Chore: Rust 1.72.0 Clippy lints, adjust MSRV

MSRV was bumped by serenity-next, and so we too must follow suit.

src/input/adapters/cached/compressed.rs

@@ -49,6 +49,7 @@ use symphonia_core::{
 };
 use tracing::{debug, trace};
 
+/// Configuration for a cached source.
 pub struct Config {
     /// Registry of audio codecs supported by the driver.
     ///
@@ -81,6 +82,9 @@ impl Default for Config {
 }
 
 impl Config {
+    /// Generate a storage configuration given an estimated storage bitrate
+    /// `cost_per_sec` in bytes/s.
+    #[must_use]
     pub fn default_from_cost(cost_per_sec: usize) -> Self {
         let streamcatcher = default_config(cost_per_sec);
         Self {

src/input/adapters/cached/mod.rs

@@ -15,7 +15,7 @@ use crate::constants::*;
 use crate::input::utils;
 use audiopus::Bitrate;
 use std::{mem, time::Duration};
-use streamcatcher::{Config, GrowthStrategy};
+use streamcatcher::{Config as ScConfig, GrowthStrategy};
 
 /// Estimates the cost, in B/s, of audio data compressed at the given bitrate.
 #[must_use]
@@ -44,6 +44,6 @@ pub fn raw_cost_per_sec(stereo: bool) -> usize {
 ///
 /// [`streamcatcher`]: https://docs.rs/streamcatcher/0.1.0/streamcatcher/struct.Config.html
 #[must_use]
-pub fn default_config(cost_per_sec: usize) -> Config {
-    Config::new().chunk_size(GrowthStrategy::Constant(5 * cost_per_sec))
+pub fn default_config(cost_per_sec: usize) -> ScConfig {
+    ScConfig::new().chunk_size(GrowthStrategy::Constant(5 * cost_per_sec))
 }