=> "/opt/pkg/bin/bmake" ["-C", "/data/jenkins/workspace/pkgsrc-upstream-trunk/games/gnuchess-book", "checksum", "BATCH=1", "DEPENDS_TARGET=/nonexistent"]
=> Checksum BLAKE2s OK for book_1.02.pgn.gz
=> Checksum SHA512 OK for book_1.02.pgn.gz