Auto merge of #1054 - RalfJung:win-num-cpus, r=RalfJung

test-cargo-miri: cargo update, re-enable windows num_cpus test

Author: bors

test-cargo-miri/Cargo.lock

@@ -39,6 +39,5 @@ fn entropy_rng() {
 
 #[test]
 fn num_cpus() {
-    #[cfg(not(windows))] // FIXME: enable on Windows again once https://github.com/seanmonstar/num_cpus/pull/90 gets released.
     assert_eq!(num_cpus::get(), 1);
 }