[INFO] updating cached repository danieldk/conllx-utils
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/danieldk/conllx-utils
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/danieldk/conllx-utils" "work/ex/clippy-test-run/sources/stable/gh/danieldk/conllx-utils"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/danieldk/conllx-utils'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/danieldk/conllx-utils" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/danieldk/conllx-utils"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/danieldk/conllx-utils'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0e7e027228bf2f9465e5a4041c9853af735cc16d
[INFO] sha for GitHub repo danieldk/conllx-utils: 0e7e027228bf2f9465e5a4041c9853af735cc16d
[INFO] validating manifest of danieldk/conllx-utils 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 danieldk/conllx-utils 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 danieldk/conllx-utils
[INFO] finished frobbing danieldk/conllx-utils
[INFO] frobbed toml for danieldk/conllx-utils written to work/ex/clippy-test-run/sources/stable/gh/danieldk/conllx-utils/Cargo.toml
[INFO] started frobbing danieldk/conllx-utils
[INFO] finished frobbing danieldk/conllx-utils
[INFO] frobbed toml for danieldk/conllx-utils written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/danieldk/conllx-utils/Cargo.toml
[INFO] crate danieldk/conllx-utils 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 danieldk/conllx-utils against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/danieldk/conllx-utils:/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] 052d7e2de8ec74161693183bea2334a5283669520dedadd1892dd019be92446e
[INFO] running `"docker" "start" "-a" "052d7e2de8ec74161693183bea2334a5283669520dedadd1892dd019be92446e"`
[INFO] [stderr]     Checking maplit v0.1.6
[INFO] [stderr]     Checking stdinout v0.4.0
[INFO] [stderr]     Checking itertools v0.6.5
[INFO] [stderr]     Checking pretty_assertions v0.3.4
[INFO] [stderr]     Checking reservoir v0.2.0
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking conllx v0.10.2
[INFO] [stderr]     Checking conllx-utils v0.4.2 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/graph.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 token: token,
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: replace it with: `token`
[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/graph.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 offset: offset,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^ help: replace it with: `offset`
[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/graph.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 token: token,
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: replace it with: `token`
[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/graph.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 offset: offset,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^ help: replace it with: `offset`
[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/tdz_morph.rs:30:29
[INFO] [stderr]    |
[INFO] [stderr] 30 | const UNDERSPECIFIED_LONG: &'static str = "underspecified";
[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/tdz_morph.rs:30:29
[INFO] [stderr]    |
[INFO] [stderr] 30 | const UNDERSPECIFIED_LONG: &'static str = "underspecified";
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/graph.rs:14:36
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn sentence_to_graph(sentence: &Sentence, projective: bool) -> DependencyGraph {
[INFO] [stderr]    |                                    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/pp_reattach.rs:60:33
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn find_reattachments(sentence: &Sentence) -> Vec<(usize, usize)> {
[INFO] [stderr]    |                                 ^^^^^^^^^
[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]   --> src/graph.rs:14:36
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn sentence_to_graph(sentence: &Sentence, projective: bool) -> DependencyGraph {
[INFO] [stderr]    |                                    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/pp_reattach.rs:60:33
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn find_reattachments(sentence: &Sentence) -> Vec<(usize, usize)> {
[INFO] [stderr]    |                                 ^^^^^^^^^
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/conllx-triples.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 | /             writeln!(
[INFO] [stderr] 65 | |                 writer,
[INFO] [stderr] 66 | |                 "{}\t{}\t{}\t{}\t{}",
[INFO] [stderr] 67 | |                 head,
[INFO] [stderr] ...  |
[INFO] [stderr] 71 | |                 dep.form()
[INFO] [stderr] 72 | |             );
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[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: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/bin/conllx-text.rs:71:59
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 .map(|t| callback(t).map(Cow::into_owned).unwrap_or("_".to_owned()))
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "_".to_owned())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[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/bin/conllx-merge.rs:45:61
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn copy_sents<W>(writer: &mut conllx::Writer<W>, filenames: &Vec<String>)
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^ help: change this to: `&[String]`
[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: redundant closure found
