Documentation tests that are not preceded by a blank line are not run

[shepmaster]

To reproduce

Create a new project and place this as src/lib.rs

/// This doesn't get run:
/// ```
/// assert!(0 == 1);
/// ```
///
/// This will:
///
/// ```
/// assert!(1 == 2);
/// ```
fn one() {}

Run cargo test

What I expected

To see two failed tests.

What actually happened

Only the second test is run.

Meta

$ cargo --version
cargo 0.11.0-nightly (259324c 2016-05-20)
$ rustc --version --verbose
rustc 1.10.0 (cfcb716cf 2016-07-03)
binary: rustc
commit-hash: cfcb716cf0961a7e3a4eceac828d94805cf8140b
commit-date: 2016-07-03
host: x86_64-apple-darwin
release: 1.10.0

[TimNN]

I believe this is a duplicate of #28712.

[shepmaster]

@TimNN quite right, thank you for being better at searching than I am!