[INFO] crate spectral 0.6.0 is already in cache
[INFO] extracting crate spectral 0.6.0 into work/ex/clippy-test-run/sources/stable/reg/spectral/0.6.0
[INFO] extracting crate spectral 0.6.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/spectral/0.6.0
[INFO] validating manifest of spectral-0.6.0 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 spectral-0.6.0 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 spectral-0.6.0
[INFO] finished frobbing spectral-0.6.0
[INFO] frobbed toml for spectral-0.6.0 written to work/ex/clippy-test-run/sources/stable/reg/spectral/0.6.0/Cargo.toml
[INFO] started frobbing spectral-0.6.0
[INFO] finished frobbing spectral-0.6.0
[INFO] frobbed toml for spectral-0.6.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/spectral/0.6.0/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 spectral-0.6.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/spectral/0.6.0:/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" "-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] 4b2750f0d2aa3c50b4f533617e2009e313925c825a1ef7724522f9f9071122b5
[INFO] running `"docker" "start" "-a" "4b2750f0d2aa3c50b4f533617e2009e313925c825a1ef7724522f9f9071122b5"`
[INFO] [stderr]     Checking spectral v0.6.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/lib.rs:258:9
[INFO] [stderr]     |
[INFO] [stderr] 258 |         subject: subject,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: replace it with: `subject`
[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/lib.rs:284:13
[INFO] [stderr]     |
[INFO] [stderr] 284 |             subject: subject,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: replace it with: `subject`
[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/lib.rs:310:13
[INFO] [stderr]     |
[INFO] [stderr] 310 |             spec: spec,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `spec`
[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/lib.rs:258:9
[INFO] [stderr]     |
[INFO] [stderr] 258 |         subject: subject,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: replace it with: `subject`
[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/lib.rs:284:13
[INFO] [stderr]     |
[INFO] [stderr] 284 |             subject: subject,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: replace it with: `subject`
[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/lib.rs:310:13
[INFO] [stderr]     |
[INFO] [stderr] 310 |             spec: spec,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `spec`
[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: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/lib.rs:163:26
[INFO] [stderr]     |
[INFO] [stderr] 163 |     pub const TERM_RED: &'static str = "\x1B[31m";
[INFO] [stderr]     |                         -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/lib.rs:164:27
[INFO] [stderr]     |
[INFO] [stderr] 164 |     pub const TERM_BOLD: &'static str = "\x1B[1m";
[INFO] [stderr]     |                          -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/lib.rs:165:28
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub const TERM_RESET: &'static str = "\x1B[0m";
[INFO] [stderr]     |                           -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/lib.rs:170:26
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub const TERM_RED: &'static str = "";
[INFO] [stderr]     |                         -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/lib.rs:171:27
[INFO] [stderr]     |
[INFO] [stderr] 171 |     pub const TERM_BOLD: &'static str = "";
[INFO] [stderr]     |                          -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> src/lib.rs:172:28
[INFO] [stderr]     |
[INFO] [stderr] 172 |     pub const TERM_RESET: &'static str = "";
[INFO] [stderr]     |                           -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:524:17
[INFO] [stderr]     |
[INFO] [stderr] 524 |                 return (self.x1 - self.x0).abs();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(self.x1 - self.x0).abs()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:318:13
[INFO] [stderr]     |
[INFO] [stderr] 318 |         let mut assertion = self;
[INFO] [stderr]     |             ----^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:326:13
[INFO] [stderr]     |
[INFO] [stderr] 326 |         let mut assertion = self;
[INFO] [stderr]     |             ----^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/boolean.rs:17:32
[INFO] [stderr]    |
[INFO] [stderr] 17 |                 .with_expected(format!("bool to be <true>"))
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"bool to be <true>".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/boolean.rs:18:30
[INFO] [stderr]    |
[INFO] [stderr] 18 |                 .with_actual(format!("<false>"))
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"<false>".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/boolean.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 .with_expected(format!("bool to be <false>"))
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"bool to be <false>".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/boolean.rs:32:30
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 .with_actual(format!("<true>"))
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"<true>".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/hashmap.rs:19:57
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl<'s, K, V> HashMapAssertions<'s, K, V> for Spec<'s, HashMap<K, V>>
[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] 19 | impl<'s, K, V, S: ::std::hash::BuildHasher> HashMapAssertions<'s, K, V> for Spec<'s, HashMap<K, V, S>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                          ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/hashmap.rs:55:32
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 .with_expected(format!("an empty hashmap"))
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"an empty hashmap".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/hashmap.rs:111:30
[INFO] [stderr]     |
[INFO] [stderr] 111 |                 .with_actual(format!("present in hashmap"))
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"present in hashmap".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/hashmap.rs:183:30
[INFO] [stderr]     |
[INFO] [stderr] 183 |                 .with_actual(format!("present in hashmap"))
