Experienced compiler error with simple test project

[Folling]

Code

Just the example code from the SDL2 crate

extern crate gl;
extern crate sdl2;

use sdl2::event::Event;
use sdl2::keyboard::Keycode;
use sdl2::video::GLProfile;

fn main() {
    let sdl_context = sdl2::init().unwrap();
    let video_subsystem = sdl_context.video().unwrap();

    let gl_attr = video_subsystem.gl_attr();
    gl_attr.set_context_profile(GLProfile::Core);
    gl_attr.set_context_version(3, 3);

    let window = video_subsystem
        .window("Window", 800, 600)
        .resizable()
        .opengl()
        .build()
        .unwrap();

    // Unlike the other example above, nobody created a context for your window, so you need to create one.
    let ctx = window.gl_create_context().unwrap();
    gl::load_with(|name| video_subsystem.gl_get_proc_address(name) as *const _);

    debug_assert_eq!(gl_attr.context_profile(), GLProfile::Core);
    debug_assert_eq!(gl_attr.context_version(), (3, 3));

    let mut event_pump = sdl_context.event_pump().unwrap();

    'running: loop {
        unsafe {
            gl::ClearColor(0.6, 0.0, 0.8, 1.0);
            gl::Clear(gl::COLOR_BUFFER_BIT);
        }

        window.gl_swap_window();
        for event in event_pump.poll_iter() {
            match event {
                Event::Quit { .. }
                | Event::KeyDown {
                    keycode: Some(Keycode::Escape),
                    ..
                } => break 'running,
                _ => {}
            }
        }
        ::std::thread::sleep(::std::time::Duration::new(0, 1_000_000_000u32 / 60));
    }
}

Meta

rustc --version --verbose:

rustc 1.52.0-nightly (1705a7d64 2021-03-18)
binary: rustc
commit-hash: 1705a7d64b833d1c4b69958b0627bd054e6d764b
commit-date: 2021-03-18
host: x86_64-unknown-linux-gnu
release: 1.52.0-nightly
LLVM version: 12.0.0

-- It does run on stable, just not on nightly

Error output

thread 'rustc' panicked at 'found unstable fingerprints for predicates_of(core[3998]::cmp::PartialEq)', /rustc/1705a7d64b833d1c4b69958b0627bd054e6d764b/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 1.52.0-nightly (1705a7d64 2021-03-18) running on x86_64-unknown-linux-gnu

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::cmp::PartialEq`
#1 [typeck] type-checking `main`
end of query stack
error: could not compile `graphite`

Backtrace

``` 0: rust_begin_unwind at /rustc/1705a7d64b833d1c4b69958b0627bd054e6d764b/library/std/src/panicking.rs:493:5 1: std::panicking::begin_panic_fmt at /rustc/1705a7d64b833d1c4b69958b0627bd054e6d764b/library/std/src/panicking.rs:435:5 2: rustc_query_system::query::plumbing::incremental_verify_ich 3: rustc_query_system::query::plumbing::load_from_disk_and_cache_in_memory 4: rustc_query_system::query::plumbing::get_query_impl 5: ::predicates_of 6: rustc_middle::ty::generics::GenericPredicates::instantiate_into 7: rustc_middle::ty::generics::GenericPredicates::instantiate 8: rustc_typeck::check::method::::lookup_method_in_trait 9: rustc_typeck::check::op::::lookup_op_method 10: rustc_typeck::check::op::::check_overloaded_binop 11: rustc_typeck::check::op::::check_binop 12: rustc_typeck::check::expr::::check_expr_with_expectation 13: rustc_typeck::check::expr::::check_expr_kind 14: rustc_typeck::check::expr::::check_expr_with_expectation 15: rustc_typeck::check::expr::::check_expr_kind 16: rustc_typeck::check::expr::::check_expr_with_expectation 17: rustc_typeck::check::fn_ctxt::checks::::check_block_with_expected 18: rustc_typeck::check::expr::::check_expr_with_expectation 19: rustc_typeck::check::_match::::check_match 20: rustc_typeck::check::expr::::check_expr_kind 21: rustc_typeck::check::expr::::check_expr_with_expectation 22: rustc_typeck::check::fn_ctxt::checks::::check_block_with_expected 23: rustc_typeck::check::expr::::check_expr_with_expectation 24: rustc_typeck::check::fn_ctxt::checks::::check_stmt 25: rustc_typeck::check::fn_ctxt::checks::::check_block_with_expected 26: rustc_typeck::check::expr::::check_expr_with_expectation 27: rustc_typeck::check::expr::::check_expr_kind 28: rustc_typeck::check::expr::::check_expr_with_expectation 29: rustc_typeck::check::fn_ctxt::checks::::check_stmt 30: rustc_typeck::check::fn_ctxt::checks::::check_block_with_expected 31: rustc_typeck::check::expr::::check_expr_with_expectation 32: rustc_typeck::check::expr::::check_return_expr 33: rustc_typeck::check::check::check_fn 34: rustc_infer::infer::InferCtxtBuilder::enter 35: rustc_typeck::check::typeck 36: rustc_middle::dep_graph::::with_deps 37: rustc_query_system::dep_graph::graph::DepGraph::with_task_impl 38: rustc_query_system::query::plumbing::force_query_with_job 39: rustc_query_system::query::plumbing::get_query_impl 40: ::typeck 41: rustc_middle::ty::::par_body_owners 42: rustc_typeck::check::typeck_item_bodies 43: rustc_middle::dep_graph::::with_deps 44: rustc_query_system::dep_graph::graph::DepGraph::with_task_impl 45: rustc_data_structures::stack::ensure_sufficient_stack 46: rustc_query_system::query::plumbing::force_query_with_job 47: rustc_query_system::query::plumbing::get_query_impl 48: ::typeck_item_bodies 49: rustc_session::utils::::time 50: rustc_typeck::check_crate 51: rustc_interface::passes::analysis 52: rustc_middle::dep_graph::::with_deps 53: rustc_query_system::dep_graph::graph::DepGraph::with_task_impl 54: rustc_data_structures::stack::ensure_sufficient_stack 55: rustc_query_system::query::plumbing::force_query_with_job 56: rustc_query_system::query::plumbing::get_query_impl 57: ::analysis 58: rustc_interface::passes::QueryContext::enter 59: rustc_interface::queries::::enter 60: rustc_span::with_source_map 61: rustc_interface::interface::create_compiler_and_run 62: scoped_tls::ScopedKey::set ```

My cargo.toml looks as follows:

[package]
name = "graphite"
version = "0.1.0"
authors = ["Folling <coding@folling.de>"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
sdl2 = "0.34"
gl = "0.14.0"

---

Hope this helps!

[osa1]

Seems like a duplicate of #83259.

[wesleywiser]

Thanks for filing the bug report! We just shipped a patch release to work around this issue and are currently triaging related issues related to ensure each underlying problem gets resolved. Since this appears to be a duplicate of #83259, I'm going to close in favor of that issue.