[INFO] updating cached repository adicatana/hello_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/adicatana/hello_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/adicatana/hello_rust" "work/ex/clippy-test-run/sources/stable/gh/adicatana/hello_rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/adicatana/hello_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/adicatana/hello_rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/adicatana/hello_rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/adicatana/hello_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dcc5bfe6df09e1d5297eb0ca44fa4553e22db9af
[INFO] sha for GitHub repo adicatana/hello_rust: dcc5bfe6df09e1d5297eb0ca44fa4553e22db9af
[INFO] validating manifest of adicatana/hello_rust 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 adicatana/hello_rust 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 adicatana/hello_rust
[INFO] finished frobbing adicatana/hello_rust
[INFO] frobbed toml for adicatana/hello_rust written to work/ex/clippy-test-run/sources/stable/gh/adicatana/hello_rust/Cargo.toml
[INFO] started frobbing adicatana/hello_rust
[INFO] finished frobbing adicatana/hello_rust
[INFO] frobbed toml for adicatana/hello_rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/adicatana/hello_rust/Cargo.toml
[INFO] crate adicatana/hello_rust 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 adicatana/hello_rust 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-1/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/adicatana/hello_rust:/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] ba5696e05318a713e0fbdebb17d7966ce9d539bcd2056dbfc2bf8f990abaede2
[INFO] running `"docker" "start" "-a" "ba5696e05318a713e0fbdebb17d7966ce9d539bcd2056dbfc2bf8f990abaede2"`
[INFO] [stderr]     Checking hello_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/two_sum.rs:21:16
[INFO] [stderr]    |
[INFO] [stderr] 21 |           } else {
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 22 | |             if let Some(&i) = freq.get(&curr) {
[INFO] [stderr] 23 | |                 freq.insert(curr, i + 1);
[INFO] [stderr] 24 | |             } else {
[INFO] [stderr] 25 | |                 freq.insert(curr, 1);
[INFO] [stderr] 26 | |             }
[INFO] [stderr] 27 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 21 |         } else if let Some(&i) = freq.get(&curr) {
[INFO] [stderr] 22 |     freq.insert(curr, i + 1);
[INFO] [stderr] 23 | } else {
[INFO] [stderr] 24 |     freq.insert(curr, 1);
[INFO] [stderr] 25 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/two_sum.rs:21:16
[INFO] [stderr]    |
[INFO] [stderr] 21 |           } else {
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 22 | |             if let Some(&i) = freq.get(&curr) {
[INFO] [stderr] 23 | |                 freq.insert(curr, i + 1);
[INFO] [stderr] 24 | |             } else {
[INFO] [stderr] 25 | |                 freq.insert(curr, 1);
[INFO] [stderr] 26 | |             }
[INFO] [stderr] 27 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 21 |         } else if let Some(&i) = freq.get(&curr) {
[INFO] [stderr] 22 |     freq.insert(curr, i + 1);
[INFO] [stderr] 23 | } else {
[INFO] [stderr] 24 |     freq.insert(curr, 1);
[INFO] [stderr] 25 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/fibonacci.rs:75:18
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn first_word(s: &String) -> &str {
[INFO] [stderr]    |                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/two_sum.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn two_sum(nums: &Vec<i32>, target: i32) -> Vec<(i32, i32)> {
[INFO] [stderr]   |                      ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `nums`.
[INFO] [stderr]   --> src/two_sum.rs:10:14
[INFO] [stderr]    |
[INFO] [stderr] 10 |     for i in 0..nums.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] 10 |     for <item> in &nums {
[INFO] [stderr]    |         ^^^^^^    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: The function/method `remove` doesn't need a mutable reference
[INFO] [stderr]   --> src/two_sum.rs:18:33
[INFO] [stderr]    |
[INFO] [stderr] 18 |                     freq.remove(&mut (target - curr));
[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] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/fibonacci.rs:75:18
[INFO] [stderr]    |
[INFO] [stderr] 75 | fn first_word(s: &String) -> &str {
[INFO] [stderr]    |                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/two_sum.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn two_sum(nums: &Vec<i32>, target: i32) -> Vec<(i32, i32)> {
[INFO] [stderr]   |                      ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `nums`.
[INFO] [stderr]   --> src/two_sum.rs:10:14
[INFO] [stderr]    |
[INFO] [stderr] 10 |     for i in 0..nums.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] 10 |     for <item> in &nums {
[INFO] [stderr]    |         ^^^^^^    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: The function/method `remove` doesn't need a mutable reference
[INFO] [stderr]   --> src/two_sum.rs:18:33
[INFO] [stderr]    |
[INFO] [stderr] 18 |                     freq.remove(&mut (target - curr));
[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] warning: constant item is never used: `FILE_IN`
[INFO] [stderr]   --> src/main.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | const FILE_IN: &str = "text.in";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `custom_read`
[INFO] [stderr]   --> src/main.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn custom_read() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]   --> src/main.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Point<T> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]   --> src/main.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn x(&self) -> &T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `FILE_IN`
[INFO] [stderr]   --> src/main.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | const FILE_IN: &str = "text.in";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `custom_read`
[INFO] [stderr]   --> src/main.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn custom_read() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]   --> src/main.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Point<T> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `x`
[INFO] [stderr]   --> src/main.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn x(&self) -> &T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.02s
[INFO] running `"docker" "inspect" "ba5696e05318a713e0fbdebb17d7966ce9d539bcd2056dbfc2bf8f990abaede2"`
[INFO] running `"docker" "rm" "-f" "ba5696e05318a713e0fbdebb17d7966ce9d539bcd2056dbfc2bf8f990abaede2"`
[INFO] [stdout] ba5696e05318a713e0fbdebb17d7966ce9d539bcd2056dbfc2bf8f990abaede2