Skip tests that rely on unlinkat(2) behavior that varies between kernel versions and is unspecified. See and . --- tar-1.28/tests/testsuite 2014-07-27 22:35:27.000000000 +0200 +++ tar-1.28/tests/testsuite 2015-06-16 00:21:16.906380739 +0200 @@ -34680,6 +34680,7 @@ find . )" at_fn_check_prepare_notrace 'an embedded newline' "remfiles08a.at:31" ( $at_check_trace; +exit 77 mkdir gnu (cd gnu TEST_TAR_FORMAT=gnu @@ -34762,6 +34763,7 @@ find . )" at_fn_check_prepare_notrace 'an embedded newline' "remfiles08b.at:36" ( $at_check_trace; +exit 77 mkdir gnu (cd gnu TEST_TAR_FORMAT=gnu @@ -34850,6 +34852,7 @@ find . )" at_fn_check_prepare_notrace 'a `...` command substitution' "remfiles08c.at:31" ( $at_check_trace; +exit 77 mkdir gnu (cd gnu TEST_TAR_FORMAT=gnu r> Wojtek's customized Guix