Drop 1.1.0 as crossbeam needs `const fn`

To parse at least

diff --git a/.travis.yml b/.travis.yml
index e743edaff5983b973bfcd8f31d9660d5dc02d6a5..e21c9e18d48746ddce371290c25b1a448f25fa83 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,5 @@
 language: rust
 rust:
-  - 1.1.0
   - 1.2.0
   - stable
   - beta