Update crate threadpools

Author: bors

th/re/threadpools

@@ -1,3 +1,4 @@
 {"name":"threadpools","vers":"1.0.0","deps":[],"cksum":"7c24fbe21dbf03360fd8a1df55bd533c5fb7be0b010e891c2f589c495d15909d","features":{},"yanked":false}
 {"name":"threadpools","vers":"2.0.0","deps":[],"cksum":"35c4dc02b9f50fe2348cd53af7f30dd855cc8d04f4a266d438e6ab3664ac619a","features":{},"yanked":false}
 {"name":"threadpools","vers":"3.0.0","deps":[],"cksum":"cc13ad7360d1c95b0409259d57a1f5e2b47abe945ccd82274a02882fc3afe255","features":{},"yanked":false}
+{"name":"threadpools","vers":"3.0.1","deps":[],"cksum":"12dd491ad812a1c73011e6c056203b0c7697c56a69e9e3cda24c30a83cf94f2e","features":{},"yanked":false}