test: fix hg version check

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>

.travis.yml

@@ -12,6 +12,7 @@ before_script:
   - pip show hg-git dulwich
 
 script:
+  - export TEST_OPTS='-v'
   - make test
 
 matrix:

test/hg-git.t

@@ -34,6 +34,17 @@ else
 	test_done
 fi
 
+hg_version=$(python2 -c 'from mercurial import util; print util.version()')
+
+echo "hg_version: $hg_version"
+
+case $hg_version in
+3.0*+*)
+	skip_all='skipping remote-hg tests; unsuported version of hg by hg-git'
+	test_done
+	;;
+esac
+
 # clone to a git repo with git
 git_clone_git () {
 	git clone -q "hg::$1" $2 &&