added 4 commits

April 25, 2019 11:42

With the latest rust compiler, we have new HashMap implementation
and stablized std::future.
Signed-off-by: Yilin Chen <sticnarf@gmail.com>

A lifetime bug is found by the new compiler in url-1.7.0,
upgrading it to 1.7.2 solves it. And another duplicated
import in our codebase is solved too.
Because the compiler version goes to 1.35.0, we can also
remove the range_contains feature gate.
Signed-off-by: Yilin Chen <sticnarf@gmail.com>

Signed-off-by: Yilin Chen <sticnarf@gmail.com>

…shMap to std::collect
Signed-off-by: Yilin Chen <sticnarf@gmail.com>

brson previously approved these changes Apr 25, 2019

The HashMap implementation in the latest Rust std points to hashbrown
which we are using now. So it's useless to add hashbrown to our
dependencies.
Signed-off-by: Yilin Chen <sticnarf@gmail.com>