[release-branch.go1.18] go1.18rc1
[release-branch.go1.18] go1.18rc1

Change-Id: I8097771a219c55ceed3e926a238551e59df0816f
Reviewed-on: https://go-review.googlesource.com/c/go/+/386197
Trust: Dmitri Shuralyov <d181b7fea0ec87c86ba5a890ab716db52498e3ba@golang.org>
Run-TryBot: Dmitri Shuralyov <d181b7fea0ec87c86ba5a890ab716db52498e3ba@golang.org>
TryBot-Result: Gopher Robot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Heschi Kreinick <e89ab2b172855aa0ad01c40c4d8a3535a61ac68a@google.com>

cloudflare/go,cloudflare/go,cloudflare/go,cloudflare/go,cloudflare/go,cloudflare/go,cloudflare/go,cloudflare/go