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:52:5
   |
52 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
   = note: this attribute generates a `main` function
note: this function cannot be `main`
  --> $DIR/async-entry.rs:53:8
   |
53 |     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:59:5
   |
59 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
note: this function must return a value
  --> $DIR/async-entry.rs:60:5
   |
60 |     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:67:5
   |
67 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
note: this function must return a value
  --> $DIR/async-entry.rs:68:5
   |
68 |     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:82:5
   |
82 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
   = note: this attribute generates a `main` function
note: this function cannot be `main`
  --> $DIR/async-entry.rs:83:8
   |
83 |     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:90:5
   |
90 |     #[rocket::launch]
   |     ^^^^^^^^^^^^^^^^^
   |
   = note: this attribute generates a `main` function
note: this function cannot be `main`
  --> $DIR/async-entry.rs:91:14
   |
91 |     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:76:17
   |
75 |     fn rocket() -> rocket::Rocket {
   |        ------ this is not `async`
76 |         let _ = rocket::ignite().launch().await;
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks

error[E0308]: mismatched types
  --> $DIR/async-entry.rs:38:9
   |
38 |         rocket::ignite()
   |         ^^^^^^^^^^^^^^^^ expected struct `std::string::String`, found struct `rocket::Rocket`

error[E0308]: mismatched types
  --> $DIR/async-entry.rs:47:9
   |
47 |         "hi".to_string()
   |         ^^^^^^^^^^^^^^^^ expected struct `rocket::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 | |
28 | |         rocket::ignite()
29 | |     }
   | |     ^- help: try adding a semicolon: `;`
   | |_____|
   |       expected `()`, found struct `rocket::Rocket`

error[E0308]: mismatched types
  --> $DIR/async-entry.rs:36:26
   |
36 |     async fn rocket() -> String {
   |                          ^^^^^^
   |                          |
   |                          expected struct `rocket::Rocket`, found struct `std::string::String`
   |                          expected due to this

error[E0277]: `main` has invalid return type `rocket::Rocket`
  --> $DIR/async-entry.rs:97:20
   |
97 | async fn main() -> rocket::Rocket {
   |                    ^^^^^^^^^^^^^^ `main` can only return types that implement `std::process::Termination`
   |
   = help: consider using `()`, or a `Result`