[Pkg-rust-maintainers] Build fails with "found two different crates with name `std`"

[Luca BRUNO]

On Friday, February 16, 2018 1:46:22 PM UTC John Paul Adrian Glaubitz wrote:

> error[E0523]: found two different crates with name `std` that are not
> distinguished by differing `-C metadata`. This will result in symbol
> conflicts between the two.

> Anyone knows where the problem might be? Is Cargo too old?

It looks like it is picking multiple libstd from your FS, do you perhaps still 
have the previous libstd-rust-dev installed?
Are you re-bootstrapping this from "pkg.rustc.dlstage0" build profile or from 
a previous stage2?

Ciao, Luca

-- 
"If you build a wall, think of what you leave outside it" - Italo Calvino
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