added loads of debugging

app/coffee/LockManager.coffee

@@ -2,7 +2,8 @@ Settings = require('settings-sharelatex')
 logger = require "logger-sharelatex"
 Lockfile = require('lockfile') # from https://github.com/npm/lockfile
 Errors = require "./Errors"
-
+fs = require("fs")
+Path = require("path")
 module.exports = LockManager =
 	LOCK_TEST_INTERVAL: 1000 # 50ms between each test of the lock
 	MAX_LOCK_WAIT_TIME: 15000 # 10s maximum time to spend trying to get the lock
@@ -15,7 +16,9 @@ module.exports = LockManager =
 			stale: @LOCK_STALE
 		Lockfile.lock path, lockOpts, (error) ->
 			return callback new Errors.AlreadyCompilingError("compile in progress")	if error?.code is 'EEXIST'
-			return callback(error) if error?
+			if error?
+				logger.err error:error, path:path, statLock:fs.lstatSync(path), statDir: fs.lstatSync(path.dirname(path)), "unable to get lock"
+				return callback(error) 
 			runner (error1, args...) ->
 				Lockfile.unlock path, (error2) ->
 					error = error1 or error2