S0150: invalid effect result binding

Generated from rellum-diagnostics/src/db.rs.

Explanation

The <- binding operator sequences an awaitable effect inside an effect body and binds its result before the body continues. It is not a pure local binding and it cannot bind ingress, request, or Unit-returning output effects.

Common causes

using <- outside an effect body
binding a pure function call with <-
trying to bind print! or a top-level request effect with <-

Canonical fixes

use = for pure local bindings

Before:

value <- parse(input)

After:

value = parse(input)

use output effects as standalone calls