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error:
       … while evaluating the attribute 'drvPath'
         at «git+https://github.com/NixOS/nixpkgs?ref=nixpkgs-unstable&rev=b6c8664de9b6cc07fe5666a29f91884ba81197c4&shallow=1»/lib/customisation.nix:416:11:
          415|         // {
          416|           drvPath =
             |           ^
          417|             assert condition;

       … while calling the 'derivationStrict' builtin
         at «nix-internal»/derivation-internal.nix:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating the option `driverConfiguration.vms.server.start_script':

       … while evaluating definitions from `/nix/store/84xbks2h7qk6lavs0pk4j6898381sn5p-source/nixos/lib/testing/driver-configuration.nix':

       … while evaluating the option `nodes.server.system.build.toplevel':

       … while evaluating definitions from `/nix/store/84xbks2h7qk6lavs0pk4j6898381sn5p-source/nixos/modules/system/activation/top-level.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error:
       Failed assertions:
       - The option definition `security.unprivilegedUsernsClone' in `makeTest parameters' no longer has any effect; please remove it.
       to disable or enable unprivileged user namespaces please use
       the sysctl "user.max_user_namespaces".

error:
       … while evaluating the attribute 'drvPath'
         at «git+https://github.com/NixOS/nixpkgs?ref=nixpkgs-unstable&rev=b6c8664de9b6cc07fe5666a29f91884ba81197c4&shallow=1»/lib/customisation.nix:416:11:
          415|         // {
          416|           drvPath =
             |           ^
          417|             assert condition;

       … while calling the 'derivationStrict' builtin
         at «nix-internal»/derivation-internal.nix:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating the option `driverConfiguration.vms.server.start_script':

       … while evaluating definitions from `/nix/store/84xbks2h7qk6lavs0pk4j6898381sn5p-source/nixos/lib/testing/driver-configuration.nix':

       … while evaluating the option `nodes.server.system.build.toplevel':

       … while evaluating definitions from `/nix/store/84xbks2h7qk6lavs0pk4j6898381sn5p-source/nixos/modules/system/activation/top-level.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error:
       Failed assertions:
       - The option definition `security.unprivilegedUsernsClone' in `makeTest parameters' no longer has any effect; please remove it.
       to disable or enable unprivileged user namespaces please use
       the sysctl "user.max_user_namespaces".