Target build history for wasm32-wasi-preview2

This contains the history of this target. Core is built with cargo build --release -Zbuild-std=core. This checks that codegen/linking of core works, but does not check whether std builds.

std is being built with cargo miri setup. If a target does not support std, the std column represents core/alloc. This checks that std builds (on targets that have it) but does not check whether codegen/linking works.