Merging upstream version 1.70.0+dfsg2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

45 files changed, 1279 insertions, 0 deletions

diff --git a/vendor/wasm-bindgen-macro/.cargo-checksum.json b/vendor/wasm-bindgen-macro/.cargo-checksum.json
new file mode 100644
index 000000000..b28610651
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"377c6fe534700370a86f95dffbd82e3cad703a69286dd927afac58bc8b9afc57","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"378f5840b258e2779c39418f3f2d7b2ba96f1c7917dd6be0713f88305dbda397","README.md":"ef5ffff199bf75993b81c3c1de8dbe19babb22b89170763323fa11a85c62f045","src/lib.rs":"2b63b3cf46acde23d9822773c231c110ffa1edf9697e308c90d2eb1bb41464f4","tests/ui.rs":"aed1b0f4e8c99b06657c54f3a74de4b3535ce567fb20e4d2fc6911b361c3d934","ui-tests/async-errors.rs":"f3ab249b3741b38c6213651a5cd36f8b9873bad34bd49d13b780d21bed47272b","ui-tests/async-errors.stderr":"68a547c3b7107c0ddcab4f15729752dee3af781203126daa3b350f2047093faf","ui-tests/attribute-fails-to-parse.rs":"c21c2a250534ca7e80fc462804efc0db8a71b6b0cdb0c57c5cab444d081f68de","ui-tests/attribute-fails-to-parse.stderr":"3bc77befbbe7e2d0744dd81067a75cb70c3f2d8bd9c60ec5bcb2dfb65fc1a593","ui-tests/bad-signatures.rs":"96b53e9327cc75747510b548b97cff86429532d5cdf65cc991211bca5646abc2","ui-tests/bad-signatures.stderr":"931e934ccbc43e4cee41a46ecaa3953c3ccdef69450519a838b9af428f75fa72","ui-tests/import-local.rs":"783ef9ebb792111ec7fd335cbc4f684381609c86c0af660fd5ab35cf04cacbf4","ui-tests/import-local.stderr":"6e90ad05c3783d7c69ff4e156458c63ee45ceb7ea8ebc38e1ca52e7f46e8bcf8","ui-tests/invalid-attr.rs":"603cf0bcb95a42a35e535a7d9577dc8c5e6175af4cd27d83fdf77cd6b67acf48","ui-tests/invalid-attr.stderr":"e1fd9450e16f1d672cb708bcbaf99a07f916c48d3e961c1dd1e92bd835d3ec53","ui-tests/invalid-enums.rs":"bf473e1bbafbcde82c946311e824d97bd1f941cfc5c1495025d8a7a513b90a19","ui-tests/invalid-enums.stderr":"ecd549ab69e7d7d645922857e2a83b7171f97a276afeb9f113407a4181b2b9e2","ui-tests/invalid-imports.rs":"452e9df87229ebea5442f384b0bd27a2c082d731a3b99fc7617e9a583392cf3a","ui-tests/invalid-imports.stderr":"4f59f109ec9d5acacf5f22f1467dca7d81e6dbabde95e7bd025ef330c275774a","ui-tests/invalid-items.rs":"ca919f7fe6c0d9fd4218ec43c85d7b43f478ed3042959479eb42adc23f4edf02","ui-tests/invalid-items.stderr":"a7392f1b918cac6eda3cefa5244dc555e4b6332836cab0bbd341b992672cd064","ui-tests/invalid-methods.rs":"c463bee9962d936ef2aeb4051ebc5558c0b7fefe6e459f3a325482763746969f","ui-tests/invalid-methods.stderr":"9666dcd88bc3824b7f7e75093f16a298cb3ba726cc67bc7bd70d698648201fe4","ui-tests/invalid-setter.rs":"db9666df889b58246a51ebc7d753e41ac4382475257a589499a4e886e6fbc45f","ui-tests/invalid-setter.stderr":"d1629836ec39727bfa4737538e9f991cda6fbaeb1c0f8c878cb13757e66daac5","ui-tests/missing-catch.rs":"705bf784db641b30131510b5c47192014e19aeeeb6f73ede1d5356ad2c29915c","ui-tests/missing-catch.stderr":"c51f9c535cfadc603f23fad5e96bb22d7733f0d063c0b365ae5f4a97e84c8ef1","ui-tests/non-public-function.rs":"0fe075b32c211870bcde0f7dce0eceaffb61a4f8a6ffbd90946a59d7d220343c","ui-tests/non-public-function.stderr":"c9f6f5123b6c3462b8952d6e468ed13c566635d4939b98c9098d2a713f5aa2df","ui-tests/pub-not-copy.rs":"1e50f0b63a6e6363b0926cf947b0492a9803ddb35370f32e733a32506df9b556","ui-tests/pub-not-copy.stderr":"1090980d08622552b82c13da82b4c26ce309314b6062f0c5443a65eff5255d00","ui-tests/start-function.rs":"479cb4389545ccf7c155677fe629c135e3374a3f622aab3c17a4db63abca1a55","ui-tests/start-function.stderr":"36b0ca2c38742bb6b999d8d1c302229c5b6176afedd73c3fc4a9da57c480613a","ui-tests/structural-and-final.rs":"1571b078a9d0be6c96ab97be10f1bf369dbb740f04fa312834f49a64130f8d30","ui-tests/structural-and-final.stderr":"cf21dec2851d3f667b93a317ba9e4657a623c49e8b779ea64669452297ba0a17","ui-tests/traits-not-implemented.rs":"3445e15b9c61f84a1f8d703a3a4fe2d2e2d85960ff6b2ac718644d97bf1564e1","ui-tests/traits-not-implemented.stderr":"cb291d21f427a1beee469cc32ea8704d58415272ac52f5b90c76c4f2bb823679","ui-tests/unknown-type-in-import.rs":"7fbc95bb82d0d60568b8daf27236418219c57447d1dc2e2e384e5f907bac3e3e","ui-tests/unknown-type-in-import.stderr":"2d213673be2dfcb6b56b9efacea9e968c5ae4faab9fabd6c5c66495008d5fe20","ui-tests/unused-attributes.rs":"7c20441c30e53376c9e72fcf82da0cc6e7462eec3087f9eb74f9682eaf7fb3e6","ui-tests/unused-attributes.stderr":"d4557e356289d0775d29b64797079c623e6d7db1ce319ee59cafb0de6d6a32eb","ui-tests/update-all-references.sh":"8b8dbf31e7ada1314956db7a20ab14b13af3ae246a6295afdc7dc96af8ec3773","ui-tests/update-references.sh":"65375c25981646e08e8589449a06be4505b1a2c9e10d35f650be4b1b495dff22"},"package":"052be0f94026e6cbc75cdefc9bae13fd6052cdcaf532fa6c45e7ae33a1e6c810"}
\ No newline at end of file
diff --git a/vendor/wasm-bindgen-macro/Cargo.toml b/vendor/wasm-bindgen-macro/Cargo.toml
new file mode 100644
index 000000000..99d0e52a5
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/Cargo.toml
@@ -0,0 +1,47 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+name = "wasm-bindgen-macro"
+version = "0.2.83"
+authors = ["The wasm-bindgen Developers"]
+description = """
+Definition of the `#[wasm_bindgen]` attribute, an internal dependency
+"""
+homepage = "https://rustwasm.github.io/wasm-bindgen/"
+documentation = "https://docs.rs/wasm-bindgen"
+readme = "README.md"
+license = "MIT/Apache-2.0"
+repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/macro"
+
+[lib]
+proc-macro = true
+
+[dependencies.quote]
