[INFO] updating cached repository jleahred/indent_tokenizer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jleahred/indent_tokenizer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jleahred/indent_tokenizer" "work/ex/clippy-test-run/sources/stable/gh/jleahred/indent_tokenizer"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/jleahred/indent_tokenizer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jleahred/indent_tokenizer" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jleahred/indent_tokenizer"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jleahred/indent_tokenizer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 10de433b6387d222ee00e79252938c529342f0b8
[INFO] sha for GitHub repo jleahred/indent_tokenizer: 10de433b6387d222ee00e79252938c529342f0b8
[INFO] validating manifest of jleahred/indent_tokenizer 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 jleahred/indent_tokenizer 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 jleahred/indent_tokenizer
[INFO] finished frobbing jleahred/indent_tokenizer
[INFO] frobbed toml for jleahred/indent_tokenizer written to work/ex/clippy-test-run/sources/stable/gh/jleahred/indent_tokenizer/Cargo.toml
[INFO] started frobbing jleahred/indent_tokenizer
[INFO] finished frobbing jleahred/indent_tokenizer
[INFO] frobbed toml for jleahred/indent_tokenizer written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jleahred/indent_tokenizer/Cargo.toml
[INFO] crate jleahred/indent_tokenizer 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 jleahred/indent_tokenizer against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jleahred/indent_tokenizer:/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 -Dclippy::into_iter_on_array" "-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] 06b2cdd5aa73fac85b353edfa4ab3fa99694ad73029300de97c6b67f737c3f21
[INFO] running `"docker" "start" "-a" "06b2cdd5aa73fac85b353edfa4ab3fa99694ad73029300de97c6b67f737c3f21"`
[INFO] [stderr]     Checking indent_tokenizer v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/process_line.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |             indent: indent,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `indent`
[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/process_line.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |             indent: indent,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `indent`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/impl_token.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |     fn next(&self) -> Self {
[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 argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/impl_token.rs:151:13
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn prev(&self) -> Self {
[INFO] [stderr]     |             ^^^^^ help: consider passing by value instead: `self`
[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: you should consider deriving a `Default` implementation for `Token`
[INFO] [stderr]    --> src/impl_token.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 | /     pub fn new() -> Token {
[INFO] [stderr] 159 | |         Token {
[INFO] [stderr] 160 | |             lines: Vec::new(),
[INFO] [stderr] 161 | |             tokens: Vec::new(),
[INFO] [stderr] 162 | |         }
[INFO] [stderr] 163 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 23  | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/impl_token.rs:187:20
[INFO] [stderr]     |
[INFO] [stderr] 187 |                 if self.tokens.len() == 0 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.tokens.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: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/impl_token.rs:218:12
[INFO] [stderr]     |
[INFO] [stderr] 218 |         if self.new_token.is_empty() == false {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!self.new_token.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/process_line.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |         if located_start_indent == false {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!located_start_indent`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: you should use the `ends_with` method
[INFO] [stderr]   --> src/process_line.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |         if lresult.0.chars().last() == Some(EOL_CHAR) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `lresult.0.ends_with(EOL_CHAR)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::chars_last_cmp)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#chars_last_cmp
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]    --> src/parsing_lines.rs:114:14
[INFO] [stderr]     |
[INFO] [stderr] 114 |             .ok_or(get_error(self.line_counter))?;
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| get_error(self.line_counter))`
[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: you should consider deriving a `Default` implementation for `SLine`
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 | /     pub fn new() -> Self {
[INFO] [stderr] 61 | |         SLine(String::new())
[INFO] [stderr] 62 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 18 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/impl_token.rs:148:13
[INFO] [stderr]     |
[INFO] [stderr] 148 |     fn next(&self) -> Self {
[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 argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/impl_token.rs:151:13
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn prev(&self) -> Self {
[INFO] [stderr]     |             ^^^^^ help: consider passing by value instead: `self`
[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: you should consider deriving a `Default` implementation for `Token`
