travis: use trusty for coverage build

This works now and precise is in the process of being decommissioned.

Closes https://github.com/curl/curl/pull/2476

diff --git a/.travis.yml b/.travis.yml
index e80b585acb14fd2512aea4be05c19b80c184b037..4b01ea7f98b6ff70d53094c07be24e04fe3d58a8 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -85,7 +85,7 @@ matrix:
           env: T=cmake
         - os: linux
           compiler: gcc
-          dist: precise
+          dist: trusty
           env: T=coverage
         - os: linux
           compiler: gcc