Remove dependency on third-party matches crate

Now that the MSRV is 1.45, this macro can be assumed to exist, since it
was introduced in 1.42.

data-url/Cargo.toml

@@ -9,9 +9,6 @@ edition = "2018"
 autotests = false
 rust-version = "1.45"
 
-[dependencies]
-matches = "0.1"
-
 [dev-dependencies]
 tester = "0.9"
 serde = {version = "1.0", features = ["derive"]}

data-url/src/lib.rs

@@ -15,9 +15,6 @@
 //! assert!(fragment.is_none());
 //! ```
 
-#[macro_use]
-extern crate matches;
-
 macro_rules! require {
     ($condition: expr) => {
         if !$condition {

form_urlencoded/Cargo.toml

@@ -12,5 +12,4 @@ rust-version = "1.45"
 test = false
 
 [dependencies]
-matches = "0.1"
 percent-encoding = { version = "2.1.0", path = "../percent_encoding" }

form_urlencoded/src/lib.rs

@@ -13,9 +13,6 @@
 //! Converts between a string (such as an URL’s query string)
 //! and a sequence of (name, value) pairs.
 
-#[macro_use]
-extern crate matches;
-
 use percent_encoding::{percent_decode, percent_encode_byte};
 use std::borrow::{Borrow, Cow};
 use std::str;

idna/Cargo.toml

@@ -28,7 +28,6 @@ serde_json = "1.0"
 [dependencies]
 unicode-bidi = "0.3"
 unicode-normalization = "0.1.17"
-matches = "0.1"
 
 [[bench]]
 name = "all"

idna/src/lib.rs

@@ -32,8 +32,9 @@
 //! > that minimizes the impact of this transition for client software,
 //! > allowing client software to access domains that are valid under either system.
 
+#[cfg(test)]
 #[macro_use]
-extern crate matches;
+extern crate assert_matches;
 
 pub mod punycode;
 mod uts46;

url/Cargo.toml

@@ -27,7 +27,6 @@ bencher = "0.1"
 [dependencies]
 form_urlencoded = { version = "1.0.0", path = "../form_urlencoded" }
 idna = { version = "0.2.0", path = "../idna", optional = true }
-matches = "0.1"
 percent-encoding = { version = "2.1.0", path = "../percent_encoding" }
 serde = {version = "1.0", optional = true, features = ["derive"]}
 

url/src/lib.rs

@@ -132,8 +132,6 @@ url = { version = "2", default-features = false }
 
 #![doc(html_root_url = "https://docs.rs/url/2.2.2")]
 
-#[macro_use]
-extern crate matches;
 pub use form_urlencoded;
 
 #[cfg(feature = "serde")]