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"present in hashmap".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/option.rs:45:34
[INFO] [stderr]    |
[INFO] [stderr] 45 |                     .with_actual(format!("option[none]"))
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"option[none]".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/option.rs:74:36
[INFO] [stderr]    |
[INFO] [stderr] 74 |                     .with_expected(format!("option[some]"))
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"option[some]".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/option.rs:75:34
[INFO] [stderr]    |
[INFO] [stderr] 75 |                     .with_actual(format!("option[none]"))
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"option[none]".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/option.rs:93:36
[INFO] [stderr]    |
[INFO] [stderr] 93 |                     .with_expected(format!("option[none]"))
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"option[none]".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:113:26
[INFO] [stderr]     |
[INFO] [stderr] 113 |             .with_actual(format!("a non-existent Path"))
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"a non-existent Path".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:122:26
[INFO] [stderr]     |
[INFO] [stderr] 122 |             .with_actual(format!("a resolvable Path"))
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"a resolvable Path".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:131:26
[INFO] [stderr]     |
[INFO] [stderr] 131 |             .with_actual(format!("not a resolvable file"))
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"not a resolvable file".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:140:26
[INFO] [stderr]     |
[INFO] [stderr] 140 |             .with_actual(format!("not a resolvable directory"))
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"not a resolvable directory".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:152:67
[INFO] [stderr]     |
[INFO] [stderr] 152 |                     fail_from_file_name(spec, expected_file_name, format!("an invalid UTF-8 file name"));
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"an invalid UTF-8 file name".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/result.rs:112:36
[INFO] [stderr]     |
[INFO] [stderr] 112 |                     .with_expected(format!("result[ok]"))
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"result[ok]".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/result.rs:140:36
[INFO] [stderr]     |
[INFO] [stderr] 140 |                     .with_expected(format!("result[error]"))
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"result[error]".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/vec.rs:36:32
[INFO] [stderr]    |
[INFO] [stderr] 36 |                 .with_expected(format!("an empty vec"))
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"an empty vec".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/lib.rs:256:1
[INFO] [stderr]     |
[INFO] [stderr] 256 | / pub fn assert_that<'s, S>(subject: &'s S) -> Spec<'s, S> {
[INFO] [stderr] 257 | |     Spec {
[INFO] [stderr] 258 | |         subject: subject,
[INFO] [stderr] 259 | |         subject_name: None,
[INFO] [stderr] ...   |
[INFO] [stderr] 262 | |     }
[INFO] [stderr] 263 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]    --> src/lib.rs:335:12
[INFO] [stderr]     |
[INFO] [stderr] 335 |         if !self.expected.is_some() || !self.actual.is_some() {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.expected.is_none() || self.actual.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `is_*` usually take self by reference or no self; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/lib.rs:423:38
[INFO] [stderr]     |
[INFO] [stderr] 423 |     pub fn is_equal_to<E: Borrow<S>>(&mut self, expected: E) {
[INFO] [stderr]     |                                      ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `is_*` usually take self by reference or no self; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/lib.rs:441:42
[INFO] [stderr]     |
[INFO] [stderr] 441 |     pub fn is_not_equal_to<E: Borrow<S>>(&mut self, expected: E) {
[INFO] [stderr]     |                                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib.rs:448:30
[INFO] [stderr]     |
[INFO] [stderr] 448 |                 .with_actual(format!("equal"))
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"equal".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:318:13
[INFO] [stderr]     |
[INFO] [stderr] 318 |         let mut assertion = self;
[INFO] [stderr]     |             ----^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:326:13
[INFO] [stderr]     |
[INFO] [stderr] 326 |         let mut assertion = self;
[INFO] [stderr]     |             ----^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/boolean.rs:17:32
[INFO] [stderr]    |
[INFO] [stderr] 17 |                 .with_expected(format!("bool to be <true>"))
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"bool to be <true>".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/boolean.rs:18:30
[INFO] [stderr]    |
[INFO] [stderr] 18 |                 .with_actual(format!("<false>"))
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"<false>".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/boolean.rs:31:32
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 .with_expected(format!("bool to be <false>"))
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"bool to be <false>".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/boolean.rs:32:30
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 .with_actual(format!("<true>"))
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"<true>".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: impl for `HashMap` should be generalized over different hashers
[INFO] [stderr]   --> src/hashmap.rs:19:57
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl<'s, K, V> HashMapAssertions<'s, K, V> for Spec<'s, HashMap<K, V>>
[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] 19 | impl<'s, K, V, S: ::std::hash::BuildHasher> HashMapAssertions<'s, K, V> for Spec<'s, HashMap<K, V, S>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                                          ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/hashmap.rs:55:32
