Youcompleteme: ycmd server SHUT DOWN Error[66]

[tgzhou98]

Issue Prelude

Please complete these steps and check these boxes (by putting an x inside
the brackets) _before_ filing your issue:

• [x] I have read and understood YCM's CONTRIBUTING document.
• [x] I have read and understood YCM's CODE_OF_CONDUCT document.
• [x] I have read and understood YCM's README, especially the
  Frequently Asked Questions section.
• [x] I have searched YCM's issue tracker to find issues similar to the one I'm
  about to report and couldn't find an answer to my problem. (Example Google
  search.)
• [x] If filing a bug report, I have included the output of vim --version.
• [x] If filing a bug report, I have included the output of :YcmDebugInfo.
• [x] If filing a bug report, I have attached the contents of the logfiles using
  the :YcmToggleLogs command.
• [x] If filing a bug report, I have included which OS (including specific OS
  version) I am using.
• [x] If filing a bug report, I have included a minimal test case that reproduces
  my issue, including what I expected to happen and what actually happened.
• [x] If filing a installation failure report, I have included the entire output
  of install.py (or cmake/make/ninja) including its invocation
• [x] I understand this is an open-source project staffed by volunteers and
  that any help I receive is a selfless, heartfelt _gift_ of their free time. I
  know I am not entitled to anything and will be polite and courteous.
• [x] I understand my issue may be closed if it becomes obvious I didn't
  actually perform all of these steps.

Thank you for adhering to this process! It ensures your issue is resolved
quickly and that neither your nor our time is needlessly wasted.

Issue Details

When I open the Vim or macvim,I get the error:
The ycmd server SHUT DOWN (restart with ':YcmRestartServer'). Unexpected exit code -6. Type ':YcmToggleLogs ycmd_61335_stderr_VDghPq.log' to check the logs.

• What did you do?
  just open the vim or macvim,and ycm shut down

Include description of a minimal test case, including any actual code required
to reproduce the issue.
any files

• What did you expect to happen?
  open the server,and work as a completer

• What actually happened?
  shut down
  and YcmRestartServer not work

Diagnostic data

Output of vim --version

VIM - Vi IMproved 8.0 (2016 Sep 12, compiled Nov  3 2017 02:46:51)
macOS version
Included patches: 1-1250
Compiled by Homebrew
Huge version without GUI.  Features included (+) or not (-):
+acl             +file_in_path    +mouse_sgr       +tag_old_static
+arabic          +find_in_path    -mouse_sysmouse  -tag_any_white
+autocmd         +float           +mouse_urxvt     -tcl
-balloon_eval    +folding         +mouse_xterm     +termguicolors
-browse          -footer          +multi_byte      +terminal
++builtin_terms  +fork()          +multi_lang      +terminfo
+byte_offset     -gettext         -mzscheme        +termresponse
+channel         -hangul_input    +netbeans_intg   +textobjects
+cindent         +iconv           +num64           +timers
-clientserver    +insert_expand   +packages        +title
+clipboard       +job             +path_extra      -toolbar
+cmdline_compl   +jumplist        +perl            +user_commands
+cmdline_hist    +keymap          +persistent_undo +vertsplit
+cmdline_info    +lambda          +postscript      +virtualedit
+comments        +langmap         +printer         +visual
+conceal         +libcall         +profile         +visualextra
+cryptv          +linebreak       +python          +viminfo
+cscope          +lispindent      -python3         +vreplace
+cursorbind      +listcmds        +quickfix        +wildignore
+cursorshape     +localmap        +reltime         +wildmenu
+dialog_con      -lua             +rightleft       +windows
+diff            +menu            +ruby            +writebackup
+digraphs        +mksession       +scrollbind      -X11
-dnd             +modify_fname    +signs           -xfontset
-ebcdic          +mouse           +smartindent     -xim
+emacs_tags      -mouseshape      +startuptime     -xpm
+eval            +mouse_dec       +statusline      -xsmp
+ex_extra        -mouse_gpm       -sun_workshop    -xterm_clipboard
+extra_search    -mouse_jsbterm   +syntax          -xterm_save
+farsi           +mouse_netterm   +tag_binary
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
 2nd user vimrc file: "~/.vim/vimrc"
      user exrc file: "$HOME/.exrc"
       defaults file: "$VIMRUNTIME/defaults.vim"
  fall-back for $VIM: "/usr/local/share/vim"
Compilation: clang -c -I. -Iproto -DHAVE_CONFIG_H   -DMACOS_X -DMACOS_X_DARWIN  -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
Linking: clang   -L. -fstack-protector -L/usr/local/lib -L/usr/local/opt/libyaml/lib -L/usr/local/opt/openssl/lib -L/usr/local/opt/readline/lib  -L/usr/local/lib -o vim        -lncurses -liconv -framework AppKit   -mmacosx-version-min=10.11 -fstack-protector-strong -L/usr/local/lib  -L/usr/local/Cellar/perl/5.26.1/lib/perl5/5.26.1/darwin-thread-multi-2level/CORE -lperl -lm -lutil -lc -F/usr/local/opt/python/Frameworks -framework Python   -lruby.2.4.2 -lobjc

