[INFO] crate wasm-bindgen-cli-support 0.2.29 is already in cache
[INFO] extracting crate wasm-bindgen-cli-support 0.2.29 into work/ex/clippy-test-run/sources/stable/reg/wasm-bindgen-cli-support/0.2.29
[INFO] extracting crate wasm-bindgen-cli-support 0.2.29 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/wasm-bindgen-cli-support/0.2.29
[INFO] validating manifest of wasm-bindgen-cli-support-0.2.29 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wasm-bindgen-cli-support-0.2.29 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing wasm-bindgen-cli-support-0.2.29
[INFO] finished frobbing wasm-bindgen-cli-support-0.2.29
[INFO] frobbed toml for wasm-bindgen-cli-support-0.2.29 written to work/ex/clippy-test-run/sources/stable/reg/wasm-bindgen-cli-support/0.2.29/Cargo.toml
[INFO] started frobbing wasm-bindgen-cli-support-0.2.29
[INFO] finished frobbing wasm-bindgen-cli-support-0.2.29
[INFO] frobbed toml for wasm-bindgen-cli-support-0.2.29 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/wasm-bindgen-cli-support/0.2.29/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting wasm-bindgen-cli-support-0.2.29 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/wasm-bindgen-cli-support/0.2.29:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bbad5a7d2b094fce76d3ca54431407116d05e2908bb4da0c65f9c5d350f5b604
[INFO] running `"docker" "start" "-a" "bbad5a7d2b094fce76d3ca54431407116d05e2908bb4da0c65f9c5d350f5b604"`
[INFO] [stderr]     Checking parity-wasm v0.35.7
[INFO] [stderr]     Checking wasm-bindgen-wasm-interpreter v0.2.29
[INFO] [stderr]     Checking wasm-bindgen-threads-xform v0.2.29
[INFO] [stderr]     Checking wasm-bindgen-gc v0.2.29
[INFO] [stderr]     Checking wasm-bindgen-cli-support v0.2.29 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/decode.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         return ret;
[INFO] [stderr]   |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/decode.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     return r;
[INFO] [stderr]    |     ^^^^^^^^^ help: remove `return` as shown: `r`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/descriptor.rs:163:18
[INFO] [stderr]     |
[INFO] [stderr] 163 |             _ => return false,
[INFO] [stderr]     |                  ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/descriptor.rs:170:18
[INFO] [stderr]     |
[INFO] [stderr] 170 |             _ => return false,
[INFO] [stderr]     |                  ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/descriptor.rs:177:18
[INFO] [stderr]     |
[INFO] [stderr] 177 |             _ => return false,
[INFO] [stderr]     |                  ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/descriptor.rs:192:18
[INFO] [stderr]     |
[INFO] [stderr] 192 |             _ => return false,
[INFO] [stderr]     |                  ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/js/rust2js.rs:517:13
[INFO] [stderr]     |
[INFO] [stderr] 517 |             arg_idx: _,
[INFO] [stderr]     |             ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unneeded_field_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/js/rust2js.rs:518:13
[INFO] [stderr]     |
[INFO] [stderr] 518 |             cx: _,
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/js/rust2js.rs:519:13
[INFO] [stderr]     |
[INFO] [stderr] 519 |             global_idx: _,
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Rust2Js { catch, finally, js_arguments, prelude, ret_expr, variadic, shim_arguments, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/js/closures.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         return ret;
[INFO] [stderr]     |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/js/mod.rs:139:16
[INFO] [stderr]     |
[INFO] [stderr] 139 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 140 | |             if contents.starts_with("function") {
[INFO] [stderr] 141 | |                 format!("export function {}{}\n", name, &contents[8..])
[INFO] [stderr] 142 | |             } else if contents.starts_with("class") {
[INFO] [stderr] ...   |
[INFO] [stderr] 146 | |             }
[INFO] [stderr] 147 | |         };
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 139 |         } else if contents.starts_with("function") {
[INFO] [stderr] 140 |     format!("export function {}{}\n", name, &contents[8..])
