[scan] replace the simctl boot command with simctl bootstatus, po…

…tentially fixing signal kill before running tests (#21026)

fastlane_core/lib/fastlane_core/device_manager.rb

@@ -204,9 +204,9 @@ def boot
         return unless os_type == "iOS"
         return if self.state == 'Booted'
 
+        # Boot the simulator and wait for it to finish booting
         UI.message("Booting #{self}")
-
-        `xcrun simctl boot #{self.udid} 2>/dev/null`
+        `xcrun simctl bootstatus #{self.udid} -b &> /dev/null`
         self.state = 'Booted'
       end
 

fastlane_core/spec/device_manager_spec.rb

@@ -512,6 +512,14 @@
 
         device.disable_slide_to_type
       end
+
+      it "boots the simulator" do
+        device = FastlaneCore::DeviceManager::Device.new(os_type: "iOS", os_version: "13.0", is_simulator: true, state: nil)
+
+        device.boot
+
+        expect(device.state).to eq('Booted')
+      end
     end
   end
 end