technocreatives
Drop `memchr` dependency
While memchr has served us well, it finally bumped its MSRV substantially such that its no longer really practical in a particularly MSRV-constrained environment (e.g. when building on machines with validated toolchains or Debian stable).
Luckily, its barely used, and not really worth retaining. A trivial scan should be something LLVM can optimize at least somewhat reasonably.
Many more things with this crate are broken.
The CI runs the following for no-std tests:
/home/runner/.cargo/bin/cargo test --tests --no-default-features --features nightly
If you removes the extra --tests flag, a large number of other tests fail. This is independent of the changes in this PR.
A potential fix for the macos-latest, 1.47 build could be to change the CI to only build 1.47 with a fixed older version of macOS.
The fixes for the <platform>-latest, latest builds are discussed in https://github.com/technocreatives/core2/pull/21.
