[INFO] crate frust 0.0.7 is already in cache
[INFO] extracting crate frust 0.0.7 into work/ex/clippy-test-run/sources/stable/reg/frust/0.0.7
[INFO] extracting crate frust 0.0.7 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/frust/0.0.7
[INFO] validating manifest of frust-0.0.7 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 frust-0.0.7 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 frust-0.0.7
[INFO] finished frobbing frust-0.0.7
[INFO] frobbed toml for frust-0.0.7 written to work/ex/clippy-test-run/sources/stable/reg/frust/0.0.7/Cargo.toml
[INFO] started frobbing frust-0.0.7
[INFO] finished frobbing frust-0.0.7
[INFO] frobbed toml for frust-0.0.7 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/frust/0.0.7/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 frust-0.0.7 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/reg/frust/0.0.7:/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] 8a779ca0611c49ae095556b6c94d897885c8860270cb4c34c7fc2ff491d9f235
[INFO] running `"docker" "start" "-a" "8a779ca0611c49ae095556b6c94d897885c8860270cb4c34c7fc2ff491d9f235"`
[INFO] [stderr]     Checking frust v0.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/validated.rs:238:31
[INFO] [stderr]     |
[INFO] [stderr] 238 |                               name: name,
[INFO] [stderr]     |                               ^^^^^^^^^^ help: replace it with: `name`
[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/validated.rs:239:31
[INFO] [stderr]     |
[INFO] [stderr] 239 |                               age: age,
[INFO] [stderr]     |                               ^^^^^^^^ help: replace it with: `age`
[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/validated.rs:238:31
[INFO] [stderr]     |
[INFO] [stderr] 238 |                               name: name,
[INFO] [stderr]     |                               ^^^^^^^^^^ help: replace it with: `name`
[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/validated.rs:239:31
[INFO] [stderr]     |
[INFO] [stderr] 239 |                               age: age,
[INFO] [stderr]     |                               ^^^^^^^^ help: replace it with: `age`
[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::collections::*`
[INFO] [stderr]    --> src/semigroup.rs:313:9
[INFO] [stderr]     |
[INFO] [stderr] 313 |     use std::collections::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::*`
[INFO] [stderr]    --> src/semigroup.rs:314:9
[INFO] [stderr]     |
[INFO] [stderr] 314 |     use std::cell::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::*`
[INFO] [stderr]    --> src/monoid.rs:226:9
[INFO] [stderr]     |
[INFO] [stderr] 226 |     use std::collections::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/show.rs:101:18
[INFO] [stderr]     |
[INFO] [stderr] 101 | impl<T> Show for HashSet<T>
[INFO] [stderr]     |                  ^^^^^^^^^^
[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] 101 | impl<T, S: ::std::hash::BuildHasher> Show for HashSet<T, S>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the HashSet
[INFO] [stderr]    --> src/show.rs:105:26
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let shown = self.into_iter()
[INFO] [stderr]     |                          ^^^^^^^^^ help: call directly: `iter`
[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: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/show.rs:112:21
[INFO] [stderr]     |
[INFO] [stderr] 112 | impl<K, V> Show for HashMap<K, V>
[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] 112 | impl<K, V, S: ::std::hash::BuildHasher> Show for HashMap<K, V, S>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^          ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the HashMap
[INFO] [stderr]    --> src/show.rs:117:26
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let shown = self.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/semigroup.rs:58:34
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn combine_all_option<T>(xs: &Vec<T>) -> Option<T>
[INFO] [stderr]    |                                  ^^^^^^^ help: change this to: `&[T]`
[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: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/semigroup.rs:157:23
[INFO] [stderr]     |
[INFO] [stderr] 157 | impl<T> 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] 157 | impl<T, S: ::std::hash::BuildHasher + Default> Semigroup for HashSet<T, S>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^               ^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]     |
[INFO] [stderr] 161 |         let mut h = HashSet::default();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/semigroup.rs:172:26
[INFO] [stderr]     |
[INFO] [stderr] 172 | impl<K, V> Semigroup for HashMap<K, V>
[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] 172 | impl<K, V, S: ::std::hash::BuildHasher + Default> Semigroup for HashMap<K, V, S>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^               ^^^^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let mut h: HashMap<K, V> = HashMap::default();
[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/monoid.rs:33:27
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn combine_all<T>(xs: &Vec<T>) -> T
[INFO] [stderr]    |                           ^^^^^^^ help: change this to: `&[T]`
[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: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/monoid.rs:65:20
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl<T> 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] 65 | impl<T, S: ::std::hash::BuildHasher + Default> Monoid for HashSet<T, S>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^            ^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 69 |         HashSet::default()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/monoid.rs:73:23
[INFO] [stderr]    |
[INFO] [stderr] 73 | impl<K, V> Monoid for HashMap<K, V>
[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] 73 | impl<K, V, S: ::std::hash::BuildHasher + Default> Monoid for HashMap<K, V, S>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^            ^^^^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 78 |         HashMap::default()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/show.rs:101:18
[INFO] [stderr]     |
[INFO] [stderr] 101 | impl<T> Show for HashSet<T>
[INFO] [stderr]     |                  ^^^^^^^^^^
[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] 101 | impl<T, S: ::std::hash::BuildHasher> Show for HashSet<T, S>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the HashSet
[INFO] [stderr]    --> src/show.rs:105:26
