Fix linter warnings from Clippy

src/fetcher.rs

@@ -67,14 +67,14 @@ where
         parse(BufReader::with_capacity(8_000_000, file))
     }
 
-    pub fn fetch<'a>(&'a self, key: i64) -> Option<&'a Story> {
+    pub fn fetch(&self, key: i64) -> Option<&Story> {
         match self.index.binary_search_by_key(&key, |story| story.id) {
             Ok(i) => self.index.get(i),
             Err(_) => None,
         }
     }
 
-    pub fn read<'a>(&self, path: &str) -> Result<Vec<u8>> {
+    pub fn read(&self, path: &str) -> Result<Vec<u8>> {
         use Error::*;
         use ZipError::*;
 
@@ -96,7 +96,7 @@ where
         Ok(buf)
     }
 
-    pub fn iter<'a>(&'a self) -> impl Iterator<Item = &'a Story> {
+    pub fn iter(&self) -> impl Iterator<Item = &Story> {
         self.index.iter()
     }
 }

src/parser.rs

@@ -9,7 +9,7 @@ use serde_json::from_str;
 use crate::error::{Error, Result};
 use crate::story::Story;
 
-const TRIM: &'static [char] = &['"', ',', ' ', '\t', '\n', '\r'];
+const TRIM: &[char] = &['"', ',', ' ', '\t', '\n', '\r'];
 
 pub fn parse(reader: impl BufRead) -> Result<Vec<Story>> {
     use Error::*;

src/story.rs

@@ -170,9 +170,10 @@ impl<'de> Deserialize<'de> for Color {
     {
         let object = Value::deserialize(d)?;
 
-        let text = object["hex"]
+        let text = object
-            .as_str()
+            .get("hex")
-            .ok_or(Error::custom("Color is missing hex value."))?;
+            .and_then(|value| value.as_str())
+            .ok_or_else(|| Error::custom("Color is missing hex value."))?;
 
         let array = hex::decode(text).map_err(|e| match e {
             _ => Error::custom("Color hex has invalid value."),