I have a file (https://github.com/samuela/rustybox/blob/master/procps/ps.rs) that rust-analyzer complains about. Specifically, it's not happy with the ellipsis type here: https://github.com/samuela/rustybox/blob/master/procps/ps.rs#L18:

However, the file is syntactically correct and the project compiles fine as of all recent rust versions including

  nightly-x86_64-unknown-linux-gnu updated - rustc 1.43.0-nightly (c20d7eecb 2020-03-11) (from rustc 1.43.0-nightly (158127853 2020-03-10))