diff --git a/test/package/package_test.ww b/test/package/package_test.ww
index 102f79ea..cfc46b48 100644
--- a/test/package/package_test.ww
+++ b/test/package/package_test.ww
@@ -6011,6 +6011,8 @@ fn hexbytes(value: str) str = {
 			assert(out.stdout.len == 0 && same(out.stderr, foldwant[fi]));
 			assert(readfile(tooltrace).len == 0);
 			assert(!os.exists(output));
+			assert(!os.exists(strings.concat(output, ".new")));
+			assert(!os.exists(strings.concat(output, ".sepwork")));
 			assert(!os.exists(strings.concat(work, "/.wwtool.stamp")));
 			assert(directoryisempty(work));
 			if (i == 0) { foldrefs[fi] = strings.dup(out.stderr); }
@@ -6110,7 +6112,7 @@ fn hexbytes(value: str) str = {
 			repeatav, foldenv,
 			(120i64 * (time.second: i64)): time.duration, &out);
 		expectexit(&out, 1);
-		assert(same(out.stderr, foldexpected));
+		assert(out.stdout.len == 0 && same(out.stderr, foldexpected));
 		assert(readfile(tooltrace).len == 0);
 		rsi = 0;
 		for (rsi < repeatpaths.len) {
@@ -6131,6 +6133,7 @@ fn hexbytes(value: str) str = {
 			repeatav, foldenv,
 			(120i64 * (time.second: i64)): time.duration, &out);
 		expectexit(&out, 0);
+		assert(out.stdout.len == 0 && out.stderr.len == 0);
 		assert(occurrences(readfile(tooltrace), "compile") == 0);
 		assert(occurrences(readfile(tooltrace), "assemble") == 0);
 		assert(occurrences(readfile(tooltrace), "link") == 1);
@@ -7111,7 +7114,7 @@ fn hexbytes(value: str) str = {
 			labels[si]), warmav, env,
 			(120i64 * (time.second: i64)): time.duration, &out);
 		expectexit(&out, 1);
-		assert(same(out.stderr,
+		assert(out.stdout.len == 0 && same(out.stderr,
 			"ww: case-insensitive file name collision: \"File.ww\" and \"file.ww\"\n"));
 		assert(readfile(compilertrace).len == 0);
 		assert(readfile(assemblertrace).len == 0);
@@ -7141,6 +7144,7 @@ fn hexbytes(value: str) str = {
 			labels[si]), warmav, env,
 			(120i64 * (time.second: i64)): time.duration, &out);
 		expectexit(&out, 0);
+		assert(out.stdout.len == 0 && out.stderr.len == 0);
 		assert(readfile(compilertrace).len == 0);
 		assert(readfile(assemblertrace).len == 0);
 		assert(occurrences(readfile(linkertrace), "\n") == 1);