(Was attempting to upgrade as getting gems/ffi-yajl-2.6.0/lib/ffi_yajl/encoder.rb:42: warning: undefining the allocator of T_DATA class FFI_Yajl::Ext::Encoder::YajlGen, and noticed there was a ffi-yajl 3.0.0 to try (unknown if issue is resolved), but ohai is ~> 2.6.0.
https://rubygems.org/gems/ohai is showing ohai 18.1.3 as the latest release, but I see newer releases on https://github.com/chef/ohai/tags
(Was attempting to upgrade as getting gems/ffi-yajl-2.6.0/lib/ffi_yajl/encoder.rb:42: warning: undefining the allocator of T_DATA class FFI_Yajl::Ext::Encoder::YajlGen, and noticed there was a ffi-yajl 3.0.0 to try (unknown if issue is resolved), but ohai is ~> 2.6.0.