Setup CI to test with various toolchains

1 files changed, 2 insertions, 0 deletions

diff --git a/README.md b/README.md
index 551aeb1..dc5a07e 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,8 @@ expected_map.insert("y".to_string(), 2);
 assert_eq!(deserialized_map, expected_map);
 ```
 
+`dhall` requires Rust >= 1.42.0
+
 ## Standard-compliance
 
 This implementation currently supports most of the [Dhall