Fails to compile under newest nightly

[vorner]

Hello

When trying to compile with today's nightly ($ rustc --version rustc 1.36.0-nightly (d35181ad8 2019-05-20)), the compilation fails with:

error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::AsRef<_>`
   --> src/output/prometheus.rs:150:41
    |
150 |         match minreq::get(self.push_url.as_ref())
    |     

AFAIK this „needs to be more specific“ errors are actually allowed breakage/acceptable exception to the stability promise ☹. So I'm not sure if it's worth reporting to rustc (I'll try it anyway, but it might be worth to add some annotations in dipstick too, just in case).

[vorner]

Ah, seems to be this rust-lang/rust#60958