error logging is not user friendly

See #75, release log:

• 0015d67 by @yegor256: #75 rubocop 0.48.1
• d5b41bc by @yegor256: #75 xcop
• c0c4a64 by @yegor256: #75 typo
• 3030f71 by @yegor256: #75 quiet
• a81f38d by @yegor256: #75 polish
• 641542d by @yegor256: #75 better error reporting in ...
• f71009d by @yegor256: #75 less logs
• 879f602 by @yegor256: #75 less errors
• b6267d8 by @yegor256: #75 more colors
• 444e954 by @yegor256: #75 rainbow
• 72310b2 by @yegor256: #75 help page improved
• eafd7e6 by @yegor256: #75 fixes
• 8bcbec3 by @yegor256: #75 typo
• 6adbe6c by @yegor256: #75 cucumber progress
• 52b1e24 by @yegor256: #75 error logging
• d918c20 by @yegor256: zerocracy badge
• 178c3c6 by @yegor256: #73 max-duplicates explained

Released by Rultor 1.66.3, see build log