[DRE-maint] Bug#990443: origami-pdf: pdfwalker crashes on start: /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require': superclass mismatch for class Socket (TypeError)

[Axel Beckert]

Package: origami-pdf
Version: 2.0.0-1
Severity: serious

pdfwalker crashes on start, even with just no parameter or just
"--help":

$ pdfwalker
Ignoring ffi-1.9.10 because its extensions are not built. Try: gem pristine ffi --version 1.9.10
Ignoring json-1.8.3 because its extensions are not built. Try: gem pristine json --version 1.8.3
Traceback (most recent call last):
        26: from /usr/bin/pdfwalker:4:in `<main>'
        25: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        24: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        23: from /usr/share/origami/gui/walker.rb:31:in `<top (required)>'
        22: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        21: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        20: from /usr/lib/ruby/vendor_ruby/origami.rb:42:in `<top (required)>'
        19: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        18: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        17: from /usr/lib/ruby/vendor_ruby/origami/pdf.rb:46:in `<top (required)>'
        16: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        15: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        14: from /usr/lib/ruby/vendor_ruby/origami/signature.rb:22:in `<top (required)>'
        13: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        12: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
        11: from /usr/lib/ruby/2.7.0/openssl.rb:21:in `<top (required)>'
        10: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
         9: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
         8: from /usr/lib/ruby/2.7.0/openssl/ssl.rb:15:in `<top (required)>'
         7: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
         6: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
         5: from /usr/lib/ruby/2.7.0/ipaddr.rb:19:in `<top (required)>'
         4: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
         3: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
         2: from /usr/lib/ruby/2.7.0/socket.rb:3:in `<top (required)>'
         1: from /usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require'
/usr/lib/ruby/vendor_ruby/rubygems/core_ext/kernel_require.rb:85:in `require': superclass mismatch for class Socket (TypeError)

-- System Information:
Debian Release: 11.0
  APT prefers unstable
  APT policy: (990, 'unstable'), (980, 'unstable-debug'), (600, 'testing'), (111, 'buildd-unstable'), (111, 'buildd-experimental'), (110, 'experimental'), (105, 'experimental-debug')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-7-amd64 (SMP w/2 CPU threads)
Kernel taint flags: TAINT_CPU_OUT_OF_SPEC
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages origami-pdf depends on:
ii  ruby          1:2.7+2
ii  ruby-origami  2.0.0-1

Versions of packages origami-pdf recommends:
ii  ruby-gtk2  3.4.3-1+b1

origami-pdf suggests no packages.

-- no debconf information