[INFO] [stderr]    --> src/impl_token.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 | /     pub fn new() -> Token {
[INFO] [stderr] 159 | |         Token {
[INFO] [stderr] 160 | |             lines: Vec::new(),
[INFO] [stderr] 161 | |             tokens: Vec::new(),
[INFO] [stderr] 162 | |         }
[INFO] [stderr] 163 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 23  | #[derive(Default)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/impl_token.rs:187:20
[INFO] [stderr]     |
[INFO] [stderr] 187 |                 if self.tokens.len() == 0 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.tokens.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: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/impl_token.rs:218:12
[INFO] [stderr]     |
[INFO] [stderr] 218 |         if self.new_token.is_empty() == false {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!self.new_token.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/impl_token.rs:269:13
[INFO] [stderr]     |
[INFO] [stderr] 269 |     assert!(tokens.len() == 0);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tokens.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: the function has a cyclomatic complexity of 27
[INFO] [stderr]    --> src/impl_token.rs:523:1
[INFO] [stderr]     |
[INFO] [stderr] 523 | / fn add_sub_sub_sub_token() {
[INFO] [stderr] 524 | |     let tokens = AddTokens::new()
[INFO] [stderr] 525 | |         .add_line(&SLine::from("A1"))
[INFO] [stderr] 526 | |         .add_line(&SLine::from("A2"))
[INFO] [stderr] ...   |
[INFO] [stderr] 573 | |     assert!(tokens[1].tokens[0].tokens[1].tokens[0].lines[2] == SLine::from("BABA3"));
[INFO] [stderr] 574 | | }
[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: the function has a cyclomatic complexity of 33
[INFO] [stderr]    --> src/impl_token.rs:616:1
[INFO] [stderr]     |
[INFO] [stderr] 616 | / fn add_back_token() {
[INFO] [stderr] 617 | |     let gen_tokens = || -> Result<Vec<Token>, String> {
[INFO] [stderr] 618 | |         Ok(AddTokens::new()
[INFO] [stderr] 619 | |             .add_line(&SLine::from("A1"))
[INFO] [stderr] ...   |
[INFO] [stderr] 682 | |     assert!(tokens[1].tokens[1].lines[1] == SLine::from("BB2"));
[INFO] [stderr] 683 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[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/impl_token.rs:649:13
[INFO] [stderr]     |
[INFO] [stderr] 649 |     assert!(tokens[0].tokens.len() == 0);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tokens[0].tokens.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: length comparison to zero
[INFO] [stderr]    --> src/impl_token.rs:666:13
[INFO] [stderr]     |
[INFO] [stderr] 666 |     assert!(tokens[1].tokens[0].tokens[0].tokens.len() == 0);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tokens[1].tokens[0].tokens[0].tokens.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: length comparison to zero
[INFO] [stderr]    --> src/impl_token.rs:674:13
[INFO] [stderr]     |
[INFO] [stderr] 674 |     assert!(tokens[1].tokens[0].tokens[1].tokens[0].tokens.len() == 0);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tokens[1].tokens[0].tokens[1].tokens[0].tokens.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: equality checks against false can be replaced by a negation
[INFO] [stderr]   --> src/process_line.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |         if located_start_indent == false {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!located_start_indent`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: you should use the `ends_with` method
[INFO] [stderr]   --> src/process_line.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |         if lresult.0.chars().last() == Some(EOL_CHAR) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: like this: `lresult.0.ends_with(EOL_CHAR)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::chars_last_cmp)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#chars_last_cmp
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]    --> src/parsing_lines.rs:114:14
[INFO] [stderr]     |
[INFO] [stderr] 114 |             .ok_or(get_error(self.line_counter))?;
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| get_error(self.line_counter))`
[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: you should consider deriving a `Default` implementation for `SLine`
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 | /     pub fn new() -> Self {
[INFO] [stderr] 61 | |         SLine(String::new())
[INFO] [stderr] 62 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 18 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/tests.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     assert!(tokens.len() == 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tokens.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: length comparison to zero
[INFO] [stderr]   --> src/tests.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |     assert!(tokens.len() == 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tokens.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: length comparison to zero
[INFO] [stderr]   --> src/tests.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |     assert!(tokens.len() == 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tokens.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]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "06b2cdd5aa73fac85b353edfa4ab3fa99694ad73029300de97c6b67f737c3f21"`
[INFO] running `"docker" "rm" "-f" "06b2cdd5aa73fac85b353edfa4ab3fa99694ad73029300de97c6b67f737c3f21"`
[INFO] [stdout] 06b2cdd5aa73fac85b353edfa4ab3fa99694ad73029300de97c6b67f737c3f21