Allow conformance test runner to tolerate crashes, and re-enable conformance tests.
diff --git a/travis.sh b/travis.sh
index 97a769d..5a77a2a 100755
--- a/travis.sh
+++ b/travis.sh
@@ -53,9 +53,7 @@
 
   (cd csharp/src; mono ../../nuget.exe restore)
   csharp/buildall.sh
-  # TODO(xiaofeng): The conformance tests are disable because the testee program
-  # crashes on some inputs.
-  # cd conformance && make test_csharp && cd ..
+  cd conformance && make test_csharp && cd ..
 }
 
 build_golang() {