ovmf-prebuilt v0.1.0-alpha.1 doesn't compile

The result i get when I compile with cargo 1.70.0-nightly (15d090969 2023-03-21) is listed below. What am I missing?
I'm following the migration guide from 0.9.

Compiling ovmf-prebuilt v0.1.0-alpha.1
error[E0463]: can't find crate for std
|
= note: the x86_64-unknown-none target may not support the standard library
= note: std is required by ovmf_prebuilt because it does not declare #![no_std]
= help: consider building the standard library from source with cargo build -Zbuild-std

error[E0463]: can't find crate for std
--> /home/zingo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ovmf-prebuilt-0.1.0-alpha.1/src/lib.rs:1:5
|
1 | use std::path::{PathBuf, Path};
| ^^^ can't find crate
|
= note: the x86_64-unknown-none target may not support the standard library
= help: consider building the standard library from source with cargo build -Zbuild-std

error: cannot find macro assert in this scope
--> /home/zingo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ovmf-prebuilt-0.1.0-alpha.1/src/lib.rs:5:5
|
5 | assert!(path.exists(), "OVMF-pure-efi.fd does not exist");
| ^^^^^^
|
= help: consider importing this macro:
core::assert

error: cannot find macro env in this scope
--> /home/zingo/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ovmf-prebuilt-0.1.0-alpha.1/src/lib.rs:4:26
|
4 | let path = Path::new(env!("CARGO_MANIFEST_DIR")).join("OVMF-pure-efi.fd");
| ^^^
|
= help: consider importing this macro:
core::env

Start with the 0.9 migration guide and the installed ovmf-prebuilt src/lib.rs shown in the compiler output, then reproduce the build using the reported nightly toolchain and x86_64-unknown-none target. Determine whether the migration instructions or the crate's standard-library assumptions are responsible, and document or verify a working build outcome.