Merge pull request #2643 from cgwalters/rust-2021

rust: Switch to 2021 edition, bump MSRV, a few `format!` updates

rust-bindings/src/object_name.rs

@@ -86,7 +86,7 @@ mod tests {
     #[test]
     fn should_stringify_object_name() {
         let object_name = ObjectName::new("abcdef123456", ObjectType::DirTree);
-        let stringified = format!("{}", object_name);
+        let stringified = format!("{object_name}");
         assert_eq!(stringified, "abcdef123456.dirtree");
     }
 

rust-bindings/sys/Cargo.toml

@@ -73,7 +73,7 @@ links = "ostree-1"
 name = "ostree-sys"
 repository = "https://github.com/ostreedev/ostree-rs"
 version = "0.10.0"
-edition = "2018"
+edition = "2021"
 [package.metadata.docs.rs]
 features = ["dox"]
 [package.metadata.system-deps.ostree_1]