[INFO] crate codemap-diagnostic 0.1.0 is already in cache
[INFO] extracting crate codemap-diagnostic 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/codemap-diagnostic/0.1.0
[INFO] extracting crate codemap-diagnostic 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/codemap-diagnostic/0.1.0
[INFO] validating manifest of codemap-diagnostic-0.1.0 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 codemap-diagnostic-0.1.0 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 codemap-diagnostic-0.1.0
[INFO] finished frobbing codemap-diagnostic-0.1.0
[INFO] frobbed toml for codemap-diagnostic-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/codemap-diagnostic/0.1.0/Cargo.toml
[INFO] started frobbing codemap-diagnostic-0.1.0
[INFO] finished frobbing codemap-diagnostic-0.1.0
[INFO] frobbed toml for codemap-diagnostic-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/codemap-diagnostic/0.1.0/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 codemap-diagnostic-0.1.0 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/reg/codemap-diagnostic/0.1.0:/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] 3f5c676a3d4601daacabe93f1595e5b3ef67ae7d299388f1f2e75983244be54b
[INFO] running `"docker" "start" "-a" "3f5c676a3d4601daacabe93f1595e5b3ef67ae7d299388f1f2e75983244be54b"`
[INFO] [stderr]     Checking codemap-diagnostic v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/emitter.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 dst: dst,
[INFO] [stderr]    |                 ^^^^^^^^ help: replace it with: `dst`
[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/emitter.rs:102:25
[INFO] [stderr]     |
[INFO] [stderr] 102 |                         line_index: line_index,
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `line_index`
[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/emitter.rs:111:17
[INFO] [stderr]     |
[INFO] [stderr] 111 |                 file: file,
[INFO] [stderr]     |                 ^^^^^^^^^^ help: replace it with: `file`
[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 `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/emitter.rs:885:15
[INFO] [stderr]     |
[INFO] [stderr] 885 |         match write!(&mut self.dst, "\n") {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/emitter.rs:972:9
[INFO] [stderr]     |
[INFO] [stderr] 972 |         write!(dst, "\n")?;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/emitter.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 dst: dst,
[INFO] [stderr]    |                 ^^^^^^^^ help: replace it with: `dst`
[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/emitter.rs:102:25
[INFO] [stderr]     |
[INFO] [stderr] 102 |                         line_index: line_index,
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `line_index`
[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/emitter.rs:111:17
[INFO] [stderr]     |
[INFO] [stderr] 111 |                 file: file,
[INFO] [stderr]     |                 ^^^^^^^^^^ help: replace it with: `file`
[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 `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/emitter.rs:885:15
[INFO] [stderr]     |
[INFO] [stderr] 885 |         match write!(&mut self.dst, "\n") {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/emitter.rs:972:9
[INFO] [stderr]     |
[INFO] [stderr] 972 |         write!(dst, "\n")?;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/snippet.rs:160:13
[INFO] [stderr]     |
[INFO] [stderr] 160 |             label.len() > 0
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!label.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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/emitter.rs:38:18
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn use_color(&self) -> bool {
[INFO] [stderr]    |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]   --> src/emitter.rs:85:35
[INFO] [stderr]    |
[INFO] [stderr] 85 |         fn add_annotation_to_file<'a>(file_vec: &mut Vec<FileWithAnnotatedLines>,
[INFO] [stderr]    |                                   ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/emitter.rs:175:21
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 let ref mut a = item.1;
[INFO] [stderr]     |                 ----^^^^^^^^^---------- help: try: `let a = &mut item.1;`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 33
[INFO] [stderr]    --> src/emitter.rs:211:6
[INFO] [stderr]     |
[INFO] [stderr] 211 | /      fn render_source_line(&self,
[INFO] [stderr] 212 | |                           buffer: &mut StyledBuffer,
[INFO] [stderr] 213 | |                           file: &File,
[INFO] [stderr] 214 | |                           line: &Line,
[INFO] [stderr] ...   |
[INFO] [stderr] 598 | |         }).collect::<Vec<_>>()
[INFO] [stderr] 599 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/emitter.rs:412:43
[INFO] [stderr]     |
[INFO] [stderr] 412 |           if line.annotations.is_empty() || line.annotations.iter()
[INFO] [stderr]     |  ___________________________________________^
[INFO] [stderr] 413 | |             .filter(|a| !a.is_line()).collect::<Vec<_>>().len() == 0
[INFO] [stderr]     | |____________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] help: using `is_empty` is clearer and more explicit
[INFO] [stderr]     |
[INFO] [stderr] 412 |         if line.annotations.is_empty() || line.annotations.iter()
[INFO] [stderr] 413 |             .filter(|a| !a.is_line()).collect::<Vec<_>>().is_empty()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: avoid using `collect()` when not needed
