std::fs::create_dir_all fails on path ending with . if it does not already exist

thread 'main' (14) panicked at src/main.rs:4:62:
called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/2e2b193f8ada105f27608b7be81c293e0d7292cb/library/std/src/panicking.rs:676:5
   1: core::panicking::panic_fmt
             at /rustc/2e2b193f8ada105f27608b7be81c293e0d7292cb/library/core/src/panicking.rs:80:14
   2: core::result::unwrap_failed
             at /rustc/2e2b193f8ada105f27608b7be81c293e0d7292cb/library/core/src/result.rs:1870:5
   3: <core::result::Result<(), core::io::error::Error>>::unwrap
             at ./.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/result.rs:1232:23
   4: playground::main
             at ./src/main.rs:4:62
   5: <fn() as core::ops::function::FnOnce<()>>::call_once
             at ./.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.