can not compile rocket example #83741
Description
[dependencies]
rocket = "0.4.7"
Code
#![feature(proc_macro_hygiene, decl_macro)]
#[macro_use] extern crate rocket;
#[get("/")]
fn index() -> &'static str {
"Hello, world!"
}
fn main() {
rocket::ignite().mount("/", routes![index]).launch();
}Meta
rustc --version --verbose:
rustc 1.53.0-nightly (07e0e2ec2 2021-03-24)
binary: rustc
commit-hash: 07e0e2ec268c140e607e1ac7f49f145612d0f597
commit-date: 2021-03-24
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]::ops::function::Fn): GenericPredicates { parent: None, predicates: [(Binder(TraitPredicate(<Self as std::ops::FnMut<Args>>)), D:\Users\80207865\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:21: 67:32 (#0)), (Binder(TraitPredicate(<Args as std::marker::Sized>)), D:\Users\80207865\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:14: 67:18 (#0)), (Binder(TraitPredicate(<Self as std::ops::Fn<Args>>)), D:\Users\80207865\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:1: 67:32 (#0))] }', /rust/07e0e2ec268c140e607e1ac7f49f145612d0f597\compiler\rustc_query_system\src\query\plumbing.rs:593:5
stack backtrace:
Backtrace
Compiling rocket_helloworld v0.1.0 (D:\Users\80207865\IdeaProjects\rocket_helloworld)
thread 'rustc' panicked at 'found unstable fingerprints for predicates_of(core[f48f]::ops::function::Fn): GenericPredicates { parent: None, predicates: [(Binder(TraitPredicate(<Self as std::ops::FnMut<Args>>)), D:\Users\80207865\.ru
stup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:21: 67:32 (#0)), (Binder(TraitPredicate(<Args as std::marker::Sized>)), D:\Users\80207865\.rustup\toolchains\nightly-x86_64-pc-w
indows-msvc\lib/rustlib/src/rust\library\core\src\ops\function.rs:67:14: 67:18 (#0)), (Binder(TraitPredicate(<Self as std::ops::Fn<Args>>)), D:\Users\80207865\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib/rustlib/src/rust\li
brary\core\src\ops\function.rs:67:1: 67:32 (#0))] }', /rustc/07e0e2ec268c140e607e1ac7f49f145612d0f597\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 (07e0e2ec2 2021-03-24) 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::ops::Fn`
#1 [vtable_methods] finding all methods for trait std::ops::Fn
#2 [collect_and_partition_mono_items] collect_and_partition_mono_items
end of query stack
error: could not compile `rocket_helloworld`
To learn more, run the command again with --verbose.