Error message when local build is rejected with max-jobs = 0 is unclear

[xokdvium]

Is your feature request related to a problem?

The error message when a local build cannot be run is very unclear and unintuitive. See NixOS/nixpkgs#474878 (comment).

error: Cannot build '/nix/store/64y4mnlqv55vlnim6s8k8lb9lx7l3vjd-attrpaths-superset.json.drv'.
       Reason: required system or feature not available
       Required system: 'aarch64-linux' with features {}
       Current system: 'aarch64-linux' with features {benchmark, big-parallel, nixos-test, uid-range}

Proposed solution

The error message clearly states that no local builds can be run, because max-jobs is 0.

Alternative solutions

Additional context

Checklist

• checked latest Nix manual (source)
• checked open feature issues and pull requests for possible duplicates

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