Fix some perl-in-space problems #382

Job	Run time
perl (1, 5.39)	6m 21s
perl (1, ALIEN_BUILD_LIVE_TEST=1, 5.38-alpine3.16)	7m 6s
perl (1, ALIEN_BUILD_LIVE_TEST=1, 5.38-bionic)	6m 1s
perl (1, ALIEN_BUILD_LIVE_TEST=1, 5.38-fedora36)	6m 47s
perl (0, ALIEN_BUILD_LIVE_TEST=0, 5.38-bullseye)	5m 4s
perl (1, ALIEN_BUILD_LIVE_TEST=1, 5.38-bullseye)	2m 23s
perl (1, ALIEN_DOWNLOAD_RULE=warn, 5.38)	1m 38s
perl (1, ALIEN_DOWNLOAD_RULE=digest, 5.38)	4m 8s
perl (1, ALIEN_DOWNLOAD_RULE=encrypt, 5.38)	4m 14s
perl (1, ALIEN_DOWNLOAD_RULE=digest_or_encrypt, 5.38)	3m 59s
perl (1, ALIEN_DOWNLOAD_RULE=digest_and_encrypt, 5.38)	4m 8s
perl (1, 5.38)	6m 11s
perl (1, 5.36)	7m 18s
perl (1, 5.34)	6m 14s
perl (1, 5.32)	6m 15s
perl (1, 5.30)	6m 12s
perl (1, 5.28)	6m 29s
perl (1, 5.26)	6m 28s
perl (1, 5.24)	6m 30s
perl (1, 5.22)	6m 44s
perl (1, 5.20)	6m 30s
perl (0, 5.18)	5m 22s
perl (0, 5.16)	5m 22s
perl (0, 5.14)	5m 14s
perl (0, 5.12)	5m 20s
perl (0, 5.10.1)	3m 18s
perl (0, 5.10.0)	3m 25s
perl (0, 5.8.8)	3m 31s
perl (0, 5.8.4)	3m 29s
	2h 31m 41s

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