[INFO] crate cucumber 0.3.1 is already in cache
[INFO] extracting crate cucumber 0.3.1 into work/ex/clippy-test-run/sources/stable/reg/cucumber/0.3.1
[INFO] extracting crate cucumber 0.3.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/cucumber/0.3.1
[INFO] validating manifest of cucumber-0.3.1 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 cucumber-0.3.1 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 cucumber-0.3.1
[INFO] removed 0 missing tests
[INFO] finished frobbing cucumber-0.3.1
[INFO] frobbed toml for cucumber-0.3.1 written to work/ex/clippy-test-run/sources/stable/reg/cucumber/0.3.1/Cargo.toml
[INFO] started frobbing cucumber-0.3.1
[INFO] removed 0 missing tests
[INFO] finished frobbing cucumber-0.3.1
[INFO] frobbed toml for cucumber-0.3.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/cucumber/0.3.1/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 cucumber-0.3.1 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/cucumber/0.3.1:/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] acd332d85bf69ad585866511e995b88f1cc4ddc15c1ef231feac89d1f5c815bd
[INFO] running `"docker" "start" "-a" "acd332d85bf69ad585866511e995b88f1cc4ddc15c1ef231feac89d1f5c815bd"`
[INFO] [stderr]    Compiling cucumber v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/state.rs:113:27
[INFO] [stderr]     |
[INFO] [stderr] 113 |                 StepArg { pos: pos, val: captures.at(idx).map(|v| v.to_owned()) }
[INFO] [stderr]     |                           ^^^^^^^^ help: replace it with: `pos`
[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/server.rs:89:14
[INFO] [stderr]    |
[INFO] [stderr] 89 |     Server { runner: runner }
[INFO] [stderr]    |              ^^^^^^^^^^^^^^ help: replace it with: `runner`
[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/runner.rs:37:7
[INFO] [stderr]    |
[INFO] [stderr] 37 |       world: world,
[INFO] [stderr]    |       ^^^^^^^^^^^^ help: replace it with: `world`
[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/launcher.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     world: world,
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `world`
[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/state.rs:113:27
[INFO] [stderr]     |
[INFO] [stderr] 113 |                 StepArg { pos: pos, val: captures.at(idx).map(|v| v.to_owned()) }
[INFO] [stderr]     |                           ^^^^^^^^ help: replace it with: `pos`
[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/server.rs:89:14
[INFO] [stderr]    |
[INFO] [stderr] 89 |     Server { runner: runner }
[INFO] [stderr]    |              ^^^^^^^^^^^^^^ help: replace it with: `runner`
[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/runner.rs:37:7
[INFO] [stderr]    |
[INFO] [stderr] 37 |       world: world,
[INFO] [stderr]    |       ^^^^^^^^^^^^ help: replace it with: `world`
[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/launcher.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     world: world,
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `world`
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:153:36
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     const FIELDS: &'static [&'static str] =
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:153:46
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     const FIELDS: &'static [&'static str] =
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:326:36
[INFO] [stderr]     |
[INFO] [stderr] 326 |                     const FIELDS: &'static [&'static str] = &["id", "args"];
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:326:46
[INFO] [stderr]     |
[INFO] [stderr] 326 |                     const FIELDS: &'static [&'static str] = &["id", "args"];
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:465:36
[INFO] [stderr]     |
[INFO] [stderr] 465 |                     const FIELDS: &'static [&'static str] = &["tags"];
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:465:46
[INFO] [stderr]     |
[INFO] [stderr] 465 |                     const FIELDS: &'static [&'static str] = &["tags"];
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:605:36
[INFO] [stderr]     |
[INFO] [stderr] 605 |                     const FIELDS: &'static [&'static str] = &["tags"];
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:605:46
[INFO] [stderr]     |
[INFO] [stderr] 605 |                     const FIELDS: &'static [&'static str] = &["tags"];
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:828:36
[INFO] [stderr]     |
[INFO] [stderr] 828 |                     const FIELDS: &'static [&'static str] =
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:828:46
[INFO] [stderr]     |
[INFO] [stderr] 828 |                     const FIELDS: &'static [&'static str] =
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]   --> src/event/request.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::ascii::AsciiExt;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:153:36
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     const FIELDS: &'static [&'static str] =
