[DRE-maint] Bug#826014: feed2imap: cache.rb:84:in `load': incompatible marshal file format (can't be read) (TypeError)

[Matteo Calorio]

Package: feed2imap
Version: 1.2.5-1
Severity: grave
Justification: renders package unusable

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

Hello,

since 22nd of May I get the following error with feed2imap:

/usr/lib/ruby/vendor_ruby/feed2imap/cache.rb:84:in `load': incompatible marshal file format (can't be read) (TypeError)
        format version 4.8 required; 34.1 given
        from /usr/lib/ruby/vendor_ruby/feed2imap/cache.rb:84:in `rescue in load'
        from /usr/lib/ruby/vendor_ruby/feed2imap/cache.rb:81:in `load'
        from /usr/lib/ruby/vendor_ruby/feed2imap/feed2imap.rb:87:in `block in initialize'
        from /usr/lib/ruby/vendor_ruby/feed2imap/feed2imap.rb:86:in `open'
        from /usr/lib/ruby/vendor_ruby/feed2imap/feed2imap.rb:86:in `initialize'
        from /usr/bin/feed2imap:48:in `new'
        from /usr/bin/feed2imap:48:in `<main>'

possibly after some updates.

Thanks,
  Matteo

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-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.5.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages feed2imap depends on:
ii  ruby                          1:2.3.0+4
ii  ruby-feedparser               0.9.4-1
ii  ruby-rubymail                 1.1.0-2
ii  ruby1.9.1 [ruby-interpreter]  1.9.3.484-2
ii  ruby2.0 [ruby-interpreter]    2.0.0.484+really457-3
ii  ruby2.1 [ruby-interpreter]    2.1.5-4
ii  ruby2.2 [ruby-interpreter]    2.2.4-1
ii  ruby2.3 [ruby-interpreter]    2.3.1-1

feed2imap recommends no packages.

Versions of packages feed2imap suggests:
ii  dovecot-imapd [imap-server]  1:2.2.24-1
ii  kmail [imap-client]          4:4.14.10-2
ii  mutt [imap-client]           1.6.0-1

-- no debconf information