I'm still getting a reading error

[KaiserKarel]

    writer_test.go:270: maxVal 95684; maxBuffer 20267182; seed 1540218988936092485
panic: runtime error: index out of range [recovered]
	panic: runtime error: index out of range
goroutine 11 [running]:
testing.tRunner.func1(0xc0000be100)
	/home/travis/.gimme/versions/go1.11.linux.amd64/src/testing/testing.go:792 +0x6a7
panic(0x70f0a0, 0xb19e10)
	/home/travis/.gimme/versions/go1.11.linux.amd64/src/runtime/panic.go:513 +0x1b9
github.com/carapace/cellar.TestFuzz(0xc0000be100)
	/home/travis/gopath/src/github.com/carapace/cellar/writer_test.go:297 +0xe11
testing.tRunner(0xc0000be100, 0x74ff20)
	/home/travis/.gimme/versions/go1.11.linux.amd64/src/testing/testing.go:827 +0x163
created by testing.(*T).Run
	/home/travis/.gimme/versions/go1.11.linux.amd64/src/testing/testing.go:878 +0x651
FAIL	github.com/carapace/cellar	1.772s

when trying to merge with my branch. Any clue why this is happening?

Originally posted by @KaiserKarel in #5 (comment)