dotnet core 3.0 on ubuntu requires xenial or bionic

wilsoncg · wilsoncg · commit d6bb85cbf2c8 · 2020-05-27T19:13:11.000+01:00
https://travis-ci.community/t/not-able-to-install-net-core-3/5562/2
diff --git a/.travis.yml b/.travis.yml
@@ -2,8 +2,8 @@ language: csharp
 
 matrix:
   include:
-    - os: linux # Ubuntu 14.04
-      dist: trusty
+    - os: linux 
+      dist: xenial # Ubuntu 16.04 https://docs.travis-ci.com/user/reference/linux/
       sudo: false
       mono: latest
       dotnet: 3.0.100
