Error in the build console while opening some projects

[iamshreeram]

The error in the build console appears when trying to open certain rust projects.

Execution failed (exit code 101).
/Users/home/.cargo/bin/cargo metadata --verbose --format-version 1 --all-features --filter-platform aarch64-apple-darwin
stdout : error: current package believes it's in a workspace when it's not:
current:   /Users/home/ram/project/rust/crash-course/Cargo.toml
workspace: /Users/home/ram/project/rust/Cargo.toml

this may be fixable by adding `crash-course` to the `workspace.members` array of the manifest located at: /Users/home/ram/project/rust/Cargo.toml
Alternatively, to keep it out of the workspace, add the package to the `workspace.exclude` array, or add an empty `[workspace]` table to the package's manifest.

stderr : 

Additionally, I would like to know if there is a way to open all of my rust projects in a single workspace, or if there is a way to attach a new project to an existing IntelliJ instance instead of opening it in a new instance.