+version = "1.0"
+
+[dependencies.wasm-bindgen-macro-support]
+version = "=0.2.83"
+
+[dev-dependencies.trybuild]
+version = "1.0"
+
+[dev-dependencies.wasm-bindgen]
+version = "0.2.83"
+
+[dev-dependencies.wasm-bindgen-futures]
+version = "0.4.33"
+
+[features]
+spans = ["wasm-bindgen-macro-support/spans"]
+strict-macro = ["wasm-bindgen-macro-support/strict-macro"]
+xxx_debug_only_print_generated_code = []
diff --git a/vendor/wasm-bindgen-macro/LICENSE-APACHE b/vendor/wasm-bindgen-macro/LICENSE-APACHE
new file mode 100644
index 000000000..16fe87b06
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
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+
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+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
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+
+Unless required by applicable law or agreed to in writing, software
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+limitations under the License.
diff --git a/vendor/wasm-bindgen-macro/LICENSE-MIT b/vendor/wasm-bindgen-macro/LICENSE-MIT
new file mode 100644
index 000000000..39e0ed660
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/LICENSE-MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2014 Alex Crichton
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/vendor/wasm-bindgen-macro/README.md b/vendor/wasm-bindgen-macro/README.md
new file mode 100644
index 000000000..353829869
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/README.md
@@ -0,0 +1,28 @@
+# `wasm-bindgen-macro`
+
+Implementation of the `#[wasm_bindgen]` attribute. See the `wasm-bindgen`
+documentation for more information about what this macro does.
+
+## Testing
+
+Testing of this macro is done through "ui tests" in the `ui-tests` subdirectory
+of this crate. Each Rust file in this folder is compiled with the `wasm_bindgen`
+crate, and the `*.stderr` file sitting next to it is the asserted output of the
+compiler. If the output matches, the test passes, and if the output doesn't
+match the test fails. Note that it is also considered a failure if a test
+actually compiles successfully.
+
+To add a test:
+
+* Create `ui-tests/my-awesome-test.rs`
+* Write an invalid `#[wasm_bindgen]` invocation, testing the error you're
+  generating
+* Execute `cargo test -p ui-tests`, the test will fail
+* From within the `ui-tests` folder, execute `./update-all-references.sh`. This
+  should create a `my-awesome-test.stderr` file.
+* Inspect `my-awesome-test.stderr` to make sure it looks ok
+* Rerun `cargo test -p ui-tests` and your tests should pass!
+
+Testing here is a work in progress, see
+[#601](https://github.com/rustwasm/wasm-bindgen/issues/601) for more
+information.
diff --git a/vendor/wasm-bindgen-macro/src/lib.rs b/vendor/wasm-bindgen-macro/src/lib.rs
new file mode 100644
index 000000000..c677aaf24
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/src/lib.rs
@@ -0,0 +1,32 @@
+#![doc(html_root_url = "https://docs.rs/wasm-bindgen-macro/0.2")]
+
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+use quote::quote;
+
+#[proc_macro_attribute]
+pub fn wasm_bindgen(attr: TokenStream, input: TokenStream) -> TokenStream {
+    match wasm_bindgen_macro_support::expand(attr.into(), input.into()) {
+        Ok(tokens) => {
+            if cfg!(feature = "xxx_debug_only_print_generated_code") {
+                println!("{}", tokens);
+            }
+            tokens.into()
+        }
+        Err(diagnostic) => (quote! { #diagnostic }).into(),
+    }
+}
+
+#[proc_macro_attribute]
+pub fn __wasm_bindgen_class_marker(attr: TokenStream, input: TokenStream) -> TokenStream {
+    match wasm_bindgen_macro_support::expand_class_marker(attr.into(), input.into()) {
+        Ok(tokens) => {
+            if cfg!(feature = "xxx_debug_only_print_generated_code") {
+                println!("{}", tokens);
+            }
+            tokens.into()
+        }
+        Err(diagnostic) => (quote! { #diagnostic }).into(),
+    }
+}
diff --git a/vendor/wasm-bindgen-macro/tests/ui.rs b/vendor/wasm-bindgen-macro/tests/ui.rs
new file mode 100644
index 000000000..da15c9214
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/tests/ui.rs
@@ -0,0 +1,5 @@
+#[test]
+fn ui() {
+    let t = trybuild::TestCases::new();
+    t.compile_fail("ui-tests/*.rs");
+}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/async-errors.rs b/vendor/wasm-bindgen-macro/ui-tests/async-errors.rs
new file mode 100644
index 000000000..22c5107e4
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/async-errors.rs
@@ -0,0 +1,40 @@
+#![allow(unreachable_code)]
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub struct MyType;
+
+#[wasm_bindgen]
+pub async fn good1() { loop {} }
+#[wasm_bindgen]
+pub async fn good2() -> JsValue { loop {} }
+#[wasm_bindgen]
+pub async fn good3() -> u32 { loop {} }
+#[wasm_bindgen]
+pub async fn good4() -> MyType { loop {} }
+#[wasm_bindgen]
+pub async fn good5() -> Result<(), JsValue> { loop {} }
+#[wasm_bindgen]
+pub async fn good6() -> Result<JsValue, JsValue> { loop {} }
+#[wasm_bindgen]
+pub async fn good7() -> Result<u32, JsValue> { loop {} }
+#[wasm_bindgen]
+pub async fn good8() -> Result<MyType, JsValue> { loop {} }
+#[wasm_bindgen]
+pub async fn good9() -> Result<MyType, u32> { loop {} }
+#[wasm_bindgen]
+pub async fn good10() -> Result<MyType, MyType> { loop {} }
+
+pub struct BadType;
+
+#[wasm_bindgen]
