Update min rust version to 1.13.0 to support '?' feature.

7 years ago · 3cd8c8c44a
1 changed files with 1 additions and 1 deletions
--- a/.travis.yml
+++ b/.travis.yml
@ -6,7 +6,7 @@ rust:
 matrix:
  include:
    # Minimum version supported
-    - rust: 1.9.0
+    - rust: 1.13.0
      install:
      script: cargo build