Non-prerelease packages cannot have prerelease dependencies: > src/NServiceBus.PersistenceTests/NServiceBus.PersistenceTests.csproj - Dependency 'NUnit' should be defined as a version range so that users can't accidentally update to a version with breaking changes. > src/NServiceBus.Core/NServiceBus.Core.csproj - Dependency 'NServiceBus.MessageInterfaces' should be defined as a version range so that users can't accidentally update to a version with breaking changes. > src/NServiceBus.TransportTests/NServiceBus.TransportTests.csproj - Dependency 'NUnit' should be defined as a version range so that users can't accidentally update to a version with breaking changes. > src/NServiceBus.AcceptanceTesting/NServiceBus.AcceptanceTesting.csproj - Dependency 'NUnit' should be defined as a version range so that users can't accidentally update to a version with breaking changes.