tests/ui/chalkify/bugs/async.stderr

   1 error[E0277]: `[async fn body@$DIR/async.rs:23:29: 25:2]` is not a future
   2   --> $DIR/async.rs:23:29
   3    |
   4 LL |   async fn foo(x: u32) -> u32 {
   5    |  _____________________________-
   6 LL | |     x
   7 LL | | }
   8    | | ^
   9    | | |
  10    | |_`[async fn body@$DIR/async.rs:23:29: 25:2]` is not a future
  11    |   required by a bound introduced by this call
  12    |
  13    = help: the trait `Future` is not implemented for `[async fn body@$DIR/async.rs:23:29: 25:2]`
  14    = note: [async fn body@$DIR/async.rs:23:29: 25:2] must be a future or must implement `IntoFuture` to be awaited
  15 note: required by a bound in `identity_future`
  16   --> $SRC_DIR/core/src/future/mod.rs:LL:COL
  17
  18 error[E0277]: the size for values of type `<[async fn body@$DIR/async.rs:23:29: 25:2] as Future>::Output` cannot be known at compilation time
  19   --> $DIR/async.rs:23:29
  20    |
  21 LL |   async fn foo(x: u32) -> u32 {
  22    |  _____________________________^
  23 LL | |     x
  24 LL | | }
  25    | |_^ doesn't have a size known at compile-time
  26    |
  27    = help: the trait `Sized` is not implemented for `<[async fn body@$DIR/async.rs:23:29: 25:2] as Future>::Output`
  28 note: required by a bound in `identity_future`
  29   --> $SRC_DIR/core/src/future/mod.rs:LL:COL
  30
  31 error[E0277]: `[async fn body@$DIR/async.rs:23:29: 25:2]` is not a future
  32   --> $DIR/async.rs:23:25
  33    |
  34 LL | async fn foo(x: u32) -> u32 {
  35    |                         ^^^ `[async fn body@$DIR/async.rs:23:29: 25:2]` is not a future
  36    |
  37    = help: the trait `Future` is not implemented for `[async fn body@$DIR/async.rs:23:29: 25:2]`
  38    = note: [async fn body@$DIR/async.rs:23:29: 25:2] must be a future or must implement `IntoFuture` to be awaited
  39
  40 error: internal compiler error: projection clauses should be implied from elsewhere. obligation: `Obligation(predicate=Binder(ProjectionPredicate(AliasTy { substs: [[async fn body@$DIR/async.rs:23:29: 25:2]], def_id: ...) }, Term::Ty(u32)), []), depth=0)`
  41   --> $DIR/async.rs:23:25
  42    |
  43 LL | async fn foo(x: u32) -> u32 {
  44    |                         ^^^query stack during panic:
  45 #0 [typeck] type-checking `foo`
  46 #1 [thir_body] building THIR for `foo`
  47 #2 [mir_built] building MIR for `foo`
  48 #3 [unsafety_check_result] unsafety-checking `foo`
  49 #4 [mir_const] preparing `foo` for borrow checking
  50 #5 [mir_promoted] processing MIR for `foo`
  51 #6 [mir_borrowck] borrow-checking `foo`
  52 #7 [type_of] computing type of `foo::{opaque#0}`
  53 #8 [check_mod_item_types] checking item types in top-level module
  54 #9 [analysis] running analysis passes on this crate
  55 end of query stack
  56 error: aborting due to 4 previous errors
  57
  58 For more information about this error, try `rustc --explain E0277`.