switch from nightly to stable

rust-toolchain

@@ -1 +0,0 @@
-nightly

src/gd.rs

@@ -111,8 +111,11 @@ impl Song {
                     .send()?
                     .text()?
                     .split("~|~")
-                    .array_chunks()
+                    .chunks(2)
-                    .try_for_each(|[id, value]| -> Result<(), SongRequestError> {
+                    .into_iter()
+                    .try_for_each(|mut chunk| -> Result<(), SongRequestError> {
+                        let id = chunk.next().unwrap();
+                        let value = chunk.next().unwrap();
                         out.0[id.parse::<usize>()? - 1] = Some(value.into());
                         Ok(())
                     })

src/main.rs

@@ -1,4 +1,3 @@
-#![feature(iter_array_chunks)]
 //#![warn(clippy::all, clippy::pedantic, clippy::nursery)]
 #![allow(dead_code)]