Test failures:

flutter/flutter

• [Mac-14] macOS xcodebuild test fails with "Test runner never began executing tests after launching" #149264
• [Mac-14] Testing flutter run on macOS device hangs and times out #149268
• Some mac tests blocked by waiting for Wi-Fi network selection on Mac-14 #150008
• Xcode compilation is slow on macOS 14 bots #150642

flutter/packages

• [Mac-14] macOS xcodebuild test fails with "Test runner never began executing tests after launching" #149264
• [Mac-14] xcode analyze fails on image_picker_macos #149266
• [Mac-14] Native tests failing due to module of wrong architecture  #149270
• [pigeon] [Mac-14] runPigeonIntegrationTests timeout in CI on macOS 14 #149329
• [path_provider] (mac) getApplicationDocumentsDirectory tests hanging/failing. #149713 (introduced by Disable sandboxing for macOS apps and tests in CI #149618)

flutter/engine

• [Mac-14] Impeller-golden for host_release fails on macOS 14 #149416
• Mac mac_host_engine sub builds may timeout when also installing Xcode #150011
• Various Linux linux_web_engine Mac tests time out on macOS 14 #150023
  • Error rate is minimal or not going to consider it a blocker
• [Mac-14] Test AppExtensionTests testAppExtensionLaunching flakey #150117

Infra Issues:

• Chromium Mac Bots become unresponsive and Xcode commands hang #157636
• Failure to install Xcode or invoke xcodebuild on mac bots #156614