Rocket/core/codegen/tests/ui-fail-nightly/async-entry.stderr

error: attribute can only be applied to `async` functions
 --> $DIR/async-entry.rs:6:5
  |
6 |     #[rocket::main]
  |     ^^^^^^^^^^^^^^^
  |
note: this function must be `async`
 --> $DIR/async-entry.rs:7:5
  |
7 |     fn foo() { }
  |     ^^^^^^^^
  = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: attribute is typically applied to `main` function
  --> $DIR/async-entry.rs:12:5
   |
12 |     #[rocket::main]
   |     ^^^^^^^^^^^^^^^
   |
note: this function is not `main`
  --> $DIR/async-entry.rs:13:14
   |
13 |     async fn foo() { }
   |              ^^^
   = note: this warning originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: attribute can only be applied to `async` functions
  --> $DIR/async-entry.rs:18:5
   |
18 |     #[rocket::main]
   |     ^^^^^^^^^^^^^^^
   |
note: this function must be `async`
  --> $DIR/async-entry.rs:19:5
   |
19 |     fn main() {
   |     ^^^^^^^^^
   = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: attribute cannot be applied to `main` function
  --> $DIR/async-entry.rs:51:5
   |
51 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
   = note: this attribute generates a `main` function
note: this function cannot be `main`
  --> $DIR/async-entry.rs:52:8
   |
52 |     fn main() -> rocket::Rocket {
   |        ^^^^
   = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: attribute can only be applied to functions that return a value
  --> $DIR/async-entry.rs:58:5
   |
58 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
note: this function must return a value
  --> $DIR/async-entry.rs:59:5
   |
59 |     async fn rocket() {
   |     ^^^^^^^^^^^^^^^^^
   = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: attribute can only be applied to functions that return a value
  --> $DIR/async-entry.rs:66:5
   |
66 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
note: this function must return a value
  --> $DIR/async-entry.rs:67:5
   |
67 |     fn rocket() {
   |     ^^^^^^^^^^^
   = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: attribute cannot be applied to `main` function
  --> $DIR/async-entry.rs:81:5
   |
81 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
   = note: this attribute generates a `main` function
note: this function cannot be `main`
  --> $DIR/async-entry.rs:82:8
   |
82 |     fn main() -> &'static str {
   |        ^^^^
   = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: attribute cannot be applied to `main` function
  --> $DIR/async-entry.rs:89:5
   |
89 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
   = note: this attribute generates a `main` function
note: this function cannot be `main`
  --> $DIR/async-entry.rs:90:14
   |
90 |     async fn main() -> rocket::Rocket {
   |              ^^^^
   = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0728]: `await` is only allowed inside `async` functions and blocks
  --> $DIR/async-entry.rs:75:17
   |
74 |     fn rocket() -> rocket::Rocket {
   |        ------ this is not `async`
75 |         let _ = rocket::build().launch().await;
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks

error[E0308]: mismatched types
  --> $DIR/async-entry.rs:37:9
   |
37 |         rocket::build()
   |         ^^^^^^^^^^^^^^^ expected struct `std::string::String`, found struct `Rocket`

error[E0308]: mismatched types
  --> $DIR/async-entry.rs:46:9
   |
46 |         "hi".to_string()
   |         ^^^^^^^^^^^^^^^^ expected struct `Rocket`, found struct `std::string::String`

error[E0308]: mismatched types
  --> $DIR/async-entry.rs:26:21
   |
26 |       async fn main() {
   |                       ^ expected `()` because of default return type
   |  _____________________|
   | |
27 | |         rocket::build()
28 | |     }
   | |     ^- help: consider using a semicolon here: `;`
   | |_____|
   |       expected `()`, found struct `Rocket`

error[E0308]: mismatched types
  --> $DIR/async-entry.rs:35:26
   |
35 |     async fn rocket() -> String {
   |                          ^^^^^^
   |                          |
   |                          expected struct `Rocket`, found struct `std::string::String`
   |                          expected due to this

error[E0277]: `main` has invalid return type `Rocket`
  --> $DIR/async-entry.rs:96:20
   |
96 | async fn main() -> rocket::Rocket {
   |                    ^^^^^^^^^^^^^^ `main` can only return types that implement `Termination`
   |
   = help: consider using `()`, or a `Result`