set the TARGET envar for the stdsimd integration test
set the TARGET envar for the stdsimd integration test

SingingTree/rustfmt,aidancully/rust,graydon/rust,rust-lang/rustfmt,aidancully/rust,graydon/rust,graydon/rust,SingingTree/rustfmt,rust-lang/rustfmt,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust