this derivation will be built:
  /nix/store/hj400h467s4h01pq2s34ljpjndlf0s29-interpolate-conformance.drv
building '/nix/store/hj400h467s4h01pq2s34ljpjndlf0s29-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy

upload niks3: ok