+pub async fn bad1() -> Result<(), ()> { loop {} }
+#[wasm_bindgen]
+pub async fn bad2() -> Result<(), BadType> { loop {} }
+#[wasm_bindgen]
+pub async fn bad3() -> BadType { loop {} }
+#[wasm_bindgen]
+pub async fn bad4() -> Result<BadType, JsValue> { loop {} }
+
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/async-errors.stderr b/vendor/wasm-bindgen-macro/ui-tests/async-errors.stderr
new file mode 100644
index 000000000..492492a18
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/async-errors.stderr
@@ -0,0 +1,68 @@
+error[E0277]: the trait bound `Result<(), ()>: IntoJsResult` is not satisfied
+    --> ui-tests/async-errors.rs:30:1
+     |
+30   | #[wasm_bindgen]
+     | ^^^^^^^^^^^^^^^ the trait `IntoJsResult` is not implemented for `Result<(), ()>`
+     |
+     = help: the following implementations were found:
+               <Result<(), E> as IntoJsResult>
+               <Result<T, E> as IntoJsResult>
+note: required by `into_js_result`
+    --> $WORKSPACE/src/lib.rs
+     |
+     |         fn into_js_result(self) -> Result<JsValue, JsValue>;
+     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `Result<(), BadType>: IntoJsResult` is not satisfied
+    --> ui-tests/async-errors.rs:32:1
+     |
+32   | #[wasm_bindgen]
+     | ^^^^^^^^^^^^^^^ the trait `IntoJsResult` is not implemented for `Result<(), BadType>`
+     |
+     = help: the following implementations were found:
+               <Result<(), E> as IntoJsResult>
+               <Result<T, E> as IntoJsResult>
+note: required by `into_js_result`
+    --> $WORKSPACE/src/lib.rs
+     |
+     |         fn into_js_result(self) -> Result<JsValue, JsValue>;
+     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `wasm_bindgen::JsValue: From<BadType>` is not satisfied
+    --> ui-tests/async-errors.rs:34:1
+     |
+34   | #[wasm_bindgen]
+     | ^^^^^^^^^^^^^^^ the trait `From<BadType>` is not implemented for `wasm_bindgen::JsValue`
+     |
+     = help: the following implementations were found:
+               <wasm_bindgen::JsValue as From<&'a String>>
+               <wasm_bindgen::JsValue as From<&'a T>>
+               <wasm_bindgen::JsValue as From<&'a str>>
+               <wasm_bindgen::JsValue as From<JsError>>
+             and 73 others
+     = note: required because of the requirements on the impl of `Into<wasm_bindgen::JsValue>` for `BadType`
+     = note: required because of the requirements on the impl of `IntoJsResult` for `BadType`
+note: required by `into_js_result`
+    --> $WORKSPACE/src/lib.rs
+     |
+     |         fn into_js_result(self) -> Result<JsValue, JsValue>;
+     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `Result<BadType, wasm_bindgen::JsValue>: IntoJsResult` is not satisfied
+    --> ui-tests/async-errors.rs:36:1
+     |
+36   | #[wasm_bindgen]
+     | ^^^^^^^^^^^^^^^ the trait `IntoJsResult` is not implemented for `Result<BadType, wasm_bindgen::JsValue>`
+     |
+     = help: the following implementations were found:
+               <Result<(), E> as IntoJsResult>
+               <Result<T, E> as IntoJsResult>
+note: required by `into_js_result`
+    --> $WORKSPACE/src/lib.rs
+     |
+     |         fn into_js_result(self) -> Result<JsValue, JsValue>;
+     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/vendor/wasm-bindgen-macro/ui-tests/attribute-fails-to-parse.rs b/vendor/wasm-bindgen-macro/ui-tests/attribute-fails-to-parse.rs
new file mode 100644
index 000000000..2d5b34bce
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/attribute-fails-to-parse.rs
@@ -0,0 +1,6 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(nonsense)]
+pub fn foo() {}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/attribute-fails-to-parse.stderr b/vendor/wasm-bindgen-macro/ui-tests/attribute-fails-to-parse.stderr
new file mode 100644
index 000000000..dfe9ecf0e
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/attribute-fails-to-parse.stderr
@@ -0,0 +1,5 @@
+error: unknown attribute
+ --> $DIR/attribute-fails-to-parse.rs:3:16
+  |
+3 | #[wasm_bindgen(nonsense)]
+  |                ^^^^^^^^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/bad-signatures.rs b/vendor/wasm-bindgen-macro/ui-tests/bad-signatures.rs
new file mode 100644
index 000000000..de2c0e156
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/bad-signatures.rs
@@ -0,0 +1,13 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub fn foo() -> &u32 {}
+
+#[wasm_bindgen]
+extern "C" {
+    fn foo(Foo(x): Foo);
+
+    fn foo() -> &u32;
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/bad-signatures.stderr b/vendor/wasm-bindgen-macro/ui-tests/bad-signatures.stderr
new file mode 100644
index 000000000..48d8d40dd
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/bad-signatures.stderr
@@ -0,0 +1,17 @@
+error: cannot return a borrowed ref with #[wasm_bindgen]
+ --> $DIR/bad-signatures.rs:4:17
+  |
+4 | pub fn foo() -> &u32 {}
+  |                 ^^^^
+
+error: unsupported pattern in #[wasm_bindgen] imported function
+ --> $DIR/bad-signatures.rs:8:12
+  |
+8 |     fn foo(Foo(x): Foo);
+  |            ^^^^^^
+
+error: cannot return references in #[wasm_bindgen] imports yet
+  --> $DIR/bad-signatures.rs:10:17
+   |
+10 |     fn foo() -> &u32;
+   |                 ^^^^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/import-local.rs b/vendor/wasm-bindgen-macro/ui-tests/import-local.rs
new file mode 100644
index 000000000..ff86375bb
