CI: Allow 2.7 --pre failures for now

Author: effigies

.travis.yml

@@ -60,6 +60,16 @@ matrix:
           NIPYPE_EXTRAS="doc,tests,nipy,profiler"
           EXTRA_PIP_FLAGS="--pre $EXTRA_PIP_FLAGS --find-links $PRE_WHEELS"
           CI_SKIP_TEST=1
+  allow_failures:
+    - python: 2.7
+      env:
+        - INSTALL_DEB_DEPENDECIES=true
+          EXTRA_WHEELS="https://5cf40426d9f06eb7461d-6fe47d9331aba7cd62fc36c7196769e4.ssl.cf2.rackcdn.com"
+          PRE_WHEELS="https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com"
+          EXTRA_PIP_FLAGS="--find-links=$EXTRA_WHEELS"
+          NIPYPE_EXTRAS="doc,tests,nipy,profiler"
+          EXTRA_PIP_FLAGS="--pre $EXTRA_PIP_FLAGS --find-links $PRE_WHEELS"
+          CI_SKIP_TEST=1
 
 addons:
   apt: