Can’t find crates that Cargo got from crates.io

[andersk]

In a Cargo project with a dependency on (say) the num crate, flycheck-rust reports “can't find crate for num” on the extern crate num; line.

$ cat Cargo.toml
[package]
name = "foo"
version = "0.0.1"

[dependencies]
num = "*"

$ cat src/lib.rs
extern crate num;

$ cargo build
    Updating registry `https://github.com/rust-lang/crates.io-index`
   Compiling rustc-serialize v0.3.12
   Compiling libc v0.1.5
   Compiling log v0.3.1
   Compiling rand v0.3.7
   Compiling num v0.1.21
   Compiling foo v0.0.1 (file:///tmp/foo)

[andersk]

I guess this is probably the same underlying problem as #5.

[swsnr]

@andersk Can you should me the output of find target in your project directory? I presume the layout of the build directory of Cargo changed.

Ultimately, though, we'll always suffer from issues like this, until we have a way to extract the build settings from Cargo itself. See rust-lang/cargo#1434.

[utkarshkukreti]

The debug build output is now stored in /target/debug instead of /target. This should work: https://gist.github.com/utkarshkukreti/d7e2016e72bb03af15eb

[andersk]

@utkarshkukreti: Yes, that’s exactly it, and your patch fixes it.

[swsnr]

@andersk @utkarshkukreti Great, thanks. I fixed the issue.