Minimal example throw signal ABRT

[mhartington]

Using the minimal example from the readme for porting a neovim pluing seems to be failing

https://github.com/roxma/nvim-yarp#example-for-existing-neovim-rplugin-porting-to-vim-8

$ vim
Vim: Caught deadly signal ABRT
Vim: Finished.

zsh: abort      vim

Vim info

version
VIM - Vi IMproved 8.0 (2016 Sep 12, compiled Jul 31 2017 11:15:34)
MacOS X (unix) version
Included patches: 1-771
Compiled by Homebrew
Huge version with MacVim GUI.  Features included (+) or not (-):
+acl             +diff            +jumplist        +mouse_urxvt     +scrollbind      +vertsplit
+arabic          +digraphs        +keymap          +mouse_xterm     +signs           +virtualedit
+autocmd         +dnd             +lambda          +multi_byte      +smartindent     +visual
+balloon_eval    -ebcdic          +langmap         +multi_lang      +startuptime     +visualextra
+browse          +emacs_tags      +libcall         -mzscheme        +statusline      +viminfo
++builtin_terms  +eval            +linebreak       +netbeans_intg   -sun_workshop    +vreplace
+byte_offset     +ex_extra        +lispindent      +num64           +syntax          +wildignore
+channel         +extra_search    +listcmds        +odbeditor       +tag_binary      +wildmenu
+cindent         +farsi           +localmap        +packages        +tag_old_static  +windows
+clientserver    +file_in_path    +lua             +path_extra      -tag_any_white   +writebackup
+clipboard       +find_in_path    +menu            +perl            -tcl             -X11
+cmdline_compl   +float           +mksession       +persistent_undo +termguicolors   -xfontset
+cmdline_hist    +folding         +modify_fname    +postscript      -terminal        +xim
+cmdline_info    -footer          +mouse           +printer         +terminfo        -xpm
+comments        +fork()          +mouseshape      +profile         +termresponse    -xsmp
+conceal         +fullscreen      +mouse_dec       -python          +textobjects     -xterm_clipboard
+cryptv          -gettext         -mouse_gpm       +python3         +timers          -xterm_save
+cscope          -hangul_input    -mouse_jsbterm   +quickfix        +title
+cursorbind      +iconv           +mouse_netterm   +reltime         +toolbar
-- More --

Not sure if it's my version of Vim or what, but not sure where to go from here. What more can I provide to help debug this?