Do not run coverage with clang, currently fails.
diff --git a/.travis.yml b/.travis.yml
index bf9c38e..a6db9e7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,6 +30,7 @@
 # instead of a 2*2*8 matrix (2*os + 2*compiler + 8*env),
 # exclude some builds on mac os x and linux
 # linux: 2*compiler + 5*env + mac: 2*compiler + 2*env
+# Note: coverage currently does not work with clang, "setup.py install for cryptography" fails
 matrix:
   exclude:
     - os: osx
@@ -52,6 +53,10 @@
             "CONFOPT='--enable-perlinterp --enable-pythoninterp --enable-rubyinterp --enable-luainterp'"
     - os: linux
       compiler: clang
+      env: BUILD=yes TEST=scripttests COVERAGE=yes CFLAGS=--coverage LDFLAGS=--coverage FEATURES=huge SHADOWOPT= SRCDIR=./src CHECK_AUTOCONF=no
+           "CONFOPT='--enable-perlinterp --enable-pythoninterp --enable-python3interp --enable-rubyinterp --enable-luainterp'"
+    - os: linux
+      compiler: clang
       env: BUILD=no TEST=unittests COVERAGE=yes CFLAGS=--coverage LDFLAGS=--coverage FEATURES=huge SHADOWOPT= SRCDIR=./src CHECK_AUTOCONF=yes
     - os: linux
       compiler: clang