libc 0.2.190 drops NOTE_PCTRLMASK on FreeBSD, still used by nix 0.26.4
--- src/Cargo.lock.orig
+++ src/Cargo.lock
@@ -2499,9 +2499,9 @@
 
 [[package]]
 name = "libc"
-version = "0.2.190"
+version = "0.2.189"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce5d3ddc6d3fa000eb1536d85e147bfe31aacaba692ed6a876f95cb7c855be78"
+checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2"
 
 [[package]]
 name = "libloading"