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:153:46
[INFO] [stderr]     |
[INFO] [stderr] 153 |                     const FIELDS: &'static [&'static str] =
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:326:36
[INFO] [stderr]     |
[INFO] [stderr] 326 |                     const FIELDS: &'static [&'static str] = &["id", "args"];
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:326:46
[INFO] [stderr]     |
[INFO] [stderr] 326 |                     const FIELDS: &'static [&'static str] = &["id", "args"];
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:465:36
[INFO] [stderr]     |
[INFO] [stderr] 465 |                     const FIELDS: &'static [&'static str] = &["tags"];
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:465:46
[INFO] [stderr]     |
[INFO] [stderr] 465 |                     const FIELDS: &'static [&'static str] = &["tags"];
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:605:36
[INFO] [stderr]     |
[INFO] [stderr] 605 |                     const FIELDS: &'static [&'static str] = &["tags"];
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:605:46
[INFO] [stderr]     |
[INFO] [stderr] 605 |                     const FIELDS: &'static [&'static str] = &["tags"];
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:828:36
[INFO] [stderr]     |
[INFO] [stderr] 828 |                     const FIELDS: &'static [&'static str] =
[INFO] [stderr]     |                                   -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stderr]     |
[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]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/request.rs:828:46
[INFO] [stderr]     |
[INFO] [stderr] 828 |                     const FIELDS: &'static [&'static str] =
[INFO] [stderr]     |                                             -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]     |
[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: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]   --> src/event/request.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::ascii::AsciiExt;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stderr]   --> src/event/request.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::ascii::AsciiExt;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `state::Cucumber<World>`
[INFO] [stderr]   --> src/state.rs:70:3
[INFO] [stderr]    |
[INFO] [stderr] 70 | /   pub fn new() -> Cucumber<World> {
[INFO] [stderr] 71 | |     Cucumber {
[INFO] [stderr] 72 | |       step_regexes: Vec::new(),
[INFO] [stderr] 73 | |       step_ids: HashMap::new(),
[INFO] [stderr] ...  |
[INFO] [stderr] 76 | |     }
[INFO] [stderr] 77 | |   }
[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] 62 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/state.rs:90:36
[INFO] [stderr]    |
[INFO] [stderr] 90 |     self.step_ids.insert(str_rep, (this_id.clone(), path));
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^ help: try removing the `clone` call: `this_id`
[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: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/state.rs:116:28
[INFO] [stderr]     |
[INFO] [stderr] 116 |           let (id, path) = self.step_ids.get(regex.as_str()).unwrap().clone();
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.step_ids[regex.as_str()]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/state.rs:155:16
[INFO] [stderr]     |
[INFO] [stderr] 155 |           .map(|arg| InvokeArgument::from_step_arg(arg))
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `InvokeArgument::from_step_arg`
[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: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/server.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     let _ = self.kill_sender.send(()).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[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/server.rs:127:17
[INFO] [stderr]     |
[INFO] [stderr] 127 | /                 match request {
[INFO] [stderr] 128 | |                   Ok(req_body) => {
[INFO] [stderr] 129 | |                     let response = self.runner.execute_cmd(req_body);
[INFO] [stderr] 130 | |                     let _ =
[INFO] [stderr] ...   |
[INFO] [stderr] 134 | |                   _ => {},
[INFO] [stderr] 135 | |                 }
[INFO] [stderr]     | |_________________^
[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] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 127 |                 if let Ok(req_body) = request {
[INFO] [stderr] 128 |   let response = self.runner.execute_cmd(req_body);
[INFO] [stderr] 129 |   let _ =
[INFO] [stderr] 130 |     stream.write(format!("{}\n", serde_json::to_string(&response).unwrap())
[INFO] [stderr] 131 |       .as_bytes());
[INFO] [stderr] 132 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/runner.rs:72:12
[INFO] [stderr]    |
[INFO] [stderr] 72 |         if matches.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `matches.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: redundant closure found