[INFO] [stderr] 141 | } else if contents.starts_with("class") {
[INFO] [stderr] 142 |     format!("export {}\n", contents)
[INFO] [stderr] 143 | } else {
[INFO] [stderr] 144 |     format!("export const {} = {};\n", name, contents)
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/wasm2es6js.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     return exports;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `exports`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/wasm2es6js.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |         return ts;
[INFO] [stderr]     |         ^^^^^^^^^^ help: remove `return` as shown: `ts`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:84:9
[INFO] [stderr]    |
[INFO] [stderr] 84 |         return self;
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: remove `return` as shown: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:485:5
[INFO] [stderr]     |
[INFO] [stderr] 485 |     return dst;
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `dst`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/decode.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         return ret;
[INFO] [stderr]   |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/decode.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     return r;
[INFO] [stderr]    |     ^^^^^^^^^ help: remove `return` as shown: `r`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/descriptor.rs:163:18
[INFO] [stderr]     |
[INFO] [stderr] 163 |             _ => return false,
[INFO] [stderr]     |                  ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/descriptor.rs:170:18
[INFO] [stderr]     |
[INFO] [stderr] 170 |             _ => return false,
[INFO] [stderr]     |                  ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/descriptor.rs:177:18
[INFO] [stderr]     |
[INFO] [stderr] 177 |             _ => return false,
[INFO] [stderr]     |                  ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/descriptor.rs:192:18
[INFO] [stderr]     |
[INFO] [stderr] 192 |             _ => return false,
[INFO] [stderr]     |                  ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/js/rust2js.rs:517:13
[INFO] [stderr]     |
[INFO] [stderr] 517 |             arg_idx: _,
[INFO] [stderr]     |             ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unneeded_field_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/js/rust2js.rs:518:13
[INFO] [stderr]     |
[INFO] [stderr] 518 |             cx: _,
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: You matched a field with a wildcard pattern. Consider using `..` instead
[INFO] [stderr]    --> src/js/rust2js.rs:519:13
[INFO] [stderr]     |
[INFO] [stderr] 519 |             global_idx: _,
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Try with `Rust2Js { catch, finally, js_arguments, prelude, ret_expr, variadic, shim_arguments, .. }`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unneeded_field_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/js/closures.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         return ret;
[INFO] [stderr]     |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/js/mod.rs:139:16
[INFO] [stderr]     |
[INFO] [stderr] 139 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 140 | |             if contents.starts_with("function") {
[INFO] [stderr] 141 | |                 format!("export function {}{}\n", name, &contents[8..])
[INFO] [stderr] 142 | |             } else if contents.starts_with("class") {
[INFO] [stderr] ...   |
[INFO] [stderr] 146 | |             }
[INFO] [stderr] 147 | |         };
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 139 |         } else if contents.starts_with("function") {
[INFO] [stderr] 140 |     format!("export function {}{}\n", name, &contents[8..])
[INFO] [stderr] 141 | } else if contents.starts_with("class") {
[INFO] [stderr] 142 |     format!("export {}\n", contents)
[INFO] [stderr] 143 | } else {
[INFO] [stderr] 144 |     format!("export const {} = {};\n", name, contents)
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/wasm2es6js.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     return exports;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `exports`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/wasm2es6js.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |         return ts;
[INFO] [stderr]     |         ^^^^^^^^^^ help: remove `return` as shown: `ts`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:84:9
[INFO] [stderr]    |
[INFO] [stderr] 84 |         return self;
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: remove `return` as shown: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:485:5
[INFO] [stderr]     |
[INFO] [stderr] 485 |     return dst;
[INFO] [stderr]     |     ^^^^^^^^^^^ help: remove `return` as shown: `dst`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]  --> src/decode.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 |         assert!(data.len() == 0);
[INFO] [stderr]   |                 ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `data.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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/decode.rs:31:20
[INFO] [stderr]    |
[INFO] [stderr] 31 |             cur |= ((byte & 0x7f) as u32) << offset;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(byte & 0x7f)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/descriptor.rs:345:17
[INFO] [stderr]     |
[INFO] [stderr] 345 |     pub fn size(&self) -> usize {
[INFO] [stderr]     |                 ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:271:42
