compiler-builtins-smoke-test fails with: no `_eqf` in the root

[bvinc]

$ cargo +nightly bench --all
   Compiling cb v0.1.0 (/home/brain/src/libm/crates/compiler-builtins-smoke-test)
   Compiling libm v0.2.1 (/home/brain/src/libm)
error[E0432]: unresolved import `crate::_eqf`
   --> crates/compiler-builtins-smoke-test/src/../../../src/math/sincosf.rs:128:9
    |
128 |     use crate::_eqf;
    |         ^^^^^^^^^^^ no `_eqf` in the root

This is caused by:

$ cat crates/compiler-builtins-smoke-test/src/lib.rs 
//! Fake compiler-builtins crate
//!
//! This is used to test that we can source import `libm` into the compiler-builtins crate.

#![allow(dead_code)]
#![no_std]

#[path = "../../../src/math/mod.rs"]
mod libm;

Should _eqf move to a test module inside of the math module?