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/import-local.rs
@@ -0,0 +1,13 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(module = "./foo.js")]
+extern {
+    fn wut();
+}
+
+#[wasm_bindgen(module = "../foo.js")]
+extern {
+    fn wut2();
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/import-local.stderr b/vendor/wasm-bindgen-macro/ui-tests/import-local.stderr
new file mode 100644
index 000000000..707b30fcc
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/import-local.stderr
@@ -0,0 +1,11 @@
+error: relative module paths aren't supported yet
+ --> $DIR/import-local.rs:3:25
+  |
+3 | #[wasm_bindgen(module = "./foo.js")]
+  |                         ^^^^^^^^^^
+
+error: relative module paths aren't supported yet
+ --> $DIR/import-local.rs:8:25
+  |
+8 | #[wasm_bindgen(module = "../foo.js")]
+  |                         ^^^^^^^^^^^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-attr.rs b/vendor/wasm-bindgen-macro/ui-tests/invalid-attr.rs
new file mode 100644
index 000000000..188a1c833
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-attr.rs
@@ -0,0 +1,15 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(x)]
+pub fn foo() {}
+
+#[wasm_bindgen]
+extern "C" {
+    #[wasm_bindgen(y)]
+    fn bar();
+
+    #[wasm_bindgen {  }]
+    fn bar();
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-attr.stderr b/vendor/wasm-bindgen-macro/ui-tests/invalid-attr.stderr
new file mode 100644
index 000000000..47264acd3
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-attr.stderr
@@ -0,0 +1,17 @@
+error: unknown attribute
+ --> $DIR/invalid-attr.rs:3:16
+  |
+3 | #[wasm_bindgen(x)]
+  |                ^
+
+error: unknown attribute
+ --> $DIR/invalid-attr.rs:8:20
+  |
+8 |     #[wasm_bindgen(y)]
+  |                    ^
+
+error: malformed #[wasm_bindgen] attribute
+  --> $DIR/invalid-attr.rs:11:5
+   |
+11 |     #[wasm_bindgen {  }]
+   |     ^^^^^^^^^^^^^^^^^^^^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-enums.rs b/vendor/wasm-bindgen-macro/ui-tests/invalid-enums.rs
new file mode 100644
index 000000000..abea3fa67
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-enums.rs
@@ -0,0 +1,21 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+enum A {}
+
+#[wasm_bindgen]
+pub enum B {
+    D(u32),
+}
+
+#[wasm_bindgen]
+pub enum C {
+    X = 1 + 3,
+}
+
+#[wasm_bindgen]
+pub enum D {
+    X = 4294967296,
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-enums.stderr b/vendor/wasm-bindgen-macro/ui-tests/invalid-enums.stderr
new file mode 100644
index 000000000..7ad51f9a5
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-enums.stderr
@@ -0,0 +1,23 @@
+error: cannot export empty enums to JS
+ --> $DIR/invalid-enums.rs:4:1
+  |
+4 | enum A {}
+  | ^^^^^^^^^
+
+error: only C-Style enums allowed with #[wasm_bindgen]
+ --> $DIR/invalid-enums.rs:8:6
+  |
+8 |     D(u32),
+  |      ^^^^^
+
+error: enums with #[wasm_bindgen] may only have number literal values
+  --> $DIR/invalid-enums.rs:13:9
+   |
+13 |     X = 1 + 3,
+   |         ^^^^^
+
+error: enums with #[wasm_bindgen] can only support numbers that can be represented as u32
+  --> $DIR/invalid-enums.rs:18:9
+   |
+18 |     X = 4294967296,
+   |         ^^^^^^^^^^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-imports.rs b/vendor/wasm-bindgen-macro/ui-tests/invalid-imports.rs
new file mode 100644
index 000000000..ecd223b70
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-imports.rs
@@ -0,0 +1,41 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    type A;
+
+    fn f() -> &'static u32;
+
+    #[wasm_bindgen(method)]
+    fn f1();
+    #[wasm_bindgen(method)]
+    fn f2(x: u32);
+    #[wasm_bindgen(method)]
+    fn f3(x: &&u32);
+    #[wasm_bindgen(method)]
+    fn f4(x: &foo::Bar);
+    #[wasm_bindgen(method)]
+    fn f4(x: &::Bar);
+    #[wasm_bindgen(method)]
+    fn f4(x: &Bar<T>);
+    #[wasm_bindgen(method)]
+    fn f4(x: &Fn(T));
+
+    #[wasm_bindgen(constructor)]
+    fn f();
+    #[wasm_bindgen(constructor)]
+    fn f() -> ::Bar;
+    #[wasm_bindgen(constructor)]
+    fn f() -> &Bar;
+
+    #[wasm_bindgen(catch)]
+    fn f() -> u32;
+    #[wasm_bindgen(catch)]
+    fn f() -> &u32;
+    #[wasm_bindgen(catch)]
+    fn f() -> Result<>;
+    #[wasm_bindgen(catch)]
+    fn f() -> Result<'a>;
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-imports.stderr b/vendor/wasm-bindgen-macro/ui-tests/invalid-imports.stderr
new file mode 100644
index 000000000..aeb09c574
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-imports.stderr
@@ -0,0 +1,71 @@
+error: it is currently not sound to use lifetimes in function signatures
+ --> $DIR/invalid-imports.rs:7:16
+  |
+7 |     fn f() -> &'static u32;
+  |                ^^^^^^^
+
+error: imported methods must have at least one argument
+  --> $DIR/invalid-imports.rs:10:5
+   |
+10 |     fn f1();
+   |     ^^^^^^^^
+
+error: first argument of method must be a shared reference
+  --> $DIR/invalid-imports.rs:12:14
+   |
+12 |     fn f2(x: u32);
+   |              ^^^
+
+error: first argument of method must be a path
+  --> $DIR/invalid-imports.rs:14:14
+   |
+14 |     fn f3(x: &&u32);
+   |              ^^^^^
+
+error: paths with type parameters are not supported yet
+  --> $DIR/invalid-imports.rs:20:15
+   |
+20 |     fn f4(x: &Bar<T>);
+   |               ^^^^^^
+
+error: paths with type parameters are not supported yet
+  --> $DIR/invalid-imports.rs:22:15
