cargo build --out-dir does not place tests in out dir

[stepancheg]

Problem

Test binaries are not copied to out dir.

Repro:

• clone any repo with tests for example https://github.com/servo/rust-fnv
• cargo build -Zunstable-options --out-dir 11 copies rlib to directory 11
• cargo build -Zunstable-options --tests --out-dir 11 does not place test binary in 11 directory

cargo build --help says:

--out-dir <PATH>          Copy final artifacts to this directory (unstable)

Not clear what is "final artifact", but if a user requested to build a test, then the test binary must be the artifact?

Proposed Solution

Unknown. I built a test, and now I need to debug it. How do I find the test binary path?

Notes

No response

[weihanglo]

Thanks for the report and please see #11110.

#3670 may also have a possible route to the solution. I am not really sure though.

[weihanglo]

I am going to close this. We will track it in #3670. I think this is kinda a XY problem. We wanted to get the test binary. Tried out --out-dir but it turns out not working. There are also some alternatives in #11110. If this is wrong and the issue should remain open, please let us know. Thank you.