xcodebuild builds test target but cannot run xctest

Question

I run a command in terminal

sudo /usr/bin/xcodebuild -project awesome.xcodeproj -scheme "AwesomeTests" 
-configuration Production test -derivedDataPath ~/Documents/buildData
-sdk "OS X 10.9"

last lines of output looks like

error: failed to launch '/Applications/Xcode.app/Contents/Developer/usr/bin/xctest'
-- error: Host::LaunchProcess (launch_info) => pid=0,
path='/Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework/Versions/A/Resources/debugserver'
err = Problems with launching via XPC. XPC error : Connection interrupted (0x00000005)
** TEST SUCCEEDED **

Before outputing these lines I'm prompted with: "xcodebuild is trying to take control of a root process. Type your password to allow this"

I'm using Xcode 5.0.2.

Answer 1

As @trojanfoe noted, the sudo was the cause of the error.

It seems like ~/Documents/buildData folder was created with root permissions and couldn't be accessed from xtest.