[INFO] updating cached repository atsushi130/perceptron
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/atsushi130/perceptron
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/atsushi130/perceptron" "work/ex/clippy-test-run/sources/stable/gh/atsushi130/perceptron"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/atsushi130/perceptron'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/atsushi130/perceptron" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/atsushi130/perceptron"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/atsushi130/perceptron'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] faa5fe3c75986bcab83ca02d6551b0a4ddca9c3c
[INFO] sha for GitHub repo atsushi130/perceptron: faa5fe3c75986bcab83ca02d6551b0a4ddca9c3c
[INFO] validating manifest of atsushi130/perceptron 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 atsushi130/perceptron 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 atsushi130/perceptron
[INFO] finished frobbing atsushi130/perceptron
[INFO] frobbed toml for atsushi130/perceptron written to work/ex/clippy-test-run/sources/stable/gh/atsushi130/perceptron/Cargo.toml
[INFO] started frobbing atsushi130/perceptron
[INFO] finished frobbing atsushi130/perceptron
[INFO] frobbed toml for atsushi130/perceptron written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/atsushi130/perceptron/Cargo.toml
[INFO] crate atsushi130/perceptron 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 atsushi130/perceptron against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/atsushi130/perceptron:/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] 33f1d5323bb513198530e06aee5fc79474d86b17b51eff3e35d4ba0787c04843
[INFO] running `"docker" "start" "-a" "33f1d5323bb513198530e06aee5fc79474d86b17b51eff3e35d4ba0787c04843"`
[INFO] [stderr]     Checking perceptron v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/file_operator/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod file_operator;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/file_operator/parser/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod parser;
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/learner/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod learner;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/learner/perceptron/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod perceptron;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:64:19
[INFO] [stderr]    |
[INFO] [stderr] 64 |         self.sign((x as f64))
[INFO] [stderr]    |                   ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:64:19
[INFO] [stderr]    |
[INFO] [stderr] 64 |         self.sign((x as f64))
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::double_parens)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/file_operator/file_operator.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         reader.lines().into_iter().map( |line| {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `reader.lines()`
[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: you seem to want to iterate on a map's keys
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:25:38
[INFO] [stderr]    |
[INFO] [stderr] 25 |                     for (word, _) in &key_values {
[INFO] [stderr]    |                                      ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::for_kv_map)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 25 |                     for word in key_values.keys() {
[INFO] [stderr]    |                         ^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's keys
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:30:38
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     for (word, _) in &key_values {
[INFO] [stderr]    |                                      ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     for word in key_values.keys() {
[INFO] [stderr]    |                         ^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:62:10
[INFO] [stderr]    |
[INFO] [stderr] 62 |         ).fold(0, |sum, x| sum + x);
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.sum()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_fold)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 | /             match self.word_model.contains_key(word) {
[INFO] [stderr] 59 | |                 true => self.word_model[word] * key_values[word],
[INFO] [stderr] 60 | |                 false => 0,
[INFO] [stderr] 61 | |             }
[INFO] [stderr]    | |_____________^ help: consider using an if/else expression: `if self.word_model.contains_key(word) { self.word_model[word] * key_values[word] } else { 0 }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:64:19
[INFO] [stderr]    |
[INFO] [stderr] 64 |         self.sign((x as f64))
[INFO] [stderr]    |                   ^^^^^^^^^^ help: try: `f64::from(x)`
[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: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 | /         match x < 0. {
[INFO] [stderr] 69 | |             true  => -1,
[INFO] [stderr] 70 | |             false => 1
[INFO] [stderr] 71 | |         }
[INFO] [stderr]    | |_________^ help: consider using an if/else expression: `if x < 0. { -1 } else { 1 }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/file_operator/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod file_operator;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/file_operator/parser/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod parser;
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/learner/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod learner;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/learner/perceptron/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod perceptron;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:64:19
[INFO] [stderr]    |
[INFO] [stderr] 64 |         self.sign((x as f64))
[INFO] [stderr]    |                   ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:64:19
[INFO] [stderr]    |
[INFO] [stderr] 64 |         self.sign((x as f64))
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::double_parens)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/file_operator/file_operator.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         reader.lines().into_iter().map( |line| {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `reader.lines()`
[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: you seem to want to iterate on a map's keys
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:25:38
[INFO] [stderr]    |
[INFO] [stderr] 25 |                     for (word, _) in &key_values {
[INFO] [stderr]    |                                      ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::for_kv_map)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 25 |                     for word in key_values.keys() {
[INFO] [stderr]    |                         ^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to want to iterate on a map's keys
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:30:38
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     for (word, _) in &key_values {
[INFO] [stderr]    |                                      ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     for word in key_values.keys() {
[INFO] [stderr]    |                         ^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:62:10
[INFO] [stderr]    |
[INFO] [stderr] 62 |         ).fold(0, |sum, x| sum + x);
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.sum()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_fold)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 | /             match self.word_model.contains_key(word) {
[INFO] [stderr] 59 | |                 true => self.word_model[word] * key_values[word],
[INFO] [stderr] 60 | |                 false => 0,
[INFO] [stderr] 61 | |             }
[INFO] [stderr]    | |_____________^ help: consider using an if/else expression: `if self.word_model.contains_key(word) { self.word_model[word] * key_values[word] } else { 0 }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:64:19
[INFO] [stderr]    |
[INFO] [stderr] 64 |         self.sign((x as f64))
[INFO] [stderr]    |                   ^^^^^^^^^^ help: try: `f64::from(x)`
[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: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/learner/perceptron/perceptron.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 | /         match x < 0. {
[INFO] [stderr] 69 | |             true  => -1,
[INFO] [stderr] 70 | |             false => 1
[INFO] [stderr] 71 | |         }
[INFO] [stderr]    | |_________^ help: consider using an if/else expression: `if x < 0. { -1 } else { 1 }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "33f1d5323bb513198530e06aee5fc79474d86b17b51eff3e35d4ba0787c04843"`
[INFO] running `"docker" "rm" "-f" "33f1d5323bb513198530e06aee5fc79474d86b17b51eff3e35d4ba0787c04843"`
[INFO] [stdout] 33f1d5323bb513198530e06aee5fc79474d86b17b51eff3e35d4ba0787c04843