diff --git a/.gitignore b/.gitignore
index 96ef6c0b944..ea8c4bf7f35 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
 /target
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 00000000000..46312c09657
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,304 @@
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diff --git a/crates/core_simd/src/lib.rs b/crates/core_simd/src/lib.rs
index fde406bda70..2d68e4cce85 100644
--- a/crates/core_simd/src/lib.rs
+++ b/crates/core_simd/src/lib.rs
@@ -18,6 +18,7 @@
 #![cfg_attr(feature = "generic_const_exprs", allow(incomplete_features))]
 #![warn(missing_docs, clippy::missing_inline_in_public_items)] // basically all items, really
 #![deny(unsafe_op_in_unsafe_fn, clippy::undocumented_unsafe_blocks)]
+#![allow(internal_features)]
 #![unstable(feature = "portable_simd", issue = "86656")]
 //! Portable SIMD module.