build(rust): incompatible-rust-versions = "fallback" + cargo update (#8407)

.cargo/config.toml

@@ -10,3 +10,6 @@ rule = "run -p rulegen"
 
 # Build oxlint in release mode
 oxlint = "build --release --bin oxlint --features allocator"
+
+[resolver]
+incompatible-rust-versions = "fallback"

Cargo.toml

@@ -11,7 +11,7 @@ homepage = "https://oxc.rs"
 keywords = ["JavaScript", "TypeScript", "linter", "minifier", "parser"]
 license = "MIT"
 repository = "https://github.com/oxc-project/oxc"
-rust-version = "1.79" # Support last 6 minor versions.
+rust-version = "1.80" # Support last 5 minor versions.
 description = "A collection of JavaScript tools written in Rust."
 
 # <https://doc.rust-lang.org/rustc/lints/listing/allowed-by-default.html>

crates/oxc_data_structures/src/stack/non_null.rs

@@ -18,12 +18,6 @@ use std::{cmp::Ordering, ptr::NonNull as NativeNonNull};
 #[repr(transparent)]
 pub struct NonNull<T>(NativeNonNull<T>);
 
-#[cfg(clippy)]
-#[expect(clippy::incompatible_msrv)]
-unsafe fn _non_null_add_is_not_stable(ptr: NativeNonNull<u8>) -> NativeNonNull<u8> {
-    ptr.add(1)
-}
-
 impl<T> NonNull<T> {
     #[inline(always)]
     pub const unsafe fn new_unchecked(ptr: *mut T) -> Self {