Clean up warnings

src/parse.rs

@@ -2,14 +2,12 @@ use std::str::FromStr;
 
 use itertools::Itertools;
 use nom::{
-    branch::{alt, Alt},
-    bytes::complete::{tag, tag_no_case},
+    branch::alt,
     character::complete::{char, digit1},
     combinator::map_res,
     IResult,
 };
 use thiserror::Error;
-use unicase::UniCase;
 
 use crate::{CronEntry, CronSpecifier};
 
@@ -86,7 +84,7 @@ pub(crate) fn parse_entry(entry: &str) -> Result<CronEntry, Error> {
     let res: IResult<&str, CronEntry> = perform_entry_parse(entry);
     match res {
         Ok((remaining, result)) => {
-            ensure_all_data_parsed(remaining, &result)?;
+            ensure_all_data_parsed(remaining)?;
             ensure_ranges_valid(&result)?;
 
             Ok(result)
@@ -98,7 +96,7 @@ pub(crate) fn parse_entry(entry: &str) -> Result<CronEntry, Error> {
     }
 }
 
-fn ensure_all_data_parsed(remaining: &str, parsed_entry: &CronEntry) -> Result<(), Error> {
+fn ensure_all_data_parsed(remaining: &str) -> Result<(), Error> {
     if remaining.is_empty() {
         Ok(())
     } else {