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145: Update qemu.md r=jamesmunns a=flip111

i didn't know what this was

Co-authored-by: flip111 <flip101@gmail.com>
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2019-02-17 06:02:35 +00:00
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@@ -133,7 +133,7 @@ that'd be `#[entry]`.
[`cortex-m-rt`]: https://crates.io/crates/cortex-m-rt
`fn main() -> !`. Our program will be the *only* process running on the target
hardware so we don't want it to end! We use a divergent function (the `-> !`
hardware so we don't want it to end! We use a [divergent function](https://doc.rust-lang.org/rust-by-example/fn/diverging.html) (the `-> !`
bit in the function signature) to ensure at compile time that'll be the case.
### Cross compiling