[INFO] [stderr]     |
[INFO] [stderr] 271 |                 self.rust_arguments.push(format!("0"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^ help: consider using .to_string(): `"0".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:418:42
[INFO] [stderr]     |
[INFO] [stderr] 418 |                 self.rust_arguments.push(format!("{}", name));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `name.to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[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: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:436:37
[INFO] [stderr]     |
[INFO] [stderr] 436 |                     self.ret_expr = format!("this.ptr = RET;");
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"this.ptr = RET;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:462:29
[INFO] [stderr]     |
[INFO] [stderr] 462 |             self.ret_expr = format!("return RET;");
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return RET;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:506:29
[INFO] [stderr]     |
[INFO] [stderr] 506 |             self.ret_expr = format!("return takeObject(RET);");
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return takeObject(RET);".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:618:29
[INFO] [stderr]     |
[INFO] [stderr] 618 |             self.ret_expr = format!("return getObject(RET);");
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return getObject(RET);".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:635:29
[INFO] [stderr]     |
[INFO] [stderr] 635 |             self.ret_expr = format!("return RET;");
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return RET;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:664:33
[INFO] [stderr]     |
[INFO] [stderr] 664 |                 self.ret_expr = format!("return (RET) !== 0;");
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return (RET) !== 0;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:668:33
[INFO] [stderr]     |
[INFO] [stderr] 668 |                 self.ret_expr = format!("return String.fromCodePoint(RET);")
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return String.fromCodePoint(RET);".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/js2rust.rs:711:24
[INFO] [stderr]     |
[INFO] [stderr] 711 |         let invoc = if self.finally.len() == 0 {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.finally.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/rust2js.rs:540:16
[INFO] [stderr]     |
[INFO] [stderr] 540 |             if self.shim_arguments.len() > 0 {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.shim_arguments.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/rust2js.rs:557:20
[INFO] [stderr]     |
[INFO] [stderr] 557 |                 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: length comparison to zero
[INFO] [stderr]    --> src/js/rust2js.rs:644:12
[INFO] [stderr]     |
[INFO] [stderr] 644 |         if self.finally.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.finally.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/js/closures.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     if info.element_removal_list.len() == 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `info.element_removal_list.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/js/closures.rs:157:33
[INFO] [stderr]     |
[INFO] [stderr] 157 |             remove.entry(entry).or_insert(HashSet::new()).insert(idx);
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(HashSet::new)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/closures.rs:182:20
[INFO] [stderr]     |
[INFO] [stderr] 182 |                 if current.len() > 0 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!current.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/closures.rs:192:16
[INFO] [stderr]     |
[INFO] [stderr] 192 |             if current.len() > 0 {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!current.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]  --> src/decode.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 |         assert!(data.len() == 0);
[INFO] [stderr]   |                 ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `data.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: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/decode.rs:31:20
[INFO] [stderr]    |
[INFO] [stderr] 31 |             cur |= ((byte & 0x7f) as u32) << offset;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(byte & 0x7f)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/mod.rs:413:16
[INFO] [stderr]     |
[INFO] [stderr] 413 |               Ok(format!(
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 414 | |                 "
[INFO] [stderr] 415 | |                 function() {{
[INFO] [stderr] 416 | |                     return addHeapObject(init.__wbindgen_wasm_module);
[INFO] [stderr] 417 | |                 }}
[INFO] [stderr] 418 | |                 ",
[INFO] [stderr] 419 | |             ))
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 413 |             Ok("
[INFO] [stderr] 414 |                 function() {{
[INFO] [stderr] 415 |                     return addHeapObject(init.__wbindgen_wasm_module);
[INFO] [stderr] 416 |                 }}
[INFO] [stderr] 417 |                 ".to_string())
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/js/mod.rs:491:42
[INFO] [stderr]     |
[INFO] [stderr] 491 |                 Some(l) if l.shared() => l.clone(),
[INFO] [stderr]     |                                          ^^^^^^^^^ help: try dereferencing it: `*l`
[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: length comparison to zero
