message: change separators for easy parsing.
diff: @@ -200,7 +200,7 @@ string OpKernel::TraceString(OpKernelContext* ctx, bool verbose) {
  DataTypeString(input_dtype), ctx->input(i).shape().DebugString()));
  }
  return strings::StrCat(trace_string, "#shape=(",
  - absl::StrJoin(tensor_shapes, ","), ")#");
  + absl::StrJoin(tensor_shapes, ";"), ")#");
  }
  void AsyncOpKernel::Compute(OpKernelContext* context) {
  