unignore on x86, add upstream bug ref

test/sys/test_socket.rs

@@ -301,8 +301,9 @@ fn test_scm_credentials() {
 /// Ensure that we can send `SCM_CREDENTIALS` and `SCM_RIGHTS` with a single
 /// `sendmsg` call.
 #[cfg(any(target_os = "android", target_os = "linux"))]
-// qemu's handling of multiple cmsgs is bugged, ignore tests on non-x86-64
-#[cfg_attr(not(target_arch = "x86_64"), ignore)]
+// qemu's handling of multiple cmsgs is bugged, ignore tests on non-x86
+// see https://bugs.launchpad.net/qemu/+bug/1781280
+#[cfg_attr(not(any(target_arch = "x86_64", target_arch = "x86")), ignore)]
 #[test]
 fn test_scm_credentials_and_rights() {
     use nix::sys::socket::CmsgSpace;
@@ -314,8 +315,9 @@ fn test_scm_credentials_and_rights() {
 /// Ensure that passing a `CmsgSpace` with too much space for the received
 /// messages still works.
 #[cfg(any(target_os = "android", target_os = "linux"))]
-// qemu's handling of multiple cmsgs is bugged, ignore tests on non-x86-64
-#[cfg_attr(not(target_arch = "x86_64"), ignore)]
+// qemu's handling of multiple cmsgs is bugged, ignore tests on non-x86
+// see https://bugs.launchpad.net/qemu/+bug/1781280
+#[cfg_attr(not(any(target_arch = "x86_64", target_arch = "x86")), ignore)]
 #[test]
 fn test_too_large_cmsgspace() {
     use nix::sys::socket::CmsgSpace;