Passed value missing or unexpected in 3.0.0-beta.2

[crowlKats]

Trying to figure out what i am doing wrong:

let app = App::new("test").arg(
  Arg::new("foo")
    .long("foo")
    .takes_value(true)
    .multiple(false),
);

println!("{}", app.get_matches().value_of("foo").unwrap());

2.33

$ test --foo=bar
"bar"

$ test --foo bar
"bar"

3.0.0-beta.2

$ test --foo=bar
thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', src/main.rs:11:52
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

$ test --foo bar
error: Found argument 'bar' which wasn't expected, or isn't valid in this context

If you tried to supply `bar` as a PATTERN use `-- bar`

USAGE:
    untitled [FLAGS]

For more information try --help

I assume there was a behaviour change, but this seems weird to me though. Could someone give me some insight?

[pksunkara]

Can you please try with master?

[crowlKats]

same thing happens

[pksunkara]

Can you try with removing multiple(false)?

[crowlKats]

that does work.

[pksunkara]

Can you please create an issue detailing the above and that this needs to be corrected? Appreciate it, thanks.