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg.rs:54:16
[INFO] [stderr]    |
[INFO] [stderr] 54 |           .map(|r| Some(r))
[INFO] [stderr]    |                ^^^^^^^^^^^ help: remove closure as shown: `Some`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stderr]   --> src/event/request.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::ascii::AsciiExt;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 |     if args.len() != 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!args.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: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 69 | auto_define_for_tuple!(1;  [A]);
[INFO] [stderr]    | -------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::eval_order_dependence)] on by default
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 71 | auto_define_for_tuple!(3;  [A, B, C]);
[INFO] [stderr]    | -------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 71 | auto_define_for_tuple!(3;  [A, B, C]);
[INFO] [stderr]    | -------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 71 | auto_define_for_tuple!(3;  [A, B, C]);
[INFO] [stderr]    | -------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 72 | auto_define_for_tuple!(4;  [A, B, C, D]);
[INFO] [stderr]    | ----------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 | auto_define_for_tuple!(4;  [A, B, C, D]);
[INFO] [stderr]    | ----------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 | auto_define_for_tuple!(4;  [A, B, C, D]);
[INFO] [stderr]    | ----------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 73 | auto_define_for_tuple!(5;  [A, B, C, D, E]);
[INFO] [stderr]    | -------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 | auto_define_for_tuple!(5;  [A, B, C, D, E]);
[INFO] [stderr]    | -------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 | auto_define_for_tuple!(5;  [A, B, C, D, E]);
[INFO] [stderr]    | -------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 74 | auto_define_for_tuple!(6;  [A, B, C, D, E, F]);
[INFO] [stderr]    | ----------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 | auto_define_for_tuple!(6;  [A, B, C, D, E, F]);
[INFO] [stderr]    | ----------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 | auto_define_for_tuple!(6;  [A, B, C, D, E, F]);
[INFO] [stderr]    | ----------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 75 | auto_define_for_tuple!(7;  [A, B, C, D, E, F, G]);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 | auto_define_for_tuple!(7;  [A, B, C, D, E, F, G]);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 | auto_define_for_tuple!(7;  [A, B, C, D, E, F, G]);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 76 | auto_define_for_tuple!(8;  [A, B, C, D, E, F, G, H]);
[INFO] [stderr]    | ----------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 76 | auto_define_for_tuple!(8;  [A, B, C, D, E, F, G, H]);
[INFO] [stderr]    | ----------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 76 | auto_define_for_tuple!(8;  [A, B, C, D, E, F, G, H]);
[INFO] [stderr]    | ----------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 77 | auto_define_for_tuple!(9;  [A, B, C, D, E, F, G, H, I]);
[INFO] [stderr]    | -------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 | auto_define_for_tuple!(9;  [A, B, C, D, E, F, G, H, I]);
[INFO] [stderr]    | -------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 | auto_define_for_tuple!(9;  [A, B, C, D, E, F, G, H, I]);
[INFO] [stderr]    | -------------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 78 | auto_define_for_tuple!(10; [A, B, C, D, E, F, G, H, I, J]);
[INFO] [stderr]    | ----------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 78 | auto_define_for_tuple!(10; [A, B, C, D, E, F, G, H, I, J]);
[INFO] [stderr]    | ----------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 78 | auto_define_for_tuple!(10; [A, B, C, D, E, F, G, H, I, J]);
[INFO] [stderr]    | ----------------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 79 | auto_define_for_tuple!(11; [A, B, C, D, E, F, G, H, I, J, K]);
[INFO] [stderr]    | -------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 | auto_define_for_tuple!(11; [A, B, C, D, E, F, G, H, I, J, K]);
[INFO] [stderr]    | -------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 | auto_define_for_tuple!(11; [A, B, C, D, E, F, G, H, I, J, K]);
[INFO] [stderr]    | -------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 80 | auto_define_for_tuple!(12; [A, B, C, D, E, F, G, H, I, J, K, L]);
[INFO] [stderr]    | ----------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 80 | auto_define_for_tuple!(12; [A, B, C, D, E, F, G, H, I, J, K, L]);
[INFO] [stderr]    | ----------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 80 | auto_define_for_tuple!(12; [A, B, C, D, E, F, G, H, I, J, K, L]);
[INFO] [stderr]    | ----------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: defining a method called `from_str` on this type; consider implementing the `std::str::FromStr` trait or choosing a less ambiguous name
[INFO] [stderr]    --> src/event/request.rs:121:3
