`cargo ws publish` segfaults on Nix

## To reproduce

install [Nix](https://nixos.org/download.html) and run these commands:

```sh
cargo new foo
cd foo
cat <<EOF > shell.nix
{ pkgs ? import <nixpkgs> {} }: pkgs.mkShell {
  packages = with pkgs; [
    cargo
    rustc
    cargo-workspaces
  ];
}
EOF
nix-shell --run 'cargo ws publish --from-git'
```