error: internal compiler error: no errors encountered even though `delay_span_bug` issued

[Kofituo]

As I was compiling Substrate, I faced this error:

error: internal compiler error: no errors encountered even though `delay_span_bug` issued

error: internal compiler error: broken MIR in DropGlue(DefId(2:2801 ~ core[b4b4]::ptr::drop_in_place), Some(hyper::proto::h1::dispatch::Server<hyper::service::util::ServiceFn<fn(http::request::Request<jsonrpsee::jsonrpsee_server::logger::Body>) -> impl futures::Future<Output = sc_service::Result<http::response::Response<jsonrpsee::jsonrpsee_server::logger::Body>, std::convert::Infallible>> {jsonrpsee::jsonrpsee_server::transport::http::reject_connection::{closure#0}::reject}, jsonrpsee::jsonrpsee_server::logger::Body>, jsonrpsee::jsonrpsee_server::logger::Body>)) (after phase change to runtime-optimized) at bb0[0]:
                                Field projection `(*_1).field[0]` specified type `std::pin::Pin<std::boxed::Box<std::option::Option<std::future::from_generator::GenFuture<[static generator@jsonrpsee::jsonrpsee_server::transport::http::reject_connection::{closure#0}::reject::{closure#0}]>>>>`, but actual type is `std::pin::Pin<std::boxed::Box<std::option::Option<<hyper::service::util::ServiceFn<fn(http::request::Request<jsonrpsee::jsonrpsee_server::logger::Body>) -> impl futures::Future<Output = sc_service::Result<http::response::Response<jsonrpsee::jsonrpsee_server::logger::Body>, std::convert::Infallible>> {jsonrpsee::jsonrpsee_server::transport::http::reject_connection::{closure#0}::reject}, jsonrpsee::jsonrpsee_server::logger::Body> as hyper::service::http::HttpService<jsonrpsee::jsonrpsee_server::logger::Body>>::Future>>>`
   --> /Users/kofiotuo/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:490:1
    |
490 | pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: delayed at compiler/rustc_const_eval/src/transform/validate.rs:88:36

thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1594:13
stack backtrace:
   0:        0x100fd3c44 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h5ceaa9f104581d16
   1:        0x101024ff0 - core::fmt::write::h70c33f48cfd4e8aa
   2:        0x100fc71f4 - std::io::Write::write_fmt::h24e387c05c0fa515
   3:        0x100fd3a58 - std::sys_common::backtrace::print::ha3dd569c0e03b1e6
   4:        0x100fd64ec - std::panicking::default_hook::{{closure}}::h85ce766fb3b3c496
   5:        0x100fd6244 - std::panicking::default_hook::h7c44756c2f138c7c
   6:        0x1090ce784 - rustc_driver[34fe2e47ceb1eef]::DEFAULT_HOOK::{closure#0}::{closure#0}
   7:        0x100fd6be4 - std::panicking::rust_panic_with_hook::h243fdb33bd154152
   8:        0x10cffe950 - std[f91ad3a11560037b]::panicking::begin_panic::<rustc_errors[159eca52afa358bf]::ExplicitBug>::{closure#0}
   9:        0x10cffcfd8 - std[f91ad3a11560037b]::sys_common::backtrace::__rust_end_short_backtrace::<std[f91ad3a11560037b]::panicking::begin_panic<rustc_errors[159eca52afa358bf]::ExplicitBug>::{closure#0}, !>
  10:        0x10d3698ec - std[f91ad3a11560037b]::panicking::begin_panic::<rustc_errors[159eca52afa358bf]::ExplicitBug>
  11:        0x10cff0bec - std[f91ad3a11560037b]::panic::panic_any::<rustc_errors[159eca52afa358bf]::ExplicitBug>
  12:        0x10cff66d0 - <rustc_errors[159eca52afa358bf]::HandlerInner>::flush_delayed::<alloc[81ea9162d64fa727]::vec::Vec<rustc_errors[159eca52afa358bf]::diagnostic::Diagnostic>, &str>
  13:        0x10cff31bc - <rustc_errors[159eca52afa358bf]::HandlerInner as core[b4b423dc40156325]::ops::drop::Drop>::drop
  14:        0x10906201c - core[b4b423dc40156325]::ptr::drop_in_place::<rustc_session[ee64fa510201ce22]::parse::ParseSess>
  15:        0x109063400 - core[b4b423dc40156325]::ptr::drop_in_place::<rustc_session[ee64fa510201ce22]::session::Session>
  16:        0x1090be188 - core[b4b423dc40156325]::ptr::drop_in_place::<rustc_interface[d6308f9366e490e8]::interface::Compiler>
  17:        0x1090aa118 - rustc_span[668ea99b1ecd1622]::with_source_map::<core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>, rustc_interface[d6308f9366e490e8]::interface::run_compiler<core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>, rustc_driver[34fe2e47ceb1eef]::run_compiler::{closure#1}>::{closure#0}::{closure#1}>
  18:        0x1090a1f8c - <scoped_tls[44143ff9a1fdbbff]::ScopedKey<rustc_span[668ea99b1ecd1622]::SessionGlobals>>::set::<rustc_interface[d6308f9366e490e8]::interface::run_compiler<core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>, rustc_driver[34fe2e47ceb1eef]::run_compiler::{closure#1}>::{closure#0}, core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>>
  19:        0x109070f74 - std[f91ad3a11560037b]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[d6308f9366e490e8]::util::run_in_thread_pool_with_globals<rustc_interface[d6308f9366e490e8]::interface::run_compiler<core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>, rustc_driver[34fe2e47ceb1eef]::run_compiler::{closure#1}>::{closure#0}, core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>>
  20:        0x109056d40 - <<std[f91ad3a11560037b]::thread::Builder>::spawn_unchecked_<rustc_interface[d6308f9366e490e8]::util::run_in_thread_pool_with_globals<rustc_interface[d6308f9366e490e8]::interface::run_compiler<core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>, rustc_driver[34fe2e47ceb1eef]::run_compiler::{closure#1}>::{closure#0}, core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b4b423dc40156325]::result::Result<(), rustc_errors[159eca52afa358bf]::ErrorGuaranteed>>::{closure#1} as core[b4b423dc40156325]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  21:        0x100fdee60 - std::sys::unix::thread::Thread::new::thread_start::h94b0d6958f791f7f
  22:        0x1ab33206c - __pthread_deallocate

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 1.67.0-nightly (70f8737b2 2022-11-23) running on aarch64-apple-darwin

note: compiler flags: --crate-type bin -C opt-level=3 -C embed-bitcode=no

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

query stack during panic:
end of query stack
error: could not compile `node-template`

[compiler-errors]

Do you have some code to reproduce this ICE?

[bruceg]

I think I've hit the same bug compiling Vector with 1.67.0 stable. The logs are here. The branch is bruceg/update-rust-1-67, but that's a long way away from a minimum reproducer.

[jszwedko]

I think I've hit the same bug compiling Vector with 1.67.0 stable. The logs are here. The branch is bruceg/update-rust-1-67, but that's a long way away from a minimum reproducer.

To add onto this, it looks like just compiling one of the smaller subcrates triggers it so would help narrow it down. On that branch you can build just lib/vector-buffers to trigger it. It only triggers when building with --release.

[jszwedko]

I ran cargo-bisect and it seems to point to 2f8d804 as the commit that introduces the ICE.

[langston-barrett]

The bruceg/update-rust-1-67 branch doesn't seem to be available any longer, and I couldn't reproduce on HEAD with nightly.

@rustbot label +E-needs-mcve

[jszwedko]

At least for vectordotdev/vector I can confirm that cargo 1.70.0-nightly (4a3c588b1 2023-03-14) builds without issue. Thanks for the prompt @langston-barrett !