[INFO] updating cached repository luciusmagn/nary-lang
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/luciusmagn/nary-lang
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/luciusmagn/nary-lang" "work/ex/clippy-test-run/sources/stable/gh/luciusmagn/nary-lang"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/luciusmagn/nary-lang'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/luciusmagn/nary-lang" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/luciusmagn/nary-lang"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/luciusmagn/nary-lang'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8eeb6249ee849d1efc90f8729434c23d44661807
[INFO] sha for GitHub repo luciusmagn/nary-lang: 8eeb6249ee849d1efc90f8729434c23d44661807
[INFO] validating manifest of luciusmagn/nary-lang 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 luciusmagn/nary-lang 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 luciusmagn/nary-lang
[INFO] finished frobbing luciusmagn/nary-lang
[INFO] frobbed toml for luciusmagn/nary-lang written to work/ex/clippy-test-run/sources/stable/gh/luciusmagn/nary-lang/Cargo.toml
[INFO] started frobbing luciusmagn/nary-lang
[INFO] finished frobbing luciusmagn/nary-lang
[INFO] frobbed toml for luciusmagn/nary-lang written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/luciusmagn/nary-lang/Cargo.toml
[INFO] crate luciusmagn/nary-lang has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting luciusmagn/nary-lang against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/luciusmagn/nary-lang:/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] 1173bd5fd4afd55060e9a48a778b09daeaac042ed87ad7b35c5bdf1b5442d0b5
[INFO] running `"docker" "start" "-a" "1173bd5fd4afd55060e9a48a778b09daeaac042ed87ad7b35c5bdf1b5442d0b5"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/crater/workdir/examples/custom_types_and_methods.rs
[INFO] [stderr]     Checking nary v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: lint name `type_complexity` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr] warning: lint name `type_complexity` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]  --> src/lib.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![allow(type_complexity)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^ help: change it to: `clippy::type_complexity`
[INFO] [stderr]  --> src/lib.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![allow(type_complexity)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^ help: change it to: `clippy::type_complexity`
[INFO] [stderr]   |
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr]   = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: lint name `too_many_arguments` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]  --> src/lib.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![allow(too_many_arguments)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^^^ help: change it to: `clippy::too_many_arguments`
[INFO] [stderr] 
[INFO] [stderr] warning: lint name `new_without_default` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]  --> src/lib.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![allow(new_without_default)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^^^^ help: change it to: `clippy::new_without_default`
[INFO] [stderr] warning: lint name `too_many_arguments` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]  --> src/lib.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![allow(too_many_arguments)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^^^ help: change it to: `clippy::too_many_arguments`
[INFO] [stderr] 
[INFO] [stderr] warning: lint name `new_without_default` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]  --> src/lib.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![allow(new_without_default)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^^^^ help: change it to: `clippy::new_without_default`
[INFO] [stderr] 
[INFO] [stderr] warning: lint name `needless_pass_by_value` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]  --> src/lib.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![allow(needless_pass_by_value)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^^^^^^^ help: change it to: `clippy::needless_pass_by_value`
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: lint name `needless_pass_by_value` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]  --> src/lib.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![allow(needless_pass_by_value)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^^^^^^^ help: change it to: `clippy::needless_pass_by_value`
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/fn_register.rs:47:47
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 (Some(b), Some(c), Some(d), Some(e), Some(f), Some(g)) =>
[INFO] [stderr]    |                                                           ^
[INFO] [stderr]    |
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]   --> src/fn_register.rs:47:47
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 (Some(b), Some(c), Some(d), Some(e), Some(f), Some(g)) =>
[INFO] [stderr]    |                                                           ^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/fn_register.rs:47:56
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 (Some(b), Some(c), Some(d), Some(e), Some(f), Some(g)) =>
[INFO] [stderr]    |                                                                    ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/fn_register.rs:47:56
