diff --git a/parser/src/lib.rs b/parser/src/lib.rs
index 746bb1e..c61d7cb 100644
--- a/parser/src/lib.rs
+++ b/parser/src/lib.rs
@@ -1,4 +1,3 @@
-#![feature(let_else)]
 #![allow(dead_code)] // TODO: no
 #![warn(rust_2018_idioms)]
 
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
deleted file mode 100644
index 5ea2bf5..0000000
--- a/rust-toolchain.toml
+++ /dev/null
@@ -1,2 +0,0 @@
-[toolchain]
-channel = "nightly-2022-07-14"