[beast] TRAVIS: allow ubuntu:trusty builds to fail

[Tim Janik <timj src gnome org>]

commit 5752711e4a32641def8340b8c0e48f27e057ca8b
Author: Tim Janik <timj gnu org>
Date:   Tue Mar 22 11:08:16 2016 +0100

    TRAVIS: allow ubuntu:trusty builds to fail
    
    Trusy provides g++-4.8.4 which fails to compile some of our C++11 templates,
    so for now we allow these builds to fail.
    
    Signed-off-by: Tim Janik <timj gnu org>

 .travis.yml |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/.travis.yml b/.travis.yml
index d840880..0e14d9e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,8 +8,6 @@ dist: trusty
 sudo: required
 services: docker
 language: c
-matrix:
-  fast_finish: true
 
 env:
   global:
@@ -20,6 +18,10 @@ env:
     - XFROM="ubuntu:trusty" XUP="trusty"
     - XFROM="ubuntu:wily"   XUP="wily"
     - XFROM="ubuntu:xenial" XUP="xenial"
+matrix:
+  fast_finish: true
+  allow_failures:
+    - env: XFROM="ubuntu:trusty" XUP="trusty"
 
 before_install:
   - uname -a