[INFO] [stderr]     |
[INFO] [stderr] 121 | /   pub fn from_str(arg: &str) -> InvokeArgument {
[INFO] [stderr] 122 | |     InvokeArgument::String(arg.to_owned())
[INFO] [stderr] 123 | |   }
[INFO] [stderr]     | |___^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::should_implement_trait)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/event/request.rs:153:47
[INFO] [stderr]     |
[INFO] [stderr] 153 |     VecVisitor::new().visit_seq(_visitor).map(|res| InvokeArgument::Table(res))
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `InvokeArgument::Table`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:38:29
[INFO] [stderr]    |
[INFO] [stderr] 38 | /                             loop  {
[INFO] [stderr] 39 | |                                 match self.state {
[INFO] [stderr] 40 | |                                     0usize => {
[INFO] [stderr] 41 | |                                         self.state += 1;
[INFO] [stderr] ...  |
[INFO] [stderr] 53 | |                                 }
[INFO] [stderr] 54 | |                             }
[INFO] [stderr]    | |_____________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:42:56
[INFO] [stderr]    |
[INFO] [stderr] 42 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("id", &self.value.id))));
[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]    = 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: passing a unit value to a function
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:46:56
[INFO] [stderr]    |
[INFO] [stderr] 46 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("args", &self.value.args))));
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:50:56
[INFO] [stderr]    |
[INFO] [stderr] 50 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("source", &self.value.source))));
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: the operation is ineffective. Consider reducing it to `1`
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:57:63
[INFO] [stderr]    |
[INFO] [stderr] 57 |                         fn len(&self) -> Option<usize> { Some(0 + 1 + 1 + 1) }
[INFO] [stderr]    |                                                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_op)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:97:29
[INFO] [stderr]     |
[INFO] [stderr] 97  | /                             loop  {
[INFO] [stderr] 98  | |                                 match self.state {
[INFO] [stderr] 99  | |                                     0usize => {
[INFO] [stderr] 100 | |                                         self.state += 1;
[INFO] [stderr] ...   |
[INFO] [stderr] 108 | |                                 }
[INFO] [stderr] 109 | |                             }
[INFO] [stderr]     | |_____________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:101:56
[INFO] [stderr]     |
[INFO] [stderr] 101 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("message", &self.value.message))));
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:105:56
[INFO] [stderr]     |
[INFO] [stderr] 105 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("exception", &self.value.exception))));
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: the operation is ineffective. Consider reducing it to `1`
[INFO] [stderr]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:112:63
[INFO] [stderr]     |
[INFO] [stderr] 112 |                         fn len(&self) -> Option<usize> { Some(0 + 1 + 1) }
[INFO] [stderr]     |                                                               ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/event/response.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | /     match self {
[INFO] [stderr] 36 | |       &Response::StepMatches(ref response) => {
[INFO] [stderr] 37 | |         let empty_vec = Vec::new();
[INFO] [stderr] 38 | |         let body = match response {
[INFO] [stderr] ...  |
[INFO] [stderr] 59 | |       },
[INFO] [stderr] 60 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 35 |     match *self {
[INFO] [stderr] 36 |       Response::StepMatches(ref response) => {
[INFO] [stderr] 37 |         let empty_vec = Vec::new();
[INFO] [stderr] 38 |         let body = match response {
[INFO] [stderr] 39 |           &StepMatchesResponse::NoMatch => &empty_vec,
[INFO] [stderr] 40 |           &StepMatchesResponse::Match(ref steps) => steps,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/event/response.rs:38:20
[INFO] [stderr]    |
[INFO] [stderr] 38 |           let body = match response {
[INFO] [stderr]    |  ____________________^
[INFO] [stderr] 39 | |           &StepMatchesResponse::NoMatch => &empty_vec,
[INFO] [stderr] 40 | |           &StepMatchesResponse::Match(ref steps) => steps,
[INFO] [stderr] 41 | |         };
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let body = match *response {
[INFO] [stderr] 39 |           StepMatchesResponse::NoMatch => &empty_vec,
[INFO] [stderr] 40 |           StepMatchesResponse::Match(ref steps) => steps,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/event/response.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 | /         match response {
[INFO] [stderr] 46 | |           &InvokeResponse::Pending(ref message) => {
[INFO] [stderr] 47 | |             s.serialize_seq(TupleVisitor2::new(&("pending", message)))
[INFO] [stderr] 48 | |           },
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |           },
[INFO] [stderr] 53 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 45 |         match *response {
[INFO] [stderr] 46 |           InvokeResponse::Pending(ref message) => {
[INFO] [stderr] 47 |             s.serialize_seq(TupleVisitor2::new(&("pending", message)))
[INFO] [stderr] 48 |           },
[INFO] [stderr] 49 |           InvokeResponse::Success => s.serialize_seq(Some(&("success"))),
[INFO] [stderr] 50 |           InvokeResponse::Fail(ref message) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]   --> src/event/response.rs:93:34
[INFO] [stderr]    |
[INFO] [stderr] 93 |           Some(ref v) => Ok(Some(try!(serializer.serialize_struct_elt("val", v.clone())))),
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]   --> src/event/response.rs:94:27
[INFO] [stderr]    |
[INFO] [stderr] 94 |           None => Ok(Some(try!(serializer.serialize_struct_elt("val", ())))),
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]    --> src/event/response.rs:100:34
[INFO] [stderr]     |
[INFO] [stderr] 100 |           Some(ref v) => Ok(Some(try!(serializer.serialize_struct_elt("pos", v.clone())))),
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]    --> src/event/response.rs:101:27
[INFO] [stderr]     |
[INFO] [stderr] 101 |           None => Ok(Some(try!(serializer.serialize_struct_elt("pos", ())))),
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `cucumber`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `state::Cucumber<World>`
[INFO] [stderr]   --> src/state.rs:70:3
[INFO] [stderr]    |
[INFO] [stderr] 70 | /   pub fn new() -> Cucumber<World> {
[INFO] [stderr] 71 | |     Cucumber {
[INFO] [stderr] 72 | |       step_regexes: Vec::new(),
[INFO] [stderr] 73 | |       step_ids: HashMap::new(),
[INFO] [stderr] ...  |
[INFO] [stderr] 76 | |     }
[INFO] [stderr] 77 | |   }
[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] 62 | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/state.rs:90:36
[INFO] [stderr]    |
[INFO] [stderr] 90 |     self.step_ids.insert(str_rep, (this_id.clone(), path));
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^ help: try removing the `clone` call: `this_id`
[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: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]    --> src/state.rs:116:28
[INFO] [stderr]     |
[INFO] [stderr] 116 |           let (id, path) = self.step_ids.get(regex.as_str()).unwrap().clone();
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&self.step_ids[regex.as_str()]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/state.rs:155:16
[INFO] [stderr]     |
[INFO] [stderr] 155 |           .map(|arg| InvokeArgument::from_step_arg(arg))
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `InvokeArgument::from_step_arg`
[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: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> src/server.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     let _ = self.kill_sender.send(()).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[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/server.rs:127:17
[INFO] [stderr]     |
[INFO] [stderr] 127 | /                 match request {
[INFO] [stderr] 128 | |                   Ok(req_body) => {
[INFO] [stderr] 129 | |                     let response = self.runner.execute_cmd(req_body);
[INFO] [stderr] 130 | |                     let _ =
[INFO] [stderr] ...   |
[INFO] [stderr] 134 | |                   _ => {},
[INFO] [stderr] 135 | |                 }
[INFO] [stderr]     | |_________________^
[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] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 127 |                 if let Ok(req_body) = request {
[INFO] [stderr] 128 |   let response = self.runner.execute_cmd(req_body);
[INFO] [stderr] 129 |   let _ =
[INFO] [stderr] 130 |     stream.write(format!("{}\n", serde_json::to_string(&response).unwrap())
[INFO] [stderr] 131 |       .as_bytes());
[INFO] [stderr] 132 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/server.rs:187:7
[INFO] [stderr]     |
[INFO] [stderr] 187 |       stream.write(b"[\"begin_scenario\"]\n").unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/server.rs:195:7
[INFO] [stderr]     |
[INFO] [stderr] 195 |       stream.write(b"[\"end_scenario\"]\n").unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/server.rs:203:7
[INFO] [stderr]     |
[INFO] [stderr] 203 |       stream.write(b"[\"invoke\", {\"id\": \"1\", \"args\": []}]\n").unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/server.rs:211:7
[INFO] [stderr]     |
[INFO] [stderr] 211 |       stream.write(b"[\"step_matches\", {\"name_to_match\": \"test\"}]\n").unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]    --> src/server.rs:219:7
