THRIFT-4186 Add travis build for Rust
Client: rs
Patch: Allen George <allen.george@gmail.com>

This closes #1260
diff --git a/test/known_failures_Linux.json b/test/known_failures_Linux.json
index 5ca6d4e..efa0f56 100644
--- a/test/known_failures_Linux.json
+++ b/test/known_failures_Linux.json
@@ -224,5 +224,7 @@
   "hs-py3_json_framed-ip",
   "java-d_compact_buffered-ip",
   "java-d_compact_buffered-ip-ssl",
-  "java-d_compact_framed-ip"
+  "java-d_compact_framed-ip",
+  "rs-dart_binary_framed-ip",
+  "rs-dart_compact_framed-ip"
 ]