diff -Naur tests/du/long-from-unreadable.sh tests/du/long-from-unreadable.sh
--- tests/du/long-from-unreadable.sh
+++ tests/du/long-from-unreadable.sh
@@ -29,6 +29,9 @@
 # unnecessarily to using FTS_NOCHDIR mode in this corner case.
 
 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+# Avoid #413621 until #548250 is resolved
+test -n "$SANDBOX_ACTIVE" && skip_ "Gentoo: Test known bad under sandbox (#413621)"
+
 print_ver_ du
 
 proc_file=/proc/self/fd
diff -Naur tests/rm/deep-2.sh tests/rm/deep-2.sh
--- tests/rm/deep-2.sh
+++ tests/rm/deep-2.sh
@@ -17,6 +17,9 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+# Avoid #413621 until #548250 is resolved
+test -n "$SANDBOX_ACTIVE" && skip_ "Gentoo: Test known bad under sandbox (#413621)"
+
 print_ver_ rm
 require_perl_