Reproducer for japaric/xargo#261

env RUST_TARGET_PATH=$(pwd) xargo rustc --release --target x86_64-unknown-linux-mygnu -- -C link-args=-nostartfiles

Error:

   Compiling reproducer v0.1.0 (/home/roblabla/Dropbox/dev/src/rust/reproducer)
error[E0523]: found two different crates with name `nocorelib` that are not distinguished by differing `-C metadata`. This will result in symbol conflicts between the two.
 --> src/main.rs:4:1
  |
4 | extern crate nocorelib;
  | ^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

error: could not compile `reproducer`.

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

This reproducer works by having both libcore and the reproducer binary depend on nocorelib. When building in release, nocorelib will have the same hash, and this will result in the above error.