Fix dependency_on_unit_never_type_fallback (rust-lang/rust#123748)

Author: thash

src/exec.rs

@@ -55,15 +55,6 @@ impl std::fmt::Display for FindMethodError {
 
 impl std::error::Error for FindMethodError {}
 
-/*
-TODO: deal with the following warning:
-        this function depends on never type fallback being `()`
-        this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-        for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
-        specify the types explicitly
-        `#[warn(dependency_on_unit_never_type_fallback)]` on by defaultrustcClick for full compiler diagnostic
-        exec.rs(84, 37): in edition 2024, the requirement `!: Serialize` will fail
- */
 pub async fn main(args: &ExecArgs) -> Result<(), Box<dyn Error>> {
     debug!("{:?}", args);
 
@@ -90,7 +81,8 @@ pub async fn main(args: &ExecArgs) -> Result<(), Box<dyn Error>> {
     debug!("Raw result:\n{:#?}", &res);
 
     // Print the result to stdout in pretty JSON format
-    println!("{}", to_string_pretty(&from_str(&res)?)?);
+    let json: Value = from_str(&res)?;
+    println!("{}", to_string_pretty(&json)?);
 
     Ok(())
 }