+   |
+22 |     fn f4(x: &Fn(T));
+   |               ^^^^^
+
+error: constructor returns must be bare types
+  --> $DIR/invalid-imports.rs:25:5
+   |
+25 |     fn f();
+   |     ^^^^^^^
+
+error: return value of constructor must be a bare path
+  --> $DIR/invalid-imports.rs:29:5
+   |
+29 |     fn f() -> &Bar;
+   |     ^^^^^^^^^^^^^^^
+
+error: must be Result<...>
+  --> $DIR/invalid-imports.rs:32:15
+   |
+32 |     fn f() -> u32;
+   |               ^^^
+
+error: must be Result<...>
+  --> $DIR/invalid-imports.rs:34:15
+   |
+34 |     fn f() -> &u32;
+   |               ^^^^
+
+error: must have at least one generic parameter
+  --> $DIR/invalid-imports.rs:36:15
+   |
+36 |     fn f() -> Result<>;
+   |               ^^^^^^^^
+
+error: it is currently not sound to use lifetimes in function signatures
+  --> $DIR/invalid-imports.rs:38:22
+   |
+38 |     fn f() -> Result<'a>;
+   |                      ^^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-items.rs b/vendor/wasm-bindgen-macro/ui-tests/invalid-items.rs
new file mode 100644
index 000000000..f1a356331
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-items.rs
@@ -0,0 +1,33 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+fn foo() {}
+
+#[wasm_bindgen]
+pub const fn foo2() {}
+
+#[wasm_bindgen]
+struct Foo<T>(T);
+
+#[wasm_bindgen]
+extern "C" {
+    static mut FOO: u32;
+
+    pub fn foo3(x: i32, ...);
+}
+
+#[wasm_bindgen]
+extern "system" {
+}
+
+#[wasm_bindgen]
+pub fn foo4<T>() {}
+#[wasm_bindgen]
+pub fn foo5<'a>() {}
+#[wasm_bindgen]
+pub fn foo6<'a, T>() {}
+
+#[wasm_bindgen]
+trait X {}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-items.stderr b/vendor/wasm-bindgen-macro/ui-tests/invalid-items.stderr
new file mode 100644
index 000000000..1800ade29
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-items.stderr
@@ -0,0 +1,59 @@
+error: can only #[wasm_bindgen] public functions
+ --> $DIR/invalid-items.rs:4:1
+  |
+4 | fn foo() {}
+  | ^^^^^^^^^^^
+
+error: can only #[wasm_bindgen] non-const functions
+ --> $DIR/invalid-items.rs:7:5
+  |
+7 | pub const fn foo2() {}
+  |     ^^^^^
+
+error: structs with #[wasm_bindgen] cannot have lifetime or type parameters currently
+  --> $DIR/invalid-items.rs:10:11
+   |
+10 | struct Foo<T>(T);
+   |           ^^^
+
+error: cannot import mutable globals yet
+  --> $DIR/invalid-items.rs:14:12
+   |
+14 |     static mut FOO: u32;
+   |            ^^^
+
+error: can't #[wasm_bindgen] variadic functions
+  --> $DIR/invalid-items.rs:16:25
+   |
+16 |     pub fn foo3(x: i32, ...);
+   |                         ^^^
+
+error: only foreign mods with the `C` ABI are allowed
+  --> $DIR/invalid-items.rs:20:8
+   |
+20 | extern "system" {
+   |        ^^^^^^^^
+
+error: can't #[wasm_bindgen] functions with lifetime or type parameters
+  --> $DIR/invalid-items.rs:24:12
+   |
+24 | pub fn foo4<T>() {}
+   |            ^^^
+
+error: can't #[wasm_bindgen] functions with lifetime or type parameters
+  --> $DIR/invalid-items.rs:26:12
+   |
+26 | pub fn foo5<'a>() {}
+   |            ^^^^
+
+error: can't #[wasm_bindgen] functions with lifetime or type parameters
+  --> $DIR/invalid-items.rs:28:12
+   |
+28 | pub fn foo6<'a, T>() {}
+   |            ^^^^^^^
+
+error: #[wasm_bindgen] can only be applied to a function, struct, enum, impl, or extern block
+  --> $DIR/invalid-items.rs:31:1
+   |
+31 | trait X {}
+   | ^^^^^^^^^^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-methods.rs b/vendor/wasm-bindgen-macro/ui-tests/invalid-methods.rs
new file mode 100644
index 000000000..bd69e6d31
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-methods.rs
@@ -0,0 +1,42 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub struct A;
+
+#[wasm_bindgen]
+default impl A {
+}
+
+#[wasm_bindgen]
+unsafe impl A {
+}
+
+#[wasm_bindgen]
+impl Clone for A {
+}
+
+#[wasm_bindgen]
+impl<T> A {
+}
+
+#[wasm_bindgen]
+impl &'static A {
+}
+
+macro_rules! x { () => () }
+
+#[wasm_bindgen]
+impl A {
+    const X: u32 = 3;
+    type Y = u32;
+    x!();
+
+    // pub default fn foo() {} // TODO: compiler's pretty printer totally broken
+}
+
+#[wasm_bindgen]
+impl A {
+    pub const fn foo() {}
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-methods.stderr b/vendor/wasm-bindgen-macro/ui-tests/invalid-methods.stderr
new file mode 100644
index 000000000..a785fc1ff
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-methods.stderr
@@ -0,0 +1,61 @@
+error: #[wasm_bindgen] default impls are not supported
+ --> $DIR/invalid-methods.rs:7:1
+  |
+7 | default impl A {
+  | ^^^^^^^
+
+error: #[wasm_bindgen] unsafe impls are not supported
+  --> $DIR/invalid-methods.rs:11:1
+   |
+11 | unsafe impl A {
+   | ^^^^^^
+
+error: #[wasm_bindgen] trait impls are not supported
+  --> $DIR/invalid-methods.rs:15:6
+   |
+15 | impl Clone for A {
+   |      ^^^^^
+
+error: #[wasm_bindgen] generic impls aren't supported
+  --> $DIR/invalid-methods.rs:19:5
+   |
+19 | impl<T> A {
+   |     ^^^
+
+error: unsupported self type in #[wasm_bindgen] impl
+  --> $DIR/invalid-methods.rs:23:6
+   |
+23 | impl &'static A {
+   |      ^^^^^^^^^^
+
+error: const definitions aren't supported with #[wasm_bindgen]
+  --> $DIR/invalid-methods.rs:30:5
+   |
+30 |     const X: u32 = 3;
+   |     ^^^^^^^^^^^^^^^^^
+
+error: type definitions in impls aren't supported with #[wasm_bindgen]
+  --> $DIR/invalid-methods.rs:31:5
+   |
