switch to the latest rust toolchain

stlankes · stlankes · commit 01478b9ab2e9 · 2021-11-07T23:58:20.000+01:00
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
@@ -1,5 +1,5 @@
 [toolchain]
-channel = "nightly-2021-02-11"
+channel = "nightly-2021-10-20"
 components = [
     "clippy",
     "rustfmt",
