Reject `?Trait` bounds in various places where we unconditionally warned since 1.0 fixes #135730 fixes #135809 Also a breaking change, so let's see what crater says. This has been an unconditional warning since *before* 1.0
xform
structurally_normalize
structurally_normalize_ty
#[macro_use] extern crate tracing
rustc_hir_analysis
visit_x_unambig
tcx.ensure()
tcx.ensure_ok()
extended_varargs_abi_support