Update all crates to edition 2021 (#4045)

Author: daxpedda

Cargo.toml

@@ -11,7 +11,7 @@ documentation = "https://docs.rs/wasm-bindgen"
 description = """
 Easy support for interacting between JS and Rust.
 """
-edition = "2018"
+edition = "2021"
 rust-version = "1.57"
 
 [package.metadata.docs.rs]

benchmarks/Cargo.toml

@@ -2,7 +2,7 @@
 name = "wasm-bindgen-benchmark"
 version = "0.1.0"
 authors = ["The wasm-bindgen Developers"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 wasm-bindgen = { path = '../' }

crates/backend/Cargo.toml

@@ -9,7 +9,7 @@ documentation = "https://docs.rs/wasm-bindgen-backend"
 description = """
 Backend code generation of the wasm-bindgen tool
 """
-edition = "2018"
+edition = "2021"
 rust-version = "1.57"
 
 [features]

crates/cli-support/Cargo.toml

@@ -9,7 +9,7 @@ documentation = "https://docs.rs/wasm-bindgen-cli-support"
 description = """
 Shared support for the wasm-bindgen-cli package, an internal dependency
 """
-edition = '2018'
+edition = "2021"
 rust-version = "1.76"
 
 [dependencies]

crates/cli/Cargo.toml

@@ -11,7 +11,7 @@ description = """
 Command line interface of the `#[wasm_bindgen]` attribute and project. For more
 information see https://github.com/rustwasm/wasm-bindgen.
 """
-edition = '2018'
+edition = "2021"
 default-run = 'wasm-bindgen'
 rust-version = "1.76"
 

crates/cli/src/bin/wasm-bindgen-test-runner/headless.rs

@@ -71,7 +71,10 @@ pub fn run(server: &SocketAddr, shell: &Shell, timeout: u64) -> Result<(), Error
             let mut cmd = Command::new(path);
             cmd.args(args).arg(format!("--port={}", driver_addr.port()));
             let mut child = BackgroundChild::spawn(path, &mut cmd, shell)?;
-            drop_log = Box::new(move || child.print_stdio_on_drop = false);
+            drop_log = Box::new(move || {
+                let _ = &child;
+                child.print_stdio_on_drop = false;
+            });
 
             // Wait for the driver to come online and bind its port before we try to
             // connect to it.

crates/cli/tests/reference.rs

@@ -62,7 +62,7 @@ fn runtest(test: &Path) -> Result<()> {
             name = \"reference-test\"
             authors = []
             version = \"1.0.0\"
-            edition = '2018'
+            edition = '2021'
 
             [dependencies]
             wasm-bindgen = {{ path = '{}' }}

crates/cli/tests/wasm-bindgen/main.rs

@@ -79,7 +79,7 @@ impl Project {
                         name = \"{}\"
                         authors = []
                         version = \"1.0.0\"
-                        edition = '2018'
+                        edition = '2021'
 
                         [dependencies]
                         wasm-bindgen = {{ path = '{}' }}
@@ -207,7 +207,7 @@ fn bin_crate_works() {
                     name = \"bin_crate_works\"
                     authors = []
                     version = \"1.0.0\"
-                    edition = '2018'
+                    edition = '2021'
 
                     [dependencies]
                     wasm-bindgen = {{ path = '{}' }}
@@ -254,7 +254,7 @@ fn bin_crate_works_without_name_section() {
                     name = \"bin_crate_works_without_name_section\"
                     authors = []
                     version = \"1.0.0\"
-                    edition = '2018'
+                    edition = '2021'
 
                     [dependencies]
                     wasm-bindgen = {{ path = '{}' }}

crates/cli/tests/wasm-bindgen/npm.rs

@@ -77,7 +77,7 @@ fn npm_conflict_rejected() {
                 name = "npm_conflict_rejected"
                 authors = []
                 version = "1.0.0"
-                edition = '2018'
+                edition = '2021'
 
                 [dependencies]
                 wasm-bindgen = {{ path = '{}' }}
@@ -124,7 +124,7 @@ fn npm_conflict_rejected() {
                 name = "bar"
                 authors = []
                 version = "1.0.0"
-                edition = '2018'
+                edition = '2021'
 
                 [dependencies]
                 wasm-bindgen = {{ path = '{}' }}

crates/example-tests/Cargo.toml

@@ -2,7 +2,7 @@
 name = "example-tests"
 version = "0.1.0"
 authors = ["The wasm-bindgen Developers"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 anyhow = "1.0.75"