[INFO] updating cached repository christophertrml/rs-natural
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/christophertrml/rs-natural
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/christophertrml/rs-natural" "work/ex/clippy-test-run/sources/stable/gh/christophertrml/rs-natural"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/christophertrml/rs-natural'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/christophertrml/rs-natural" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/christophertrml/rs-natural"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/christophertrml/rs-natural'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f8f45f60caaf16c9d5865922d6ad9e6d67f55b31
[INFO] sha for GitHub repo christophertrml/rs-natural: f8f45f60caaf16c9d5865922d6ad9e6d67f55b31
[INFO] validating manifest of christophertrml/rs-natural 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 christophertrml/rs-natural 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 christophertrml/rs-natural
[INFO] finished frobbing christophertrml/rs-natural
[INFO] frobbed toml for christophertrml/rs-natural written to work/ex/clippy-test-run/sources/stable/gh/christophertrml/rs-natural/Cargo.toml
[INFO] started frobbing christophertrml/rs-natural
[INFO] finished frobbing christophertrml/rs-natural
[INFO] frobbed toml for christophertrml/rs-natural written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/christophertrml/rs-natural/Cargo.toml
[INFO] crate christophertrml/rs-natural 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 christophertrml/rs-natural against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/christophertrml/rs-natural:/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 -Dclippy::into_iter_on_array" "-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] 4225043e73840512f46064746f2d4e0a77fcd94cef256e686864333e15758efe
[INFO] running `"docker" "start" "-a" "4225043e73840512f46064746f2d4e0a77fcd94cef256e686864333e15758efe"`
[INFO] [stderr]     Checking natural v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/stem.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 b: b,
[INFO] [stderr]    |                 ^^^^ help: replace it with: `b`
[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: redundant field names in struct initialization
[INFO] [stderr]   --> src/stem.rs:24:17
[INFO] [stderr]    |
[INFO] [stderr] 24 |                 k: k,
[INFO] [stderr]    |                 ^^^^ help: replace it with: `k`
[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/stem.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 b: b,
[INFO] [stderr]    |                 ^^^^ help: replace it with: `b`
[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: redundant field names in struct initialization
[INFO] [stderr]   --> src/stem.rs:24:17
[INFO] [stderr]    |
[INFO] [stderr] 24 |                 k: k,
[INFO] [stderr]    |                 ^^^^ help: replace it with: `k`
[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: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/tf_idf.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]  --> src/stem.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ascii::AsciiExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/tf_idf.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]  --> src/stem.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ascii::AsciiExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stderr]  --> src/stem.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ascii::AsciiExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `normalized_prob` is never read
[INFO] [stderr]   --> src/classifier.rs:39:15
[INFO] [stderr]    |
[INFO] [stderr] 39 |       let mut normalized_prob = 0.0;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/distance.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | /     let mut s = str2;
[INFO] [stderr] 22 | |
[INFO] [stderr] 23 | |     if ordering {
[INFO] [stderr] 24 | |         f = str2;
[INFO] [stderr] 25 | |         s = str1;
[INFO] [stderr] 26 | |     }
[INFO] [stderr]    | |_____^ help: it is more idiomatic to write: `let <mut> s = if ordering { ..; str1 } else { str2 };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/distance.rs:78:34
[INFO] [stderr]    |
[INFO] [stderr] 78 |     let mut column: Vec<usize> = (0..n + 1).collect();
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: use: `(0..=n)`
[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/distance.rs:82:14
[INFO] [stderr]    |
[INFO] [stderr] 82 |     for i in 1..m + 1 {
[INFO] [stderr]    |              ^^^^^^^^ help: use: `1..=m`
[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/distance.rs:86:18
[INFO] [stderr]    |
[INFO] [stderr] 86 |         for j in 1..n + 1 {
[INFO] [stderr]    |                  ^^^^^^^^ help: use: `1..=n`
[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 loop variable `i` is only used to index `chars`.
