error: type annotations required: cannot resolve `<f32 as core::ops::Add<_>>::Output == f32` [E0284]

[andersk]

With today’s rust-nightly (rust-lang/rust@6cf3b0b), rand no longer builds. It was fine in yesterday’s nightly (rust-lang/rust@d8be84e), so I’m guessing the difference is due to rust-lang/rust#23673.

$ rustc --version
rustc 1.0.0-dev (built 2015-03-31)
$ cargo build
    Updating registry `https://github.com/rust-lang/crates.io-index`
   Compiling libc v0.1.4
   Compiling log v0.3.1
   Compiling rand v0.3.3 (file:///home/anders/rust/rand)
src/distributions/range.rs:156:17: 156:44 error: type annotations required: cannot resolve `<f32 as core::ops::Add<_>>::Output == f32` [E0284]
src/distributions/range.rs:156                 r.low + r.range * rng.gen()
                                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~
src/distributions/range.rs:145:1: 160:2 note: in expansion of float_impl!
src/distributions/range.rs:162:1: 162:20 note: expansion site
error: aborting due to previous error
Could not compile `rand`.

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