+31 |     type Y = u32;
+   |     ^^^^^^^^^^^^^
+
+error: macros in impls aren't supported
+  --> $DIR/invalid-methods.rs:32:5
+   |
+32 |     x!();
+   |     ^^^^^
+
+error: can only #[wasm_bindgen] non-const functions
+  --> $DIR/invalid-methods.rs:39:9
+   |
+39 |     pub const fn foo() {}
+   |         ^^^^^
+
+warning: unused macro definition
+  --> $DIR/invalid-methods.rs:26:1
+   |
+26 | macro_rules! x { () => () }
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `#[warn(unused_macros)]` on by default
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-setter.rs b/vendor/wasm-bindgen-macro/ui-tests/invalid-setter.rs
new file mode 100644
index 000000000..42d83879e
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-setter.rs
@@ -0,0 +1,18 @@
+
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    type A;
+
+    #[wasm_bindgen(setter, method)]
+    fn a(this: &A, b: i32);
+
+    #[wasm_bindgen(setter = x, method)]
+    fn b(this: &A, b: i32);
+
+    #[wasm_bindgen(setter, method, js_name = x)]
+    fn c(this: &A, b: i32);
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/invalid-setter.stderr b/vendor/wasm-bindgen-macro/ui-tests/invalid-setter.stderr
new file mode 100644
index 000000000..77e1509e9
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/invalid-setter.stderr
@@ -0,0 +1,5 @@
+error: setters must start with `set_`, found: a
+ --> $DIR/invalid-setter.rs:9:8
+  |
+9 |     fn a(this: &A, b: i32);
+  |        ^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/missing-catch.rs b/vendor/wasm-bindgen-macro/ui-tests/missing-catch.rs
new file mode 100644
index 000000000..962e2fad1
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/missing-catch.rs
@@ -0,0 +1,9 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+	#[wasm_bindgen]
+	pub fn foo() -> Result<JsValue, JsValue>;
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/missing-catch.stderr b/vendor/wasm-bindgen-macro/ui-tests/missing-catch.stderr
new file mode 100644
index 000000000..4c20dbe76
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/missing-catch.stderr
@@ -0,0 +1,17 @@
+error[E0277]: the trait bound `Result<wasm_bindgen::JsValue, wasm_bindgen::JsValue>: FromWasmAbi` is not satisfied
+  --> $DIR/missing-catch.rs:6:9
+   |
+6  |     pub fn foo() -> Result<JsValue, JsValue>;
+   |            ^^^ the trait `FromWasmAbi` is not implemented for `Result<wasm_bindgen::JsValue, wasm_bindgen::JsValue>`
+   |
+note: required by a bound in `FromWasmAbi`
+  --> $DIR/traits.rs:23:1
+   |
+23 | / pub trait FromWasmAbi: WasmDescribe {
+24 | |     /// The wasm ABI type that this converts from when coming back out from the
+25 | |     /// ABI boundary.
+26 | |     type Abi: WasmAbi;
+...  |
+35 | |     unsafe fn from_abi(js: Self::Abi) -> Self;
+36 | | }
+   | |_^ required by this bound in `FromWasmAbi`
diff --git a/vendor/wasm-bindgen-macro/ui-tests/non-public-function.rs b/vendor/wasm-bindgen-macro/ui-tests/non-public-function.rs
new file mode 100644
index 000000000..5f2e55874
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/non-public-function.rs
@@ -0,0 +1,6 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+fn foo() {}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/non-public-function.stderr b/vendor/wasm-bindgen-macro/ui-tests/non-public-function.stderr
new file mode 100644
index 000000000..02f2a329f
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/non-public-function.stderr
@@ -0,0 +1,5 @@
+error: can only #[wasm_bindgen] public functions
+ --> $DIR/non-public-function.rs:4:1
+  |
+4 | fn foo() {}
+  | ^^^^^^^^^^^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/pub-not-copy.rs b/vendor/wasm-bindgen-macro/ui-tests/pub-not-copy.rs
new file mode 100644
index 000000000..b5f6b0cfb
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/pub-not-copy.rs
@@ -0,0 +1,8 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub struct A {
+    pub field: String,
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/pub-not-copy.stderr b/vendor/wasm-bindgen-macro/ui-tests/pub-not-copy.stderr
new file mode 100644
index 000000000..0cb088cd1
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/pub-not-copy.stderr
@@ -0,0 +1,12 @@
+error[E0277]: the trait bound `String: std::marker::Copy` is not satisfied
+ --> $DIR/pub-not-copy.rs:5:16
+  |
+5 |     pub field: String,
+  |                ^^^^^^ the trait `std::marker::Copy` is not implemented for `String`
+  |
+note: required by a bound in `assert_copy`
+ --> $DIR/pub-not-copy.rs:3:1
+  |
+3 | #[wasm_bindgen]
+  | ^^^^^^^^^^^^^^^ required by this bound in `assert_copy`
+  = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/vendor/wasm-bindgen-macro/ui-tests/start-function.rs b/vendor/wasm-bindgen-macro/ui-tests/start-function.rs
new file mode 100644
index 000000000..65ad90bf2
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/start-function.rs
@@ -0,0 +1,33 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(start)]
+pub fn foo() {}
+
+#[wasm_bindgen(start)]
+pub fn foo2(x: u32) {}
+
+#[wasm_bindgen(start)]
+pub fn foo3<T>() {}
+
+#[wasm_bindgen(start)]
+pub fn foo4() -> Result<(), JsValue> { Ok(()) }
+
+#[wasm_bindgen(start)]
+pub fn foo5() -> Result<JsValue, ()> { Err(()) }
+
+#[wasm_bindgen(start)]
+pub fn foo6() -> Result<JsValue, JsValue> { Ok(JsValue::from(1u32)) }
+
+#[wasm_bindgen(start)]
+pub async fn foo_async1() {}
+
+#[wasm_bindgen(start)]
