[INFO] updating cached repository KitFreddura/Kinder
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/KitFreddura/Kinder
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/KitFreddura/Kinder" "work/ex/clippy-test-run/sources/stable/gh/KitFreddura/Kinder"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/KitFreddura/Kinder'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/KitFreddura/Kinder" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/KitFreddura/Kinder"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/KitFreddura/Kinder'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8fd4577ce5cde1648831047f8e516325f9459579
[INFO] sha for GitHub repo KitFreddura/Kinder: 8fd4577ce5cde1648831047f8e516325f9459579
[INFO] validating manifest of KitFreddura/Kinder 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 KitFreddura/Kinder 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 KitFreddura/Kinder
[INFO] finished frobbing KitFreddura/Kinder
[INFO] frobbed toml for KitFreddura/Kinder written to work/ex/clippy-test-run/sources/stable/gh/KitFreddura/Kinder/Cargo.toml
[INFO] started frobbing KitFreddura/Kinder
[INFO] finished frobbing KitFreddura/Kinder
[INFO] frobbed toml for KitFreddura/Kinder written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/KitFreddura/Kinder/Cargo.toml
[INFO] crate KitFreddura/Kinder 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 KitFreddura/Kinder against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/KitFreddura/Kinder:/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] cdba6c861bd9347a92edbe74b7a7d591a35f19ca6bf7db6914cfedbccccca2d0
[INFO] running `"docker" "start" "-a" "cdba6c861bd9347a92edbe74b7a7d591a35f19ca6bf7db6914cfedbccccca2d0"`
[INFO] [stderr]     Checking kinder v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/lift.rs:17:37
[INFO] [stderr]    |
[INFO] [stderr] 17 |         impl<A,C> Higher<A> for $t<C> {
[INFO] [stderr]    |                                     ^
[INFO] [stderr] ...
[INFO] [stderr] 32 | lift!(HashSet);
[INFO] [stderr]    | --------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::implicit_hasher)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 17 |         impl<A,C, S: ::std::hash::BuildHasher> Higher<A> for $t<CHashSet<C, S> {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/monad.rs:114:47
[INFO] [stderr]     |
[INFO] [stderr] 114 | impl<A: Eq + Hash, B: Eq + Hash> Monad<A> for HashSet<B> {
[INFO] [stderr]     |                                               ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 114 | impl<A: Eq + Hash, B: Eq + Hash, S: ::std::hash::BuildHasher> Monad<A> for HashSet<B, S> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/functor.rs:47:49
[INFO] [stderr]    |
[INFO] [stderr] 47 | impl<A: Eq + Hash, B: Eq + Hash> Functor<A> for HashSet<B> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 47 | impl<A: Eq + Hash, B: Eq + Hash, S: ::std::hash::BuildHasher> Functor<A> for HashSet<B, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/monoid.rs:28:39
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl<T: Hash + Clone + Eq> Monoid for HashSet<T> {
[INFO] [stderr]    |                                       ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl<T: Hash + Clone + Eq, S: ::std::hash::BuildHasher + Default> Monoid for HashSet<T, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^            ^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 30 |         HashSet::default()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/semigroup.rs:35:42
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl<T: Clone + Hash + Eq> SemiGroup for HashSet<T> {
[INFO] [stderr]    |                                          ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl<T: Clone + Hash + Eq, S: ::std::hash::BuildHasher + Default> SemiGroup for HashSet<T, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^               ^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut ret = HashSet::default();
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/foldable.rs:37:33
[INFO] [stderr]    |
[INFO] [stderr] 37 | impl<T: Hash + Eq> Foldable for HashSet<T> {
[INFO] [stderr]    |                                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 37 | impl<T: Hash + Eq, S: ::std::hash::BuildHasher> Foldable for HashSet<T, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/lift.rs:17:37
[INFO] [stderr]    |
[INFO] [stderr] 17 |         impl<A,C> Higher<A> for $t<C> {
[INFO] [stderr]    |                                     ^
[INFO] [stderr] ...
