[INFO] crate classif 0.0.2 is already in cache
[INFO] extracting crate classif 0.0.2 into work/ex/clippy-test-run/sources/stable/reg/classif/0.0.2
[INFO] extracting crate classif 0.0.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/classif/0.0.2
[INFO] validating manifest of classif-0.0.2 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 classif-0.0.2 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 classif-0.0.2
[INFO] finished frobbing classif-0.0.2
[INFO] frobbed toml for classif-0.0.2 written to work/ex/clippy-test-run/sources/stable/reg/classif/0.0.2/Cargo.toml
[INFO] started frobbing classif-0.0.2
[INFO] finished frobbing classif-0.0.2
[INFO] frobbed toml for classif-0.0.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/classif/0.0.2/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 classif-0.0.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/classif/0.0.2:/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] 72219ffacc071aba44ed4a64422530b3613f999db76419a5a57c45ff715b67ce
[INFO] running `"docker" "start" "-a" "72219ffacc071aba44ed4a64422530b3613f999db76419a5a57c45ff715b67ce"`
[INFO] [stderr]     Checking classif v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/jenks.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             dim: dim,
[INFO] [stderr]    |             ^^^^^^^^ help: replace it with: `dim`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/jenks.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut j = k;
[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: redundant field names in struct initialization
[INFO] [stderr]   --> src/classif.rs:97:16
[INFO] [stderr]    |
[INFO] [stderr] 97 |                type_classif: type_classif,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `type_classif`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/jenks.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |             dim: dim,
[INFO] [stderr]    |             ^^^^^^^^ help: replace it with: `dim`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/jenks.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut j = k;
[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: redundant field names in struct initialization
[INFO] [stderr]   --> src/classif.rs:97:16
[INFO] [stderr]    |
[INFO] [stderr] 97 |                type_classif: type_classif,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `type_classif`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/jenks.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:45:50
[INFO] [stderr]    |
[INFO] [stderr] 45 |         assert_eq!(b.bounds.as_slice(), [1., 7., 9.090909090909092, 11., 12.]);
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^ help: consider: `9.090_909_090_909_092`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:48:48
[INFO] [stderr]    |
[INFO] [stderr] 48 |         assert_eq!(breaks.as_slice(), [1., 7., 9.090909090909092, 11., 12.]);
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^ help: consider: `9.090_909_090_909_092`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:87:21
[INFO] [stderr]    |
[INFO] [stderr] 87 |                     1.5238095238095237,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^ help: consider: `1.523_809_523_809_523_7`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:88:21
[INFO] [stderr]    |
[INFO] [stderr] 88 |                     2.571428571428571,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: consider: `2.571_428_571_428_571`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:89:21
[INFO] [stderr]    |
[INFO] [stderr] 89 |                     4.142857142857142,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: consider: `4.142_857_142_857_142`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:90:21
[INFO] [stderr]    |
[INFO] [stderr] 90 |                     6.238095238095237,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: consider: `6.238_095_238_095_237`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:91:21
[INFO] [stderr]    |
[INFO] [stderr] 91 |                     8.857142857142856,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: consider: `8.857_142_857_142_856`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:97:21
[INFO] [stderr]    |
[INFO] [stderr] 97 |                     1.5238095238095237,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^ help: consider: `1.523_809_523_809_523_7`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:98:21
[INFO] [stderr]    |
[INFO] [stderr] 98 |                     2.571428571428571,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: consider: `2.571_428_571_428_571`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:99:21
[INFO] [stderr]    |
[INFO] [stderr] 99 |                     4.142857142857142,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: consider: `4.142_857_142_857_142`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:100:21
[INFO] [stderr]     |
[INFO] [stderr] 100 |                     6.238095238095237,
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^ help: consider: `6.238_095_238_095_237`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:101:21
[INFO] [stderr]     |
[INFO] [stderr] 101 |                     8.857142857142856,
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^ help: consider: `8.857_142_857_142_856`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:126:24
[INFO] [stderr]     |
[INFO] [stderr] 126 |         assert_eq!(kv, 0.042107329018970074);
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^ help: consider: `0.042_107_329_018_970_074`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:133:23
[INFO] [stderr]     |
[INFO] [stderr] 133 |         assert_eq!(r, 608.631578947369);
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^ help: consider: `608.631_578_947_369`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:135:23
[INFO] [stderr]     |
[INFO] [stderr] 135 |         assert_eq!(v, 8.008310249307486);
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^ help: consider: `8.008_310_249_307_486`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]  --> src/stats.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: you are collect()ing an iterator and throwing away the result. Consider using an explicit for loop to exhaust the iterator
[INFO] [stderr]  --> src/stats.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unused_collect)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_collect
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]   --> src/stats.rs:39:14
[INFO] [stderr]    |
[INFO] [stderr] 39 |     for i in 0..nb_elem {
[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] 39 |     for <item> in values.iter().take(nb_elem) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]   --> src/stats.rs:57:14
[INFO] [stderr]    |
[INFO] [stderr] 57 |     for i in 0..nb_elem {
[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] 57 |     for <item> in values.iter().take(nb_elem) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/jenks.rs:41:14
[INFO] [stderr]    |
[INFO] [stderr] 41 |     for l in 2..(nb_elem + 1) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use: `2..=nb_elem`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/jenks.rs:45:18
[INFO] [stderr]    |
[INFO] [stderr] 45 |         for m in 1..(l + 1) {
[INFO] [stderr]    |                  ^^^^^^^^^^ help: use: `1..=l`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/jenks.rs:54:26
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 for j in 2..k + 1 {
