src/test/ui/generator/print/generator-print-verbose-1.stderr

   1 error: generator cannot be sent between threads safely
   2   --> $DIR/generator-print-verbose-1.rs:37:5
   3    |
   4 LL | fn require_send(_: impl Send) {}
   5    |                         ---- required by this bound in `require_send`
   6 ...
   7 LL |     require_send(send_gen);
   8    |     ^^^^^^^^^^^^ generator is not `Send`
   9    |
  10    = help: the trait `Sync` is not implemented for `RefCell<i32>`
  11 note: generator is not `Send` as this value is used across a yield
  12   --> $DIR/generator-print-verbose-1.rs:35:9
  13    |
  14 LL |         let _non_send_gen = make_non_send_generator();
  15    |             ------------- has type `Opaque(DefId(0:34 ~ generator_print_verbose_1[70c9]::make_non_send_generator::{opaque#0}), [])` which is not `Send`
  16 LL |         yield;
  17    |         ^^^^^ yield occurs here, with `_non_send_gen` maybe used later
  18 LL |     };
  19    |     - `_non_send_gen` is later dropped here
  20
  21 error[E0277]: `RefCell<i32>` cannot be shared between threads safely
  22   --> $DIR/generator-print-verbose-1.rs:56:5
  23    |
  24 LL | fn require_send(_: impl Send) {}
  25    |                         ---- required by this bound in `require_send`
  26 ...
  27 LL |     require_send(send_gen);
  28    |     ^^^^^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
  29    |
  30    = help: the trait `Sync` is not implemented for `RefCell<i32>`
  31    = note: required because of the requirements on the impl of `Send` for `Arc<RefCell<i32>>`
  32    = note: required because it appears within the type `[make_gen2<Arc<RefCell<i32>>>::{closure#0} upvar_tys=(Arc<RefCell<i32>>) {()}]`
  33    = note: required because it appears within the type `Opaque(DefId(0:39 ~ generator_print_verbose_1[70c9]::make_gen2::{opaque#0}), [std::sync::Arc<std::cell::RefCell<i32>>])`
  34    = note: required because it appears within the type `Opaque(DefId(0:42 ~ generator_print_verbose_1[70c9]::make_non_send_generator2::{opaque#0}), [])`
  35    = note: required because it appears within the type `{Opaque(DefId(0:42 ~ generator_print_verbose_1[70c9]::make_non_send_generator2::{opaque#0}), []), ()}`
  36    = note: required because it appears within the type `[test2::{closure#0} upvar_tys=() {Opaque(DefId(0:42 ~ generator_print_verbose_1[70c9]::make_non_send_generator2::{opaque#0}), []), ()}]`
  37
  38 error: aborting due to 2 previous errors
  39
  40 For more information about this error, try `rustc --explain E0277`.