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 .with_expected(format!("an empty hashmap"))
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"an empty hashmap".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/hashmap.rs:111:30
[INFO] [stderr]     |
[INFO] [stderr] 111 |                 .with_actual(format!("present in hashmap"))
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"present in hashmap".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/hashmap.rs:183:30
[INFO] [stderr]     |
[INFO] [stderr] 183 |                 .with_actual(format!("present in hashmap"))
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"present in hashmap".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/option.rs:45:34
[INFO] [stderr]    |
[INFO] [stderr] 45 |                     .with_actual(format!("option[none]"))
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"option[none]".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/option.rs:74:36
[INFO] [stderr]    |
[INFO] [stderr] 74 |                     .with_expected(format!("option[some]"))
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"option[some]".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/option.rs:75:34
[INFO] [stderr]    |
[INFO] [stderr] 75 |                     .with_actual(format!("option[none]"))
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"option[none]".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/option.rs:93:36
[INFO] [stderr]    |
[INFO] [stderr] 93 |                     .with_expected(format!("option[none]"))
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"option[none]".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:113:26
[INFO] [stderr]     |
[INFO] [stderr] 113 |             .with_actual(format!("a non-existent Path"))
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"a non-existent Path".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:122:26
[INFO] [stderr]     |
[INFO] [stderr] 122 |             .with_actual(format!("a resolvable Path"))
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"a resolvable Path".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:131:26
[INFO] [stderr]     |
[INFO] [stderr] 131 |             .with_actual(format!("not a resolvable file"))
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"not a resolvable file".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:140:26
[INFO] [stderr]     |
[INFO] [stderr] 140 |             .with_actual(format!("not a resolvable directory"))
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"not a resolvable directory".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/path.rs:152:67
[INFO] [stderr]     |
[INFO] [stderr] 152 |                     fail_from_file_name(spec, expected_file_name, format!("an invalid UTF-8 file name"));
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"an invalid UTF-8 file name".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/result.rs:112:36
[INFO] [stderr]     |
[INFO] [stderr] 112 |                     .with_expected(format!("result[ok]"))
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"result[ok]".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/result.rs:140:36
[INFO] [stderr]     |
[INFO] [stderr] 140 |                     .with_expected(format!("result[error]"))
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"result[error]".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/vec.rs:36:32
[INFO] [stderr]    |
[INFO] [stderr] 36 |                 .with_expected(format!("an empty vec"))
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"an empty vec".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/iter.rs:543:13
[INFO] [stderr]     |
[INFO] [stderr] 543 | /             match val {
[INFO] [stderr] 544 | |                 &TestEnum::Good => true,
[INFO] [stderr] 545 | |                 _ => false,
[INFO] [stderr] 546 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 543 |             match *val {
[INFO] [stderr] 544 |                 TestEnum::Good => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/iter.rs:559:13
[INFO] [stderr]     |
[INFO] [stderr] 559 | /             match val {
[INFO] [stderr] 560 | |                 &TestEnum::Good => true,
[INFO] [stderr] 561 | |                 _ => false,
[INFO] [stderr] 562 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 559 |             match *val {
[INFO] [stderr] 560 |                 TestEnum::Good => true,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/lib.rs:256:1
[INFO] [stderr]     |
[INFO] [stderr] 256 | / pub fn assert_that<'s, S>(subject: &'s S) -> Spec<'s, S> {
[INFO] [stderr] 257 | |     Spec {
[INFO] [stderr] 258 | |         subject: subject,
[INFO] [stderr] 259 | |         subject_name: None,
[INFO] [stderr] ...   |
[INFO] [stderr] 262 | |     }
[INFO] [stderr] 263 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]    --> src/lib.rs:335:12
[INFO] [stderr]     |
[INFO] [stderr] 335 |         if !self.expected.is_some() || !self.actual.is_some() {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.expected.is_none() || self.actual.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `is_*` usually take self by reference or no self; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/lib.rs:423:38
[INFO] [stderr]     |
[INFO] [stderr] 423 |     pub fn is_equal_to<E: Borrow<S>>(&mut self, expected: E) {
[INFO] [stderr]     |                                      ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `is_*` usually take self by reference or no self; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/lib.rs:441:42
[INFO] [stderr]     |
[INFO] [stderr] 441 |     pub fn is_not_equal_to<E: Borrow<S>>(&mut self, expected: E) {
[INFO] [stderr]     |                                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib.rs:448:30
[INFO] [stderr]     |
[INFO] [stderr] 448 |                 .with_actual(format!("equal"))
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"equal".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.24s
[INFO] running `"docker" "inspect" "4b2750f0d2aa3c50b4f533617e2009e313925c825a1ef7724522f9f9071122b5"`
[INFO] running `"docker" "rm" "-f" "4b2750f0d2aa3c50b4f533617e2009e313925c825a1ef7724522f9f9071122b5"`
[INFO] [stdout] 4b2750f0d2aa3c50b4f533617e2009e313925c825a1ef7724522f9f9071122b5