roll: third_party/pigweed: roll: rust

aarch64-apple-darwin
From git_revision:c6f81a452e291dd4ff5bcbc6ecb9cd6f2271f164
To git_revision:9649706eada1b2c68cf6504356efb058f68ad739

aarch64-unknown-linux-gnu
From git_revision:c6f81a452e291dd4ff5bcbc6ecb9cd6f2271f164
To git_revision:9649706eada1b2c68cf6504356efb058f68ad739

host
From git_revision:c6f81a452e291dd4ff5bcbc6ecb9cd6f2271f164
To git_revision:9649706eada1b2c68cf6504356efb058f68ad739

thumbv7m-none-eabi
From git_revision:c6f81a452e291dd4ff5bcbc6ecb9cd6f2271f164
To git_revision:9649706eada1b2c68cf6504356efb058f68ad739

x86_64-apple-darwin
From git_revision:c6f81a452e291dd4ff5bcbc6ecb9cd6f2271f164
To git_revision:9649706eada1b2c68cf6504356efb058f68ad739

x86_64-unknown-linux-gnu
From git_revision:c6f81a452e291dd4ff5bcbc6ecb9cd6f2271f164
To git_revision:9649706eada1b2c68cf6504356efb058f68ad739

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/233059
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 60a6b4dfb9e60e0..a271a3881ffa966
Roller-URL: https://ci.chromium.org/b/8738068190839794257
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ic03ef935689d4600b2d24de0ff1e05c34b8f7ea3
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/233232
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 60a6b4d..a271a38 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 60a6b4dfb9e60e052cf58ab9ab5e20cdbb5ab52a
+Subproject commit a271a3881ffa9660d00f076585b01af3438e359d