error: internal compiler error: compiler/rustc_mir/src/transform/generator.rs:751:13: Broken MIR: generator contains type

[rainliu]

Code

https://github.com/webrtc-rs/ice/runs/2262774206?check_suite_focus=true

Meta

rustc --version --verbose:

note: rustc 1.53.0-nightly (0b417ab5c 2021-04-03) running on x86_64-unknown-linux-gnu

Error output

error: internal compiler error: compiler/rustc_mir/src/transform/generator.rs:751:13: Broken MIR: generator contains type [closure@src/agent/agent_test.rs:1817:9: 1829:10] in MIR, but typeck only knows about for<'r, 's, 't0, 't1, 't2, 't3, 't4, 't5, 't6, 't7, 't8, 't9, 't10, 't11, 't12, 't13, 't14, 't15, 't16> {ResumeTy, std::time::Duration, [closure@src/agent/agent_test.rs:1817:9: 1829:10], &'s std::time::Duration, Option<std::time::Duration>, agent_config::AgentConfig, Option<agent_config::AgentConfig>, impl std::future::Future, (), std::sync::Arc<agent::Agent>, &'t0 [closure@src/agent/agent_test.rs:1817:9: 1829:10], &'t2 agent::Agent, impl std::future::Future, String, Box<(dyn FnMut(state::ConnectionState) + Send + Sync + 't4)>, tokio::sync::mpsc::Receiver<()>, impl std::future::Future, &'t6 str, impl std::future::Future, impl std::future::Future, impl std::future::Future, &'t10 std::sync::Arc<agent::Agent>, impl std::future::Future, &'t13 mut tokio::sync::mpsc::Receiver<()>, impl std::future::Future, &'t15 String, impl std::future::Future}
    --> src/agent/agent_test.rs:1811:62
     |
1811 |   async fn test_agent_restart_both_side() -> Result<(), Error> {
     |  ______________________________________________________________^
1812 | |     let one_second = Duration::from_secs(1);
1813 | |     //"Restart Both Sides"
1814 | |
...    |
1887 | |     Ok(())
1888 | | }
     | |_^

thread 'rustc' panicked at 'Box<Any>', /rustc/0b417ab5cdfdedffd74fb22cf22d27033c851304/library/std/src/panic.rs:59:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

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 (0b417ab5c 2021-04-03) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z profile -Z panic_abort_tests -C embed-bitcode=no -C debuginfo=2 -C codegen-units=1 -C opt-level=0 -C link-dead-code -C overflow-checks=off -C panic=abort -C debug-assertions=off

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

query stack during panic:
#0 [optimized_mir] optimizing MIR for `agent::agent_test::test_agent_restart_both_side::{closure#0}`
#1 [layout_raw] computing layout of `[static generator@src/agent/agent_test.rs:1811:62: 1888:2 for<'r, 's, 't0, 't1, 't2, 't3, 't4, 't5, 't6, 't7, 't8, 't9, 't10, 't11, 't12, 't13, 't14, 't15, 't16> {std::future::ResumeTy, std::time::Duration, [closure@src/agent/agent_test.rs:1817:9: 1829:10], &'s std::time::Duration, std::option::Option<std::time::Duration>, agent::agent_config::AgentConfig, std::option::Option<agent::agent_config::AgentConfig>, std::future::from_generator::GenFuture<[static generator@src/agent/agent_transport_test.rs:11:78: 45:2 for<'t17, 't18, 't19, 't20, 't21, 't22, 't23, 't24> {std::future::ResumeTy, std::option::Option<agent::agent_config::AgentConfig>, std::boxed::Box<(dyn std::ops::FnMut(state::ConnectionState) + std::marker::Send + std::marker::Sync + 't17)>, tokio::sync::mpsc::Receiver<()>, agent::agent_config::AgentConfig, std::future::from_generator::GenFuture<[static generator@src/agent/mod.rs:95:71: 279:6 for<'t25, 't26, 't27, 't28, 't29, 't30, 't31, 't32, 't33, 't34> {std::future::ResumeTy, agent::agent_config::AgentConfig, std::string::String, mdns::MulticastDnsMode, std::option::Option<std::sync::Arc<webrtc_mdns::conn::DNSConn>>, tokio::sync::mpsc::Sender<state::ConnectionState>, tokio::sync::mpsc::Receiver<state::ConnectionState>, tokio::sync::mpsc::Sender<std::option::Option<std::sync::Arc<(dyn candidate::Candidate + std::marker::Send + std::marker::Sync + 't25)>>>, tokio::sync::mpsc::Receiver<std::option::Option<std::sync::Arc<(dyn candidate::Candidate + std::marker::Send + std::marker::Sync + 't26)>>>, tokio::sync::mpsc::Sender<()>, tokio::sync::mpsc::Receiver<()>, tokio::sync::mpsc::Sender<bool>, tokio::sync::mpsc::Receiver<bool>, tokio::sync::broadcast::Sender<()>, agent::agent_internal::AgentInternal, std::vec::Vec<candidate::CandidateType>, &'t27 std::option::Option<std::sync::Arc<webrtc_mdns::conn::DNSConn>>, impl std::future::Future, (), &'t29 agent::agent_config::AgentConfig, &'t30 [candidate::CandidateType], &'t31 std::vec::Vec<candidate::CandidateType>, std::result::Result<std::option::Option<external_ip_mapper::ExternalIpMapper>, webrtc_util::Error>, webrtc_util::Error, std::option::Option<external_ip_mapper::ExternalIpMapper>, std::sync::Arc<webrtc_util::vnet::net::Net>, agent::Agent, std::sync::Arc<tokio::sync::Mutex<agent::agent_internal::AgentInternal>>, std::future::from_generator::GenFuture<[static generator@src/agent/mod.rs:306:7: 363:6 {}]>, &'t32 agent::Agent, impl std::future::Future, std::result::Result<(), webrtc_util::Error>, impl std::future::Future}]>, (), std::sync::Arc<agent::Agent>, &'t18 agent::Agent, impl std::future::Future, &'t20 std::sync::Arc<agent::Agent>, impl std::future::Future, std::sync::Arc<agent::agent_transport::AgentConn>, std::sync::Arc<agent::agent_transport::AgentConn>, &'t23 mut tokio::sync::mpsc::Receiver<()>, impl std::future::Future}]>, (), std::sync::Arc<agent::Agent>, &'t0 [closure@src/agent/agent_test.rs:1817:9: 1829:10], &'t2 agent::Agent, impl std::future::Future, std::string::String, std::boxed::Box<(dyn std::ops::FnMut(state::ConnectionState) + std::marker::Send + std::marker::Sync + 't4)>, tokio::sync::mpsc::Receiver<()>, impl std::future::Future, &'t6 str, impl std::future::Future, impl std::future::Future, impl std::future::Future, &'t10 std::sync::Arc<agent::Agent>, impl std::future::Future, &'t13 mut tokio::sync::mpsc::Receiver<()>, impl std::future::Future, &'t15 std::string::String, impl std::future::Future}]`

Backtrace

<backtrace>

[SNCPlay42]

Reduced:

async fn test_agent_restart_both_side() -> () {
    let generate_candidate_address_strings = |_: Box<dyn Candidate>| -> () {};
    generate_candidate_address_strings(get_local_candidates().await);
}
async fn get_local_candidates() -> Box<dyn Candidate> {
    unimplemented!()
}
trait Candidate {}

So this is a duplicate of #83737.