[INFO] [stderr]    --> src/js/mod.rs:604:34
[INFO] [stderr]     |
[INFO] [stderr] 604 |             let import_wasm = if self.globals.len() == 0 {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.globals.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: useless use of `format!`
[INFO] [stderr]    --> src/js/mod.rs:609:17
[INFO] [stderr]     |
[INFO] [stderr] 609 |                 format!("var wasm;")
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"var wasm;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/mod.rs:937:22
[INFO] [stderr]     |
[INFO] [stderr] 937 |           self.global(&format!(
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 938 | |             "
[INFO] [stderr] 939 | |             function _assertNum(n) {{
[INFO] [stderr] 940 | |                 if (typeof(n) !== 'number') throw new Error('expected a number argument');
[INFO] [stderr] 941 | |             }}
[INFO] [stderr] 942 | |             "
[INFO] [stderr] 943 | |         ));
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 937 |         self.global(&"
[INFO] [stderr] 938 |             function _assertNum(n) {{
[INFO] [stderr] 939 |                 if (typeof(n) !== 'number') throw new Error('expected a number argument');
[INFO] [stderr] 940 |             }}
[INFO] [stderr] 941 |             ".to_string());
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/mod.rs:950:22
[INFO] [stderr]     |
[INFO] [stderr] 950 |           self.global(&format!(
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 951 | |             "
[INFO] [stderr] 952 | |             function _assertBoolean(n) {{
[INFO] [stderr] 953 | |                 if (typeof(n) !== 'boolean') {{
[INFO] [stderr] ...   |
[INFO] [stderr] 957 | |             "
[INFO] [stderr] 958 | |         ));
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 950 |         self.global(&"
[INFO] [stderr] 951 |             function _assertBoolean(n) {{
[INFO] [stderr] 952 |                 if (typeof(n) !== 'boolean') {{
[INFO] [stderr] 953 |                     throw new Error('expected a boolean argument');
[INFO] [stderr] 954 |                 }}
[INFO] [stderr] 955 |             }}
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/descriptor.rs:345:17
[INFO] [stderr]     |
[INFO] [stderr] 345 |     pub fn size(&self) -> usize {
[INFO] [stderr]     |                 ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]     --> src/js/mod.rs:1740:33
[INFO] [stderr]      |
[INFO] [stderr] 1740 |         self.memory_init = Some(mem.limits().clone());
[INFO] [stderr]      |                                 ^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*mem.limits()`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]     --> src/js/mod.rs:1805:32
[INFO] [stderr]      |
[INFO] [stderr] 1805 |                             if left.len() == 0 {
[INFO] [stderr]      |                                ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `left.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: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:271:42
[INFO] [stderr]     |
[INFO] [stderr] 271 |                 self.rust_arguments.push(format!("0"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^ help: consider using .to_string(): `"0".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]     --> src/js/mod.rs:1849:56
[INFO] [stderr]      |
[INFO] [stderr] 1849 |                 if import.structural || !name.contains(".") {
[INFO] [stderr]      |                                                        ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:418:42
[INFO] [stderr]     |
[INFO] [stderr] 418 |                 self.rust_arguments.push(format!("{}", name));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `name.to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[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: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:436:37
[INFO] [stderr]     |
[INFO] [stderr] 436 |                     self.ret_expr = format!("this.ptr = RET;");
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"this.ptr = RET;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:462:29
[INFO] [stderr]     |
[INFO] [stderr] 462 |             self.ret_expr = format!("return RET;");
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return RET;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]     --> src/js/mod.rs:2034:20
[INFO] [stderr]      |
[INFO] [stderr] 2034 |                 if data.len() != 0 {
[INFO] [stderr]      |                    ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!data.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: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:506:29
[INFO] [stderr]     |
[INFO] [stderr] 506 |             self.ret_expr = format!("return takeObject(RET);");
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return takeObject(RET);".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:618:29
[INFO] [stderr]     |
[INFO] [stderr] 618 |             self.ret_expr = format!("return getObject(RET);");
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return getObject(RET);".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:635:29
[INFO] [stderr]     |
[INFO] [stderr] 635 |             self.ret_expr = format!("return RET;");
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return RET;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:664:33
[INFO] [stderr]     |
[INFO] [stderr] 664 |                 self.ret_expr = format!("return (RET) !== 0;");
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return (RET) !== 0;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/js2rust.rs:668:33
