'Temporary' fix to avoid breakage from to_json and to_proto on crate_info() on some bazel versions.

PiperOrigin-RevId: 680648840

rust/defs.bzl

@@ -1,7 +1,4 @@
-"""This file implements an experimental, do-not-use-kind of rust_proto_library.
-
-Disclaimer: This project is experimental, under heavy development, and should not
-be used yet."""
+"""This file implements rust_proto_library."""
 
 load("@rules_rust//rust:defs.bzl", "rust_common")
 load("//bazel/common:proto_common.bzl", "proto_common")
@@ -20,7 +17,6 @@ def rust_proto_library(name, deps, **args):
 
     Hopefully no user will ever need to read this code.
 
-
     Args:
         name: name of the Rust protobuf target.
         deps: proto_library target for which to generate Rust gencode.
@@ -102,6 +98,12 @@ def _rust_proto_library_impl(ctx):
     pkg, name = _user_visible_label(ctx).rsplit(":")
     label = struct(**{"name": name, "pkg": pkg})
     fields["name"] = label_to_crate_name(ctx, label, toolchain)
+
+    # These two fields present on the dir(crate_info) but break on some versions of Bazel when
+    # passed back in to crate_info. Strip them for now.
+    fields.pop("to_json")
+    fields.pop("to_proto")
+
     crate_info_with_rust_proto_name = rust_common.crate_info(**fields)
 
     return [