blkid is unreliable in mount_image(), but this blkid call is only here for debugging, so ignore any failures (even if we don't understand them). LP: #2034299.

debian/changelog

@@ -1,3 +1,11 @@
+livecd-rootfs (23.10.31) UNRELEASED; urgency=medium
+
+  * blkid is unreliable in mount_image(), but this blkid call is only here
+    for debugging, so ignore any failures (even if we don't understand
+    them).  LP: #2034299.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Tue, 05 Sep 2023 12:29:24 -0700
+
 livecd-rootfs (23.10.30) mantic; urgency=medium
 
   * Fix unminimize to correctly list packages. (LP: #1996489)

live-build/functions

@@ -78,7 +78,8 @@ mount_image() {
 
     # Add some information to the debug logs
     echo "Mounted disk image ${backing_img} to ${rootfs_dev_mapper}"
-    blkid ${rootfs_dev_mapper}
+    blkid ${rootfs_dev_mapper} \
+    || echo "blkid failed; continuing"
 
     return 0
 }