[INFO] crate hist 0.1.0 is already in cache
[INFO] extracting crate hist 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/hist/0.1.0
[INFO] extracting crate hist 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hist/0.1.0
[INFO] validating manifest of hist-0.1.0 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 hist-0.1.0 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 hist-0.1.0
[INFO] finished frobbing hist-0.1.0
[INFO] frobbed toml for hist-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/hist/0.1.0/Cargo.toml
[INFO] started frobbing hist-0.1.0
[INFO] finished frobbing hist-0.1.0
[INFO] frobbed toml for hist-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hist/0.1.0/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 hist-0.1.0 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/reg/hist/0.1.0:/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] b66416da50c8da0f7bf4d41dba1406a89bbac8486cd6bb7d22750a2797dead8c
[INFO] running `"docker" "start" "-a" "b66416da50c8da0f7bf4d41dba1406a89bbac8486cd6bb7d22750a2797dead8c"`
[INFO] [stderr]     Checking hist v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/lib.rs:130:13
[INFO] [stderr]     |
[INFO] [stderr] 130 |             println!("");
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/lib.rs:130:13
[INFO] [stderr]     |
[INFO] [stderr] 130 |             println!("");
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[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/lib.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(_w:i32, _h:i32, _x:&Vec<i32>, _y:&Vec<i32>) -> Hist {
[INFO] [stderr]    |                                   ^^^^^^^^^
[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] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(_w:i32, _h:i32, _x:&[i32], _y:&Vec<i32>) -> Hist {
[INFO] [stderr]    |                                   ^^^^^^
[INFO] [stderr] help: change `_x.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 21 |             x:_x.to_owned(),
[INFO] [stderr]    |               ^^^^^^^^^^^^^
[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/lib.rs:13:49
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(_w:i32, _h:i32, _x:&Vec<i32>, _y:&Vec<i32>) -> Hist {
[INFO] [stderr]    |                                                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(_w:i32, _h:i32, _x:&Vec<i32>, _y:&[i32]) -> Hist {
[INFO] [stderr]    |                                                 ^^^^^^
[INFO] [stderr] help: change `_y.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 22 |             y:_y.to_owned()
[INFO] [stderr]    |               ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/lib.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |         assert!(_x.len() > 0 && _y.len() > 0, "Both len(x) and len(y) should be non-zero.");
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!_x.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/lib.rs:15:33
[INFO] [stderr]    |
[INFO] [stderr] 15 |         assert!(_x.len() > 0 && _y.len() > 0, "Both len(x) and len(y) should be non-zero.");
[INFO] [stderr]    |                                 ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!_y.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         self.y.iter().min().unwrap().clone()
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.y.iter().min().unwrap()`
[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/lib.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |         self.y.iter().max().unwrap().clone() 
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.y.iter().max().unwrap()`
[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 `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/lib.rs:86:22
[INFO] [stderr]    |
[INFO] [stderr] 86 |         self.y.iter().fold(0i32, |sum, val| sum + val) / self.y.len() as i32
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:97:21
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let min_x = self.x.iter().min().unwrap().clone();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.x.iter().min().unwrap()`
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:98:21
[INFO] [stderr]    |
[INFO] [stderr] 98 |         let max_x = self.x.iter().max().unwrap().clone();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.x.iter().max().unwrap()`
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:99:21
[INFO] [stderr]    |
[INFO] [stderr] 99 |         let min_y = self.y.iter().min().unwrap().clone();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.y.iter().min().unwrap()`
[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: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:100:21
[INFO] [stderr]     |
[INFO] [stderr] 100 |         let max_y = self.y.iter().max().unwrap().clone();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.y.iter().max().unwrap()`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:116:20
[INFO] [stderr]     |
[INFO] [stderr] 116 |         for row in 0..self.h + 1 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^ help: use: `0..=self.h`
[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/lib.rs:118:24
[INFO] [stderr]     |
[INFO] [stderr] 118 |             for col in 0..self.w + 1 {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^ help: use: `0..=self.w`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/lib.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(_w:i32, _h:i32, _x:&Vec<i32>, _y:&Vec<i32>) -> Hist {
[INFO] [stderr]    |                                   ^^^^^^^^^
[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] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(_w:i32, _h:i32, _x:&[i32], _y:&Vec<i32>) -> Hist {
[INFO] [stderr]    |                                   ^^^^^^
[INFO] [stderr] help: change `_x.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 21 |             x:_x.to_owned(),
[INFO] [stderr]    |               ^^^^^^^^^^^^^
[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/lib.rs:13:49
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(_w:i32, _h:i32, _x:&Vec<i32>, _y:&Vec<i32>) -> Hist {
[INFO] [stderr]    |                                                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(_w:i32, _h:i32, _x:&Vec<i32>, _y:&[i32]) -> Hist {
[INFO] [stderr]    |                                                 ^^^^^^
[INFO] [stderr] help: change `_y.clone()` to
[INFO] [stderr]    |
[INFO] [stderr] 22 |             y:_y.to_owned()
[INFO] [stderr]    |               ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/lib.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |         assert!(_x.len() > 0 && _y.len() > 0, "Both len(x) and len(y) should be non-zero.");
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!_x.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/lib.rs:15:33
[INFO] [stderr]    |
[INFO] [stderr] 15 |         assert!(_x.len() > 0 && _y.len() > 0, "Both len(x) and len(y) should be non-zero.");
[INFO] [stderr]    |                                 ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!_y.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         self.y.iter().min().unwrap().clone()
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.y.iter().min().unwrap()`
[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/lib.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |         self.y.iter().max().unwrap().clone() 
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.y.iter().max().unwrap()`
[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 `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/lib.rs:86:22
[INFO] [stderr]    |
[INFO] [stderr] 86 |         self.y.iter().fold(0i32, |sum, val| sum + val) / self.y.len() as i32
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:97:21
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let min_x = self.x.iter().min().unwrap().clone();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.x.iter().min().unwrap()`
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:98:21
[INFO] [stderr]    |
[INFO] [stderr] 98 |         let max_x = self.x.iter().max().unwrap().clone();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.x.iter().max().unwrap()`
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/lib.rs:99:21
[INFO] [stderr]    |
[INFO] [stderr] 99 |         let min_y = self.y.iter().min().unwrap().clone();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.y.iter().min().unwrap()`
[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: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:100:21
[INFO] [stderr]     |
[INFO] [stderr] 100 |         let max_y = self.y.iter().max().unwrap().clone();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.y.iter().max().unwrap()`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:116:20
[INFO] [stderr]     |
[INFO] [stderr] 116 |         for row in 0..self.h + 1 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^ help: use: `0..=self.h`
[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/lib.rs:118:24
[INFO] [stderr]     |
[INFO] [stderr] 118 |             for col in 0..self.w + 1 {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^ help: use: `0..=self.w`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `"docker" "inspect" "b66416da50c8da0f7bf4d41dba1406a89bbac8486cd6bb7d22750a2797dead8c"`
[INFO] running `"docker" "rm" "-f" "b66416da50c8da0f7bf4d41dba1406a89bbac8486cd6bb7d22750a2797dead8c"`
[INFO] [stdout] b66416da50c8da0f7bf4d41dba1406a89bbac8486cd6bb7d22750a2797dead8c