[INFO] [stderr]   --> src/phonetics.rs:45:12
[INFO] [stderr]    |
[INFO] [stderr] 45 |   for i in 1..chars.len() {
[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] 45 |   for <item> in chars.iter().skip(1) {
[INFO] [stderr]    |       ^^^^^^    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `classifier::NaiveBayesClassifier`
[INFO] [stderr]   --> src/classifier.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 | /   pub fn new() -> NaiveBayesClassifier {
[INFO] [stderr] 12 | |     NaiveBayesClassifier {
[INFO] [stderr] 13 | |       documents: HashMap::new(),
[INFO] [stderr] 14 | |       total_document_count: 0,
[INFO] [stderr] 15 | |     }
[INFO] [stderr] 16 | |   }
[INFO] [stderr]    | |___^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 5  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]   --> src/classifier.rs:21:45
[INFO] [stderr]    |
[INFO] [stderr] 21 |                                            .or_insert(HashMap::new());
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(HashMap::new)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stderr]  --> src/stem.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::ascii::AsciiExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `tf_idf::TfIdf`
[INFO] [stderr]   --> src/tf_idf.rs:21:2
[INFO] [stderr]    |
[INFO] [stderr] 21 |       pub fn new() -> TfIdf {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 22 | |         TfIdf {
[INFO] [stderr] 23 | |             doc_freqs: HashMap::new(),
[INFO] [stderr] 24 | |             term_freqs: HashMap::new(),
[INFO] [stderr] ...  |
[INFO] [stderr] 27 | |         }
[INFO] [stderr] 28 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 6  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter_mut() and will not move the Vec
[INFO] [stderr]   --> src/tf_idf.rs:35:27
[INFO] [stderr]    |
[INFO] [stderr] 35 |         for token in tokens_ref.into_iter() {
[INFO] [stderr]    |                                 ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter_mut() and will not move the Vec
[INFO] [stderr]   --> src/tf_idf.rs:45:27
[INFO] [stderr]    |
[INFO] [stderr] 45 |         for token in tokens_ref.into_iter() {
[INFO] [stderr]    |                                 ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/tf_idf.rs:57:18
[INFO] [stderr]    |
[INFO] [stderr] 57 |             Some(freq) => freq.clone() as f32 / self.word_count as f32,
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: try dereferencing it: `*freq`
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/tf_idf.rs:65:18
[INFO] [stderr]    |
[INFO] [stderr] 65 |             Some(freq) => freq.clone() as f32,
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: try dereferencing it: `*freq`
[INFO] [stderr]    |
[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: this .into_iter() call is equivalent to .iter() and will not move the Vec
[INFO] [stderr]   --> src/tf_idf.rs:87:30
[INFO] [stderr]    |
[INFO] [stderr] 87 |         let score: f32 = token_ref.into_iter()
[INFO] [stderr]    |                                    ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `normalized_prob` is never read
[INFO] [stderr]   --> src/classifier.rs:39:15
[INFO] [stderr]    |
[INFO] [stderr] 39 |       let mut normalized_prob = 0.0;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `s`
[INFO] [stderr]    --> src/stem.rs:122:18
[INFO] [stderr]     |
[INFO] [stderr] 122 |         for i in 0..(len) {
[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] 122 |         for (i, <item>) in s.iter().enumerate().take((len)) {
[INFO] [stderr]     |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: this `if` has identical blocks
[INFO] [stderr]    --> src/stem.rs:268:41
[INFO] [stderr]     |
[INFO] [stderr] 268 |                 else if self.ends("ou") {}
[INFO] [stderr]     |                                         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::if_same_then_else)] on by default
[INFO] [stderr] note: same as this
[INFO] [stderr]    --> src/stem.rs:267:80
[INFO] [stderr]     |
[INFO] [stderr] 267 |                     (self.b[self.j - 1] == b's' || self.b[self.j - 1] == b't') {}
[INFO] [stderr]     |                                                                                ^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `natural`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/distance.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | /     let mut s = str2;
[INFO] [stderr] 22 | |
[INFO] [stderr] 23 | |     if ordering {
[INFO] [stderr] 24 | |         f = str2;
[INFO] [stderr] 25 | |         s = str1;
[INFO] [stderr] 26 | |     }
[INFO] [stderr]    | |_____^ help: it is more idiomatic to write: `let <mut> s = if ordering { ..; str1 } else { str2 };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/distance.rs:78:34
[INFO] [stderr]    |
[INFO] [stderr] 78 |     let mut column: Vec<usize> = (0..n + 1).collect();
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: use: `(0..=n)`
[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/distance.rs:82:14
[INFO] [stderr]    |
[INFO] [stderr] 82 |     for i in 1..m + 1 {
[INFO] [stderr]    |              ^^^^^^^^ help: use: `1..=m`
[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/distance.rs:86:18
[INFO] [stderr]    |
[INFO] [stderr] 86 |         for j in 1..n + 1 {
[INFO] [stderr]    |                  ^^^^^^^^ help: use: `1..=n`
[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 loop variable `i` is only used to index `chars`.
