[INFO] crate must 0.2.0 is already in cache
[INFO] extracting crate must 0.2.0 into work/ex/clippy-test-run/sources/stable/reg/must/0.2.0
[INFO] extracting crate must 0.2.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/must/0.2.0
[INFO] validating manifest of must-0.2.0 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 must-0.2.0 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 must-0.2.0
[INFO] finished frobbing must-0.2.0
[INFO] frobbed toml for must-0.2.0 written to work/ex/clippy-test-run/sources/stable/reg/must/0.2.0/Cargo.toml
[INFO] started frobbing must-0.2.0
[INFO] finished frobbing must-0.2.0
[INFO] frobbed toml for must-0.2.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/must/0.2.0/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 must-0.2.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/must/0.2.0:/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] 4bc2215e35e3da0da06adde5eed0e21d67dff2f28807b435bcd727742f3e63a0
[INFO] running `"docker" "start" "-a" "4bc2215e35e3da0da06adde5eed0e21d67dff2f28807b435bcd727742f3e63a0"`
[INFO] [stderr]     Checking mutator v0.1.0
[INFO] [stderr]     Checking must v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/errors.rs:106:4
[INFO] [stderr]     |
[INFO] [stderr] 106 |             got: got,
[INFO] [stderr]     |             ^^^^^^^^ help: replace it with: `got`
[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/lazy.rs:123:18
[INFO] [stderr]     |
[INFO] [stderr] 123 |     SimpleMatcher { result: result }.into()
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^ help: replace it with: `result`
[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/lazy.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |                 got: got,
[INFO] [stderr]     |                 ^^^^^^^^ help: replace it with: `got`
[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: using `writeln!(f, "")`
[INFO] [stderr]   --> src/error_renderer.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |         writeln!(f, "")?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: replace it with: `writeln!(f)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::writeln_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#writeln_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `writeln!(f, "")`
[INFO] [stderr]   --> src/error_renderer.rs:66:3
[INFO] [stderr]    |
[INFO] [stderr] 66 |         writeln!(f, "")?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: replace it with: `writeln!(f)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#writeln_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/matchers/collections.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |             ErrorKind::MustHaveLength { len: len }.but_got(self.len())
[INFO] [stderr]    |                                         ^^^^^^^^ help: replace it with: `len`
[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/errors.rs:106:4
[INFO] [stderr]     |
[INFO] [stderr] 106 |             got: got,
[INFO] [stderr]     |             ^^^^^^^^ help: replace it with: `got`
[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/lazy.rs:123:18
[INFO] [stderr]     |
[INFO] [stderr] 123 |     SimpleMatcher { result: result }.into()
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^ help: replace it with: `result`
[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/lazy.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |                 got: got,
[INFO] [stderr]     |                 ^^^^^^^^ help: replace it with: `got`
[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: using `writeln!(f, "")`
[INFO] [stderr]   --> src/error_renderer.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |         writeln!(f, "")?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: replace it with: `writeln!(f)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::writeln_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#writeln_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `writeln!(f, "")`
[INFO] [stderr]   --> src/error_renderer.rs:66:3
[INFO] [stderr]    |
[INFO] [stderr] 66 |         writeln!(f, "")?;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: replace it with: `writeln!(f)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#writeln_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/matchers/collections.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |             ErrorKind::MustHaveLength { len: len }.but_got(self.len())
[INFO] [stderr]    |                                         ^^^^^^^^ help: replace it with: `len`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/matchers/num.rs:68:2
[INFO] [stderr]    |
[INFO] [stderr] 68 |     close
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/matchers/num.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 | /             a == b
