Undo MSRV bump

.github/workflows/rust.yml

@@ -16,11 +16,11 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu, macos, windows]
-        channel: [1.49.0, stable, beta, nightly]
+        channel: [1.41.0, stable, beta, nightly]
         feature: [arc_lock, serde, deadlock_detection]
         exclude: 
           - feature: deadlock_detection
-            channel: '1.49.0'
+            channel: '1.41.0'
         include:
           - channel: nightly
             feature: nightly

README.md

@@ -132,7 +132,7 @@ changes to the core API do not cause breaking changes for users of `parking_lot`
 
 ## Minimum Rust version
 
-The current minimum required Rust version is 1.36. Any change to this is
+The current minimum required Rust version is 1.41. Any change to this is
 considered a breaking change and will require a major version bump.
 
 ## License

core/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "parking_lot_core"
-version = "0.8.4"
+version = "0.8.5"
 authors = ["Amanieu d'Antras <amanieu@gmail.com>"]
 description = "An advanced API for creating custom synchronization primitives."
 license = "Apache-2.0/MIT"

core/src/spinwait.rs

@@ -6,14 +6,14 @@
 // copied, modified, or distributed except according to those terms.
 
 use crate::thread_parker;
-use std::hint;
+use std::sync::atomic::spin_loop_hint;
 
 // Wastes some CPU time for the given number of iterations,
 // using a hint to indicate to the CPU that we are spinning.
 #[inline]
 fn cpu_relax(iterations: u32) {
     for _ in 0..iterations {
-        hint::spin_loop()
+        spin_loop_hint()
     }
 }