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 (Some(b), Some(c), Some(d), Some(e), Some(f), Some(g)) =>
[INFO] [stderr]    |                                                                    ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/fn_register.rs:95:47
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 (Some(b), Some(c), Some(d), Some(e), Some(f), Some(g)) =>
[INFO] [stderr]    |                                                           ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/fn_register.rs:95:56
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 (Some(b), Some(c), Some(d), Some(e), Some(f), Some(g)) =>
[INFO] [stderr]    |                                                                    ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/fn_register.rs:143:47
[INFO] [stderr]     |
[INFO] [stderr] 143 |                 (Some(b), Some(c), Some(d), Some(e), Some(f)) =>
[INFO] [stderr]     |                                                           ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/fn_register.rs:186:47
[INFO] [stderr]     |
[INFO] [stderr] 186 |                 (Some(b), Some(c), Some(d), Some(e), Some(f)) =>
[INFO] [stderr]     |                                                           ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]     --> src/parser.rs:1057:9
[INFO] [stderr]      |
[INFO] [stderr] 1057 |            name: name,
[INFO] [stderr]      |            ^^^^^^^^^^ help: replace it with: `name`
[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/parser.rs:1058:9
[INFO] [stderr]      |
[INFO] [stderr] 1058 |            params: params,
[INFO] [stderr]      |            ^^^^^^^^^^^^^^ help: replace it with: `params`
[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: 5th binding whose name is just one char
[INFO] [stderr]   --> src/fn_register.rs:95:47
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 (Some(b), Some(c), Some(d), Some(e), Some(f), Some(g)) =>
[INFO] [stderr]    |                                                           ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/fn_register.rs:95:56
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 (Some(b), Some(c), Some(d), Some(e), Some(f), Some(g)) =>
[INFO] [stderr]    |                                                                    ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/fn_register.rs:143:47
[INFO] [stderr]     |
[INFO] [stderr] 143 |                 (Some(b), Some(c), Some(d), Some(e), Some(f)) =>
[INFO] [stderr]     |                                                           ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]    --> src/fn_register.rs:186:47
[INFO] [stderr]     |
[INFO] [stderr] 186 |                 (Some(b), Some(c), Some(d), Some(e), Some(f)) =>
[INFO] [stderr]     |                                                           ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]     --> src/parser.rs:1057:9
[INFO] [stderr]      |
[INFO] [stderr] 1057 |            name: name,
[INFO] [stderr]      |            ^^^^^^^^^^ help: replace it with: `name`
[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/parser.rs:1058:9
[INFO] [stderr]      |
[INFO] [stderr] 1058 |            params: params,
[INFO] [stderr]      |            ^^^^^^^^^^^^^^ help: replace it with: `params`
[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: lint name `type_complexity` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]  --> src/lib.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![allow(type_complexity)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^ help: change it to: `clippy::type_complexity`
[INFO] [stderr] 
[INFO] [stderr] warning: lint name `type_complexity` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
[INFO] [stderr]  --> src/lib.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![allow(type_complexity)]
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^ help: change it to: `clippy::type_complexity`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1483 |         reg_op!(engine, "+", add, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1483 |         reg_op!(engine, "+", add, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1484 |         reg_op!(engine, "-", sub, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1485 |         reg_op!(engine, "*", mul, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1486 |         reg_op!(engine, "/", div, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1487 |         reg_op!(engine, "%", rem, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1489 |         reg_cmp!(engine, "<", lt, i32, i64, u32, u64, String);
[INFO] [stderr]      |         ------------------------------------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1490 |         reg_cmp!(engine, "<=", lte, i32, i64, u32, u64, String);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1491 |         reg_cmp!(engine, ">", gt, i32, i64, u32, u64, String);
[INFO] [stderr]      |         ------------------------------------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1492 |         reg_cmp!(engine, ">=", gte, i32, i64, u32, u64, String);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1493 |         reg_cmp!(engine, "==", eq, i32, i64, u32, u64, bool, String);
[INFO] [stderr]      |         ------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1494 |         reg_cmp!(engine, "!=", ne, i32, i64, u32, u64, bool, String);