[INFO] [stderr]     |
[INFO] [stderr] 668 |                 self.ret_expr = format!("return String.fromCodePoint(RET);")
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"return String.fromCodePoint(RET);".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/js2rust.rs:711:24
[INFO] [stderr]     |
[INFO] [stderr] 711 |         let invoc = if self.finally.len() == 0 {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.finally.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]     --> src/js/mod.rs:2307:14
[INFO] [stderr]      |
[INFO] [stderr] 2307 |             .or_insert(ExportedClass::default());
[INFO] [stderr]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(ExportedClass::default)`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]     --> src/js/mod.rs:2517:31
[INFO] [stderr]      |
[INFO] [stderr] 2517 |             if !dst.ends_with("\n") {
[INFO] [stderr]      |                               ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]     --> src/js/mod.rs:2546:12
[INFO] [stderr]      |
[INFO] [stderr] 2546 |         if info.vendor_prefixes.len() == 0 {
[INFO] [stderr]      |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `info.vendor_prefixes.is_empty()`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]     --> src/js/mod.rs:2551:14
[INFO] [stderr]      |
[INFO] [stderr] 2551 |             .or_insert(Vec::new())
[INFO] [stderr]      |              ^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(Vec::new)`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]     --> src/js/mod.rs:2577:21
[INFO] [stderr]      |
[INFO] [stderr] 2577 |             assert!(vendor_prefixes.len() > 0);
[INFO] [stderr]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!vendor_prefixes.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: you should consider deriving a `Default` implementation for `wasm2es6js::Config`
[INFO] [stderr]   --> src/wasm2es6js.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | /     pub fn new() -> Config {
[INFO] [stderr] 22 | |         Config {
[INFO] [stderr] 23 | |             base64: false,
[INFO] [stderr] 24 | |             fetch_path: None,
[INFO] [stderr] 25 | |         }
[INFO] [stderr] 26 | |     }
[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] 9  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/wasm2es6js.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |         if !self.base64 && !self.fetch_path.is_some() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!self.base64 && self.fetch_path.is_none()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/wasm2es6js.rs:52:23
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let mut exports = format!("/* tslint:disable */\n");
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"/* tslint:disable */\n".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match to destructure a single infallible pattern. Consider using `let`
[INFO] [stderr]   --> src/wasm2es6js.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 | /             let ty = match types.types()[idx as usize] {
[INFO] [stderr] 98 | |                 Type::Function(ref f) => f,
[INFO] [stderr] 99 | |             };
[INFO] [stderr]    | |______________^ help: try this: `let Type::Function(ty) = types.types()[idx as usize];`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::infallible_destructuring_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#infallible_destructuring_match
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/rust2js.rs:540:16
[INFO] [stderr]     |
[INFO] [stderr] 540 |             if self.shim_arguments.len() > 0 {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.shim_arguments.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/rust2js.rs:557:20
[INFO] [stderr]     |
[INFO] [stderr] 557 |                 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: length comparison to zero
[INFO] [stderr]    --> src/js/rust2js.rs:644:12
[INFO] [stderr]     |
[INFO] [stderr] 644 |         if self.finally.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.finally.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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/wasm_utils.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 | /         match entry.internal_mut() {
[INFO] [stderr] 34 | |             Internal::Function(i) => {
[INFO] [stderr] 35 | |                 self.remap_idx(i);
[INFO] [stderr] 36 | |             }
[INFO] [stderr] 37 | |             _ => {}
[INFO] [stderr] 38 | |         }
[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] 33 |         if let Internal::Function(i) = entry.internal_mut() {
[INFO] [stderr] 34 |     self.remap_idx(i);
[INFO] [stderr] 35 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/js/closures.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     if info.element_removal_list.len() == 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `info.element_removal_list.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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/wasm_utils.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 | /         match instr {
[INFO] [stderr] 71 | |             Instruction::Call(i) => {
[INFO] [stderr] 72 | |                 self.remap_idx(i);
[INFO] [stderr] 73 | |             }
[INFO] [stderr] 74 | |             _ => {}
[INFO] [stderr] 75 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[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] 70 |         if let Instruction::Call(i) = instr {
[INFO] [stderr] 71 |     self.remap_idx(i);
[INFO] [stderr] 72 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `Bindgen`