[INFO] [stderr]     |
[INFO] [stderr] 219 |       stream.write(b"[\"snippet_text\", {\"step_keyword\": \"Given\", \"multiline_arg_class\": \"\", \"step_name\": \"test\"}]\n").unwrap();
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/runner.rs:72:12
[INFO] [stderr]    |
[INFO] [stderr] 72 |         if matches.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `matches.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: redundant closure found
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg.rs:54:16
[INFO] [stderr]    |
[INFO] [stderr] 54 |           .map(|r| Some(r))
[INFO] [stderr]    |                ^^^^^^^^^^^ help: remove closure as shown: `Some`
[INFO] [stderr]    |
[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/definitions/destructuring/invoke_arg_set.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 |     if args.len() != 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!args.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: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 69 | auto_define_for_tuple!(1;  [A]);
[INFO] [stderr]    | -------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::eval_order_dependence)] on by default
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 | auto_define_for_tuple!(2;  [A, B]);
[INFO] [stderr]    | ----------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 71 | auto_define_for_tuple!(3;  [A, B, C]);
[INFO] [stderr]    | -------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 71 | auto_define_for_tuple!(3;  [A, B, C]);
[INFO] [stderr]    | -------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 71 | auto_define_for_tuple!(3;  [A, B, C]);
[INFO] [stderr]    | -------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 72 | auto_define_for_tuple!(4;  [A, B, C, D]);
[INFO] [stderr]    | ----------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 | auto_define_for_tuple!(4;  [A, B, C, D]);
[INFO] [stderr]    | ----------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 | auto_define_for_tuple!(4;  [A, B, C, D]);
[INFO] [stderr]    | ----------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 73 | auto_define_for_tuple!(5;  [A, B, C, D, E]);
[INFO] [stderr]    | -------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 | auto_define_for_tuple!(5;  [A, B, C, D, E]);
[INFO] [stderr]    | -------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 | auto_define_for_tuple!(5;  [A, B, C, D, E]);
[INFO] [stderr]    | -------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 74 | auto_define_for_tuple!(6;  [A, B, C, D, E, F]);
[INFO] [stderr]    | ----------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 | auto_define_for_tuple!(6;  [A, B, C, D, E, F]);
[INFO] [stderr]    | ----------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 | auto_define_for_tuple!(6;  [A, B, C, D, E, F]);
[INFO] [stderr]    | ----------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 75 | auto_define_for_tuple!(7;  [A, B, C, D, E, F, G]);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 | auto_define_for_tuple!(7;  [A, B, C, D, E, F, G]);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 | auto_define_for_tuple!(7;  [A, B, C, D, E, F, G]);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 76 | auto_define_for_tuple!(8;  [A, B, C, D, E, F, G, H]);
[INFO] [stderr]    | ----------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 76 | auto_define_for_tuple!(8;  [A, B, C, D, E, F, G, H]);
[INFO] [stderr]    | ----------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 76 | auto_define_for_tuple!(8;  [A, B, C, D, E, F, G, H]);
[INFO] [stderr]    | ----------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 77 | auto_define_for_tuple!(9;  [A, B, C, D, E, F, G, H, I]);
[INFO] [stderr]    | -------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 | auto_define_for_tuple!(9;  [A, B, C, D, E, F, G, H, I]);
[INFO] [stderr]    | -------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 | auto_define_for_tuple!(9;  [A, B, C, D, E, F, G, H, I]);
[INFO] [stderr]    | -------------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 78 | auto_define_for_tuple!(10; [A, B, C, D, E, F, G, H, I, J]);
[INFO] [stderr]    | ----------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 78 | auto_define_for_tuple!(10; [A, B, C, D, E, F, G, H, I, J]);
[INFO] [stderr]    | ----------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 78 | auto_define_for_tuple!(10; [A, B, C, D, E, F, G, H, I, J]);
[INFO] [stderr]    | ----------------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 79 | auto_define_for_tuple!(11; [A, B, C, D, E, F, G, H, I, J, K]);
[INFO] [stderr]    | -------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 | auto_define_for_tuple!(11; [A, B, C, D, E, F, G, H, I, J, K]);
[INFO] [stderr]    | -------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 79 | auto_define_for_tuple!(11; [A, B, C, D, E, F, G, H, I, J, K]);
[INFO] [stderr]    | -------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `counter += 1`
[INFO] [stderr] ...
