[INFO] crate wasm-bindgen-cli 0.2.29 is already in cache
[INFO] extracting crate wasm-bindgen-cli 0.2.29 into work/ex/clippy-test-run/sources/stable/reg/wasm-bindgen-cli/0.2.29
[INFO] extracting crate wasm-bindgen-cli 0.2.29 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/wasm-bindgen-cli/0.2.29
[INFO] validating manifest of wasm-bindgen-cli-0.2.29 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 wasm-bindgen-cli-0.2.29 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 wasm-bindgen-cli-0.2.29
[INFO] finished frobbing wasm-bindgen-cli-0.2.29
[INFO] frobbed toml for wasm-bindgen-cli-0.2.29 written to work/ex/clippy-test-run/sources/stable/reg/wasm-bindgen-cli/0.2.29/Cargo.toml
[INFO] started frobbing wasm-bindgen-cli-0.2.29
[INFO] finished frobbing wasm-bindgen-cli-0.2.29
[INFO] frobbed toml for wasm-bindgen-cli-0.2.29 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/wasm-bindgen-cli/0.2.29/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 wasm-bindgen-cli-0.2.29 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/wasm-bindgen-cli/0.2.29:/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] ccbf5eccbb0c257ba4be394f8b5bd51220d7e6ebdfab973bca9ef9f882a9a3c8
[INFO] running `"docker" "start" "-a" "ccbf5eccbb0c257ba4be394f8b5bd51220d7e6ebdfab973bca9ef9f882a9a3c8"`
[INFO] [stderr]     Checking wasm-bindgen-shared v0.2.29
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking filetime v0.2.4
[INFO] [stderr]     Checking parity-wasm v0.35.7
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking docopt v1.0.2
[INFO] [stderr]     Checking tiny_http v0.6.2
[INFO] [stderr]     Checking buf_redux v0.6.3
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]     Checking wasm-bindgen-threads-xform v0.2.29
[INFO] [stderr]     Checking wasm-bindgen-gc v0.2.29
[INFO] [stderr]     Checking wasm-bindgen-wasm-interpreter v0.2.29
[INFO] [stderr]     Checking multipart v0.13.6
[INFO] [stderr]     Checking wasm-bindgen-cli-support v0.2.29
[INFO] [stderr]     Checking rouille v2.2.0
[INFO] [stderr]     Checking wasm-bindgen-cli v0.2.29 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/main.rs:169:9
[INFO] [stderr]     |
[INFO] [stderr] 169 |         println!("");
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/main.rs:169:9
[INFO] [stderr]     |
[INFO] [stderr] 169 |         println!("");
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/bin/wasm2es6js.rs:18:15
[INFO] [stderr]    |
[INFO] [stderr] 18 | const USAGE: &'static str = "
[INFO] [stderr]    |              -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/bin/wasm2es6js.rs:18:15
[INFO] [stderr]    |
[INFO] [stderr] 18 | const USAGE: &'static str = "
[INFO] [stderr]    |              -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/bin/wasm-bindgen.rs:21:15
[INFO] [stderr]    |
[INFO] [stderr] 21 | const USAGE: &'static str = "
[INFO] [stderr]    |              -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/bin/wasm-bindgen.rs:21:15
[INFO] [stderr]    |
[INFO] [stderr] 21 | const USAGE: &'static str = "
[INFO] [stderr]    |              -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:485:5
[INFO] [stderr]     |
[INFO] [stderr] 485 |     return result;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `result`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/server.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         return response;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `response`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:485:5
[INFO] [stderr]     |
[INFO] [stderr] 485 |     return result;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `result`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/server.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         return response;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `response`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:122:12
[INFO] [stderr]     |
[INFO] [stderr] 122 |         if output.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!output.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: length comparison to zero
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 |     if logs.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!logs.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/bin/wasm-bindgen-test-runner/headless.rs:129:8
[INFO] [stderr]     |
[INFO] [stderr] 129 |     if errors.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!errors.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: use of `or` followed by a function call
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:307:33
[INFO] [stderr]     |
[INFO] [stderr] 307 |                 Ok(x.session_id.or(x.value.map(|v| v.session_id)).unwrap())
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_else(|| x.value.map(|v| v.session_id))`
[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: use of `ok_or` followed by a function call
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:385:14
[INFO] [stderr]     |
[INFO] [stderr] 385 |             .ok_or(format_err!("failed to find element reference in response"))?)
