TEMPORARY: run CI against last nightly with working clippy

geofft · alex · commit 0db8a1c37d83 · 2019-08-18T15:12:00.000-05:00
refs #117 see also https://rust-lang.github.io/rustup-components-history/
diff --git a/.travis.yml b/.travis.yml
@@ -4,7 +4,7 @@ matrix:
 
 language: rust
 rust:
-    - nightly
+    - nightly-2019-08-15
 cache:
     - cargo: true
 
