error[E0609]: no field `opts` on type `TyCtxt<'tcx>`
  --> $DIR/field-access-considering-privacy.rs:29:13
   |
LL |         tcx.opts;
   |             ^^^^ unknown field
   |
help: one of the expressions' fields has a field of the same name
   |
LL |         tcx.sess.opts;
   |             +++++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0609`.