Youcompleteme: ycmd shutdown with exit code -11 at vim starts

[lightingghost]

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.
• [ ] 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

Provide a clear description of the problem, including the following key
questions:

• What did you do?

start vim, and ycmd gives an error of The ycmd server SHUT DOWN (restart with ':YcmRestartServer'). Unexpected exit code -11. Type ':YcmToggleLogs ycmd_52907_stderr_R736k6.log' to check the logs.

• What did you expect to happen?

ycmd starts smoothly.

• What actually happened?

ycmd gives an error of The ycmd server SHUT DOWN (restart with ':YcmRestartServer'). Unexpected exit code -11. Type ':YcmToggleLogs ycmd_52907_stderr_R736k6.log' to check the logs.

Diagnostic data

Output of vim --version

VIM - Vi IMproved 8.0 (2016 Sep 12, compiled Nov 29 2017 18:37:46)
Included patches: 1-503, 505-680, 682-1283
Compiled by [email protected]
Normal 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/dyn      +viminfo
+cscope          +lispindent      -python3         +vreplace
+cursorbind      +listcmds        +quickfix        +wildignore
+cursorshape     +localmap        +reltime         +wildmenu
+dialog_con      -lua             -rightleft       +windows
+diff            +menu            +ruby/dyn        +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/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H   -DMACOS_X_UNIX  -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
Linking: gcc   -L/usr/local/lib -o vim        -lm -lncurses  -liconv -framework Cocoa

Output of YcmDebugInfo

The ycmd server SHUT DOWN (restart with ':YcmRestartServer'). Unexpected exit code -11. Type
':YcmToggleLogs ycmd_52907_stderr_R736k6.log' to check the logs.
"/var/folders/f0/_9y6jfgn1xl2x4ntbqzj9zq00000gn/T/ycmd_52907_stderr_R736k6.log" 0L, 0C
"/var/folders/f0/_9y6jfgn1xl2x4ntbqzj9zq00000gn/T/ycm_w8pQ_v.log" 34L, 3199C
Printing YouCompleteMe debug information...
-- Client logfile: /var/folders/f0/_9y6jfgn1xl2x4ntbqzj9zq00000gn/T/ycm_w8pQ_v.log
-- Server errored, no debug info from server
-- Server running at: http://127.0.0.1:52907
-- Server process ID: 5709
-- Server logfiles:
--   /var/folders/f0/_9y6jfgn1xl2x4ntbqzj9zq00000gn/T/ycmd_52907_stdout_2_Mmf2.log
--   /var/folders/f0/_9y6jfgn1xl2x4ntbqzj9zq00000gn/T/ycmd_52907_stderr_R736k6.log

Contents of YCM, ycmd and completion engine logfiles

Client log file:

2018-05-26 21:07:13,157 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 79, in HandleFuture
    return _JsonFromFuture( future )
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 239, in _JsonFromFuture
    response = future.result()
  File "/Users/odin/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/odin/.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=52907): Max retries exceeded with url: /ready (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x104fff490>: Failed to establish a new connection: [Errno 61] Connection refused',))
2018-05-26 21:07:13,260 - ERROR - The ycmd server SHUT DOWN (restart with ':YcmRestartServer'). Unexpected exit code -11. Type ':YcmToggleLogs ycmd_52907_stderr_R736k6.log' to check the logs.
2018-05-26 21:07:21,361 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 79, in HandleFuture
    return _JsonFromFuture( future )
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 239, in _JsonFromFuture
    response = future.result()
  File "/Users/odin/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/odin/.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=52907): Max retries exceeded with url: /debug_info (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x104fff290>: Failed to establish a new connection: [Errno 61] Connection refused',))
2018-05-26 21:07:40,456 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 79, in HandleFuture
    return _JsonFromFuture( future )
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 239, in _JsonFromFuture
    response = future.result()
  File "/Users/odin/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/odin/.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=52907): Max retries exceeded with url: /debug_info (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x105022fd0>: Failed to establish a new connection: [Errno 61] Connection refused',))
2018-05-26 21:17:13,120 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 79, in HandleFuture
    return _JsonFromFuture( future )
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 239, in _JsonFromFuture
    response = future.result()
  File "/Users/odin/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 397, in result
    return self.__get_result()
  File "/Users/odin/.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=52907): Max retries exceeded with url: /healthy (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x105034410>: Failed to establish a new connection: [Errno 61] Connection refused',))
2018-05-26 21:22:32,454 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 79, in HandleFuture
    return _JsonFromFuture( future )
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 239, in _JsonFromFuture
    response = future.result()
  File "/Users/odin/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/odin/.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=52907): Max retries exceeded with url: /debug_info (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x105034790>: Failed to establish a new connection: [Errno 61] Connection refused',))
2018-05-26 21:27:13,128 - ERROR - Unable to connect to server
Traceback (most recent call last):
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 79, in HandleFuture
    return _JsonFromFuture( future )
  File "/Users/odin/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 239, in _JsonFromFuture
    response = future.result()
  File "/Users/odin/.vim/bundle/YouCompleteMe/third_party/pythonfutures/concurrent/futures/_base.py", line 404, in result
    return self.__get_result()
  File "/Users/odin/.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=52907): Max retries exceeded with url: /healthy (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x105034b10>: Failed to establish a new connection: [Errno 61] Connection refused',))

Nothing in server log files

OS version, distribution, etc.

macOS 10.13.4

Output of build/install commands

Searching Python 3.6 libraries...
Found Python library: /Users/odin/miniconda3/lib/libpython3.6m.dylib
Found Python headers folder: /Users/odin/miniconda3/include/python3.6m
-- The C compiler identification is AppleClang 9.0.0.9000039
-- The CXX compiler identification is AppleClang 9.0.0.9000039
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc
-- Check for working C compiler: /Library/Developer/CommandLineTools/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: /Library/Developer/CommandLineTools/usr/bin/c++
-- Check for working CXX compiler: /Library/Developer/CommandLineTools/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/odin/miniconda3/lib/libpython3.6m.dylib (found suitable version "3.6.3", minimum required is "3.4")
-- Using libclang archive: /Users/odin/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp/../clang_archives/libclang-6.0.0-x86_64-apple-darwin.tar.bz2
-- Using libclang to provide semantic completion for C/C++/ObjC
-- Using external libclang: /private/var/folders/f0/_9y6jfgn1xl2x4ntbqzj9zq00000gn/T/ycm_build_2wx6x6tn/lib/libclang.dylib
-- NOT using clang-tidy for static analysis.
-- Configuring done
-- Generating done
-- Build files have been written to: /private/var/folders/f0/_9y6jfgn1xl2x4ntbqzj9zq00000gn/T/ycm_build_2wx6x6tn
Scanning dependencies of target BoostParts
[  1%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/filesystem/src/codecvt_error_category.cpp.o
[  3%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/filesystem/src/operations.cpp.o
[  7%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/filesystem/src/path_traits.cpp.o
[  7%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/filesystem/src/path.cpp.o
[  9%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/filesystem/src/portability.cpp.o
[ 11%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/filesystem/src/unique_path.cpp.o
[ 13%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/filesystem/src/utf8_codecvt_facet.cpp.o
[ 15%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/filesystem/src/windows_file_codecvt.cpp.o
[ 17%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/c_regex_traits.cpp.o
[ 19%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/cpp_regex_traits.cpp.o
[ 21%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/cregex.cpp.o
[ 23%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/fileiter.cpp.o
[ 25%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/icu.cpp.o
[ 26%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/instances.cpp.o
[ 28%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/posix_api.cpp.o
[ 30%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/regex.cpp.o
[ 32%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/regex_debug.cpp.o
[ 34%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/regex_raw_buffer.cpp.o
[ 36%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/regex_traits_defaults.cpp.o
[ 38%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/static_mutex.cpp.o
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[ 42%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/w32_regex_traits.cpp.o
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[ 46%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/wide_posix_api.cpp.o
[ 48%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/winstances.cpp.o
[ 50%] Building CXX object BoostParts/CMakeFiles/BoostParts.dir/libs/system/src/error_code.cpp.o
[ 51%] Linking CXX static library libBoostParts.a
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(windows_file_codecvt.cpp.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(icu.cpp.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(regex_debug.cpp.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(usinstances.cpp.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(w32_regex_traits.cpp.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(windows_file_codecvt.cpp.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(icu.cpp.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(regex_debug.cpp.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(usinstances.cpp.o) has no symbols
/Library/Developer/CommandLineTools/usr/bin/ranlib: file: libBoostParts.a(w32_regex_traits.cpp.o) has no symbols
[ 51%] Built target BoostParts
Scanning dependencies of target ycm_core
[ 53%] Building CXX object ycm/CMakeFiles/ycm_core.dir/Candidate.cpp.o
[ 57%] Building CXX object ycm/CMakeFiles/ycm_core.dir/CharacterRepository.cpp.o
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[ 98%] Building CXX object ycm/CMakeFiles/ycm_core.dir/ycm_core.cpp.o
[100%] Linking CXX shared library /Users/odin/.vim/bundle/YouCompleteMe/third_party/ycmd/ycm_core.so
[100%] Built target ycm_core
-- The C compiler identification is AppleClang 9.0.0.9000039
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Found PythonLibs: /Users/odin/miniconda3/lib/libpython3.6m.dylib (found version "3.6.3")
-- Configuring done
-- Generating done
-- Build files have been written to: /private/var/folders/f0/_9y6jfgn1xl2x4ntbqzj9zq00000gn/T/regex_build_ryjn5p70
Scanning dependencies of target _regex
[ 66%] Building C object CMakeFiles/_regex.dir/regex_3/_regex_unicode.c.o
[ 66%] Building C object CMakeFiles/_regex.dir/regex_3/_regex.c.o
[100%] Linking C shared library /Users/odin/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party/cregex/regex_3/_regex.so
[100%] Built target _regex