[INFO] [stderr]    |                          ^^^^^^^^ help: use: `2..=k`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/classif.rs:80:24
[INFO] [stderr]    |
[INFO] [stderr] 80 |             return Err("Too small number of values!".into());
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into()`: `"Too small number of values!"`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/classif.rs:129:14
[INFO] [stderr]     |
[INFO] [stderr] 129 |     for _ in 0..(nb_class + 1) {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^ help: use: `0..=nb_class`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/classif.rs:147:33
[INFO] [stderr]     |
[INFO] [stderr] 147 |     let step = nb_elem as f64 / nb_class as f64;
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^ help: try: `f64::from(nb_class)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/classif.rs:149:21
[INFO] [stderr]     |
[INFO] [stderr] 149 |         let qidx = (i as f64 * step + 0.49).floor() as usize;
[INFO] [stderr]     |                     ^^^^^^^^ help: try: `f64::from(i)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/classif.rs:211:14
[INFO] [stderr]     |
[INFO] [stderr] 211 |     for i in 1..nb_class + 1 {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^ help: use: `1..=nb_class`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/classif.rs:219:14
[INFO] [stderr]     |
[INFO] [stderr] 219 |     for i in 1..nb_class + 1 {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^ help: use: `1..=nb_class`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/jenks.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]  --> src/stats.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: you are collect()ing an iterator and throwing away the result. Consider using an explicit for loop to exhaust the iterator
[INFO] [stderr]  --> src/stats.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unused_collect)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_collect
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]   --> src/stats.rs:39:14
[INFO] [stderr]    |
[INFO] [stderr] 39 |     for i in 0..nb_elem {
[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] 39 |     for <item> in values.iter().take(nb_elem) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `values`.
[INFO] [stderr]   --> src/stats.rs:57:14
[INFO] [stderr]    |
[INFO] [stderr] 57 |     for i in 0..nb_elem {
[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] 57 |     for <item> in values.iter().take(nb_elem) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/jenks.rs:41:14
[INFO] [stderr]    |
[INFO] [stderr] 41 |     for l in 2..(nb_elem + 1) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^ help: use: `2..=nb_elem`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/jenks.rs:45:18
[INFO] [stderr]    |
[INFO] [stderr] 45 |         for m in 1..(l + 1) {
[INFO] [stderr]    |                  ^^^^^^^^^^ help: use: `1..=l`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/jenks.rs:54:26
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 for j in 2..k + 1 {
[INFO] [stderr]    |                          ^^^^^^^^ help: use: `2..=k`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/classif.rs:80:24
[INFO] [stderr]    |
[INFO] [stderr] 80 |             return Err("Too small number of values!".into());
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into()`: `"Too small number of values!"`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/classif.rs:129:14
[INFO] [stderr]     |
[INFO] [stderr] 129 |     for _ in 0..(nb_class + 1) {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^ help: use: `0..=nb_class`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/classif.rs:147:33
[INFO] [stderr]     |
[INFO] [stderr] 147 |     let step = nb_elem as f64 / nb_class as f64;
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^ help: try: `f64::from(nb_class)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/classif.rs:149:21
[INFO] [stderr]     |
[INFO] [stderr] 149 |         let qidx = (i as f64 * step + 0.49).floor() as usize;
[INFO] [stderr]     |                     ^^^^^^^^ help: try: `f64::from(i)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/classif.rs:211:14
[INFO] [stderr]     |
[INFO] [stderr] 211 |     for i in 1..nb_class + 1 {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^ help: use: `1..=nb_class`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/classif.rs:219:14
[INFO] [stderr]     |
[INFO] [stderr] 219 |     for i in 1..nb_class + 1 {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^ help: use: `1..=nb_class`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: The function/method `get_head_tail_breaks` doesn't need a mutable reference
[INFO] [stderr]   --> src/lib.rs:47:43
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let breaks = get_head_tail_breaks(&mut values);
[INFO] [stderr]    |                                           ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_mut_passed)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_mut_passed
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]    --> src/lib.rs:126:9
[INFO] [stderr]     |
[INFO] [stderr] 126 |         assert_eq!(kv, 0.042107329018970074);
[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/lib.rs:126:9
[INFO] [stderr]     |
[INFO] [stderr] 126 |         assert_eq!(kv, 0.042107329018970074);
[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/lib.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 |         assert_eq!(r, 608.631578947369);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]    --> src/lib.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 |         assert_eq!(r, 608.631578947369);
[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/lib.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |         assert_eq!(v, 8.008310249307486);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]    --> src/lib.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |         assert_eq!(v, 8.008310249307486);
[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/lib.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         assert_eq!(v, 1.);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]    --> src/lib.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         assert_eq!(v, 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/lib.rs:150:9
[INFO] [stderr]     |
[INFO] [stderr] 150 |         assert_eq!(median, 6.);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]    --> src/lib.rs:150:9
[INFO] [stderr]     |
[INFO] [stderr] 150 |         assert_eq!(median, 6.);
[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/lib.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 |         assert_eq!(median, 4.5);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]    --> src/lib.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 |         assert_eq!(median, 4.5);
[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: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `classif`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> benches/benchmark.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `classif`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "72219ffacc071aba44ed4a64422530b3613f999db76419a5a57c45ff715b67ce"`
[INFO] running `"docker" "rm" "-f" "72219ffacc071aba44ed4a64422530b3613f999db76419a5a57c45ff715b67ce"`
[INFO] [stdout] 72219ffacc071aba44ed4a64422530b3613f999db76419a5a57c45ff715b67ce