target-feature x87 will soon be removed

[xangelix]

warning: target feature x87 cannot be toggled with -Ctarget-feature: unsound on hard-float targets because it changes float ABI
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= note: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #116344 rust-lang/rust#116344

[ronnychevalier]

I just pushed 83135b7 to fix this.
But it is not part of a release yet.

[xangelix]

Thanks!