Since I updated Ruby to 2.3.6, the standard library json is missing:
ruby -e 'require "json"'
/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot
load such file -- json (LoadError)
from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in
`require'
from -e:1:in `<main>'The other standard libs which I tried, are present, for example: ruby -e 'require "yaml"; require "set"' (no error here). Ronald
cygcheck.out
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