+pub async fn foo_async2() -> Result<(), JsValue> { Ok(()) }
+
+#[wasm_bindgen(start)]
+pub async fn foo_async3() -> Result<JsValue, ()> { Err(()) }
+
+#[wasm_bindgen(start)]
+pub async fn foo_async4() -> Result<JsValue, JsValue> { Ok(JsValue::from(1u32)) }
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/start-function.stderr b/vendor/wasm-bindgen-macro/ui-tests/start-function.stderr
new file mode 100644
index 000000000..8f459863d
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/start-function.stderr
@@ -0,0 +1,71 @@
+error: the start function cannot have arguments
+ --> ui-tests/start-function.rs:7:13
+  |
+7 | pub fn foo2(x: u32) {}
+  |             ^^^^^^
+
+error: the start function cannot have generics
+  --> ui-tests/start-function.rs:10:12
+   |
+10 | pub fn foo3<T>() {}
+   |            ^^^
+
+error[E0277]: the trait bound `Result<wasm_bindgen::JsValue, ()>: wasm_bindgen::__rt::Start` is not satisfied
+    --> ui-tests/start-function.rs:15:1
+     |
+15   | #[wasm_bindgen(start)]
+     | ^^^^^^^^^^^^^^^^^^^^^^ the trait `wasm_bindgen::__rt::Start` is not implemented for `Result<wasm_bindgen::JsValue, ()>`
+     |
+     = help: the following implementations were found:
+               <Result<(), E> as wasm_bindgen::__rt::Start>
+note: required by `start`
+    --> $WORKSPACE/src/lib.rs
+     |
+     |         fn start(self);
+     |         ^^^^^^^^^^^^^^^
+     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `Result<wasm_bindgen::JsValue, wasm_bindgen::JsValue>: wasm_bindgen::__rt::Start` is not satisfied
+    --> ui-tests/start-function.rs:18:1
+     |
+18   | #[wasm_bindgen(start)]
+     | ^^^^^^^^^^^^^^^^^^^^^^ the trait `wasm_bindgen::__rt::Start` is not implemented for `Result<wasm_bindgen::JsValue, wasm_bindgen::JsValue>`
+     |
+     = help: the following implementations were found:
+               <Result<(), E> as wasm_bindgen::__rt::Start>
+note: required by `start`
+    --> $WORKSPACE/src/lib.rs
+     |
+     |         fn start(self);
+     |         ^^^^^^^^^^^^^^^
+     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `Result<wasm_bindgen::JsValue, ()>: wasm_bindgen::__rt::Start` is not satisfied
+    --> ui-tests/start-function.rs:27:1
+     |
+27   | #[wasm_bindgen(start)]
+     | ^^^^^^^^^^^^^^^^^^^^^^ the trait `wasm_bindgen::__rt::Start` is not implemented for `Result<wasm_bindgen::JsValue, ()>`
+     |
+     = help: the following implementations were found:
+               <Result<(), E> as wasm_bindgen::__rt::Start>
+note: required by `start`
+    --> $WORKSPACE/src/lib.rs
+     |
+     |         fn start(self);
+     |         ^^^^^^^^^^^^^^^
+     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0277]: the trait bound `Result<wasm_bindgen::JsValue, wasm_bindgen::JsValue>: wasm_bindgen::__rt::Start` is not satisfied
+    --> ui-tests/start-function.rs:30:1
+     |
+30   | #[wasm_bindgen(start)]
+     | ^^^^^^^^^^^^^^^^^^^^^^ the trait `wasm_bindgen::__rt::Start` is not implemented for `Result<wasm_bindgen::JsValue, wasm_bindgen::JsValue>`
+     |
+     = help: the following implementations were found:
+               <Result<(), E> as wasm_bindgen::__rt::Start>
+note: required by `start`
+    --> $WORKSPACE/src/lib.rs
+     |
+     |         fn start(self);
+     |         ^^^^^^^^^^^^^^^
+     = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/vendor/wasm-bindgen-macro/ui-tests/structural-and-final.rs b/vendor/wasm-bindgen-macro/ui-tests/structural-and-final.rs
new file mode 100644
index 000000000..5c5a4ecce
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/structural-and-final.rs
@@ -0,0 +1,11 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    type Foo;
+
+    #[wasm_bindgen(method, structural, final)]
+    fn bar(this: &Foo);
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/structural-and-final.stderr b/vendor/wasm-bindgen-macro/ui-tests/structural-and-final.stderr
new file mode 100644
index 000000000..8c8a70387
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/structural-and-final.stderr
@@ -0,0 +1,5 @@
+error: cannot specify both `structural` and `final`
+ --> $DIR/structural-and-final.rs:7:40
+  |
+7 |     #[wasm_bindgen(method, structural, final)]
+  |                                        ^^^^^
diff --git a/vendor/wasm-bindgen-macro/ui-tests/traits-not-implemented.rs b/vendor/wasm-bindgen-macro/ui-tests/traits-not-implemented.rs
new file mode 100644
index 000000000..56c5900c0
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/traits-not-implemented.rs
@@ -0,0 +1,11 @@
+use wasm_bindgen::prelude::*;
+
+struct A;
+
+#[wasm_bindgen]
+extern "C" {
+    #[wasm_bindgen]
+    pub fn foo(a: A);
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/traits-not-implemented.stderr b/vendor/wasm-bindgen-macro/ui-tests/traits-not-implemented.stderr
new file mode 100644
index 000000000..7b0f90f57
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/traits-not-implemented.stderr
@@ -0,0 +1,18 @@
+error[E0277]: the trait bound `A: IntoWasmAbi` is not satisfied
+  --> $DIR/traits-not-implemented.rs:5:1
+   |
+5  | #[wasm_bindgen]
+   | ^^^^^^^^^^^^^^^ the trait `IntoWasmAbi` is not implemented for `A`
+   |
+note: required by a bound in `IntoWasmAbi`
+  --> $DIR/traits.rs:9:1
+   |
+9  | / pub trait IntoWasmAbi: WasmDescribe {
+10 | |     /// The wasm ABI type that this converts into when crossing the ABI
+11 | |     /// boundary.
