Unable to find appropriate src/main.rs if it's in src/bin/main.rs

[ehiggs]

According to rust-lang/rust#40185, the following test case should pass:

#[test]
fn run_proper_binary_main_rs() {
    let p = project("foo")
        .file("Cargo.toml", r#"
            [package]
            name = "foo"
            authors = []
            version = "0.0.0"
            [[bin]]
            name = "foo"
        "#)
        .file("src/lib.rs", "")
        .file("src/bin/main.rs", r#"
            fn main() {
            }
        "#);

    assert_that(p.cargo_process("run").arg("--bin").arg("foo"),
                execs().with_status(0));
}

The problem appears to be that cargo should look for src/bin/main.rs as well as src/main.rs for defaults when named binaries are not found in src/bin/<name>.rs. This was introduced in e3edc06.

[ehiggs]

@jmatraszek, do you have bandwidth to take a look at this? Thanks

[jmatraszek]

@ehiggs Yes, investigating.

[jmatraszek]

Proposed fix in #3818.

[alexcrichton]

Thanks for the quick fix @jmatraszek!