Appease nursery clippy

Author: sd2k

backend/src/path.rs

@@ -53,7 +53,7 @@ pub struct QueryId(String);
 
 impl QueryId {
     /// Create a `QueryId` from a string containing a pre-computed hash.
-    pub fn new(s: String) -> QueryId {
+    pub const fn new(s: String) -> Self {
         Self(s)
     }
 

backend/src/queries.rs

@@ -166,7 +166,7 @@ impl Query {
         // If this enum changes in future we'll probably want to early return
         // hence using `match` instead of `if let`.
         match self {
-            Query::Tail(target) => Ok(target),
+            Self::Tail(target) => Ok(target),
             // This could change in future; don't want a catch-all
             // pattern though as we should handle it properly.
         }

xtask/src/main.rs

@@ -30,7 +30,7 @@ fn go_target() -> Result<String, Box<dyn Error>> {
 
 fn watch(mut args: impl Iterator<Item = String>) -> Result<(), Box<dyn Error>> {
     let go_target = go_target()?;
-    let (build_cmd, cargo_target) = if let Some("release") = args.next().as_deref() {
+    let (build_cmd, cargo_target) = if args.next().as_deref() == Some("release") {
         ("build --release", "release")
     } else {
         ("build", "debug")