[INFO] [stderr]   --> src/lib.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 | /     pub fn new() -> Bindgen {
[INFO] [stderr] 57 | |         Bindgen {
[INFO] [stderr] 58 | |             input: Input::None,
[INFO] [stderr] 59 | |             nodejs: false,
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |         }
[INFO] [stderr] 73 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 55 | impl Default for Bindgen {
[INFO] [stderr] 56 |     fn default() -> Self {
[INFO] [stderr] 57 |         Self::new()
[INFO] [stderr] 58 |     }
[INFO] [stderr] 59 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/js/closures.rs:157:33
[INFO] [stderr]     |
[INFO] [stderr] 157 |             remove.entry(entry).or_insert(HashSet::new()).insert(idx);
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(HashSet::new)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/closures.rs:182:20
[INFO] [stderr]     |
[INFO] [stderr] 182 |                 if current.len() > 0 {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!current.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/js/closures.rs:192:16
[INFO] [stderr]     |
[INFO] [stderr] 192 |             if current.len() > 0 {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!current.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: useless use of `format!`
[INFO] [stderr]    --> src/lib.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 |                 typescript: format!("/* tslint:disable */\n"),
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"/* tslint:disable */\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib.rs:307:24
[INFO] [stderr]     |
[INFO] [stderr] 307 |           shim.push_str(&format!(
[INFO] [stderr]     |  ________________________^
[INFO] [stderr] 308 | |             "
[INFO] [stderr] 309 | |                 const wasmModule = new WebAssembly.Module(bytes);
[INFO] [stderr] 310 | |                 const wasmInstance = new WebAssembly.Instance(wasmModule, imports);
[INFO] [stderr] 311 | |             ",
[INFO] [stderr] 312 | |         ));
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 307 |         shim.push_str(&"
[INFO] [stderr] 308 |                 const wasmModule = new WebAssembly.Module(bytes);
[INFO] [stderr] 309 |                 const wasmInstance = new WebAssembly.Instance(wasmModule, imports);
[INFO] [stderr] 310 |             ".to_string());
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:411:8
[INFO] [stderr]     |
[INFO] [stderr] 411 |     if data.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `data.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `(data[0] as usize)`
[INFO] [stderr]    --> src/lib.rs:414:15
[INFO] [stderr]     |
[INFO] [stderr] 414 |     let len = ((data[0] as usize) << 0)
[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] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/lib.rs:423:1
[INFO] [stderr]     |
[INFO] [stderr] 423 | / fn verify_schema_matches<'a>(data: &'a [u8]) -> Result<Option<&'a str>, Error> {
[INFO] [stderr] 424 | |     macro_rules! bad {
[INFO] [stderr] 425 | |         () => {
[INFO] [stderr] 426 | |             bail!("failed to decode what looked like wasm-bindgen data")
[INFO] [stderr] ...   |
[INFO] [stderr] 457 | |     Ok(Some(their_version))
[INFO] [stderr] 458 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:433:26
[INFO] [stderr]     |
[INFO] [stderr] 433 |     if !data.starts_with("{") || !data.ends_with("}") {
[INFO] [stderr]     |                          ^^^ help: try using a char instead: `'{'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:433:50
[INFO] [stderr]     |
[INFO] [stderr] 433 |     if !data.starts_with("{") || !data.ends_with("}") {
[INFO] [stderr]     |                                                  ^^^ help: try using a char instead: `'}'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:441:48
[INFO] [stderr]     |
[INFO] [stderr] 441 |     let their_schema_version = match rest.find("\"") {
[INFO] [stderr]     |                                                ^^^^ help: try using a char instead: `'\"'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:453:41
[INFO] [stderr]     |
[INFO] [stderr] 453 |     let their_version = match rest.find("\"") {
[INFO] [stderr]     |                                         ^^^^ help: try using a char instead: `'\"'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/mod.rs:413:16
[INFO] [stderr]     |
[INFO] [stderr] 413 |               Ok(format!(
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 414 | |                 "
[INFO] [stderr] 415 | |                 function() {{
[INFO] [stderr] 416 | |                     return addHeapObject(init.__wbindgen_wasm_module);
[INFO] [stderr] 417 | |                 }}
[INFO] [stderr] 418 | |                 ",
[INFO] [stderr] 419 | |             ))
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 413 |             Ok("
[INFO] [stderr] 414 |                 function() {{
[INFO] [stderr] 415 |                     return addHeapObject(init.__wbindgen_wasm_module);
[INFO] [stderr] 416 |                 }}
[INFO] [stderr] 417 |                 ".to_string())
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/js/mod.rs:491:42
[INFO] [stderr]     |
[INFO] [stderr] 491 |                 Some(l) if l.shared() => l.clone(),
[INFO] [stderr]     |                                          ^^^^^^^^^ help: try dereferencing it: `*l`
[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: length comparison to zero
[INFO] [stderr]    --> src/js/mod.rs:604:34
[INFO] [stderr]     |
[INFO] [stderr] 604 |             let import_wasm = if self.globals.len() == 0 {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.globals.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: useless use of `format!`
