Allow colons in project directory name

[minijackson]

Steps to reproduce:

• cargo new bla
• mv bla "bla:"
• cd "bla:"
• cargo test --verbose

Error:

error: failed to join search paths together: path segment contains separator `:`
Does $LD_LIBRARY_PATH have an unterminated quote character?

Caused by:
  failed to join path array: ["/tmp/bla:/target/debug/deps", "/home/minijackson/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib"]

As LD_LIBRARY_PATH is a Unix thingy, I don't know if it is reproducible in Windows ;-)

Meta:

rustc 1.17.0-nightly (0e7727795 2017-02-19)
binary: rustc
commit-hash: 0e77277950aafd38ce3e52b7b1cd9bcc6664de3c
commit-date: 2017-02-19
host: x86_64-unknown-linux-gnu
release: 1.17.0-nightly
LLVM version: 3.9

[steveklabnik]

$ mkdir loL:
$ cd loL\:/
$ vim foo.rs # implement hello world
$ rustc foo.rs
$ ./foo
hello world

This looks like a bug in Cargo, not a bug in rustc. Would you mind refiling against https://github.com/rust-lang/cargo/ ? Thanks!

[minijackson]

Sure thing. For reference: rust-lang/cargo#3736