[INFO] [stderr] 80 | auto_define_for_tuple!(12; [A, B, C, D, E, F, G, H, I, J, K, L]);
[INFO] [stderr]    | ----------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unsequenced read of a variable
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 80 | auto_define_for_tuple!(12; [A, B, C, D, E, F, G, H, I, J, K, L]);
[INFO] [stderr]    | ----------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr] note: whether read occurs before this write depends on evaluation order
[INFO] [stderr]   --> src/definitions/destructuring/invoke_arg_set.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |              counter = counter + 1;
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 80 | auto_define_for_tuple!(12; [A, B, C, D, E, F, G, H, I, J, K, L]);
[INFO] [stderr]    | ----------------------------------------------------------------- in this macro invocation
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eval_order_dependence
[INFO] [stderr] 
[INFO] [stderr] warning: defining a method called `from_str` on this type; consider implementing the `std::str::FromStr` trait or choosing a less ambiguous name
[INFO] [stderr]    --> src/event/request.rs:121:3
[INFO] [stderr]     |
[INFO] [stderr] 121 | /   pub fn from_str(arg: &str) -> InvokeArgument {
[INFO] [stderr] 122 | |     InvokeArgument::String(arg.to_owned())
[INFO] [stderr] 123 | |   }
[INFO] [stderr]     | |___^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::should_implement_trait)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/event/request.rs:153:47
[INFO] [stderr]     |
[INFO] [stderr] 153 |     VecVisitor::new().visit_seq(_visitor).map(|res| InvokeArgument::Table(res))
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `InvokeArgument::Table`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:38:29
[INFO] [stderr]    |
[INFO] [stderr] 38 | /                             loop  {
[INFO] [stderr] 39 | |                                 match self.state {
[INFO] [stderr] 40 | |                                     0usize => {
[INFO] [stderr] 41 | |                                         self.state += 1;
[INFO] [stderr] ...  |
[INFO] [stderr] 53 | |                                 }
[INFO] [stderr] 54 | |                             }
[INFO] [stderr]    | |_____________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::never_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:42:56
[INFO] [stderr]    |
[INFO] [stderr] 42 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("id", &self.value.id))));
[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]    = 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: passing a unit value to a function
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:46:56
[INFO] [stderr]    |
[INFO] [stderr] 46 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("args", &self.value.args))));
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:50:56
[INFO] [stderr]    |
[INFO] [stderr] 50 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("source", &self.value.source))));
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: the operation is ineffective. Consider reducing it to `1`
[INFO] [stderr]   --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:57:63
[INFO] [stderr]    |
[INFO] [stderr] 57 |                         fn len(&self) -> Option<usize> { Some(0 + 1 + 1 + 1) }
[INFO] [stderr]    |                                                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_op)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] error: this loop never actually loops
[INFO] [stderr]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:97:29
[INFO] [stderr]     |
[INFO] [stderr] 97  | /                             loop  {
[INFO] [stderr] 98  | |                                 match self.state {
[INFO] [stderr] 99  | |                                     0usize => {
[INFO] [stderr] 100 | |                                         self.state += 1;
[INFO] [stderr] ...   |
[INFO] [stderr] 108 | |                                 }
[INFO] [stderr] 109 | |                             }
[INFO] [stderr]     | |_____________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#never_loop
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:101:56
[INFO] [stderr]     |
[INFO] [stderr] 101 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("message", &self.value.message))));
