Although the behaviour is fine, there should be indication through the CLI output that no features could be pruned so it wasn't included in the output. Especially in workspaces, this may lead to confusion as the report json is written but does not contain the crate.
Describe the bug When removing all features of a specific crate fails with
Failed to compile without feature flag. error: ..., the following code prevents the report from containing the crate. https://github.com/TimonPost/cargo-unused-features/blob/315fb128a9742dda8a9a143124f914c49fcb781a/src/subcommands/analyze.rs#L236Although the behaviour is fine, there should be indication through the CLI output that no features could be pruned so it wasn't included in the output. Especially in workspaces, this may lead to confusion as the report json is written but does not contain the crate.
Provide the following information
--bin --libs --tests --examples