Output of YcmDebugInfo

Printing YouCompleteMe debug information...
-- Client logfile: /var/folders/6n/0qbj_8gj6gz8psmtnypkz33c0000gn/T/ycm_qde71J.log
-- Server errored, no debug info from server
-- Server running at: http://127.0.0.1:61335
-- Server process ID: 24065
-- Server logfiles:
--   /var/folders/6n/0qbj_8gj6gz8psmtnypkz33c0000gn/T/ycmd_61335_stdout_9Nvgnn.log
--   /var/folders/6n/0qbj_8gj6gz8psmtnypkz33c0000gn/T/ycmd_61335_stderr_VDghPq.log

Contents of YCM, ycmd and completion engine logfiles

three files
ycm_HJXd5U.log ycmd_61506_stderr__3b1sV.log ycmd_61506_stdout_89rUA_.log

ycm_HJXd5U.log

2017-11-10 21:31:26,345 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 214, in HandleServerException
    yield
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/youcompleteme.py", line 237, in CheckIfServerIsReady
    'ready' )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 68, in GetDataFromHandler
    timeout ) )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 180, in JsonFromFuture
    response = future.result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 356, in __get_result
    raise self._exception
ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=61506): Max retries exceeded with url: /ready (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x10bff5dd0>: Failed to establish a new connection: [Errno 61] Connection refused',))
2017-11-10 21:31:26,456 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 214, in HandleServerException
    yield
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/youcompleteme.py", line 237, in CheckIfServerIsReady
    'ready' )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 68, in GetDataFromHandler
    timeout ) )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 180, in JsonFromFuture
    response = future.result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 356, in __get_result
    raise self._exception
ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=61506): Max retries exceeded with url: /ready (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x10bff5810>: Failed to establish a new connection: [Errno 61] Connection refused',))
2017-11-10 21:31:26,559 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 214, in HandleServerException
    yield
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/youcompleteme.py", line 237, in CheckIfServerIsReady
    'ready' )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 68, in GetDataFromHandler
    timeout ) )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 180, in JsonFromFuture
    response = future.result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 356, in __get_result
    raise self._exception
ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=61506): Max retries exceeded with url: /ready (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x10c03b450>: Failed to establish a new connection: [Errno 61] Connection refused',))
2017-11-10 21:31:26,659 - ERROR - The ycmd server SHUT DOWN (restart with ':YcmRestartServer'). Unexpected exit code -6. Type ':YcmToggleLogs ycmd_61506_stderr__3b1sV.log' to check the logs.
2017-11-10 21:31:45,701 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 214, in HandleServerException
    yield
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/debug_info_request.py", line 41, in Start
    self._response = self.PostDataToHandler( request_data, 'debug_info' )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 78, in PostDataToHandler
    timeout ) )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 180, in JsonFromFuture
    response = future.result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 356, in __get_result
    raise self._exception
ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=61506): Max retries exceeded with url: /debug_info (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x10bff5dd0>: Failed to establish a new connection: [Errno 61] Connection refused',))
2017-11-10 21:31:47,166 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 214, in HandleServerException
    yield
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/debug_info_request.py", line 41, in Start
    self._response = self.PostDataToHandler( request_data, 'debug_info' )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 78, in PostDataToHandler
    timeout ) )
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 180, in JsonFromFuture
    response = future.result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 356, in __get_result
    raise self._exception
ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=61506): Max retries exceeded with url: /debug_info (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x10c03bbd0>: Failed to establish a new connection: [Errno 61] Connection refused',))

ycmd_61506_stderr__3b1sV.log ycmd_61506_stdout_89rUA_.logare empty

OS version, distribution, etc.

OS X EI Captian
Version 10.11.6

Output of build/install commands

Searching Python 3.6 libraries...
Found Python library: /Users/zhoutiangang/anaconda3/lib/libpython3.6m.dylib
Found Python headers folder: /Users/zhoutiangang/anaconda3/include/python3.6m
-- The C compiler identification is AppleClang 8.0.0.8000042
-- The CXX compiler identification is AppleClang 8.0.0.8000042
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PythonLibs: /Users/zhoutiangang/anaconda3/lib/libpython3.6m.dylib (found suitable version "3.6.3", minimum required is "3.3")
NOT using libclang, no semantic completion for C/C++/ObjC will be available
-- Configuring done
-- Generating done
-- Build files have been written to: /private/var/folders/6n/0qbj_8gj6gz8psmtnypkz33c0000gn/T/ycm_build_ozdu28_c
Scanning dependencies of target BoostParts
[  1%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/filesystem/src/codecvt_error_category.cpp.o
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 1
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[ 80%] Linking CXX static library libBoostParts.a
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libBoostParts.a(windows_file_codecvt.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libBoostParts.a(icu.cpp.o) has no symbols
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/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libBoostParts.a(w32_regex_traits.cpp.o) has no symbols
[ 80%] Built target BoostParts
Scanning dependencies of target ycm_core
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[100%] Linking CXX shared library /Users/zhoutiangang/.vim/bundle/YouCompleteMe/third_party/ycmd/ycm_core.so
[100%] Built target ycm_core

some configuration

let g:ycm_server_python_interpreter ='/Users/zhoutiangang/anaconda3/bin/python'
let g:ycm_python_binary_path = '/Users/zhoutiangang/anaconda3/bin/python'

which python
/Users/zhoutiangang/anaconda3/bin/python

[bstaletic]

Since anaconda is known to cause some troubles for some users and thus isn't officially supported, can you try ycmd compiled against and interpreted by the "vanilla" python?

[tgzhou98]

@bstaletic It's indeed a version problem.
Thanks a lot.
Please close the issue.

[bstaletic]

Thanks for confirming that's the issue.