[INFO] [stderr]    --> src/js/mod.rs:609:17
[INFO] [stderr]     |
[INFO] [stderr] 609 |                 format!("var wasm;")
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"var wasm;".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/mod.rs:937:22
[INFO] [stderr]     |
[INFO] [stderr] 937 |           self.global(&format!(
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 938 | |             "
[INFO] [stderr] 939 | |             function _assertNum(n) {{
[INFO] [stderr] 940 | |                 if (typeof(n) !== 'number') throw new Error('expected a number argument');
[INFO] [stderr] 941 | |             }}
[INFO] [stderr] 942 | |             "
[INFO] [stderr] 943 | |         ));
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 937 |         self.global(&"
[INFO] [stderr] 938 |             function _assertNum(n) {{
[INFO] [stderr] 939 |                 if (typeof(n) !== 'number') throw new Error('expected a number argument');
[INFO] [stderr] 940 |             }}
[INFO] [stderr] 941 |             ".to_string());
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/js/mod.rs:950:22
[INFO] [stderr]     |
[INFO] [stderr] 950 |           self.global(&format!(
[INFO] [stderr]     |  ______________________^
[INFO] [stderr] 951 | |             "
[INFO] [stderr] 952 | |             function _assertBoolean(n) {{
[INFO] [stderr] 953 | |                 if (typeof(n) !== 'boolean') {{
[INFO] [stderr] ...   |
[INFO] [stderr] 957 | |             "
[INFO] [stderr] 958 | |         ));
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 950 |         self.global(&"
[INFO] [stderr] 951 |             function _assertBoolean(n) {{
[INFO] [stderr] 952 |                 if (typeof(n) !== 'boolean') {{
[INFO] [stderr] 953 |                     throw new Error('expected a boolean argument');
[INFO] [stderr] 954 |                 }}
[INFO] [stderr] 955 |             }}
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]     --> src/js/mod.rs:1740:33
[INFO] [stderr]      |
[INFO] [stderr] 1740 |         self.memory_init = Some(mem.limits().clone());
[INFO] [stderr]      |                                 ^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*mem.limits()`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]     --> src/js/mod.rs:1805:32
[INFO] [stderr]      |
[INFO] [stderr] 1805 |                             if left.len() == 0 {
[INFO] [stderr]      |                                ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `left.is_empty()`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]     --> src/js/mod.rs:1849:56
[INFO] [stderr]      |
[INFO] [stderr] 1849 |                 if import.structural || !name.contains(".") {
[INFO] [stderr]      |                                                        ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]     --> src/js/mod.rs:2034:20
[INFO] [stderr]      |
[INFO] [stderr] 2034 |                 if data.len() != 0 {
[INFO] [stderr]      |                    ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!data.is_empty()`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]     --> src/js/mod.rs:2307:14
[INFO] [stderr]      |
[INFO] [stderr] 2307 |             .or_insert(ExportedClass::default());
[INFO] [stderr]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(ExportedClass::default)`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]     --> src/js/mod.rs:2517:31
[INFO] [stderr]      |
[INFO] [stderr] 2517 |             if !dst.ends_with("\n") {
[INFO] [stderr]      |                               ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]     --> src/js/mod.rs:2546:12
[INFO] [stderr]      |
[INFO] [stderr] 2546 |         if info.vendor_prefixes.len() == 0 {
[INFO] [stderr]      |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `info.vendor_prefixes.is_empty()`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]     --> src/js/mod.rs:2551:14
[INFO] [stderr]      |
[INFO] [stderr] 2551 |             .or_insert(Vec::new())
[INFO] [stderr]      |              ^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(Vec::new)`
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]     --> src/js/mod.rs:2577:21
[INFO] [stderr]      |
[INFO] [stderr] 2577 |             assert!(vendor_prefixes.len() > 0);
[INFO] [stderr]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!vendor_prefixes.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: you should consider deriving a `Default` implementation for `wasm2es6js::Config`
[INFO] [stderr]   --> src/wasm2es6js.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | /     pub fn new() -> Config {
[INFO] [stderr] 22 | |         Config {
[INFO] [stderr] 23 | |             base64: false,
[INFO] [stderr] 24 | |             fetch_path: None,
[INFO] [stderr] 25 | |         }
[INFO] [stderr] 26 | |     }
[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] 9  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/wasm2es6js.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |         if !self.base64 && !self.fetch_path.is_some() {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!self.base64 && self.fetch_path.is_none()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/wasm2es6js.rs:52:23
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let mut exports = format!("/* tslint:disable */\n");
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"/* tslint:disable */\n".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match to destructure a single infallible pattern. Consider using `let`
