diff --git a/library/std/src/sys/unix/fs.rs b/library/std/src/sys/unix/fs.rs
index b5cc8038ca4..1f2f9d97bdd 100644
--- a/library/std/src/sys/unix/fs.rs
+++ b/library/std/src/sys/unix/fs.rs
@@ -687,7 +687,11 @@ impl Iterator for ReadDir {
 impl Drop for Dir {
     fn drop(&mut self) {
         let r = unsafe { libc::closedir(self.0) };
-        debug_assert_eq!(r, 0);
+        assert!(
+            r == 0 || crate::io::Error::last_os_error().kind() == crate::io::ErrorKind::Interrupted,
+            "unexpected error during closedir: {:?}",
+            crate::io::Error::last_os_error()
+        );
     }
 }
 
diff --git a/library/std/src/sys/unix/locks/pthread_condvar.rs b/library/std/src/sys/unix/locks/pthread_condvar.rs
index abf27e7db78..4741c0c6736 100644
--- a/library/std/src/sys/unix/locks/pthread_condvar.rs
+++ b/library/std/src/sys/unix/locks/pthread_condvar.rs
@@ -172,7 +172,7 @@ impl Condvar {
         let mut sys_now = libc::timeval { tv_sec: 0, tv_usec: 0 };
         let stable_now = Instant::now();
         let r = libc::gettimeofday(&mut sys_now, ptr::null_mut());
-        debug_assert_eq!(r, 0);
+        assert_eq!(r, 0, "unexpected error: {:?}", crate::io::Error::last_os_error());
 
         let nsec = dur.subsec_nanos() as libc::c_long + (sys_now.tv_usec * 1000) as libc::c_long;
         let extra = (nsec / 1_000_000_000) as libc::time_t;