Update nitrokey crate to 0.4.0

This change finally updates the version of the nitrokey crate that we
consume to 0.4.0. Along with that we update rand_core, one of its
dependencies, to 0.5.1. Further more we add cfg-if in version 0.1.10 and
getrandom in version 0.1.13, both of which are now new (non-development)
dependencies.

Import subrepo nitrokey/:nitrokey at e81057037e9b4f370b64c0a030a725bc6bdfb870
Import subrepo cfg-if/:cfg-if at 4484a6faf816ff8058088ad857b0c6bb2f4b02b2
Import subrepo getrandom/:getrandom at d661aa7e1b8cc80b47dabe3d2135b3b47d2858af
Import subrepo rand/:rand at d877ed528248b52d947e0484364a4e1ae59ca502

1 files changed, 0 insertions, 39 deletions

diff --git a/rand/rand_os/src/cloudabi.rs b/rand/rand_os/src/cloudabi.rs
deleted file mode 100644
index 8b96a2b..0000000
--- a/rand/rand_os/src/cloudabi.rs
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for CloudABI
-
-extern crate cloudabi;
-
-use std::io;
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-#[derive(Clone, Debug)]
-pub struct OsRng;
-
-impl OsRngImpl for OsRng {
-    fn new() -> Result<OsRng, Error> { Ok(OsRng) }
-
-    fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
-        let errno = unsafe { cloudabi::random_get(dest) };
-        if errno == cloudabi::errno::SUCCESS {
-            Ok(())
-        } else {
-            // Cloudlibc provides its own `strerror` implementation so we
-            // can use `from_raw_os_error` here.
-            Err(Error::with_cause(
-                ErrorKind::Unavailable,
-                "random_get() system call failed",
-                io::Error::from_raw_os_error(errno as i32),
-            ))
-        }
-    }
-
-    fn method_str(&self) -> &'static str { "cloudabi::random_get" }
-}