test.rb:1: [BUG] Segmentation fault at 0x00000000000020
ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-darwin16]

-- Crash Report log information --------------------------------------------
   See Crash Report log file under the one of following:
     * ~/Library/Logs/CrashReporter
     * /Library/Logs/CrashReporter
     * ~/Library/Logs/DiagnosticReports
     * /Library/Logs/DiagnosticReports
   for more details.
Don't forget to include the above Crash Report log file in bug reports.

-- Control frame information -----------------------------------------------
c:0003 p:---- s:0009 e:000008 CFUNC  :gsub
c:0002 p:0011 s:0004 E:001ee0 EVAL   test.rb:1 [FINISH]
c:0001 p:0000 s:0002 E:0004b0 (none) [FINISH]

-- Ruby level backtrace information ----------------------------------------
test.rb:1:in `<main>'
test.rb:1:in `gsub'

-- Machine register context ------------------------------------------------
 rax: 0x00007ffc4383d708 rbx: 0x00007ffc4383dcbf rcx: 0x0000000000510005
 rdx: 0x0000000000000005 rdi: 0x00007ffc4383d708 rsi: 0x0000000000000001
 rbp: 0x00007fff53d8d0d0 rsp: 0x00007fff53d8d030  r8: 0x0000000000000001
  r9: 0x00007ffc42701570 r10: 0x00007ffc44800000 r11: 0xfffffffffffffa5d
 r12: 0x000000004486e701 r13: 0x00007ffc4383dcbb r14: 0x00007ffc4383d708
 r15: 0x0000000000000008 rip: 0x000000010bf2c054 rfl: 0x0000000000010206

-- C level backtrace information -------------------------------------------
0   libruby.2.3.0.dylib                 0x000000010bfb98aa rb_print_backtrace + 29
1   libruby.2.3.0.dylib                 0x000000010bfb9a8d rb_vm_bugreport + 375
2   libruby.2.3.0.dylib                 0x000000010beb06bb rb_bug_context + 217
3   libruby.2.3.0.dylib                 0x000000010bf4f12b sig_do_nothing + 0
4   libsystem_platform.dylib            0x00007fffb7c05bba _sigtramp + 26
5   libruby.2.3.0.dylib                 0x000000010bf2c054 rb_reg_regsub + 1028
6   libruby.2.3.0.dylib                 0x000000010bf6bf5b str_gsub + 763
7   libruby.2.3.0.dylib                 0x000000010bfb1dd1 vm_call_cfunc + 254
8   libruby.2.3.0.dylib                 0x000000010bfa378d vm_exec_core + 6888
9   libruby.2.3.0.dylib                 0x000000010bfae3da vm_exec + 123
10  libruby.2.3.0.dylib                 0x000000010beb50ff ruby_exec_internal + 154
11  libruby.2.3.0.dylib                 0x000000010beb501e ruby_run_node + 54
12  ruby                                0x000000010be73f3e main + 79

-- Other runtime information -----------------------------------------------

* Loaded script: test.rb

* Loaded features:

    0 enumerator.so
    1 thread.rb
    2 rational.so
    3 complex.so
    4 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/x86_64-darwin16/enc/encdb.bundle
    5 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/x86_64-darwin16/enc/trans/transdb.bundle
    6 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/unicode_normalize.rb
    7 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/x86_64-darwin16/rbconfig.rb
    8 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/compatibility.rb
    9 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/defaults.rb
   10 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/deprecate.rb
   11 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/errors.rb
   12 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/version.rb
   13 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/requirement.rb
   14 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/platform.rb
   15 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/basic_specification.rb
   16 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/stub_specification.rb
   17 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/util/list.rb
   18 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/x86_64-darwin16/stringio.bundle
   19 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/specification.rb
   20 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/exceptions.rb
   21 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/defaults/operating_system.rb
   22 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/dependency.rb
   23 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/core_ext/kernel_gem.rb
   24 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/monitor.rb
   25 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb
   26 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems.rb
   27 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/rubygems/path_support.rb
   28 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/version.rb
   29 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/core_ext/name_error.rb
   30 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/levenshtein.rb
   31 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/jaro_winkler.rb
   32 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/spell_checkable.rb
   33 /usr/local/Cellar/ruby/2.3.3/lib/ruby/2.3.0/delegate.rb
   34 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/spell_checkers/name_error_checkers/class_name_checker.rb
   35 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb
   36 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/spell_checkers/name_error_checkers.rb
   37 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/spell_checkers/method_name_checker.rb
   38 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/spell_checkers/null_checker.rb
   39 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean/formatter.rb
   40 /usr/local/lib/ruby/gems/2.3.0/gems/did_you_mean-1.0.0/lib/did_you_mean.rb

[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

