diff --git a/third_party/rust_crates/BUILD.gn b/third_party/rust_crates/BUILD.gn
index 180315d25d91..604d952e85ea 100644
--- a/third_party/rust_crates/BUILD.gn
+++ b/third_party/rust_crates/BUILD.gn
@@ -1528,7 +1528,7 @@ rust_library("async-fs-v1_6_0") {
 
 rust_library("async-io-v1_12_0") {
   crate_name = "async_io"
-  crate_root = "//third_party/rust_crates/vendor/async-io-1.12.0/src/lib.rs"
+  crate_root = "//third_party/rust_crates/forks/async-io/src/lib.rs"
   output_name = "async_io-8cea39e881d5ae1e"
   configs -= [ "//build/config/rust:2018_idioms" ]
 
diff --git a/third_party/rust_crates/Cargo.lock b/third_party/rust_crates/Cargo.lock
index 283a25526afa..34c022d8a0ec 100644
--- a/third_party/rust_crates/Cargo.lock
+++ b/third_party/rust_crates/Cargo.lock
@@ -182,8 +182,6 @@ dependencies = [
 [[package]]
 name = "async-io"
 version = "1.12.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c374dda1ed3e7d8f0d9ba58715f924862c63eae6849c92d3a18e7fbde9e2794"
 dependencies = [
  "async-lock",
  "autocfg 1.1.0",
diff --git a/third_party/rust_crates/Cargo.toml b/third_party/rust_crates/Cargo.toml
index e47e496f3e32..3e60d7d40e28 100644
--- a/third_party/rust_crates/Cargo.toml
+++ b/third_party/rust_crates/Cargo.toml
@@ -341,6 +341,7 @@ windows = { path = "empty/windows" }
 windows-sys = { path = "empty/windows-sys" }
 
 ### Forks: vendored crates whose code doesn't match the upstream version
+async-io = { path = "forks/async-io" }
 fatfs = { path = "forks/fatfs" }
 fuse3 = { path = "forks/fuse3" }
 hound = { path = "forks/hound" }
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/.cargo-checksum.json b/third_party/rust_crates/forks/async-io/.cargo-checksum.json
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/.cargo-checksum.json
rename to third_party/rust_crates/forks/async-io/.cargo-checksum.json
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/CHANGELOG.md b/third_party/rust_crates/forks/async-io/CHANGELOG.md
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/CHANGELOG.md
rename to third_party/rust_crates/forks/async-io/CHANGELOG.md
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/Cargo.lock b/third_party/rust_crates/forks/async-io/Cargo.lock
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/Cargo.lock
rename to third_party/rust_crates/forks/async-io/Cargo.lock
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/Cargo.toml b/third_party/rust_crates/forks/async-io/Cargo.toml
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/Cargo.toml
rename to third_party/rust_crates/forks/async-io/Cargo.toml
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/LICENSE-APACHE b/third_party/rust_crates/forks/async-io/LICENSE-APACHE
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/LICENSE-APACHE
rename to third_party/rust_crates/forks/async-io/LICENSE-APACHE
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/LICENSE-MIT b/third_party/rust_crates/forks/async-io/LICENSE-MIT
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/LICENSE-MIT
rename to third_party/rust_crates/forks/async-io/LICENSE-MIT
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/OWNERS b/third_party/rust_crates/forks/async-io/OWNERS
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/OWNERS
rename to third_party/rust_crates/forks/async-io/OWNERS
diff --git a/third_party/rust_crates/forks/async-io/README.fuchsia b/third_party/rust_crates/forks/async-io/README.fuchsia
new file mode 100644
index 000000000000..9506808e6c66
--- /dev/null
+++ b/third_party/rust_crates/forks/async-io/README.fuchsia
@@ -0,0 +1,17 @@
+Name: async-io
+License File: LICENSE-APACHE
+Description:
+
+async-io is used only on the host side to provide async usage of *nix IO primitives.
+
+This is mainline, but will soon incorporate the patch from
+https://github.com/smol-rs/async-io/pull/79/commits/71cd97d34ed8c652074b61ed4093b475e2fb4fdd
+.
+
+This will be async-io mainline (~1.12.0) with a patch.
+
+There is nothing else special about this release the fork is cut from mainline.
+
+This fork can be removed if the pull request is rolled into mainline and a
+release is cut, but upstream is in a semi-abandoned state so this may not happen
+soon.
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/README.md b/third_party/rust_crates/forks/async-io/README.md
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/README.md
rename to third_party/rust_crates/forks/async-io/README.md
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/benches/io.rs b/third_party/rust_crates/forks/async-io/benches/io.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/benches/io.rs
rename to third_party/rust_crates/forks/async-io/benches/io.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/build.rs b/third_party/rust_crates/forks/async-io/build.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/build.rs
rename to third_party/rust_crates/forks/async-io/build.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/examples/linux-inotify.rs b/third_party/rust_crates/forks/async-io/examples/linux-inotify.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/examples/linux-inotify.rs
rename to third_party/rust_crates/forks/async-io/examples/linux-inotify.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/examples/linux-timerfd.rs b/third_party/rust_crates/forks/async-io/examples/linux-timerfd.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/examples/linux-timerfd.rs
rename to third_party/rust_crates/forks/async-io/examples/linux-timerfd.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/examples/unix-signal.rs b/third_party/rust_crates/forks/async-io/examples/unix-signal.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/examples/unix-signal.rs
rename to third_party/rust_crates/forks/async-io/examples/unix-signal.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/examples/windows-uds.rs b/third_party/rust_crates/forks/async-io/examples/windows-uds.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/examples/windows-uds.rs
rename to third_party/rust_crates/forks/async-io/examples/windows-uds.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/src/driver.rs b/third_party/rust_crates/forks/async-io/src/driver.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/src/driver.rs
rename to third_party/rust_crates/forks/async-io/src/driver.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/src/lib.rs b/third_party/rust_crates/forks/async-io/src/lib.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/src/lib.rs
rename to third_party/rust_crates/forks/async-io/src/lib.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/src/reactor.rs b/third_party/rust_crates/forks/async-io/src/reactor.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/src/reactor.rs
rename to third_party/rust_crates/forks/async-io/src/reactor.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/tests/async.rs b/third_party/rust_crates/forks/async-io/tests/async.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/tests/async.rs
rename to third_party/rust_crates/forks/async-io/tests/async.rs
diff --git a/third_party/rust_crates/vendor/async-io-1.12.0/tests/timer.rs b/third_party/rust_crates/forks/async-io/tests/timer.rs
similarity index 100%
rename from third_party/rust_crates/vendor/async-io-1.12.0/tests/timer.rs
rename to third_party/rust_crates/forks/async-io/tests/timer.rs