Disable ASAN when testing against Clang 3.8. The Ubuntu packages are missing some files ATM (https://llvm.org/bugs/show_bug.cgi?id=22757).
diff --git a/.travis.yml b/.travis.yml
index 1c472d7..37226d0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -57,7 +57,10 @@
       env: MY_CC=clang-3.7 MY_CXX=clang++-3.7 STL=libstdc++ NO_ASAN=1
     - os: linux
       compiler: clang
-      env: MY_CC=clang-3.8 MY_CXX=clang++-3.8 STL=libstdc++
+      # ASAN is disabled because it would hit this error:
+      # ld: cannot find [...]/libclang_rt.asan-x86_64.a
+      # TODO: check again once the clang-3.8 packages include that file.
+      env: MY_CC=clang-3.8 MY_CXX=clang++-3.8 STL=libstdc++ NO_ASAN=1
     # Clang on Linux with libc++
     - os: linux
       compiler: clang
@@ -73,7 +76,10 @@
       env: MY_CC=clang-3.7 MY_CXX=clang++-3.7 STL=libc++ NO_ASAN=1
     - os: linux
       compiler: clang
-      env: MY_CC=clang-3.8 MY_CXX=clang++-3.8 STL=libc++
+      # ASAN is disabled because it would hit this error:
+      # ld: cannot find [...]/libclang_rt.asan-x86_64.a
+      # TODO: check again once the clang-3.8 packages include that file.
+      env: MY_CC=clang-3.8 MY_CXX=clang++-3.8 STL=libc++ NO_ASAN=1
     # GCC on OS X
     - os: osx
       compiler: gcc