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:105:56
[INFO] [stderr]     |
[INFO] [stderr] 105 |                                         return Ok(Some(try!(_serializer.serialize_struct_elt("exception", &self.value.exception))));
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: the operation is ineffective. Consider reducing it to `1`
[INFO] [stderr]    --> /opt/crater/target/debug/build/cucumber-593bf46d457814be/out/event/response.rs:112:63
[INFO] [stderr]     |
[INFO] [stderr] 112 |                         fn len(&self) -> Option<usize> { Some(0 + 1 + 1) }
[INFO] [stderr]     |                                                               ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/event/response.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | /     match self {
[INFO] [stderr] 36 | |       &Response::StepMatches(ref response) => {
[INFO] [stderr] 37 | |         let empty_vec = Vec::new();
[INFO] [stderr] 38 | |         let body = match response {
[INFO] [stderr] ...  |
[INFO] [stderr] 59 | |       },
[INFO] [stderr] 60 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 35 |     match *self {
[INFO] [stderr] 36 |       Response::StepMatches(ref response) => {
[INFO] [stderr] 37 |         let empty_vec = Vec::new();
[INFO] [stderr] 38 |         let body = match response {
[INFO] [stderr] 39 |           &StepMatchesResponse::NoMatch => &empty_vec,
[INFO] [stderr] 40 |           &StepMatchesResponse::Match(ref steps) => steps,
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/event/response.rs:38:20
[INFO] [stderr]    |
[INFO] [stderr] 38 |           let body = match response {
[INFO] [stderr]    |  ____________________^
[INFO] [stderr] 39 | |           &StepMatchesResponse::NoMatch => &empty_vec,
[INFO] [stderr] 40 | |           &StepMatchesResponse::Match(ref steps) => steps,
[INFO] [stderr] 41 | |         };
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let body = match *response {
[INFO] [stderr] 39 |           StepMatchesResponse::NoMatch => &empty_vec,
[INFO] [stderr] 40 |           StepMatchesResponse::Match(ref steps) => steps,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/event/response.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 | /         match response {
[INFO] [stderr] 46 | |           &InvokeResponse::Pending(ref message) => {
[INFO] [stderr] 47 | |             s.serialize_seq(TupleVisitor2::new(&("pending", message)))
[INFO] [stderr] 48 | |           },
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |           },
[INFO] [stderr] 53 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 45 |         match *response {
[INFO] [stderr] 46 |           InvokeResponse::Pending(ref message) => {
[INFO] [stderr] 47 |             s.serialize_seq(TupleVisitor2::new(&("pending", message)))
[INFO] [stderr] 48 |           },
[INFO] [stderr] 49 |           InvokeResponse::Success => s.serialize_seq(Some(&("success"))),
[INFO] [stderr] 50 |           InvokeResponse::Fail(ref message) => {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: passing a unit value to a function
[INFO] [stderr]   --> src/event/response.rs:93:34
[INFO] [stderr]    |
[INFO] [stderr] 93 |           Some(ref v) => Ok(Some(try!(serializer.serialize_struct_elt("val", v.clone())))),
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]   --> src/event/response.rs:94:27
[INFO] [stderr]    |
[INFO] [stderr] 94 |           None => Ok(Some(try!(serializer.serialize_struct_elt("val", ())))),
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]    --> src/event/response.rs:100:34
[INFO] [stderr]     |
[INFO] [stderr] 100 |           Some(ref v) => Ok(Some(try!(serializer.serialize_struct_elt("pos", v.clone())))),
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]    --> src/event/response.rs:101:27
[INFO] [stderr]     |
[INFO] [stderr] 101 |           None => Ok(Some(try!(serializer.serialize_struct_elt("pos", ())))),
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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] error: aborting due to 7 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `cucumber`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "acd332d85bf69ad585866511e995b88f1cc4ddc15c1ef231feac89d1f5c815bd"`
[INFO] running `"docker" "rm" "-f" "acd332d85bf69ad585866511e995b88f1cc4ddc15c1ef231feac89d1f5c815bd"`
[INFO] [stdout] acd332d85bf69ad585866511e995b88f1cc4ddc15c1ef231feac89d1f5c815bd