update Cargo.lock

stlankes · stlankes · commit 88a7736083fd · 2019-10-25T10:03:41.000+02:00
diff --git a/Cargo.lock b/Cargo.lock
@@ -4158,6 +4158,7 @@ dependencies = [
  "dlmalloc",
  "fortanix-sgx-abi",
  "hashbrown 0.6.2",
+ "libc",
  "hermit-abi",
  "panic_abort",
  "panic_unwind",
