The test generated two random files with the same name, so the first write was lost.
remote: [tester::#NI6] Writing file “/tmp/bar/f 87” with content “mango strawberry.”
remote: [tester::#NI6] Writing file “/tmp/bar/f 15” with content “blueberry raspberry.”
remote: [tester::#NI6] Writing file “/tmp/bar/f 15” with content “apple pear.”
remote: [your-program] $
remote: [tester::#NI6] > cat ‘/tmp/bar/f 87’ ‘/tmp/bar/f 15’ ‘/tmp/bar/f 15’
remote: [your-program] mango strawberry.apple pear.
remote: [tester::#NI6] Expected: “mango strawberry.blueberry raspberry.apple pear.”
remote: [tester::#NI6] Received: “mango strawberry.apple pear.”
remote: [your-program] apple pear.
remote: [your-program] $
remote: [tester::#NI6] Received output does not match expectation.