[INFO] [stderr]   --> src/bin/conllx-sample.rs:66:32
[INFO] [stderr]    |
[INFO] [stderr] 66 |         reader.sentences().map(|s| or_exit(s)),
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^ help: remove closure as shown: `or_exit`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[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/bin/conllx-merge.rs:45:61
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn copy_sents<W>(writer: &mut conllx::Writer<W>, filenames: &Vec<String>)
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^ help: change this to: `&[String]`
[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: length comparison to zero
[INFO] [stderr]   --> src/bin/conllx-grep.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 |     if matches.free.len() == 0 || matches.free.len() > 3 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `matches.free.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a call to `new`
[INFO] [stderr]   --> src/bin/conllx-grep.rs:85:36
[INFO] [stderr]    |
[INFO] [stderr] 85 |                   let mut features = sentence[idx]
[INFO] [stderr]    |  ____________________________________^
[INFO] [stderr] 86 | |                     .features()
[INFO] [stderr] 87 | |                     .map(|f| f.as_map().clone())
[INFO] [stderr] 88 | |                     .unwrap_or(BTreeMap::new());
[INFO] [stderr]    | |_______________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 let mut features = sentence[idx]
[INFO] [stderr] 86 |                     .features()
[INFO] [stderr] 87 |                     .map(|f| f.as_map().clone()).unwrap_or_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/bin/conllx-grep.rs:98:66
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn match_indexes(re: &Regex, callback: &LayerCallback, sentence: &Sentence) -> HashSet<usize> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/bin/conllx-grep.rs:98:40
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn match_indexes(re: &Regex, callback: &LayerCallback, sentence: &Sentence) -> HashSet<usize> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^ help: consider passing by value instead: `LayerCallback`
[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: redundant closure found
[INFO] [stderr]   --> src/bin/conllx-sample.rs:66:32
[INFO] [stderr]    |
[INFO] [stderr] 66 |         reader.sentences().map(|s| or_exit(s)),
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^ help: remove closure as shown: `or_exit`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/bin/conllx-grep.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 |     if matches.free.len() == 0 || matches.free.len() > 3 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `matches.free.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a call to `new`
[INFO] [stderr]   --> src/bin/conllx-grep.rs:85:36
[INFO] [stderr]    |
[INFO] [stderr] 85 |                   let mut features = sentence[idx]
[INFO] [stderr]    |  ____________________________________^
[INFO] [stderr] 86 | |                     .features()
[INFO] [stderr] 87 | |                     .map(|f| f.as_map().clone())
[INFO] [stderr] 88 | |                     .unwrap_or(BTreeMap::new());
[INFO] [stderr]    | |_______________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 let mut features = sentence[idx]
[INFO] [stderr] 86 |                     .features()
[INFO] [stderr] 87 |                     .map(|f| f.as_map().clone()).unwrap_or_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/bin/conllx-grep.rs:98:66
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn match_indexes(re: &Regex, callback: &LayerCallback, sentence: &Sentence) -> HashSet<usize> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/bin/conllx-grep.rs:98:40
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn match_indexes(re: &Regex, callback: &LayerCallback, sentence: &Sentence) -> HashSet<usize> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^ help: consider passing by value instead: `LayerCallback`
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/conllx-triples.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 | /             writeln!(
[INFO] [stderr] 65 | |                 writer,
[INFO] [stderr] 66 | |                 "{}\t{}\t{}\t{}\t{}",
[INFO] [stderr] 67 | |                 head,
[INFO] [stderr] ...  |
[INFO] [stderr] 71 | |                 dep.form()
[INFO] [stderr] 72 | |             );
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[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/bin/conllx-cycle.rs:51:27
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn check_cycles(sentence: &Sentence, projective: bool) {
[INFO] [stderr]    |                           ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/bin/conllx-cycle.rs:51:27
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn check_cycles(sentence: &Sentence, projective: bool) {
[INFO] [stderr]    |                           ^^^^^^^^^
[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: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/bin/conllx-text.rs:71:59
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 .map(|t| callback(t).map(Cow::into_owned).unwrap_or("_".to_owned()))
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "_".to_owned())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.85s
[INFO] running `"docker" "inspect" "052d7e2de8ec74161693183bea2334a5283669520dedadd1892dd019be92446e"`
[INFO] running `"docker" "rm" "-f" "052d7e2de8ec74161693183bea2334a5283669520dedadd1892dd019be92446e"`
[INFO] [stdout] 052d7e2de8ec74161693183bea2334a5283669520dedadd1892dd019be92446e