Update minimum supported Rust version.

jdm · web-flow · commit 12816c84272e · 2018-08-09T00:33:56.000-04:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,7 +3,7 @@ sudo: false
 
 matrix:
   include:
-    - rust: 1.13.0
+    - rust: 1.16.0
       install:
       script: cargo build
     - rust: stable
