diff --git a/test/ClangImporter/Dispatch_test.swift b/test/ClangImporter/Dispatch_test.swift
index 31081489f890a..bc2d412889ff8 100644
--- a/test/ClangImporter/Dispatch_test.swift
+++ b/test/ClangImporter/Dispatch_test.swift
@@ -1,5 +1,7 @@
 // RUN: %target-typecheck-verify-swift
 
+// REQUIRES: rdar112865148
+
 // REQUIRES: libdispatch
 // UNSUPPORTED: OS=linux-gnu
 // UNSUPPORTED: OS=linux-android
diff --git a/test/Concurrency/dispatch_inference.swift b/test/Concurrency/dispatch_inference.swift
index aed28603d2576..4e751652c28ae 100644
--- a/test/Concurrency/dispatch_inference.swift
+++ b/test/Concurrency/dispatch_inference.swift
@@ -22,7 +22,7 @@ func testMe() {
 func testUnsafeSendableInMainAsync() async {
   var x = 5
   DispatchQueue.main.async {
-    x = 17 // expected-error{{mutation of captured var 'x' in concurrently-executing code}}
+    x = 17 // expected-warning{{mutation of captured var 'x' in concurrently-executing code}}
   }
   print(x)
 }
@@ -30,7 +30,7 @@ func testUnsafeSendableInMainAsync() async {
 func testUnsafeSendableInAsync(queue: DispatchQueue) async {
   var x = 5
   queue.async {
-    x = 17 // expected-error{{mutation of captured var 'x' in concurrently-executing code}}
+    x = 17 // expected-warning{{mutation of captured var 'x' in concurrently-executing code}}
   }
 
   queue.sync {
diff --git a/utils/build-presets.ini b/utils/build-presets.ini
index d575960d70192..bd591736ec18f 100644
--- a/utils/build-presets.ini
+++ b/utils/build-presets.ini
@@ -394,7 +394,6 @@ install-llbuild
 install-swiftpm
 install-swift-driver
 install-swiftsyntax
-install-libcxx
 
 [preset: buildbot_incremental,tools=RA,stdlib=RA,apple_silicon]
 mixin-preset=buildbot_incremental,tools=RA,stdlib=RA
@@ -644,7 +643,6 @@ install-llbuild
 install-swiftpm
 install-swiftsyntax
 install-swift-driver
-install-libcxx
 
 # We need to build the unittest extras so we can test
 build-swift-stdlib-unittest-extra
@@ -1603,7 +1601,6 @@ libcxx
 install-llvm
 install-swift
 install-swiftsyntax
-install-libcxx
 
 # Build Playground support
 playgroundsupport
@@ -1661,7 +1658,6 @@ install-llbuild
 install-swiftpm
 install-swift-driver
 install-swiftsyntax
-install-libcxx
 install-swiftdocc
 
 # Build the stress tester and SwiftEvolve
@@ -1687,6 +1683,10 @@ sil-verify-all-macos-only
 skip-test-ios-host
 skip-test-watchos-host
 
+# Skip LLBuild test until GitHub issue is fixed:
+# https://github.com/apple/swift-llbuild/issues/894
+skip-test-llbuild
+
 [preset: llvm_project_pull_request]
 mixin-preset=buildbot_all_platforms,tools=RA,stdlib=RA
 
@@ -1741,7 +1741,6 @@ install-swift
 install-llbuild
 install-swiftpm
 install-swiftsyntax
-install-libcxx
 
 skip-test-swift
 skip-test-cmark