[INFO] [stderr] 61 | |             // a or b is zero or both are extremely close to it
[INFO] [stderr] 62 | |             // relative error is less meaningful here
[INFO] [stderr] 63 | |             || ((a == Zero::zero() || b == Zero::zero() || d < Float::min_positive_value()) &&
[INFO] [stderr] 64 | |                 d < (epsilon * Float::min_positive_value()))
[INFO] [stderr] 65 | |             // use relative error
[INFO] [stderr] 66 | |             || d / (a + b).min(Float::max_value()) < epsilon;
[INFO] [stderr]    | |____________________________________________________________^
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/matchers/num.rs:68:2
[INFO] [stderr]    |
[INFO] [stderr] 68 |     close
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/matchers/num.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 | /             a == b
[INFO] [stderr] 61 | |             // a or b is zero or both are extremely close to it
[INFO] [stderr] 62 | |             // relative error is less meaningful here
[INFO] [stderr] 63 | |             || ((a == Zero::zero() || b == Zero::zero() || d < Float::min_positive_value()) &&
[INFO] [stderr] 64 | |                 d < (epsilon * Float::min_positive_value()))
[INFO] [stderr] 65 | |             // use relative error
[INFO] [stderr] 66 | |             || d / (a + b).min(Float::max_value()) < epsilon;
[INFO] [stderr]    | |____________________________________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]  --> src/matchers/text.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ascii::AsciiExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]   --> src/matchers/text.rs:58:40
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub trait MustBeAscii: Sized + Debug + AsciiExt {
[INFO] [stderr]    |                                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]   --> src/matchers/text.rs:76:44
[INFO] [stderr]    |
[INFO] [stderr] 76 | impl<V> MustBeAscii for V where V: Debug + AsciiExt {}
[INFO] [stderr]    |                                            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]  --> src/matchers/text.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ascii::AsciiExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]   --> src/matchers/text.rs:58:40
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub trait MustBeAscii: Sized + Debug + AsciiExt {
[INFO] [stderr]    |                                        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]   --> src/matchers/text.rs:76:44
[INFO] [stderr]    |
[INFO] [stderr] 76 | impl<V> MustBeAscii for V where V: Debug + AsciiExt {}
[INFO] [stderr]    |                                            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt::is_ascii': use inherent methods instead
[INFO] [stderr]   --> src/matchers/text.rs:60:11
[INFO] [stderr]    |
[INFO] [stderr] 60 |         if self.is_ascii() {
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt::eq_ignore_ascii_case': use inherent methods instead
[INFO] [stderr]   --> src/matchers/text.rs:68:11
[INFO] [stderr]    |
[INFO] [stderr] 68 |         if self.eq_ignore_ascii_case(other) {
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt::is_ascii': use inherent methods instead
[INFO] [stderr]   --> src/matchers/text.rs:60:11
[INFO] [stderr]    |
[INFO] [stderr] 60 |         if self.is_ascii() {
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt::eq_ignore_ascii_case': use inherent methods instead
[INFO] [stderr]   --> src/matchers/text.rs:68:11
[INFO] [stderr]    |
[INFO] [stderr] 68 |         if self.eq_ignore_ascii_case(other) {
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/errors.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |           match self {
[INFO] [stderr]    |  _________^
[INFO] [stderr] 49 | |             &MustEq { ref to } => write!(f, "must be {}", to),
[INFO] [stderr] 50 | |             &MustNotEq { ref to } => write!(f, "must not be {}", to),
[INFO] [stderr] 51 | |             &MustBeOk => write!(f, "must be ok"),
[INFO] [stderr] ...  |
[INFO] [stderr] 77 | |             &Error(ref err) => write!(f, "{}", err.description()),
[INFO] [stderr] 78 | |         }
[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] 48 |         match *self {
[INFO] [stderr] 49 |             MustEq { ref to } => write!(f, "must be {}", to),
[INFO] [stderr] 50 |             MustNotEq { ref to } => write!(f, "must not be {}", to),
[INFO] [stderr] 51 |             MustBeOk => write!(f, "must be ok"),
[INFO] [stderr] 52 |             MustBeErr => write!(f, "must be err"),
[INFO] [stderr] 53 |             MustBeSome => write!(f, "must be some"),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lazy.rs:134:3
[INFO] [stderr]     |
[INFO] [stderr] 134 |           matched(Err(Error {
