I've noticed several projects which use `cargo web` on CI recently started getting this error. Examples: - instant: https://app.circleci.com/pipelines/github/sebcrozet/instant/48/workflows/aab35ae0-7aa8-4f01-9657-0a5017799cb4/jobs/38 (might need login) - winit: https://github.com/rust-windowing/winit/runs/3464627699?check_suite_focus=true I think cargo-web is calling some tool which removed or renamed its `--profile` flag and cargo-web needs to be updated.