Upgrade dependencies and minimum CI version

.github/workflows/rust.yml

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

Cargo.toml

@@ -13,13 +13,13 @@ edition = "2018"
 [dependencies]
 parking_lot_core = { path = "core", version = "0.8.0" }
 lock_api = { path = "lock_api", version = "0.4.0" }
-instant = "0.1.4"
+instant = "0.1.9"
 
 [dev-dependencies]
-rand = "0.7.3"
+rand = "0.8.3"
 
 # Used when testing out serde support.
-bincode = "1.3.0"
+bincode = "1.3.3"
 
 [features]
 default = []

core/Cargo.toml

@@ -13,18 +13,18 @@ edition = "2018"
 cfg-if = "1.0.0"
 smallvec = "1.6.1"
 petgraph = { version = "0.5.1", optional = true }
-thread-id = { version = "3.3.0", optional = true }
-backtrace = { version = "0.3.49", optional = true }
-instant = "0.1.4"
+thread-id = { version = "4.0.0", optional = true }
+backtrace = { version = "0.3.60", optional = true }
+instant = "0.1.9"
 
 [target.'cfg(unix)'.dependencies]
-libc = "0.2.71"
+libc = "0.2.95"
 
 [target.'cfg(target_os = "redox")'.dependencies]
-redox_syscall = "0.2.4"
+redox_syscall = "0.2.8"
 
 [target.'cfg(windows)'.dependencies]
-winapi = { version = "0.3.8", features = ["winnt", "ntstatus", "minwindef",
+winapi = { version = "0.3.9", features = ["winnt", "ntstatus", "minwindef",
     "winerror", "winbase", "errhandlingapi", "handleapi"] }
 
 [features]

core/src/spinwait.rs

@@ -6,14 +6,14 @@
 // copied, modified, or distributed except according to those terms.
 
 use crate::thread_parker;
-use std::sync::atomic::spin_loop_hint;
+use std::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 {
-        spin_loop_hint()
+        hint::spin_loop()
     }
 }
 

lock_api/Cargo.toml

@@ -16,7 +16,7 @@ owning_ref = { version = "0.4.1", optional = true }
 # Optional dependency for supporting serde.  Optional crates automatically
 # create a feature with the same name as the crate, so if you need serde
 # support, just pass "--features serde" when building this crate.
-serde = { version = "1.0.114", default-features = false, optional = true }
+serde = { version = "1.0.126", default-features = false, optional = true }
 
 [features]
 nightly = []