these 2 derivations will be built:
  /nix/store/p27dg1fddfhnx7sda5bxi9yxi1p7gb7z-managed-config.drv
  /nix/store/fp4qg61cvsl0sggrxjsydvc3m496c9hz-managed-config-rehearsal.drv
building '/nix/store/p27dg1fddfhnx7sda5bxi9yxi1p7gb7z-managed-config.drv'
managed-config> structuredAttrs is enabled
building '/nix/store/fp4qg61cvsl0sggrxjsydvc3m496c9hz-managed-config-rehearsal.drv'
managed-config-rehearsal> --- json replace drops and reports undeclared keys
managed-config-rehearsal> managed-config t: dropped undeclared keys: a.old, list[].k, stale
managed-config-rehearsal> --- yaml replace drops and reports undeclared keys
managed-config-rehearsal> managed-config t: dropped undeclared keys: a.old, list[].k, stale
managed-config-rehearsal> --- toml replace drops and reports undeclared keys
managed-config-rehearsal> managed-config t: dropped undeclared keys: a.old, list[].k, stale
managed-config-rehearsal> --- appOwned nested paths are preserved
managed-config-rehearsal> managed-config t: dropped undeclared keys: stale
managed-config-rehearsal> --- appOwned absent from the old file is not invented
managed-config-rehearsal> --- externalPaths are excluded from the drop report
managed-config-rehearsal> managed-config t: dropped undeclared keys: features.other, gone
managed-config-rehearsal> --- unreadable target with appOwned is refused and untouched
managed-config-rehearsal> managed-config t: /build/row/cfg/config.json is unreadable or not a mapping; left untouched
managed-config-rehearsal> --- non-mapping target with appOwned is refused and untouched
managed-config-rehearsal> managed-config t: /build/row/cfg/config.yaml is unreadable or not a mapping; left untouched
managed-config-rehearsal> --- explicit null target with appOwned is refused and untouched
managed-config-rehearsal> managed-config y: /build/row/cfg/config.yaml is unreadable or not a mapping; left untouched
managed-config-rehearsal> managed-config j: /build/row/cfg/config.json is unreadable or not a mapping; left untouched
managed-config-rehearsal> --- empty target with appOwned reads as an empty mapping
managed-config-rehearsal> --- unreadable target without appOwned is replaced with a notice
managed-config-rehearsal> managed-config t: replaced unreadable /build/row/cfg/config.json
managed-config-rehearsal> --- fileMode is applied
managed-config-rehearsal> --- a failing spec does not stop later specs
managed-config-rehearsal> managed-config bad: /build/row/cfg/bad.json is unreadable or not a mapping; left untouched
managed-config-rehearsal> --- missing parent directories are created
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy

upload niks3: ok