rustfmt not working on 0.27.0

When I run `bazel run @rules_rust//:rustfmt`, I'm greeted with the following error. Building rust targets, and even generating rust-project.json is all working fine so I think the issue is with rules_rust.

```
INFO: Invocation ID: 52d96c64-af30-4467-92a4-269c4b357569
ERROR: /home/adamsnaider/.cache/bazel/_bazel_adamsnaider/530c9f87a009472f6e6354126a0e8581/external/rules_rust/rust/toolchain/BUILD.bazel:40:26: While resolving toolchains for target @rules_rust//rust/toolchain:current_rustfmt_toolchain: No matching toolchains found for types @rules_rust//rust/rustfmt:toolchain_type.
To debug, rerun with --toolchain_resolution_debug='@rules_rust//rust/rustfmt:toolchain_type'
If platforms or toolchains are a new concept for you, we'd encourage reading https://bazel.build/concepts/platforms-intro.
ERROR: Analysis of target '@rules_rust//:rustfmt' failed; build aborted:
INFO: Elapsed time: 1.872s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (0 packages loaded, 0 targets configured)
ERROR: Build failed. Not running target
```

This was working before upgrading to 0.27.0.

I'm currently getting around it by manually referring to the `@rust__x86_64-unknown-linux-gnu__stable_tools//:rustfmt` and wrapping it on a shell script that runs it on all rust files in the project.