Builder::command_line_flags misgenerates rust target's flag

[fitzgen]

It should add ["--rust-target", "1.19"] but only adds the second part.

See the command_line_flags method of Builder in src/lib.rs.

There are some tests that can be extended at the bottom of the file.

[highfive]

Hi! If you have any questions regarding this issue, feel free to make a comment here, or ask it in the #servo channel in IRC.

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[manaskarekar]

@highfive: assign me

[highfive]

Hey @manaskarekar! Thanks for your interest in working on this issue. It's now assigned to you!

[fitzgen]

Thanks!