Report ImportErrors in distributed mode.

testing/acceptance_test.py

@@ -33,7 +33,7 @@ class TestDistribution:
         result = testdir.runpytest(p1, "-n1")
         assert result.ret == 1
         result.stdout.fnmatch_lines([
-            "*1 failed*",
+            "E   ImportError: No module named __import_of_missing_module",
         ])
 
     def test_n1_skip(self, testdir):

xdist/dsession.py

@@ -285,8 +285,7 @@ class DSession:
         self._handlefailures(rep)
 
     def slave_collectreport(self, node, rep):
-        #self.report_line("collectreport %s: %s" %(rep.id, rep.status))
-        #rep.node = node
+        self.config.hook.pytest_collectreport(report=rep)
         self._handlefailures(rep)
 
     def _handlefailures(self, rep):