Merge #659

659: Fix clippy error to add clippy job on Ci r=Kerollmops a=unvalley

## Related PR
This PR is for #673 

## What does this PR do?
- ~~add `Run Clippy` job to CI (rust.yml)~~
- apply `cargo clippy --fix` command
- fix some `cargo clippy` error manually (but warnings still remain on tests)

## PR checklist
Please check if your PR fulfills the following requirements:
- [x] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
- [x] Have you read the contributing guidelines?
- [x] Have you made sure that the title is accurate and descriptive of the changes?


Co-authored-by: unvalley <kirohi.code@gmail.com>
Co-authored-by: unvalley <38400669+unvalley@users.noreply.github.com>

filter-parser/src/lib.rs

@@ -168,7 +168,7 @@ fn ws<'a, O>(inner: impl FnMut(Span<'a>) -> IResult<O>) -> impl FnMut(Span<'a>)
 }
 
 /// value_list = (value ("," value)* ","?)?
-fn parse_value_list<'a>(input: Span<'a>) -> IResult<Vec<Token<'a>>> {
+fn parse_value_list(input: Span) -> IResult<Vec<Token>> {
     let (input, first_value) = opt(parse_value)(input)?;
     if let Some(first_value) = first_value {
         let value_list_el_parser = preceded(ws(tag(",")), parse_value);
@@ -335,13 +335,11 @@ fn parse_error_reserved_keyword(input: Span) -> IResult<FilterCondition> {
         Ok(result) => Ok(result),
         Err(nom::Err::Error(inner) | nom::Err::Failure(inner)) => match inner.kind() {
             ErrorKind::ExpectedValue(ExpectedValueKind::ReservedKeyword) => {
-                return Err(nom::Err::Failure(inner));
+                Err(nom::Err::Failure(inner))
             }
-            _ => return Err(nom::Err::Error(inner)),
+            _ => Err(nom::Err::Error(inner)),
         },
-        Err(e) => {
-            return Err(e);
-        }
+        Err(e) => Err(e),
     }
 }
 
@@ -401,7 +399,7 @@ pub mod tests {
     fn parse() {
         use FilterCondition as Fc;
 
-        fn p<'a>(s: &'a str) -> impl std::fmt::Display + 'a {
+        fn p(s: &str) -> impl std::fmt::Display + '_ {
             Fc::parse(s).unwrap().unwrap()
         }
 
@@ -494,7 +492,7 @@ pub mod tests {
     fn error() {
         use FilterCondition as Fc;
 
-        fn p<'a>(s: &'a str) -> impl std::fmt::Display + 'a {
+        fn p(s: &str) -> impl std::fmt::Display + '_ {
             Fc::parse(s).unwrap_err().to_string()
         }