Fail to install Sparrow6

===> Searching for: Sparrow6
===> Found: Sparrow6:ver<0.0.4> [via Zef::Repository::LocalCache]
===> Searching for missing dependencies: File::Directory::Tree, Hash::Merge, YAMLish, JSON::Tiny
===> Found dependencies: JSON::Tiny:ver<1.0>, Hash::Merge:ver<1.0.0>:auth<github:scriptkitties>:api<1> [via Zef::Repository::Ecosystems<cpan>]
===> Found dependencies: YAMLish:ver<0.0.5>, File::Directory::Tree:auth<labster> [via Zef::Repository::Ecosystems<p6c>]
===> Searching for missing dependencies: MIME::Base64
===> Found dependencies: MIME::Base64:ver<1.2.1>:auth<github:retupmoca> [via Zef::Repository::Ecosystems<p6c>]
===> Fetching [OK]: JSON::Tiny:ver<1.0> to /home/scheck/.zef/tmp/1563478123.7641.6675/JSON-Tiny-1.0.tar.gz
===> Fetching [OK]: Hash::Merge:ver<1.0.0>:auth<github:scriptkitties>:api<1> to /home/scheck/.zef/tmp/1563478123.7641.671/Hash-Merge-1.0.0.tar.gz
===> Fetching [OK]: YAMLish:ver<0.0.5> to /home/scheck/.zef/tmp/1563478123.7641.793/yamlish.git
===> Fetching [OK]: File::Directory::Tree:auth<labster> to /home/scheck/.zef/tmp/1563478125.7641.1497/p6-file-directory-tree.git
===> Fetching [OK]: MIME::Base64:ver<1.2.1>:auth<github:retupmoca> to /home/scheck/.zef/tmp/1563478126.7641.5747/Perl6-MIME-Base64.git
===> Extraction: Failed to find a META6.json file for JSON::Tiny:ver<1.0> -- failure is likely
Extracting with plugin Zef::Service::Shell::tar+{<anon|1>} aborted.
No such method 'IO' for invocant of type 'Any'

$ zef --version
v0.7.4
[scheck@coming-dhpf00 ~]$ perl6 -v
This is Rakudo version 2019.07 built on MoarVM version 2019.07
implementing Perl 6.d.