Adding patch suggested by Qasim Abdullah @travis-ci

tilkinsc · tilkinsc · commit 32e88ed433df · 2021-10-15T19:50:09.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -32,6 +32,11 @@ jobs:
       script: ./travis.linux.sh
       os: linux
       dist: trusty
+      addons:
+        apt:
+          packages:
+            - libgnutls-openssl27
+            - libgnutls30
     - stage: build
       script: ./travis.mac.sh
       osx_image: xcode12.2
