incompatible character encodings: UTF-8 and ASCII-8BIT (Encoding::CompatibilityError)

$ pod install --no-repo-update

/Library/Ruby/Gems/2.0.0/gems/cocoapods-0.35.0/lib/cocoapods/user_interface/error_report.rb:13:in `report': incompatible character encodings: UTF-8 and ASCII-8BIT (Encoding::CompatibilityError)

from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.35.0/lib/cocoapods/command.rb:58:in `report_error'

from /Library/Ruby/Gems/2.0.0/gems/claide-0.7.0/lib/claide/command.rb:300:in `handle_exception'

from /Library/Ruby/Gems/2.0.0/gems/claide-0.7.0/lib/claide/command.rb:274:in `rescue in run'

from /Library/Ruby/Gems/2.0.0/gems/claide-0.7.0/lib/claide/command.rb:264:in `run'

from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.35.0/lib/cocoapods/command.rb:45:in `run'

from /Library/Ruby/Gems/2.0.0/gems/cocoapods-0.35.0/bin/pod:43:in `<top (required)>'

from /usr/bin/pod:23:in `load'

from /usr/bin/pod:23:in `<main>'

搜了一下，發現，原因是因爲從網頁拷貝，手打一遍就好了。