this derivation will be built:
  /nix/store/xcchr8d79l4yrxn5b3xyiizh08ikby4p-inputDerivation-publish-iso-private-legacy.drv
building '/nix/store/xcchr8d79l4yrxn5b3xyiizh08ikby4p-inputDerivation-publish-iso-private-legacy.drv' on 'ssh-ng://nix-remote-builder@100.122.253.110'...
copying 0 paths...
building '/nix/store/xcchr8d79l4yrxn5b3xyiizh08ikby4p-inputDerivation-publish-iso-private-legacy.drv'...
copying 1 paths...
copying path '/nix/store/3c0ww4dy78nykvfc3zxyg8fbgzd7x40m-inputDerivation-publish-iso-private-legacy' from 'ssh-ng://nix-remote-builder@100.122.253.110'...
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy