Skip 'test-out-of-memory', which is unreliable in Guile 2.2.4:

  https://bugs.gnu.org/34155

--- a/test-suite/standalone/Makefile.in	1969-12-31 19:00:00.000000000 -0500
+++ b/test-suite/standalone/Makefile.in	2019-05-27 16:44:32.302355990 -0400
@@ -103,7 +103,7 @@
 	test-scm-c-bind-keyword-arguments$(EXEEXT) \
 	test-srfi-4$(EXEEXT) $(am__append_6) $(am__EXEEXT_1) \
 	test-smob-mark$(EXEEXT) test-smob-mark-race$(EXEEXT) \
-	test-stack-overflow test-out-of-memory
+	test-stack-overflow
 check_PROGRAMS = test-num2integral$(EXEEXT) test-round$(EXEEXT) \
 	test-foreign-object-c$(EXEEXT) test-list$(EXEEXT) \
 	test-unwind$(EXEEXT) test-conversion$(EXEEXT) \
@@ -1938,8 +1938,7 @@
 	test-command-line-encoding test-command-line-encoding2 \
 	test-language test-guild-compile $(am__append_3) \
 	test-foreign-object-scm test-fast-slot-ref test-mb-regexp \
-	test-use-srfi $(am__append_5) test-stack-overflow \
-	test-out-of-memory
+	test-use-srfi $(am__append_5) test-stack-overflow
 BUILT_SOURCES = $(am__append_2)
 EXTRA_DIST = test-import-order-a.scm test-import-order-b.scm \
 	test-import-order-c.scm test-import-order-d.scm \
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