From 4e6082533ce5494b615721f463924db5f0d6ecdc Mon Sep 17 00:00:00 2001
From: Vinzent Steinberg <Vinzent.Steinberg@gmail.com>
Date: Tue, 22 Jan 2019 14:36:53 +0100
Subject: [PATCH] Guarantee and test minimal version

---
 .travis.yml | 1 +
 README.md   | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 8505d29..7022119 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,6 @@
 language: rust
 rust:
+  - 1.22.0
   - stable
   - beta
   - nightly
diff --git a/README.md b/README.md
index cc3bff3..576cf01 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,11 @@ The following optional feature is available:
 * `serde1` enables serialization, via Serde version 1.
 
 
+## Rust version requirements
+
+Rustc version 1.22 or greater is supported.
+
+
 ## Related Projects
 
 * [`quantiles`](https://crates.io/crates/quantiles):