[INFO] [stderr]   --> src/wasm2es6js.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 | /             let ty = match types.types()[idx as usize] {
[INFO] [stderr] 98 | |                 Type::Function(ref f) => f,
[INFO] [stderr] 99 | |             };
[INFO] [stderr]    | |______________^ help: try this: `let Type::Function(ty) = types.types()[idx as usize];`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::infallible_destructuring_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#infallible_destructuring_match
[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/wasm_utils.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 | /         match entry.internal_mut() {
[INFO] [stderr] 34 | |             Internal::Function(i) => {
[INFO] [stderr] 35 | |                 self.remap_idx(i);
[INFO] [stderr] 36 | |             }
[INFO] [stderr] 37 | |             _ => {}
[INFO] [stderr] 38 | |         }
[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] 33 |         if let Internal::Function(i) = entry.internal_mut() {
[INFO] [stderr] 34 |     self.remap_idx(i);
[INFO] [stderr] 35 | }
[INFO] [stderr]    |
[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/wasm_utils.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 | /         match instr {
[INFO] [stderr] 71 | |             Instruction::Call(i) => {
[INFO] [stderr] 72 | |                 self.remap_idx(i);
[INFO] [stderr] 73 | |             }
[INFO] [stderr] 74 | |             _ => {}
[INFO] [stderr] 75 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[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] 70 |         if let Instruction::Call(i) = instr {
[INFO] [stderr] 71 |     self.remap_idx(i);
[INFO] [stderr] 72 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `Bindgen`
[INFO] [stderr]   --> src/lib.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 | /     pub fn new() -> Bindgen {
[INFO] [stderr] 57 | |         Bindgen {
[INFO] [stderr] 58 | |             input: Input::None,
[INFO] [stderr] 59 | |             nodejs: false,
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |         }
[INFO] [stderr] 73 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 55 | impl Default for Bindgen {
[INFO] [stderr] 56 |     fn default() -> Self {
[INFO] [stderr] 57 |         Self::new()
[INFO] [stderr] 58 |     }
[INFO] [stderr] 59 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 |                 typescript: format!("/* tslint:disable */\n"),
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"/* tslint:disable */\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/lib.rs:307:24
[INFO] [stderr]     |
[INFO] [stderr] 307 |           shim.push_str(&format!(
[INFO] [stderr]     |  ________________________^
[INFO] [stderr] 308 | |             "
[INFO] [stderr] 309 | |                 const wasmModule = new WebAssembly.Module(bytes);
[INFO] [stderr] 310 | |                 const wasmInstance = new WebAssembly.Instance(wasmModule, imports);
[INFO] [stderr] 311 | |             ",
[INFO] [stderr] 312 | |         ));
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 307 |         shim.push_str(&"
[INFO] [stderr] 308 |                 const wasmModule = new WebAssembly.Module(bytes);
[INFO] [stderr] 309 |                 const wasmInstance = new WebAssembly.Instance(wasmModule, imports);
[INFO] [stderr] 310 |             ".to_string());
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:411:8
[INFO] [stderr]     |
[INFO] [stderr] 411 |     if data.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `data.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `(data[0] as usize)`
[INFO] [stderr]    --> src/lib.rs:414:15
[INFO] [stderr]     |
[INFO] [stderr] 414 |     let len = ((data[0] as usize) << 0)
[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] warning: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
[INFO] [stderr]    --> src/lib.rs:423:1
[INFO] [stderr]     |
[INFO] [stderr] 423 | / fn verify_schema_matches<'a>(data: &'a [u8]) -> Result<Option<&'a str>, Error> {
[INFO] [stderr] 424 | |     macro_rules! bad {
[INFO] [stderr] 425 | |         () => {
[INFO] [stderr] 426 | |             bail!("failed to decode what looked like wasm-bindgen data")
[INFO] [stderr] ...   |
[INFO] [stderr] 457 | |     Ok(Some(their_version))
[INFO] [stderr] 458 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:433:26
[INFO] [stderr]     |
[INFO] [stderr] 433 |     if !data.starts_with("{") || !data.ends_with("}") {
[INFO] [stderr]     |                          ^^^ help: try using a char instead: `'{'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:433:50
[INFO] [stderr]     |
[INFO] [stderr] 433 |     if !data.starts_with("{") || !data.ends_with("}") {
[INFO] [stderr]     |                                                  ^^^ help: try using a char instead: `'}'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:441:48
[INFO] [stderr]     |
[INFO] [stderr] 441 |     let their_schema_version = match rest.find("\"") {
[INFO] [stderr]     |                                                ^^^^ help: try using a char instead: `'\"'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:453:41
[INFO] [stderr]     |
[INFO] [stderr] 453 |     let their_version = match rest.find("\"") {
[INFO] [stderr]     |                                         ^^^^ help: try using a char instead: `'\"'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.75s
[INFO] running `"docker" "inspect" "bbad5a7d2b094fce76d3ca54431407116d05e2908bb4da0c65f9c5d350f5b604"`
[INFO] running `"docker" "rm" "-f" "bbad5a7d2b094fce76d3ca54431407116d05e2908bb4da0c65f9c5d350f5b604"`
[INFO] [stdout] bbad5a7d2b094fce76d3ca54431407116d05e2908bb4da0c65f9c5d350f5b604