+12 | |     type Abi: WasmAbi;
+...  |
+16 | |     fn into_abi(self) -> Self::Abi;
+17 | | }
+   | |_^ required by this bound in `IntoWasmAbi`
+   = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)
diff --git a/vendor/wasm-bindgen-macro/ui-tests/unknown-type-in-import.rs b/vendor/wasm-bindgen-macro/ui-tests/unknown-type-in-import.rs
new file mode 100644
index 000000000..1356a253e
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/unknown-type-in-import.rs
@@ -0,0 +1,10 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    #[wasm_bindgen]
+    pub fn foo(a: A);
+}
+
+fn main() {}
+
diff --git a/vendor/wasm-bindgen-macro/ui-tests/unknown-type-in-import.stderr b/vendor/wasm-bindgen-macro/ui-tests/unknown-type-in-import.stderr
new file mode 100644
index 000000000..e7bb64c53
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/unknown-type-in-import.stderr
@@ -0,0 +1,7 @@
+error[E0412]: cannot find type `A` in this scope
+ --> $DIR/unknown-type-in-import.rs:6:19
+  |
+6 |     pub fn foo(a: A);
+  |               -   ^ not found in this scope
+  |               |
+  |               help: you might be missing a type parameter: `<A>`
diff --git a/vendor/wasm-bindgen-macro/ui-tests/unused-attributes.rs b/vendor/wasm-bindgen-macro/ui-tests/unused-attributes.rs
new file mode 100644
index 000000000..f517dcc4b
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/unused-attributes.rs
@@ -0,0 +1,32 @@
+#![deny(unused_variables)]
+
+use wasm_bindgen::prelude::*;
+
+struct A {}
+
+#[wasm_bindgen]
+impl A {
+    #[wasm_bindgen(method)]
+    pub fn foo() {}
+}
+
+#[wasm_bindgen]
+pub struct MyStruct {
+    hello: String,
+}
+
+#[wasm_bindgen(getter, typescript_custom_section)]
+pub const FOO: &'static str = "FOO";
+
+#[wasm_bindgen(readonly)]
+pub fn bar() {}
+
+#[wasm_bindgen(getter_with_clone, final)]
+impl MyStruct {
+    #[wasm_bindgen(getter, typescript_type = "Thing[]")]
+    pub fn hello(&self) -> String {
+        self.hello.clone()
+    }
+}
+
+fn main() {}
diff --git a/vendor/wasm-bindgen-macro/ui-tests/unused-attributes.stderr b/vendor/wasm-bindgen-macro/ui-tests/unused-attributes.stderr
new file mode 100644
index 000000000..c4ba32f08
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/unused-attributes.stderr
@@ -0,0 +1,41 @@
+error: unused variable: `method`
+ --> ui-tests/unused-attributes.rs:9:20
+  |
+9 |     #[wasm_bindgen(method)]
+  |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_method`
+  |
+note: the lint level is defined here
+ --> ui-tests/unused-attributes.rs:1:9
+  |
+1 | #![deny(unused_variables)]
+  |         ^^^^^^^^^^^^^^^^
+
+error: unused variable: `getter`
+  --> ui-tests/unused-attributes.rs:18:16
+   |
+18 | #[wasm_bindgen(getter, typescript_custom_section)]
+   |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_getter`
+
+error: unused variable: `readonly`
+  --> ui-tests/unused-attributes.rs:21:16
+   |
+21 | #[wasm_bindgen(readonly)]
+   |                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_readonly`
+
+error: unused variable: `getter_with_clone`
+  --> ui-tests/unused-attributes.rs:24:16
+   |
+24 | #[wasm_bindgen(getter_with_clone, final)]
+   |                ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_getter_with_clone`
+
+error: unused variable: `final`
+  --> ui-tests/unused-attributes.rs:24:35
+   |
+24 | #[wasm_bindgen(getter_with_clone, final)]
+   |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_final`
+
+error: unused variable: `typescript_type`
+  --> ui-tests/unused-attributes.rs:26:28
+   |
+26 |     #[wasm_bindgen(getter, typescript_type = "Thing[]")]
+   |                            ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_typescript_type`
diff --git a/vendor/wasm-bindgen-macro/ui-tests/update-all-references.sh b/vendor/wasm-bindgen-macro/ui-tests/update-all-references.sh
new file mode 100755
index 000000000..7b757a479
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/update-all-references.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+#
+# Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+# A script to update the references for all tests. The idea is that
+# you do a run, which will generate files in the build directory
+# containing the (normalized) actual output of the compiler. You then
+# run this script, which will copy those files over. If you find
+# yourself manually editing a foo.stderr file, you're doing it wrong.
+#
+# See all `update-references.sh`, if you just want to update a single test.
+
+MY_DIR=$(dirname $0)
+cd $MY_DIR
+find . -name '*.rs' | xargs ./update-references.sh
diff --git a/vendor/wasm-bindgen-macro/ui-tests/update-references.sh b/vendor/wasm-bindgen-macro/ui-tests/update-references.sh
new file mode 100755
index 000000000..19a6d4888
--- /dev/null
+++ b/vendor/wasm-bindgen-macro/ui-tests/update-references.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+#
+# Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+# A script to update the references for particular tests. The idea is
+# that you do a run, which will generate files in the build directory
+# containing the (normalized) actual output of the compiler. This
+# script will then copy that output and replace the "expected output"
+# files. You can then commit the changes.
+#
+# If you find yourself manually editing a foo.stderr file, you're
+# doing it wrong.
+
+MYDIR=$(dirname $0)
+
+BUILD_DIR="../../../target/tests/ui"
+
+while [[ "$1" != "" ]]; do
+    STDERR_NAME="${1/%.rs/.stderr}"
+    STDOUT_NAME="${1/%.rs/.stdout}"
+    shift
+    if [ -f $BUILD_DIR/$STDOUT_NAME ] && \
+           ! (diff $BUILD_DIR/$STDOUT_NAME $MYDIR/$STDOUT_NAME >& /dev/null); then
+        echo updating $MYDIR/$STDOUT_NAME
+        cp $BUILD_DIR/$STDOUT_NAME $MYDIR/$STDOUT_NAME
+    fi
+    if [ -f $BUILD_DIR/$STDERR_NAME ] && \
+           ! (diff $BUILD_DIR/$STDERR_NAME $MYDIR/$STDERR_NAME >& /dev/null); then
+        echo updating $MYDIR/$STDERR_NAME
+        cp $BUILD_DIR/$STDERR_NAME $MYDIR/$STDERR_NAME
+    fi
+done
+
+