[INFO] [stderr]   --> src/phonetics.rs:45:12
[INFO] [stderr]    |
[INFO] [stderr] 45 |   for i in 1..chars.len() {
[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] 45 |   for <item> in chars.iter().skip(1) {
[INFO] [stderr]    |       ^^^^^^    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `classifier::NaiveBayesClassifier`
[INFO] [stderr]   --> src/classifier.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 | /   pub fn new() -> NaiveBayesClassifier {
[INFO] [stderr] 12 | |     NaiveBayesClassifier {
[INFO] [stderr] 13 | |       documents: HashMap::new(),
[INFO] [stderr] 14 | |       total_document_count: 0,
[INFO] [stderr] 15 | |     }
[INFO] [stderr] 16 | |   }
[INFO] [stderr]    | |___^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 5  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]   --> src/classifier.rs:21:45
[INFO] [stderr]    |
[INFO] [stderr] 21 |                                            .or_insert(HashMap::new());
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(HashMap::new)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `tf_idf::TfIdf`
[INFO] [stderr]   --> src/tf_idf.rs:21:2
[INFO] [stderr]    |
[INFO] [stderr] 21 |       pub fn new() -> TfIdf {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 22 | |         TfIdf {
[INFO] [stderr] 23 | |             doc_freqs: HashMap::new(),
[INFO] [stderr] 24 | |             term_freqs: HashMap::new(),
[INFO] [stderr] ...  |
[INFO] [stderr] 27 | |         }
[INFO] [stderr] 28 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 6  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter_mut() and will not move the Vec
[INFO] [stderr]   --> src/tf_idf.rs:35:27
[INFO] [stderr]    |
[INFO] [stderr] 35 |         for token in tokens_ref.into_iter() {
[INFO] [stderr]    |                                 ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::into_iter_on_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter_mut() and will not move the Vec
[INFO] [stderr]   --> src/tf_idf.rs:45:27
[INFO] [stderr]    |
[INFO] [stderr] 45 |         for token in tokens_ref.into_iter() {
[INFO] [stderr]    |                                 ^^^^^^^^^ help: call directly: `iter_mut`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/tf_idf.rs:57:18
[INFO] [stderr]    |
[INFO] [stderr] 57 |             Some(freq) => freq.clone() as f32 / self.word_count as f32,
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: try dereferencing it: `*freq`
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/tf_idf.rs:65:18
[INFO] [stderr]    |
[INFO] [stderr] 65 |             Some(freq) => freq.clone() as f32,
[INFO] [stderr]    |                           ^^^^^^^^^^^^ help: try dereferencing it: `*freq`
[INFO] [stderr]    |
[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: this .into_iter() call is equivalent to .iter() and will not move the Vec
[INFO] [stderr]   --> src/tf_idf.rs:87:30
[INFO] [stderr]    |
[INFO] [stderr] 87 |         let score: f32 = token_ref.into_iter()
[INFO] [stderr]    |                                    ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `s`
[INFO] [stderr]    --> src/stem.rs:122:18
[INFO] [stderr]     |
[INFO] [stderr] 122 |         for i in 0..(len) {
[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] 122 |         for (i, <item>) in s.iter().enumerate().take((len)) {
[INFO] [stderr]     |             ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: this `if` has identical blocks
[INFO] [stderr]    --> src/stem.rs:268:41
[INFO] [stderr]     |
[INFO] [stderr] 268 |                 else if self.ends("ou") {}
[INFO] [stderr]     |                                         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::if_same_then_else)] on by default
[INFO] [stderr] note: same as this
[INFO] [stderr]    --> src/stem.rs:267:80
[INFO] [stderr]     |
[INFO] [stderr] 267 |                     (self.b[self.j - 1] == b's' || self.b[self.j - 1] == b't') {}
[INFO] [stderr]     |                                                                                ^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `natural`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4225043e73840512f46064746f2d4e0a77fcd94cef256e686864333e15758efe"`
[INFO] running `"docker" "rm" "-f" "4225043e73840512f46064746f2d4e0a77fcd94cef256e686864333e15758efe"`
[INFO] [stdout] 4225043e73840512f46064746f2d4e0a77fcd94cef256e686864333e15758efe