[INFO] [stderr]    --> src/emitter.rs:413:38
[INFO] [stderr]     |
[INFO] [stderr] 413 |             .filter(|a| !a.is_line()).collect::<Vec<_>>().len() == 0
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `.count()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_collect)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_collect
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/emitter.rs:429:20
[INFO] [stderr]     |
[INFO] [stderr] 429 |         for pos in 0..line_len + 1 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^ help: use: `0..=line_len`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/emitter.rs:490:26
[INFO] [stderr]     |
[INFO] [stderr] 490 |                 for p in line_offset + 1..line_offset + pos + 1 {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `line_offset + 1..=line_offset + pos`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/emitter.rs:507:30
[INFO] [stderr]     |
[INFO] [stderr] 507 |                     for p in line_offset..line_offset + pos + 1 {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `line_offset..=line_offset + pos`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[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/emitter.rs:615:27
[INFO] [stderr]     |
[INFO] [stderr] 615 |                      msg: &Vec<(String, Style)>,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[(String, Style)]`
[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/emitter.rs:689:34
[INFO] [stderr]     |
[INFO] [stderr] 689 |                             msg: &Vec<(String, Style)>,
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[(String, Style)]`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/emitter.rs:691:36
[INFO] [stderr]     |
[INFO] [stderr] 691 |                             level: &Level,
[INFO] [stderr]     |                                    ^^^^^^ help: consider passing by value instead: `Level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/emitter.rs:697:28
[INFO] [stderr]     |
[INFO] [stderr] 697 |         if is_secondary && spans.len() == 0 {
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `spans.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/emitter.rs:707:63
[INFO] [stderr]     |
[INFO] [stderr] 707 |             buffer.append(0, &level.to_string(), Style::Level(level.clone()));
[INFO] [stderr]     |                                                               ^^^^^^^^^^^^^ help: try dereferencing it: `*level`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/emitter.rs:709:52
[INFO] [stderr]     |
[INFO] [stderr] 709 |                 buffer.append(0, "[", Style::Level(level.clone()));
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^ help: try dereferencing it: `*level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/emitter.rs:710:54
[INFO] [stderr]     |
[INFO] [stderr] 710 |                 buffer.append(0, &code, Style::Level(level.clone()));
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^ help: try dereferencing it: `*level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/emitter.rs:711:52
[INFO] [stderr]     |
[INFO] [stderr] 711 |                 buffer.append(0, "]", Style::Level(level.clone()));
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^ help: try dereferencing it: `*level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/emitter.rs:888:17
[INFO] [stderr]     |
[INFO] [stderr] 888 | /                 match self.dst.flush() {
[INFO] [stderr] 889 | |                     Err(e) => panic!("failed to emit error: {}", e),
[INFO] [stderr] 890 | |                     _ => (),
[INFO] [stderr] 891 | |                 }
[INFO] [stderr]     | |_________________^ help: try this: `if let Err(e) = self.dst.flush() { panic!("failed to emit error: {}", e) }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[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/emitter.rs:947:41
[INFO] [stderr]     |
[INFO] [stderr] 947 | fn emit_to_destination(rendered_buffer: &Vec<Vec<StyledString>>,
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<StyledString>]`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/emitter.rs:948:29
[INFO] [stderr]     |
[INFO] [stderr] 948 |                        lvl: &Level,
[INFO] [stderr]     |                             ^^^^^^ help: consider passing by value instead: `Level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/snippet.rs:160:13
[INFO] [stderr]     |
[INFO] [stderr] 160 |             label.len() > 0
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!label.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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/emitter.rs:38:18
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn use_color(&self) -> bool {
[INFO] [stderr]    |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]   --> src/emitter.rs:85:35
[INFO] [stderr]    |
[INFO] [stderr] 85 |         fn add_annotation_to_file<'a>(file_vec: &mut Vec<FileWithAnnotatedLines>,
[INFO] [stderr]    |                                   ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/emitter.rs:175:21
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 let ref mut a = item.1;
[INFO] [stderr]     |                 ----^^^^^^^^^---------- help: try: `let a = &mut item.1;`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 33
[INFO] [stderr]    --> src/emitter.rs:211:6
[INFO] [stderr]     |
[INFO] [stderr] 211 | /      fn render_source_line(&self,
[INFO] [stderr] 212 | |                           buffer: &mut StyledBuffer,
[INFO] [stderr] 213 | |                           file: &File,
