
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `self.randomized_colors`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]  --> src/hex.rs:8:29
[INFO] [stderr]   |
[INFO] [stderr] 8 |     if !hex_str.starts_with("#") {
[INFO] [stderr]   |                             ^^^ help: try using a char instead: `'#'`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/hex.rs:11:21
[INFO] [stderr]    |
[INFO] [stderr] 11 |             actual: String::from(format!("Color hex starts with `{}`", hex_str.chars().next().unwrap()))
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `format!("Color hex starts with `{}`", hex_str.chars().next().unwrap())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/hex.rs:17:21
[INFO] [stderr]    |
[INFO] [stderr] 17 |             actual: String::from(format!("Hex code is `{}` characters long!", hex_str.len()))
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `format!("Hex code is `{}` characters long!", hex_str.len())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/contrast.rs:2:29
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn calculate_luminance(rgb: &Vec<i64>) -> f32 {
[INFO] [stderr]   |                             ^^^^^^^^^ help: change this to: `&[i64]`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/contrast.rs:6:29
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn find_ratio(font_rgb: &Vec<i64>, background_rgb: &Vec<i64>) -> f32 {
[INFO] [stderr]   |                             ^^^^^^^^^ help: change this to: `&[i64]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/contrast.rs:6:56
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn find_ratio(font_rgb: &Vec<i64>, background_rgb: &Vec<i64>) -> f32 {
[INFO] [stderr]   |                                                        ^^^^^^^^^ help: change this to: `&[i64]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]   --> src/contrast.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         assert_eq!(find_ratio(&rgb_white, &rgb_yellow).floor(), 1.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::float_cmp)] on by default
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> src/contrast.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         assert_eq!(find_ratio(&rgb_white, &rgb_yellow).floor(), 1.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]   --> src/contrast.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         assert_eq!(find_ratio(&rgb_white, &rgb_blue).floor(), 8.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> src/contrast.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         assert_eq!(find_ratio(&rgb_white, &rgb_blue).floor(), 8.);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/avatar.rs:175:26
[INFO] [stderr]     |
[INFO] [stderr] 175 |         let mut colors = self.randomized_colors.clone();
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `self.randomized_colors`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `initials`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "6d2386fdc299cc2fc3540715a7b403e5bdbab92a10eca050d1c5b84f4b0f0fa2"`
[INFO] running `"docker" "rm" "-f" "6d2386fdc299cc2fc3540715a7b403e5bdbab92a10eca050d1c5b84f4b0f0fa2"`
[INFO] [stdout] 6d2386fdc299cc2fc3540715a7b403e5bdbab92a10eca050d1c5b84f4b0f0fa2