[Toybox] sort tests broken?

[enh]

FAIL: sort -c
echo -ne 'a\nb\na\nc' | "/usr/bin/sort" -c |& grep -o [0-9]*
--- expected 2022-08-22 08:56:24.000000000 -0700
+++ actual 2022-08-22 08:56:24.000000000 -0700
@@ -1 +0,0 @@
-3
make: *** [test_sort] Error 1
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