Delete rust_test_binary

rust/defs.bzl

@@ -33,7 +33,6 @@ load(
     _rust_shared_library = "rust_shared_library",
     _rust_static_library = "rust_static_library",
     _rust_test = "rust_test",
-    _rust_test_binary = "rust_test_binary",
     _rust_test_suite = "rust_test_suite",
 )
 load(
@@ -77,9 +76,6 @@ rust_binary = _rust_binary
 rust_test = _rust_test
 # See @rules_rust//rust/private:rust.bzl for a complete description.
 
-rust_test_binary = _rust_test_binary
-# See @rules_rust//rust/private:rust.bzl for a complete description.
-
 rust_test_suite = _rust_test_suite
 # See @rules_rust//rust/private:rust.bzl for a complete description.
 

rust/private/rust.bzl

@@ -1127,32 +1127,6 @@ rust_test = rule(
 """),
 )
 
-rust_test_binary = rule(
-    implementation = _rust_test_impl,
-    provides = _common_providers,
-    attrs = dict(_common_attrs.items() +
-                 _rust_test_attrs.items()),
-    executable = True,
-    fragments = ["cpp"],
-    host_fragments = ["cpp"],
-    toolchains = [
-        str(Label("//rust:toolchain")),
-        "@bazel_tools//tools/cpp:toolchain_type",
-    ],
-    incompatible_use_toolchain_transition = True,
-    doc = dedent("""\
-        Builds a Rust test binary, without marking this rule as a Bazel test.
-
-        **Warning**: This rule is currently experimental.
-
-        This should be used when you want to run the test binary from a different test
-        rule (such as [`sh_test`](https://docs.bazel.build/versions/master/be/shell.html#sh_test)),
-        and know that running the test binary directly will fail.
-
-        See `rust_test` for example usage.
-        """),
-)
-
 def rust_test_suite(name, srcs, **kwargs):
     """A rule for creating a test suite for a set of `rust_test` targets.
 

rust/rust.bzl

@@ -31,7 +31,6 @@ load(
     _rust_shared_library = "rust_shared_library",
     _rust_static_library = "rust_static_library",
     _rust_test = "rust_test",
-    _rust_test_binary = "rust_test_binary",
 )
 load("//rust/settings:incompatible.bzl", "fail_when_enabled")
 
@@ -70,9 +69,6 @@ rust_binary = _rust_binary
 rust_test = _rust_test
 # See @rules_rust//rust/private:rust.bzl for a complete description.
 
-rust_test_binary = _rust_test_binary
-# See @rules_rust//rust/private:rust.bzl for a complete description.
-
 rust_benchmark = _rust_benchmark
 # See @rules_rust//rust/private:rust.bzl for a complete description.