Hang in rust installation

[Jack]

Hi, everyone:

I tried to install Rust on my laptop which has upgraded to macOS Sierra.

And the installation hanged at the configure stage.

I tried to run the configure myself, and the message is this:

    configure: looking for target specific programs
    configure:
    configure: CFG_ADB              :=3D
    rustc(66164,0x7fffa22c53c0) malloc: *** malloc_zone_unregister() failed=
 for 0x7fffa22bb000

This error is on rust's site(check this: https://github.com/rust-lang/rust/=
issues/34674)

And I think they've fix this problem in the most recent dev version.

Is there anyway to fix this in macports?

-- 
Thanks
--------------------
Jack
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