zef exception.txt

zef --force install zef                                                                                                                               
===> Searching for: zef
No such method 'subst' for invocant of type 'Any'
  in method ver at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 127
  in method hash at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 21
  in method hash at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 114
  in code  at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 93
  in method provides-spec-matcher at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 104
  in method contains-spec at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 109
  in block  at /home/zxl/.perl6/sources/CC4C7EC4C45AB0D68BADE06496EC9FCE848A404D (Zef::Repository::Ecosystems) line 65
  in code  at /home/zxl/.perl6/sources/CC4C7EC4C45AB0D68BADE06496EC9FCE848A404D (Zef::Repository::Ecosystems) line 64
  in code  at /home/zxl/.perl6/sources/394CB341189418280DF32315863ACE6FBE5A109A (Zef::Repository) line 13
  in method candidates at /home/zxl/.perl6/sources/394CB341189418280DF32315863ACE6FBE5A109A (Zef::Repository) line 10
  in method find-candidates at /home/zxl/.perl6/sources/D8DA75990175D86E5B61B6B9E506E25253D1BFAB (Zef::Client) line 107
  in method find-candidates at /home/zxl/.perl6/sources/D8DA75990175D86E5B61B6B9E506E25253D1BFAB (Zef::Client) line 90
  in sub MAIN at /home/zxl/.perl6/sources/6F39CCA374659C093503FF4C13A983A1D0F01561 (Zef::CLI) line 132
  in block <unit> at /home/zxl/.perl6/resources/91912DE126EF74B0DBCD199E9980588404D45304 line 1
  in sub MAIN at /home/zxl/.perl6/bin/zef line 2
  in block <unit> at /home/zxl/.perl6/bin/zef line 2

[~]$ zef upgrade zef                                                                                                                                       
===> Searching for: zef
No such method 'subst' for invocant of type 'Any'
  in method ver at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 127
  in method hash at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 21
  in method hash at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 114
  in code  at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 93
  in method provides-spec-matcher at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 104
  in method contains-spec at /home/zxl/.perl6/sources/9756868438DDE0714C93D15FD24A6F194A0ECF9F (Zef::Distribution) line 109
  in block  at /home/zxl/.perl6/sources/CC4C7EC4C45AB0D68BADE06496EC9FCE848A404D (Zef::Repository::Ecosystems) line 65
  in code  at /home/zxl/.perl6/sources/CC4C7EC4C45AB0D68BADE06496EC9FCE848A404D (Zef::Repository::Ecosystems) line 64
  in code  at /home/zxl/.perl6/sources/394CB341189418280DF32315863ACE6FBE5A109A (Zef::Repository) line 13
  in method candidates at /home/zxl/.perl6/sources/394CB341189418280DF32315863ACE6FBE5A109A (Zef::Repository) line 10
  in method find-candidates at /home/zxl/.perl6/sources/D8DA75990175D86E5B61B6B9E506E25253D1BFAB (Zef::Client) line 107
  in method find-candidates at /home/zxl/.perl6/sources/D8DA75990175D86E5B61B6B9E506E25253D1BFAB (Zef::Client) line 90
  in sub MAIN at /home/zxl/.perl6/sources/6F39CCA374659C093503FF4C13A983A1D0F01561 (Zef::CLI) line 236
  in block <unit> at /home/zxl/.perl6/resources/91912DE126EF74B0DBCD199E9980588404D45304 line 1
  in sub MAIN at /home/zxl/.perl6/bin/zef line 2
  in block <unit> at /home/zxl/.perl6/bin/zef line 2

[~]$ zef info zef                                                                                                                                          
- Info for: zef
- Identity: zef:ver('0.1.25'):auth('github:ugexe')
- Recommended By: /home/zxl/.perl6
Description:	 It's like [cpanm] wearing high heels with a tracksuit
License:	 Artistic-2.0
Source-url:	 git://github.com/ugexe/zef.git
Provides: 35 modules
Support:
#   bugtracker:	https://github.com/ugexe/zef/issues
Depends: 0 items
[~]$ perl6 -v                                                                                                                                              
This is Rakudo version 2017.07 built on MoarVM version 2017.07
implementing Perl 6.c.