[INFO] [stderr]     |  _________^
[INFO] [stderr] 135 | |                 got: got,
[INFO] [stderr] 136 | |                 kind: err,
[INFO] [stderr] 137 | |             }))
[INFO] [stderr] 138 | |             .into()
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] help: consider removing `.into()`
[INFO] [stderr]     |
[INFO] [stderr] 134 |         matched(Err(Error {
[INFO] [stderr] 135 |                 got: got,
[INFO] [stderr] 136 |                 kind: err,
[INFO] [stderr] 137 |             }))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lazy.rs:204:15
[INFO] [stderr]     |
[INFO] [stderr] 204 |             Ok(val) => op(val).into(),
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^ help: consider removing `.into()`: `op(val)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: trait `HasLength` has a `len` method but no (possibly inherited) `is_empty` method
[INFO] [stderr]  --> src/marker/collections.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | / pub trait HasLength {
[INFO] [stderr] 3 | |     fn len(&self) -> usize;
[INFO] [stderr] 4 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
[INFO] [stderr]   --> src/error_renderer.rs:51:21
[INFO] [stderr]    |
[INFO] [stderr] 51 |               if let Ok(buf) = BufReader::new(File::open(&file_path).unwrap())
[INFO] [stderr]    |  ______________________________^
[INFO] [stderr] 52 | |                 .lines()
[INFO] [stderr] 53 | |                 .skip(line as usize - 1)
[INFO] [stderr] 54 | |                 .next()
[INFO] [stderr]    | |_______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::iter_skip_next)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/errors.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |           match self {
[INFO] [stderr]    |  _________^
[INFO] [stderr] 49 | |             &MustEq { ref to } => write!(f, "must be {}", to),
[INFO] [stderr] 50 | |             &MustNotEq { ref to } => write!(f, "must not be {}", to),
[INFO] [stderr] 51 | |             &MustBeOk => write!(f, "must be ok"),
[INFO] [stderr] ...  |
[INFO] [stderr] 77 | |             &Error(ref err) => write!(f, "{}", err.description()),
[INFO] [stderr] 78 | |         }
[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] 48 |         match *self {
[INFO] [stderr] 49 |             MustEq { ref to } => write!(f, "must be {}", to),
[INFO] [stderr] 50 |             MustNotEq { ref to } => write!(f, "must not be {}", to),
[INFO] [stderr] 51 |             MustBeOk => write!(f, "must be ok"),
[INFO] [stderr] 52 |             MustBeErr => write!(f, "must be err"),
[INFO] [stderr] 53 |             MustBeSome => write!(f, "must be some"),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lazy.rs:134:3
[INFO] [stderr]     |
[INFO] [stderr] 134 |           matched(Err(Error {
[INFO] [stderr]     |  _________^
[INFO] [stderr] 135 | |                 got: got,
[INFO] [stderr] 136 | |                 kind: err,
[INFO] [stderr] 137 | |             }))
[INFO] [stderr] 138 | |             .into()
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] help: consider removing `.into()`
[INFO] [stderr]     |
[INFO] [stderr] 134 |         matched(Err(Error {
[INFO] [stderr] 135 |                 got: got,
[INFO] [stderr] 136 |                 kind: err,
[INFO] [stderr] 137 |             }))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]    --> src/lazy.rs:204:15
[INFO] [stderr]     |
[INFO] [stderr] 204 |             Ok(val) => op(val).into(),
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^ help: consider removing `.into()`: `op(val)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: trait `HasLength` has a `len` method but no (possibly inherited) `is_empty` method
[INFO] [stderr]  --> src/marker/collections.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | / pub trait HasLength {
[INFO] [stderr] 3 | |     fn len(&self) -> usize;
[INFO] [stderr] 4 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
[INFO] [stderr]   --> src/error_renderer.rs:51:21
[INFO] [stderr]    |
[INFO] [stderr] 51 |               if let Ok(buf) = BufReader::new(File::open(&file_path).unwrap())
[INFO] [stderr]    |  ______________________________^
[INFO] [stderr] 52 | |                 .lines()
[INFO] [stderr] 53 | |                 .skip(line as usize - 1)
[INFO] [stderr] 54 | |                 .next()
[INFO] [stderr]    | |_______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::iter_skip_next)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.50s
[INFO] running `"docker" "inspect" "4bc2215e35e3da0da06adde5eed0e21d67dff2f28807b435bcd727742f3e63a0"`
[INFO] running `"docker" "rm" "-f" "4bc2215e35e3da0da06adde5eed0e21d67dff2f28807b435bcd727742f3e63a0"`
[INFO] [stdout] 4bc2215e35e3da0da06adde5eed0e21d67dff2f28807b435bcd727742f3e63a0