[micbou]

It's probably an incompatibility between Anaconda and ycmd (or more precisely the downloaded libclang binaries). You can further debug this by manually starting the server:

cd ~/.vim/bundle/YouCompleteMe/third_party/ycmd
cp ycmd/default_settings .
python ycmd --options_file default_settings

where python is the Python from your Miniconda installation. The default_settings file is copied because ycmd automatically removes the file passed to --options_file at startup.

[lightingghost]

@micbou Thanks for helping. The actually command I ran is

cp ycmd/default_settings.json .
python ycmd --options_file default_settings.json

And I got a segmentation fault:

[1]    12971 segmentation fault  python ycmd --options_file default_settings.json

[puremourning]

can you try with stock python (non anaconda)? we don't support the use of anaconda python because it often causes issues like this.

[lightingghost]

Hi @puremourning, thanks for helping. I have installed python3 with homebrew, but still got the error:

[1]    14819 segmentation fault  /usr/local/bin/python3 ycmd --options_file default_settings.json

[puremourning]

make sure to build ycmd with that python also, so

• python3 ./build.py <options>

[lightingghost]

@puremourning Thanks. It works now.

[jwkvam]

I haven't seen it mentioned anywhere but the python provided by conda-forge has worked consistently for me. It may be an easier option for some folks.

[langgithub]

@lightingghost thank you for your question.@puremourning thank you for your answer

[UlionTse]

can you try with stock python (non anaconda)? we don't support the use of anaconda python because it often causes issues like this.

Same Anaconda python, Linux is okay, Mac is fault. Cry~

[gzu300]

can you try with stock python (non anaconda)? we don't support the use of anaconda python because it often causes issues like this.

It's also possible that the python3 is installed under /usr/local/bin/python3 by homebrew.

I encountered the error: Searching Python 3.7 libraries... ERROR: Python headers are missing in /Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.7/Headers. when I used /usr/bin/python3.
But later I found out that actually homebrew installed another python3.7 under /usr/local/bin

So make sure you tried /usr/local/bin/python3 install.py as well.