Try bionic

Author: hazzik

.travis.yml

@@ -1,18 +1,13 @@
-dist: trusty
+dist: bionic
 language: csharp
 mono: none
 dotnet: 2.1.300
-sudo: required
 services:
   - mysql
   - postgresql
   - docker
 env:
-  - DB=SqlServer2008 CONNECTION_STRING="Server=localhost;initial catalog=nhibernate;User Id=sa;Password=P@ssw0rd;packet size=4096;"
-  - DB=PostgreSQL CONNECTION_STRING="Host=localhost;Port=5432;Username=postgres;Database=nhibernate;Enlist=true;"
-  - DB=Firebird 
   - DB=MySQL CONNECTION_STRING="Server=127.0.0.1;Uid=root;Database=nhibernate;Old Guids=True;"   
-  - DB=SQLite 
 before_install:
   - curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -
   - curl https://packages.microsoft.com/config/ubuntu/14.04/prod.list | sudo tee /etc/apt/sources.list.d/microsoft.list