THRIFT-4395: fix rust build on xenial
Client: rs

This closes #1421
diff --git a/tutorial/rs/Cargo.toml b/tutorial/rs/Cargo.toml
index 9075db7..210a0da 100644
--- a/tutorial/rs/Cargo.toml
+++ b/tutorial/rs/Cargo.toml
@@ -7,7 +7,7 @@
 publish = false
 
 [dependencies]
-clap = "2.18.0"
+clap = "<2.28.0"
 ordered-float = "0.3.0"
 try_from = "0.2.0"