async-trait

Author: mikea

MODULE.bazel

@@ -16,9 +16,13 @@ cc_configure = use_extension("@rules_cc//cc:extensions.bzl", "cc_configure_exten
 use_repo(cc_configure, "local_config_cc")
 
 rust = use_extension("@rules_rust//rust:extensions.bzl", "rust")
+
 # nightly/2025-04-03 doesn't work with --config=bench
 # https://github.com/bazelbuild/rules_rust/issues/3459
-rust.toolchain(versions = ["1.86.0", "nightly/2025-02-20"])
+rust.toolchain(versions = [
+    "1.86.0",
+    "nightly/2025-02-20",
+])
 use_repo(rust, "rust_toolchains")
 
 register_toolchains("@rust_toolchains//:all")

kj-rs/io/BUILD.bazel

@@ -31,6 +31,9 @@ rust_library(
     srcs = ["lib.rs"],
     edition = "2024",
     visibility = ["//visibility:public"],
+    proc_macro_deps = [
+        "@crates.io//:async-trait",
+    ],
     deps = [
         ":bridge_cpp",
         "//kj-rs",
@@ -64,6 +67,9 @@ rust_library(
     srcs = ["tests.rs"],
     edition = "2024",
     visibility = ["//visibility:public"],
+    proc_macro_deps = [
+        "@crates.io//:async-trait",
+    ],
     deps = [
         ":io",
         ":tests_bridge",