[INFO] [stderr] 32 | lift!(HashSet);
[INFO] [stderr]    | --------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::implicit_hasher)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 17 |         impl<A,C, S: ::std::hash::BuildHasher> Higher<A> for $t<CHashSet<C, S> {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/monad.rs:114:47
[INFO] [stderr]     |
[INFO] [stderr] 114 | impl<A: Eq + Hash, B: Eq + Hash> Monad<A> for HashSet<B> {
[INFO] [stderr]     |                                               ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]     |
[INFO] [stderr] 114 | impl<A: Eq + Hash, B: Eq + Hash, S: ::std::hash::BuildHasher> Monad<A> for HashSet<B, S> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/functor.rs:47:49
[INFO] [stderr]    |
[INFO] [stderr] 47 | impl<A: Eq + Hash, B: Eq + Hash> Functor<A> for HashSet<B> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 47 | impl<A: Eq + Hash, B: Eq + Hash, S: ::std::hash::BuildHasher> Functor<A> for HashSet<B, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/monoid.rs:28:39
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl<T: Hash + Clone + Eq> Monoid for HashSet<T> {
[INFO] [stderr]    |                                       ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl<T: Hash + Clone + Eq, S: ::std::hash::BuildHasher + Default> Monoid for HashSet<T, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^            ^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 30 |         HashSet::default()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/semigroup.rs:35:42
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl<T: Clone + Hash + Eq> SemiGroup for HashSet<T> {
[INFO] [stderr]    |                                          ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl<T: Clone + Hash + Eq, S: ::std::hash::BuildHasher + Default> SemiGroup for HashSet<T, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^               ^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut ret = HashSet::default();
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/foldable.rs:37:33
[INFO] [stderr]    |
[INFO] [stderr] 37 | impl<T: Hash + Eq> Foldable for HashSet<T> {
[INFO] [stderr]    |                                 ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
[INFO] [stderr] help: consider adding a type parameter
[INFO] [stderr]    |
[INFO] [stderr] 37 | impl<T: Hash + Eq, S: ::std::hash::BuildHasher> Foldable for HashSet<T, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> examples/option-examples.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn add_option(x: &Option<i32>, y: i32) -> Option<i32> {
[INFO] [stderr]   |                  ^^^^^^^^^^^^ help: consider passing by value instead: `Option<i32>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> examples/option-examples.rs:8:19
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn add_options(x: &Option<i32>, y: &Option<i32>) -> Option<i32> {
[INFO] [stderr]   |                   ^^^^^^^^^^^^ help: consider passing by value instead: `Option<i32>`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> examples/option-examples.rs:8:36
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn add_options(x: &Option<i32>, y: &Option<i32>) -> Option<i32> {
[INFO] [stderr]   |                                    ^^^^^^^^^^^^ help: consider passing by value instead: `Option<i32>`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> examples/vec-examples.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn fmap_vec(vec: &Vec<i32>) -> Vec<i32> {
[INFO] [stderr]   |                  ^^^^^^^^^ help: change this to: `&[i32]`
[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]  --> examples/vec-examples.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn append_vec(vec: &Vec<i32>, two: &Vec<i32>) -> Vec<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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> examples/vec-examples.rs:8:36
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn append_vec(vec: &Vec<i32>, two: &Vec<i32>) -> Vec<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]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `"docker" "inspect" "cdba6c861bd9347a92edbe74b7a7d591a35f19ca6bf7db6914cfedbccccca2d0"`
[INFO] running `"docker" "rm" "-f" "cdba6c861bd9347a92edbe74b7a7d591a35f19ca6bf7db6914cfedbccccca2d0"`
[INFO] [stdout] cdba6c861bd9347a92edbe74b7a7d591a35f19ca6bf7db6914cfedbccccca2d0