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let shown = self.into_iter()
[INFO] [stderr]     |                          ^^^^^^^^^ help: call directly: `iter`
[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: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/show.rs:112:21
[INFO] [stderr]     |
[INFO] [stderr] 112 | impl<K, V> Show for HashMap<K, V>
[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] 112 | impl<K, V, S: ::std::hash::BuildHasher> Show for HashMap<K, V, S>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^          ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this .into_iter() call is equivalent to .iter() and will not move the HashMap
[INFO] [stderr]    --> src/show.rs:117:26
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let shown = self.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: this let-binding has unit value. Consider omitting `let i =`
[INFO] [stderr]    --> src/show.rs:258:9
[INFO] [stderr]     |
[INFO] [stderr] 258 |         let i = ();
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> src/show.rs:259:20
[INFO] [stderr]     |
[INFO] [stderr] 259 |         assert_eq!(i.show(), "()")
[INFO] [stderr]     |                    ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 259 |         assert_eq!(().show(), "()")
[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/semigroup.rs:58:34
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn combine_all_option<T>(xs: &Vec<T>) -> Option<T>
[INFO] [stderr]    |                                  ^^^^^^^ help: change this to: `&[T]`
[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: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]    --> src/semigroup.rs:157:23
[INFO] [stderr]     |
[INFO] [stderr] 157 | impl<T> 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] 157 | impl<T, S: ::std::hash::BuildHasher + Default> Semigroup for HashSet<T, S>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^               ^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]     |
[INFO] [stderr] 161 |         let mut h = HashSet::default();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]    --> src/semigroup.rs:172:26
[INFO] [stderr]     |
[INFO] [stderr] 172 | impl<K, V> Semigroup for HashMap<K, V>
[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] 172 | impl<K, V, S: ::std::hash::BuildHasher + Default> Semigroup for HashMap<K, V, S>
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^               ^^^^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let mut h: HashMap<K, V> = HashMap::default();
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]    --> src/semigroup.rs:328:5
[INFO] [stderr]     |
[INFO] [stderr] 328 | /     semigroup_tests! {
[INFO] [stderr] 329 | |         test_i8, 1.combine(&2) => 3, i8
[INFO] [stderr] 330 | |         test_product_i8, Product(1).combine(&Product(2)) => Product(2), Product<i8>
[INFO] [stderr] 331 | |         test_i16, 1.combine(&2) => 3, i16
[INFO] [stderr] ...   |
[INFO] [stderr] 342 | |         test_option_i16_none2, Some(2).combine(&None) => Some(2), Option<i16>
[INFO] [stderr] 343 | |     }
[INFO] [stderr]     | |_____^ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::float_cmp)] on by default
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]    --> src/semigroup.rs:328:5
[INFO] [stderr]     |
[INFO] [stderr] 328 | /     semigroup_tests! {
[INFO] [stderr] 329 | |         test_i8, 1.combine(&2) => 3, i8
[INFO] [stderr] 330 | |         test_product_i8, Product(1).combine(&Product(2)) => Product(2), Product<i8>
[INFO] [stderr] 331 | |         test_i16, 1.combine(&2) => 3, i16
[INFO] [stderr] ...   |
[INFO] [stderr] 342 | |         test_option_i16_none2, Some(2).combine(&None) => Some(2), Option<i16>
[INFO] [stderr] 343 | |     }
[INFO] [stderr]     | |_____^ in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]    --> src/semigroup.rs:328:5
[INFO] [stderr]     |
[INFO] [stderr] 328 | /     semigroup_tests! {
[INFO] [stderr] 329 | |         test_i8, 1.combine(&2) => 3, i8
[INFO] [stderr] 330 | |         test_product_i8, Product(1).combine(&Product(2)) => Product(2), Product<i8>
[INFO] [stderr] 331 | |         test_i16, 1.combine(&2) => 3, i16
[INFO] [stderr] ...   |
[INFO] [stderr] 342 | |         test_option_i16_none2, Some(2).combine(&None) => Some(2), Option<i16>
[INFO] [stderr] 343 | |     }
[INFO] [stderr]     | |_____^ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]    --> src/semigroup.rs:328:5
[INFO] [stderr]     |
[INFO] [stderr] 328 | /     semigroup_tests! {
[INFO] [stderr] 329 | |         test_i8, 1.combine(&2) => 3, i8
[INFO] [stderr] 330 | |         test_product_i8, Product(1).combine(&Product(2)) => Product(2), Product<i8>
[INFO] [stderr] 331 | |         test_i16, 1.combine(&2) => 3, i16
[INFO] [stderr] ...   |
[INFO] [stderr] 342 | |         test_option_i16_none2, Some(2).combine(&None) => Some(2), Option<i16>
[INFO] [stderr] 343 | |     }
[INFO] [stderr]     | |_____^ in this macro invocation
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[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/monoid.rs:33:27
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn combine_all<T>(xs: &Vec<T>) -> T
[INFO] [stderr]    |                           ^^^^^^^ help: change this to: `&[T]`
[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: impl for `HashSet` should be generalized over different hashers
[INFO] [stderr]   --> src/monoid.rs:65:20
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl<T> 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] 65 | impl<T, S: ::std::hash::BuildHasher + Default> Monoid for HashSet<T, S>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^            ^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 69 |         HashSet::default()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/monoid.rs:73:23
[INFO] [stderr]    |
[INFO] [stderr] 73 | impl<K, V> Monoid for HashMap<K, V>
[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] 73 | impl<K, V, S: ::std::hash::BuildHasher + Default> Monoid for HashMap<K, V, S>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^            ^^^^^^^^^^^^^^^^
[INFO] [stderr] help: ...and use generic constructor
[INFO] [stderr]    |
[INFO] [stderr] 78 |         HashMap::default()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `frust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8a779ca0611c49ae095556b6c94d897885c8860270cb4c34c7fc2ff491d9f235"`
[INFO] running `"docker" "rm" "-f" "8a779ca0611c49ae095556b6c94d897885c8860270cb4c34c7fc2ff491d9f235"`
[INFO] [stdout] 8a779ca0611c49ae095556b6c94d897885c8860270cb4c34c7fc2ff491d9f235