intellij-rust uses cargo `--all-targets` by default causing: error[E0463]: can't find crate for `test`

[stianeklund]

Environment

• IntelliJ Rust plugin version: 0.2.119.2172-193
• Rust toolchain version: nightly-x86_64-pc-windows-gnu (1.44.0)
• IDE name and version: CLion 2019.3
• Operating system:Windows 10 1909 x64

Problem description

The problem is that Intelij Rust invokes cargo with all-targets which doesn't work well for certain targets. Building the project manually with cargo build from the command line works just fine.

Somewhat related issues:

• no_std targets, can't find crate for test rust-lang/rls#1524
• Still getting 'can't find crate` error rust-lang/vscode-rust#579
• no_std Can't find crate for 'test' rust-lang/vscode-rust#729

Ref:

   Compiling blinky v0.1.0 (D:\dev\projects\blinky)
error[E0463]: can't find crate for `test`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0463`.
error: could not compile `blinky`.

To learn more, run the command again with --verbose.

Steps to reproduce

1. Have nightly-x86_64-pc-windows-gnu toolchain installed (ref rustc 1.44.0-nightly (6dee5f112 2020-04-06))
2. Install target thumbv7em-none-eabihf.
3. Create directory .cargo and config file in subdirectory.

The config file in this case specifies the target (see below):

.cargo/config's contents:

[target.thumbv7em-none-eabihf]
rustflags = [
  "-C", "link-arg=-Tlink.x",
]

[build]
target = "thumbv7em-none-eabihf"

4. Use main.rs and cargo.toml contents from: https://gist.github.com/stianeklund/7965a4533f99bda2a7a92ab67b0baa56

Project was created from following steps at: https://github.com/stm32-rs/stm32f4xx-hal

[mchernyavsky]

Hello.

Try to disable the Compile all project targets if possible option in Preferences > Languages & Frameworks > Rust > Cargo.

[stianeklund]

@mchernyavsky Thanks I tested this but it seems maybe that the build process hangs when I do this, however after updating to the latest nightly this issue no longer seems to be a problem.