dump env vars
ZEF_TEST_DEGREE=5
ZEF_FETCH_DEGREE=1
install [File-TreeBuilder]
...
/tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/share/perl6/site/bin/zef
1.0.0
/tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/bin//raku
Welcome to Rakudo™ v2025.11.
Implementing the Raku® Programming Language v6.d.
Built on MoarVM version 2025.11.
===> Searching for: File-TreeBuilder
Aborting due to test failure: File-TreeBuilder:ver<0.1.1>:auth<zef:lucs> (use --force-test to override)
===> Searching for missing dependencies: Test::Selector
===> Searching for missing dependencies: Path::Finder
===> Staging Path::Finder:ver<0.4.7>:auth<zef:leont>
===> Staging [OK] for Path::Finder:ver<0.4.7>:auth<zef:leont>
===> Staging Test::Selector:ver<0.4.0>:auth<zef:lucs>
===> Staging [OK] for Test::Selector:ver<0.4.0>:auth<zef:lucs>
===> Staging File-TreeBuilder:ver<0.1.1>:auth<zef:lucs>
===> Staging [OK] for File-TreeBuilder:ver<0.1.1>:auth<zef:lucs>
===> Testing: Path::Finder:ver<0.4.7>:auth<zef:leont>
===> Testing: Test::Selector:ver<0.4.0>:auth<zef:lucs>
===> Testing: File-TreeBuilder:ver<0.1.1>:auth<zef:lucs>
[File-TreeBuilder] Could not find symbol '&tempdir' in 'File::Temp'
[File-TreeBuilder]   in sub  at t/main.rakutest line 181
[File-TreeBuilder]   in block  at /tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/share/perl6/site/sources/F0EEBCA08BA2A3C9C4C2914FFD5F5FC619FDCCE5 (Test::Selector) line 535
[File-TreeBuilder]   in sub <anon> at /tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/share/perl6/site/sources/F0EEBCA08BA2A3C9C4C2914FFD5F5FC619FDCCE5 (Test::Selector) line 523
[File-TreeBuilder]   in sub block-def at /tmp/whateverable/rakudo-moar/fe0e20c28859ea709eefad19af452c9d35dff20d/share/perl6/site/sources/F0EEBCA08BA2A3C9C4C2914FFD5F5FC619FDCCE5 (Test::Selector) line 506
[File-TreeBuilder]   in sub confirm-build at t/main.rakutest line 180
[File-TreeBuilder]   in block <unit> at t/main.rakutest line 208
===> Testing [FAIL]: File-TreeBuilder:ver<0.1.1>:auth<zef:lucs>