src/test/ui/span/drop-location-span-error-rust-2021-incompatible-closure-captures-93117.stderr

   1 error: this file contains an unclosed delimiter
   2   --> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-93117.rs:18:53
   3    |
   4 LL | trait C{async fn new(val: T) {}
   5    |        - unclosed delimiter
   6 ...
   7 LL |
   8    |                                                     ^
   9
  10 error[E0670]: `async fn` is not permitted in Rust 2015
  11   --> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-93117.rs:6:5
  12    |
  13 LL |     async fn create(path: impl AsRef<std::path::Path>)  {
  14    |     ^^^^^ to use `async fn`, switch to Rust 2018 or later
  15    |
  16    = help: pass `--edition 2021` to `rustc`
  17    = note: for more on editions, read https://doc.rust-lang.org/edition-guide
  18
  19 error[E0670]: `async fn` is not permitted in Rust 2015
  20   --> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-93117.rs:13:9
  21    |
  22 LL | trait C{async fn new(val: T) {}
  23    |         ^^^^^ to use `async fn`, switch to Rust 2018 or later
  24    |
  25    = help: pass `--edition 2021` to `rustc`
  26    = note: for more on editions, read https://doc.rust-lang.org/edition-guide
  27
  28 error[E0706]: functions in traits cannot be declared `async`
  29   --> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-93117.rs:13:9
  30    |
  31 LL | trait C{async fn new(val: T) {}
  32    |         -----^^^^^^^^^^^^^^^^^^
  33    |         |
  34    |         `async` because of this
  35    |
  36    = note: `async` trait functions are not currently supported
  37    = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait
  38
  39 error[E0423]: expected function, found module `crate`
  40   --> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-93117.rs:9:5
  41    |
  42 LL |     crate(move || {} ).await
  43    |     ^^^^^ not a function
  44
  45 error[E0412]: cannot find type `T` in this scope
  46   --> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-93117.rs:13:27
  47    |
  48 LL | pub struct A {}
  49    | ------------ similarly named struct `A` defined here
  50 ...
  51 LL | trait C{async fn new(val: T) {}
  52    |                           ^ help: a struct with a similar name exists: `A`
  53
  54 warning: changes to closure capture in Rust 2021 will affect drop order
  55   --> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-93117.rs:6:57
  56    |
  57 LL |       async fn create(path: impl AsRef<std::path::Path>)  {
  58    |  _____________________----_____________________________-__^
  59    | |                     |                                |
  60    | |                     |                                in Rust 2018, `path` is dropped here along with the closure, but in Rust 2021 `path` is not part of the closure
  61    | |                     in Rust 2018, this causes the closure to capture `path`, but in Rust 2021, it has no effect
  62 LL | |
  63 LL | |     ;
  64 LL | |     crate(move || {} ).await
  65 LL | |     }
  66    | |_____^
  67    |
  68    = note: requested on the command line with `-W rust-2021-incompatible-closure-captures`
  69    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/disjoint-capture-in-closures.html>
  70 help: add a dummy let to cause `path` to be fully captured
  71    |
  72 LL |     async fn create(path: impl AsRef<std::path::Path>)  { let _ = &path;
  73    |                                                           ++++++++++++++
  74
  75 warning: changes to closure capture in Rust 2021 will affect drop order
  76   --> $DIR/drop-location-span-error-rust-2021-incompatible-closure-captures-93117.rs:13:30
  77    |
  78 LL | trait C{async fn new(val: T) {}
  79    |                      ---   - ^^
  80    |                      |     |
  81    |                      |     in Rust 2018, `val` is dropped here along with the closure, but in Rust 2021 `val` is not part of the closure
  82    |                      in Rust 2018, this causes the closure to capture `val`, but in Rust 2021, it has no effect
  83    |
  84    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/disjoint-capture-in-closures.html>
  85 help: add a dummy let to cause `val` to be fully captured
  86    |
  87 LL | trait C{async fn new(val: T) { let _ = &val;}
  88    |                                +++++++++++++
  89
  90 error: aborting due to 6 previous errors; 2 warnings emitted
  91
  92 Some errors have detailed explanations: E0412, E0423, E0670, E0706.
  93 For more information about an error, try `rustc --explain E0412`.