diff --git a/BUILD.gn b/BUILD.gn
index e81ac64ddd..37e89626eb 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -64,7 +64,6 @@ main_extern = [
   "$rust_build:tokio_threadpool",
   "$rust_build:url",
   "//build_extra/flatbuffers/rust:flatbuffers",
-  ":msg_rs",
 ]
 
 ts_sources = [
@@ -126,6 +125,7 @@ rust_executable("deno") {
   extern = main_extern
   deps = [
     ":libdeno",
+    ":msg_rs",
     ":snapshot",
   ]
 }
diff --git a/build_extra/flatbuffers/rust/rust_flatbuffer.gni b/build_extra/flatbuffers/rust/rust_flatbuffer.gni
index 4255b21ec0..3d01562beb 100644
--- a/build_extra/flatbuffers/rust/rust_flatbuffer.gni
+++ b/build_extra/flatbuffers/rust/rust_flatbuffer.gni
@@ -5,9 +5,7 @@ import("//build_extra/rust/rust.gni")
 import("//build_extra/flatbuffers/flatbuffer.gni")
 
 template("rust_flatbuffer") {
-  action_name = "${target_name}_gen"
-  source_set_name = target_name
-  compiled_action_foreach(action_name) {
+  compiled_action_foreach(target_name) {
     tool = "$flatbuffers_build_location:flatc"
 
     sources = invoker.sources
@@ -32,13 +30,4 @@ template("rust_flatbuffer") {
       deps += invoker.deps
     }
   }
-
-  rust_crate(source_set_name) {
-    sources = get_target_outputs(":$action_name")
-    source_root = sources[0]
-    deps = [
-      ":$action_name",
-    ]
-    extern = [ "//build_extra/flatbuffers/rust:flatbuffers" ]
-  }
 }
diff --git a/build_extra/rust/run.py b/build_extra/rust/run.py
new file mode 100644
index 0000000000..276e799cc3
--- /dev/null
+++ b/build_extra/rust/run.py
@@ -0,0 +1,10 @@
+#!/usr/bin/env python
+# This file just executes its arguments, except that also adds OUT_DIR to the
+# environ. This is for compatibility with cargo.
+import subprocess
+import sys
+import os
+
+os.environ["OUT_DIR"] = os.path.abspath(".")
+assert os.path.isdir(os.environ["OUT_DIR"])
+sys.exit(subprocess.call(sys.argv[1:], env=os.environ))
diff --git a/build_extra/rust/rust.gni b/build_extra/rust/rust.gni
index 889e254675..c7ad376d0d 100644
--- a/build_extra/rust/rust.gni
+++ b/build_extra/rust/rust.gni
@@ -151,7 +151,7 @@ template("rust_crate") {
   }
 
   action(action_name) {
-    script = "//third_party/v8/tools/run.py"
+    script = "//build_extra/rust/run.py"
     sources = [
       source_root,
     ]
diff --git a/gclient_config.py b/gclient_config.py
index 93d744a3fc..2e6f7c6e0d 100644
--- a/gclient_config.py
+++ b/gclient_config.py
@@ -37,7 +37,7 @@ solutions = [{
     'cpplint'
 }, {
     'url':
-    'https://github.com/google/flatbuffers.git@d840856093fa7b935b0d6378c436bd633d006c8c',
+    'https://github.com/google/flatbuffers.git@160e8f2fdc9d5989e652709fae3fac0bd9aaed14',
     'name':
     'flatbuffers'
 }]
diff --git a/src/main.rs b/src/main.rs
index b1ee080880..3865e9253b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,7 +5,6 @@ extern crate getopts;
 extern crate hyper;
 extern crate hyper_rustls;
 extern crate libc;
-extern crate msg_rs as msg;
 extern crate rand;
 extern crate remove_dir_all;
 extern crate ring;
@@ -31,6 +30,7 @@ mod fs;
 mod http_util;
 mod isolate;
 mod libdeno;
+mod msg;
 pub mod ops;
 mod permissions;
 mod resources;
diff --git a/src/msg.rs b/src/msg.rs
new file mode 100644
index 0000000000..8b66704fc2
--- /dev/null
+++ b/src/msg.rs
@@ -0,0 +1,4 @@
+#![allow(unused_imports)]
+#![allow(dead_code)]
+use flatbuffers;
+include!(concat!(env!("OUT_DIR"), "/gen/msg_generated.rs"));
diff --git a/third_party b/third_party
index 56c4acce2e..c103d4620c 160000
--- a/third_party
+++ b/third_party
@@ -1 +1 @@
-Subproject commit 56c4acce2e8ffe979b2e7d52d2b3e6f613ed492e
+Subproject commit c103d4620cf6df002b1a733963a9cb82a42df83d