'--locked-mode / RestoreLockedMode' causes spurious Restore failures when ProjectReferences are involved

[bergbria]

Details about Problem

dotnet.exe --version (if appropriate): 2.2.100

Detailed repro steps

1. Create 2 .csproj files targeting netstandard2.0 using the vanilla VS templates (say dll.csproj and exe.csproj)

2. Add a project reference from one project to the other (say exe.csproj references dll.csproj)

3. cd next to the referencing project (exe.csproj)

4. dotnet restore --use-lock-file

   • This succeeds and correctly generates a lock file

5. dotnet restore --use-lock-file --locked-mode

   • This fails even though we haven't changed anything since the lock file was originally generated

Sample Project

Sample project here: badLockedModeRepro.zip

You can reproduce the issue by unzipping it and running [root]\repro.bat.

[jainaashish]

Merged to release-4.9.3-rtm branch with 24559a4553880661efdae2e6ec89c877b3a281ef

[Lizzy-Gallagher]

@jainaashish @rrelyea I am still seeing this error but only when the project reference is a Console project. I was able to reproduce today with NuGet 4.9.4.5839. Happy to open another issue with a similar repro.