Doc tests not run with cargo test TESTNAME on stable (1.35.0) #6981
Description
The contents of doc/src/lib.rs:
/// ```rust
/// let _ = {};
/// ```
pub fn foo() {}Running cargo test foo, doc tests matching the pattern are not run for stable 1.35.0, but they run fine with 1.34.2.
$ cargo version
cargo 1.35.0 (6f3e9c367 2019-04-04)
$ cargo test foo
Finished dev [unoptimized + debuginfo] target(s) in 0.15s
Running target/debug/deps/doc-86434eb559164ed5
running 0 tests
test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
$ cargo +1.34.2 test foo
Finished dev [unoptimized + debuginfo] target(s) in 0.16s
Running target/debug/deps/doc-f8e8caa996ffb988
running 0 tests
test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Doc-tests doc
running 1 test
test src/lib.rs - foo (line 1) ... ok
test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out