cargo run no longer passes a stdin handle to child. #2530
Description
Until today I could run cargo run --release against rustup to kick off the interactive installer, which reads a byte from stdin for confirmation. As of today when I do this rustup exits with an error. Calling std::stdin().lock().lines().next() returns None where it used to return Some.
Working rustc / cargo:
rustc 1.9.0-nightly (98f0a9128 2016-03-23)
cargo 0.10.0-nightly (61ad6a0 2016-03-22)
Failing rustc / cargo:
rustc 1.9.0-nightly (d7a71687e 2016-03-24)
cargo 0.10.0-nightly (4e6434d 2016-03-24)