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| format_err!("failed to find element reference in response"))`
[INFO] [stderr]     |
[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: length comparison to zero
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:534:12
[INFO] [stderr]     |
[INFO] [stderr] 534 |         if stdout.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!stdout.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/bin/wasm-bindgen-test-runner/headless.rs:538:12
[INFO] [stderr]     |
[INFO] [stderr] 538 |         if stderr.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!stderr.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: single-character string constant used as pattern
[INFO] [stderr]   --> src/bin/wasm-bindgen-test-runner/node.rs:97:16
[INFO] [stderr]    |
[INFO] [stderr] 97 |         .split(",")
[INFO] [stderr]    |                ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/server.rs:119:31
[INFO] [stderr]     |
[INFO] [stderr] 119 |             if !part.contains(".") {
[INFO] [stderr]     |                               ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/main.rs:105:8
[INFO] [stderr]     |
[INFO] [stderr] 105 |     if tests.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tests.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: passing a unit value to a function
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/main.rs:174:19
[INFO] [stderr]     |
[INFO] [stderr] 174 |         return Ok(srv.run());
[INFO] [stderr]     |                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 174 |         return Ok(());
[INFO] [stderr]     |                   ^^
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:122:12
[INFO] [stderr]     |
[INFO] [stderr] 122 |         if output.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!output.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: length comparison to zero
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 |     if logs.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!logs.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/bin/wasm-bindgen-test-runner/headless.rs:129:8
[INFO] [stderr]     |
[INFO] [stderr] 129 |     if errors.len() > 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!errors.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: use of `or` followed by a function call
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:307:33
[INFO] [stderr]     |
[INFO] [stderr] 307 |                 Ok(x.session_id.or(x.value.map(|v| v.session_id)).unwrap())
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_else(|| x.value.map(|v| v.session_id))`
[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: use of `ok_or` followed by a function call
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:385:14
[INFO] [stderr]     |
[INFO] [stderr] 385 |             .ok_or(format_err!("failed to find element reference in response"))?)
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| format_err!("failed to find element reference in response"))`
[INFO] [stderr]     |
[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: length comparison to zero
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/headless.rs:534:12
[INFO] [stderr]     |
[INFO] [stderr] 534 |         if stdout.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!stdout.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/bin/wasm-bindgen-test-runner/headless.rs:538:12
[INFO] [stderr]     |
[INFO] [stderr] 538 |         if stderr.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!stderr.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: single-character string constant used as pattern
[INFO] [stderr]   --> src/bin/wasm-bindgen-test-runner/node.rs:97:16
[INFO] [stderr]    |
[INFO] [stderr] 97 |         .split(",")
[INFO] [stderr]    |                ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/server.rs:119:31
[INFO] [stderr]     |
[INFO] [stderr] 119 |             if !part.contains(".") {
[INFO] [stderr]     |                               ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/main.rs:105:8
[INFO] [stderr]     |
[INFO] [stderr] 105 |     if tests.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tests.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: passing a unit value to a function
[INFO] [stderr]    --> src/bin/wasm-bindgen-test-runner/main.rs:174:19
[INFO] [stderr]     |
[INFO] [stderr] 174 |         return Ok(srv.run());
[INFO] [stderr]     |                   ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[INFO] [stderr] help: if you intended to pass a unit value, use a unit literal instead
[INFO] [stderr]     |
[INFO] [stderr] 174 |         return Ok(());
[INFO] [stderr]     |                   ^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.13s
[INFO] running `"docker" "inspect" "ccbf5eccbb0c257ba4be394f8b5bd51220d7e6ebdfab973bca9ef9f882a9a3c8"`
[INFO] running `"docker" "rm" "-f" "ccbf5eccbb0c257ba4be394f8b5bd51220d7e6ebdfab973bca9ef9f882a9a3c8"`
[INFO] [stdout] ccbf5eccbb0c257ba4be394f8b5bd51220d7e6ebdfab973bca9ef9f882a9a3c8