[INFO] [stderr]      |         ------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1496 |         reg_op!(engine, "||", or, bool);
[INFO] [stderr]      |         -------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1497 |         reg_op!(engine, "&&", and, bool);
[INFO] [stderr]      |         --------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1483 |         reg_op!(engine, "+", add, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1483 |         reg_op!(engine, "+", add, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1484 |         reg_op!(engine, "-", sub, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1485 |         reg_op!(engine, "*", mul, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1486 |         reg_op!(engine, "/", div, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1487 |         reg_op!(engine, "%", rem, i32, i64, u32, u64, f32, f64);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1489 |         reg_cmp!(engine, "<", lt, i32, i64, u32, u64, String);
[INFO] [stderr]      |         ------------------------------------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1490 |         reg_cmp!(engine, "<=", lte, i32, i64, u32, u64, String);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1491 |         reg_cmp!(engine, ">", gt, i32, i64, u32, u64, String);
[INFO] [stderr]      |         ------------------------------------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1492 |         reg_cmp!(engine, ">=", gte, i32, i64, u32, u64, String);
[INFO] [stderr]      |         -------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1493 |         reg_cmp!(engine, "==", eq, i32, i64, u32, u64, bool, String);
[INFO] [stderr]      |         ------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1463:45
[INFO] [stderr]      |
[INFO] [stderr] 1463 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->bool));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1494 |         reg_cmp!(engine, "!=", ne, i32, i64, u32, u64, bool, String);
[INFO] [stderr]      |         ------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1496 |         reg_op!(engine, "||", or, bool);
[INFO] [stderr]      |         -------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]     --> src/engine.rs:1455:45
[INFO] [stderr]      |
[INFO] [stderr] 1455 |                     $engine.register_fn($x, ($op as fn(x: $y, y: $y)->$y));
[INFO] [stderr]      |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 1497 |         reg_op!(engine, "&&", and, bool);
[INFO] [stderr]      |         --------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]    --> src/tests.rs:186:9
[INFO] [stderr]     |
[INFO] [stderr] 186 |       if let Ok(_) = engine.eval_with_scope::<()>(&mut scope, "let x = 4 + 5")
[INFO] [stderr]     |  _____-      ^^^^^
[INFO] [stderr] 187 | |     {
[INFO] [stderr] 188 | |     }
[INFO] [stderr] 189 | |     else
[INFO] [stderr] 190 | |     {
[INFO] [stderr] 191 | |         assert!(false);
[INFO] [stderr] 192 | |     }
[INFO] [stderr]     | |_____- help: try this: `if engine.eval_with_scope::<()>(&mut scope, "let x = 4 + 5").is_ok()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]    --> src/tests.rs:203:9
[INFO] [stderr]     |
[INFO] [stderr] 203 |       if let Ok(_) = engine.eval_with_scope::<()>(&mut scope, "x = x + 1; x = x + 2;")
[INFO] [stderr]     |  _____-      ^^^^^
[INFO] [stderr] 204 | |     {
[INFO] [stderr] 205 | |     }
[INFO] [stderr] 206 | |     else
[INFO] [stderr] 207 | |     {
[INFO] [stderr] 208 | |         assert!(false);
[INFO] [stderr] 209 | |     }
[INFO] [stderr]     | |_____- help: try this: `if engine.eval_with_scope::<()>(&mut scope, "x = x + 1; x = x + 2;").is_ok()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_ok()`
[INFO] [stderr]    --> src/tests.rs:220:9
[INFO] [stderr]     |
[INFO] [stderr] 220 |       if let Ok(_) = engine.eval_with_scope::<()>(&mut scope, "{let x = 3}")
[INFO] [stderr]     |  _____-      ^^^^^
[INFO] [stderr] 221 | |     {
[INFO] [stderr] 222 | |     }
[INFO] [stderr] 223 | |     else
[INFO] [stderr] 224 | |     {
[INFO] [stderr] 225 | |         assert!(false);
[INFO] [stderr] 226 | |     }
[INFO] [stderr]     | |_____- help: try this: `if engine.eval_with_scope::<()>(&mut scope, "{let x = 3}").is_ok()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]  --> examples/nary_runner.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn showit<T: Display>(x: &mut T) -> ()
[INFO] [stderr]   |                                  ^^^^^ help: remove the `-> ()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]  --> examples/nary_runner.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn showit<T: Display>(x: &mut T) -> ()
[INFO] [stderr]   |                                  ^^^^^ help: remove the `-> ()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]  --> examples/nary_runner.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn showit<T: Display>(x: &mut T) -> ()
[INFO] [stderr]   |                                  ^^^^^ help: remove the `-> ()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.47s
[INFO] running `"docker" "inspect" "1173bd5fd4afd55060e9a48a778b09daeaac042ed87ad7b35c5bdf1b5442d0b5"`
[INFO] running `"docker" "rm" "-f" "1173bd5fd4afd55060e9a48a778b09daeaac042ed87ad7b35c5bdf1b5442d0b5"`
[INFO] [stdout] 1173bd5fd4afd55060e9a48a778b09daeaac042ed87ad7b35c5bdf1b5442d0b5