Update MSRV to 1.82.0 (#9956)

* Update MSRV to 1.82.0

Coupled with today's release of Rust 1.84.0

prtest:full

* Enable necessary target feature for intrinsic

* Remove unnecessary `#[no_mangle]`

.github/actions/install-rust/action.yml

@@ -28,7 +28,7 @@ runs:
         elif [ "${{ inputs.toolchain }}" = "msrv" ]; then
           echo "version=1.$msrv.0" >> "$GITHUB_OUTPUT"
         elif [ "${{ inputs.toolchain }}" = "wasmtime-ci-pinned-nightly" ]; then
-          echo "version=nightly-2024-11-28" >> "$GITHUB_OUTPUT"
+          echo "version=nightly-2025-01-09" >> "$GITHUB_OUTPUT"
         else
           echo "version=${{ inputs.toolchain }}" >> "$GITHUB_OUTPUT"
         fi

Cargo.toml

@@ -168,7 +168,7 @@ authors = ["The Wasmtime Project Developers"]
 edition = "2021"
 # Wasmtime's current policy is that this number can be no larger than the
 # current stable release of Rust minus 2.
-rust-version = "1.81.0"
+rust-version = "1.82.0"
 
 [workspace.lints.rust]
 # Turn on some lints which are otherwise allow-by-default in rustc.

crates/test-programs/src/bin/cli_export_cabi_realloc.rs

@@ -2,7 +2,6 @@
 //! to allocate the adapter stack, hence this test.
 
 #[export_name = "cabi_realloc"]
-#[no_mangle]
 unsafe extern "C" fn cabi_realloc(
     old_ptr: *mut u8,
     old_len: usize,

crates/wasmtime/src/runtime/vm/libcalls.rs

@@ -1301,8 +1301,9 @@ pub mod relocs {
     #[cfg(target_arch = "x86_64")]
     use core::arch::x86_64::__m128i;
     #[cfg(target_arch = "x86_64")]
+    #[target_feature(enable = "sse")]
     #[allow(improper_ctypes_definitions)]
-    pub extern "C" fn x86_pshufb(a: __m128i, b: __m128i) -> __m128i {
+    pub unsafe extern "C" fn x86_pshufb(a: __m128i, b: __m128i) -> __m128i {
         union U {
             reg: __m128i,
             mem: [u8; 16],