Meanwhile while testing the brand new arm support on @travisci ...
Rust Language @rustlang
15 Oct 2019
Rustup 1.20.0 has been released, featuring lots of improvements including profiles and installing the latest nightly with available components! ๐ŸŽ‰๐ŸŽ‰๐ŸŽ‰ Check out the highlights in our blog post: blog.rust-lang.org/2019/10/1โ€ฆ
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@pietroalbini does it ring any bell?
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Unfortunately it looks like those platforms lack the components in the default profile :( I'll see what I can do for you.
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Replying to @dsilverstone @lu_zero_ @travisci @pietroalbini
Rustup 1.20.1 released this morning will force the initial toolchain install which should mitigate this issue for you. If you want more control then install with `--default-toolchain none` and then pick your profile, toolchain, and components more carefully afterwards.

Oct 16, 2019 ยท 7:04 AM UTC
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I apologise for the frustration. There'll be another tweak release later today too, but hopefully the fix it contains won't be affecting you. I tried to get the fix out as fast as I could, but I'm only human :D
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