chore: enable feature flag check on windows (#1798)

Author: taiki-e

ci/azure-test-stable.yml

@@ -22,8 +22,6 @@ jobs:
 
   - script: cargo install cargo-hack
     displayName: Install cargo-hack
-    # FIXME(taiki-e): many features of current cargo-hack are not available on windows: https://github.com/taiki-e/cargo-hack/issues/3
-    condition: not(eq(variables['Agent.OS'], 'Windows_NT'))
 
   - template: azure-is-release.yml
 
@@ -53,8 +51,6 @@ jobs:
         CI: 'True'
       displayName: ${{ crate }} - cargo hack check --each-feature
       workingDirectory: $(Build.SourcesDirectory)/${{ crate }}
-      # FIXME(taiki-e): many features of current cargo-hack are not available on windows: https://github.com/taiki-e/cargo-hack/issues/3
-      condition: not(eq(variables['Agent.OS'], 'Windows_NT'))
 
   - template: azure-patch-crates.yml
 
@@ -84,5 +80,3 @@ jobs:
         CI: 'True'
       displayName: ${{ crate }} - cargo hack check --each-feature
       workingDirectory: $(Build.SourcesDirectory)/${{ crate }}
-      # FIXME(taiki-e): many features of current cargo-hack are not available on windows: https://github.com/taiki-e/cargo-hack/issues/3
-      condition: not(eq(variables['Agent.OS'], 'Windows_NT'))

tokio/src/sync/mod.rs

@@ -45,6 +45,10 @@ cfg_not_sync! {
     cfg_signal! {
         pub(crate) mod mpsc;
         pub(crate) mod semaphore;
+
+        cfg_not_rt_threaded! {
+            pub(crate) mod oneshot;
+        }
     }
 }