--- a/README.md
+++ b/README.md
@@ -11,3 +11,8 @@
 There is already 3 implementations of this standard: in [C++](https://github.com/google/jsonnet), in [Go](https://github.com/google/go-jsonnet/) and in [Scala](https://github.com/databricks/sjsonnet)
 
 It is fun to write one in Rust :D
+
+## Spec support
+
+- Can pass all of original `examples` tests
+- Can pass all of original `test_suite` tests, expect those, which checks golden output for stacktraces (vanilla-like stacktraces are implemented, but look is not 100% identical): ![Example output](./traces.png)