bundle installエラー

bundle install時に下記エラー出たり出なかったりします。
原因が調べても全くわかりません、、、

本当に困ってるのでどうか知恵をお貸しください、、、

$ bundle install --path vendor/bundle
Fetching gem metadata from https://rubygems.org/./home/kkawahara/.rbenv/versions/2.2.5/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler.rb:345: [BUG] Segmentation fault at 0x00000000000000
ruby 2.2.5p319 (2016-04-26 revision 54774) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0043 p:---- s:0209 e:000208 CFUNC  :load
c:0042 p:0015 s:0205 e:000204 METHOD /home/kkawahara/.rbenv/versions/2.2.5/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler.rb:345
c:0041 p:0031 s:0200 e:000198 BLOCK  /home/kkawahara/.rbenv/versions/2.2.5/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/fetcher/dependency.rb:52 [FINISH]
c:0040 p:---- s:0195 e:000194 IFUNC 
c:0039 p:---- s:0193 e:000192 CFUNC  :each
c:0038 p:---- s:0191 e:000190 CFUNC  :each_slice
c:0037 p:0056 s:0187 e:000186 METHOD /home/kkawahara/.rbenv/versions/2.2.5/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/fetcher/dependency.rb:50
・
・
（長いので割愛）
・
・
7ffdc2981000-7ffdc3180000 rw-p 00000000 00:00 0 
7ffdc318b000-7ffdc318d000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]


[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html

中止