rustc bug

[edfloreshz]

Code

#![feature(decl_macro, proc_macro_hygiene)]

extern crate rocket;
extern crate reqwest;

use rocket::http::RawStr;
use rocket::*;


use std::time::Duration;
use reqwest::blocking::ClientBuilder;


#[get("/")]
fn index() -> &'static str {
    "Navigate to http://localhost:8000/check/<GitHub username>"
}

#[get("/check/<user>")]
fn check(user: &RawStr) -> Result<String, Box<dyn std::error::Error>> {
    let request_url = format!("https://api.github.com/users/{}", user);
    
    let timeout = Duration::new(5, 0);
    let client = ClientBuilder::new().timeout(timeout).build()?;
    let response = client.head(&request_url).send()?;

    if response.status().is_success() {
        Ok(format!("{} is a user!", user))
    } else {
        Ok(format!("{} is not a user!", user))
    }
}

fn main() {
    rocket::ignite().mount("/", routes![index, check]).launch();
}

Meta

rustc --version --verbose:

rustc 1.53.0-nightly (673d0db5e 2021-03-23)
binary: rustc
commit-hash: 673d0db5e393e9c64897005b470bfeb6d5aec61b
commit-date: 2021-03-23
host: x86_64-pc-windows-msvc
release: 1.53.0-nightly
LLVM version: 12.0.0

Error output

thread 'rustc' panicked at 'found unstable fingerprints for predicates_of(core[f48f]::convert::From): GenericPredicates { parent: None, predicates: [(Binder(TraitPredicate(<Self as std::marker::Sized>)), C:\Users\user\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\convert\mod.rs:365:20: 365:25 (#0)), (Binder(TraitPredicate(<T as std::marker::Sized>)), C:\Users\user\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\convert\mod.rs:365:16: 365:17 (#0)), (Binder(TraitPredicate(<Self 
as std::convert::From<T>>)), C:\Users\user\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\convert\mod.rs:365:1: 365:25 (#0))] }', /rustc/673d0db5e393e9c64897005b470bfeb6d5aec61b\compiler\rustc_query_system\src\query\plumbing.rs:593:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.53.0-nightly (673d0db5e 2021-03-23) running on x86_64-pc-windows-msvc

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type bin

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [predicates_of] computing predicates of `std::convert::From`
#1 [typeck] type-checking `check`
end of query stack
error: could not compile `rocket-app`

Backtrace

Running `rustc --crate-name rocket_app --edition=2018 src\main.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=b3bb01611ddf2544 --out-dir "C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps" -C "incremental=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\incremental" -L "dependency=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps" --extern "reqwest=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps\libreqwest-3e1f2b0cf47b967b.rlib" --extern "rocket=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps\librocket-64cb0b69549258b9.rlib" --extern "rocket_codegen=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps\rocket_codegen-1838ff5816fa3924.dll"`
thread 'rustc' panicked at 'found unstable fingerprints for predicates_of(core[f48f]::convert::From): GenericPredicates { parent: None, predicates: [(Binder(TraitPredicate(<Self as std::marker::Sized>)), C:\Users\Secretaria Educacion\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\convert\mod.rs:365:20: 365:25 (#0)), (Binder(TraitPredicate(<T as std::marker::Sized>)), C:\Users\Secretaria Educacion\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\convert\mod.rs:365:16: 365:17 (#0)), (Binder(TraitPredicate(<Self as std::convert::From<T>>)), C:\Users\Secretaria Educacion\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\convert\mod.rs:365:1: 365:25 (#0))] }', /rustc/673d0db5e393e9c64897005b470bfeb6d5aec61b\compiler\rustc_query_system\src\query\plumbing.rs:593:5
stack backtrace:
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.53.0-nightly (673d0db5e 2021-03-23) running on x86_64-pc-windows-msvc

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type bin

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [predicates_of] computing predicates of `std::convert::From`
#1 [typeck] type-checking `check`
#2 [typeck_item_bodies] type-checking all item bodies
#3 [analysis] running analysis passes on this crate
end of query stack
error: could not compile `rocket-app`

Caused by:
  process didn't exit successfully: `rustc --crate-name rocket_app --edition=2018 src\main.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=b3bb01611ddf2544 --out-dir "C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps" -C "incremental=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\incremental" -L "dependency=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps" --extern "reqwest=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps\libreqwest-3e1f2b0cf47b967b.rlib" --extern "rocket=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps\librocket-64cb0b69549258b9.rlib" --extern "rocket_codegen=C:\Users\Secretaria Educacion\Documents\Developer\rust-backend\rocket-app\target\debug\deps\rocket_codegen-1838ff5816fa3924.dll"` (exit code: 101)

[fee1-dead]

Try using the latest nightly. (see this)

@rustbot label: A-incr-comp

[edfloreshz]

Fixed!