[INFO] [stderr] 214 | |                           line: &Line,
[INFO] [stderr] ...   |
[INFO] [stderr] 598 | |         }).collect::<Vec<_>>()
[INFO] [stderr] 599 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/emitter.rs:412:43
[INFO] [stderr]     |
[INFO] [stderr] 412 |           if line.annotations.is_empty() || line.annotations.iter()
[INFO] [stderr]     |  ___________________________________________^
[INFO] [stderr] 413 | |             .filter(|a| !a.is_line()).collect::<Vec<_>>().len() == 0
[INFO] [stderr]     | |____________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] help: using `is_empty` is clearer and more explicit
[INFO] [stderr]     |
[INFO] [stderr] 412 |         if line.annotations.is_empty() || line.annotations.iter()
[INFO] [stderr] 413 |             .filter(|a| !a.is_line()).collect::<Vec<_>>().is_empty()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: avoid using `collect()` when not needed
[INFO] [stderr]    --> src/emitter.rs:413:38
[INFO] [stderr]     |
[INFO] [stderr] 413 |             .filter(|a| !a.is_line()).collect::<Vec<_>>().len() == 0
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `.count()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_collect)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_collect
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/emitter.rs:429:20
[INFO] [stderr]     |
[INFO] [stderr] 429 |         for pos in 0..line_len + 1 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^ help: use: `0..=line_len`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/emitter.rs:490:26
[INFO] [stderr]     |
[INFO] [stderr] 490 |                 for p in line_offset + 1..line_offset + pos + 1 {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `line_offset + 1..=line_offset + pos`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/emitter.rs:507:30
[INFO] [stderr]     |
[INFO] [stderr] 507 |                     for p in line_offset..line_offset + pos + 1 {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `line_offset..=line_offset + pos`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[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/emitter.rs:615:27
[INFO] [stderr]     |
[INFO] [stderr] 615 |                      msg: &Vec<(String, Style)>,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[(String, Style)]`
[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/emitter.rs:689:34
[INFO] [stderr]     |
[INFO] [stderr] 689 |                             msg: &Vec<(String, Style)>,
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[(String, Style)]`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/emitter.rs:691:36
[INFO] [stderr]     |
[INFO] [stderr] 691 |                             level: &Level,
[INFO] [stderr]     |                                    ^^^^^^ help: consider passing by value instead: `Level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/emitter.rs:697:28
[INFO] [stderr]     |
[INFO] [stderr] 697 |         if is_secondary && spans.len() == 0 {
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `spans.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/emitter.rs:707:63
[INFO] [stderr]     |
[INFO] [stderr] 707 |             buffer.append(0, &level.to_string(), Style::Level(level.clone()));
[INFO] [stderr]     |                                                               ^^^^^^^^^^^^^ help: try dereferencing it: `*level`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/emitter.rs:709:52
[INFO] [stderr]     |
[INFO] [stderr] 709 |                 buffer.append(0, "[", Style::Level(level.clone()));
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^ help: try dereferencing it: `*level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/emitter.rs:710:54
[INFO] [stderr]     |
[INFO] [stderr] 710 |                 buffer.append(0, &code, Style::Level(level.clone()));
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^ help: try dereferencing it: `*level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/emitter.rs:711:52
[INFO] [stderr]     |
[INFO] [stderr] 711 |                 buffer.append(0, "]", Style::Level(level.clone()));
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^ help: try dereferencing it: `*level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/emitter.rs:888:17
[INFO] [stderr]     |
[INFO] [stderr] 888 | /                 match self.dst.flush() {
[INFO] [stderr] 889 | |                     Err(e) => panic!("failed to emit error: {}", e),
[INFO] [stderr] 890 | |                     _ => (),
[INFO] [stderr] 891 | |                 }
[INFO] [stderr]     | |_________________^ help: try this: `if let Err(e) = self.dst.flush() { panic!("failed to emit error: {}", e) }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[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/emitter.rs:947:41
[INFO] [stderr]     |
[INFO] [stderr] 947 | fn emit_to_destination(rendered_buffer: &Vec<Vec<StyledString>>,
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<StyledString>]`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/emitter.rs:948:29
[INFO] [stderr]     |
[INFO] [stderr] 948 |                        lvl: &Level,
[INFO] [stderr]     |                             ^^^^^^ help: consider passing by value instead: `Level`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.20s
[INFO] running `"docker" "inspect" "3f5c676a3d4601daacabe93f1595e5b3ef67ae7d299388f1f2e75983244be54b"`
[INFO] running `"docker" "rm" "-f" "3f5c676a3d4601daacabe93f1595e5b3ef67ae7d299388f1f2e75983244be54b"`
[INFO] [stdout] 3f5c676a3d4601daacabe93f1595e5b3ef67ae7d299388f1f2e75983244be54b