ICE: Broken MIR in DropGlue + no errors even though delay_span_bug issued

[saethlin]

Code

https://crates.io/crates/vujio version 0.1.3
(yes the error says it's from compiling wgpu, but I can't get just that crate to ICE)

Meta

rustc --version --verbose:

cargo 1.65.0-nightly (646e9a0b9 2022-09-02)
release: 1.65.0-nightly
commit-hash: 646e9a0b9ea8354cc409d05f10e8dc752c5de78e
commit-date: 2022-09-02
host: x86_64-unknown-linux-gnu
libgit2: 1.5.0 (sys:0.15.0 vendored)
libcurl: 7.83.1-DEV (sys:0.4.55+curl-7.83.1 vendored ssl:OpenSSL/1.1.1q)
os: Arch Linux Rolling Release [64-bit]

Error output

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

error: internal compiler error: broken MIR in DropGlue(DefId(2:2767 ~ core[178b]::ptr::drop_in_place), Some(futures::stream::FuturesOrdered<futures::future::Inspect<backend::native_gpu_future::GpuFuture<std::result::Result<(), BufferAsyncError>>, [closure@/home/ben/.cargo/registry/src/github.com-1ecc6299db9ec823/wgpu-0.6.2/src/util/belt.rs:143:26: 143:34]>>)) (after pass PhaseChange-Runtime(Optimized)) at bb3[0]:
                                Field projection `(*_1).field[1]` specified type `std::collections::BinaryHeap<futures::stream::futures_ordered::OrderWrapper<std::result::Result<(), BufferAsyncError>>>`, but actual type is std::collections::BinaryHeap<futures::stream::futures_ordered::OrderWrapper<<futures::future::Inspect<backend::native_gpu_future::GpuFuture<std::result::Result<(), BufferAsyncError>>, [closure@/home/ben/.cargo/registry/src/github.com-1ecc6299db9ec823/wgpu-0.6.2/src/util/belt.rs:143:26: 143:34]> as futures::Future>::Output>>
   --> /home/ben/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:487:1
    |
487 | pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: delayed at compiler/rustc_const_eval/src/transform/validate.rs:128:36

error: internal compiler error: broken MIR in DropGlue(DefId(2:2767 ~ core[178b]::ptr::drop_in_place), Some(futures::stream::FuturesOrdered<futures::future::Inspect<backend::native_gpu_future::GpuFuture<std::result::Result<(), BufferAsyncError>>, [closure@/home/ben/.cargo/registry/src/github.com-1ecc6299db9ec823/wgpu-0.6.2/src/util/belt.rs:143:26: 143:34]>>)) (after pass PhaseChange-Runtime(Optimized)) at bb4[0]:
                                Field projection `(*_1).field[1]` specified type `std::collections::BinaryHeap<futures::stream::futures_ordered::OrderWrapper<std::result::Result<(), BufferAsyncError>>>`, but actual type is std::collections::BinaryHeap<futures::stream::futures_ordered::OrderWrapper<<futures::future::Inspect<backend::native_gpu_future::GpuFuture<std::result::Result<(), BufferAsyncError>>, [closure@/home/ben/.cargo/registry/src/github.com-1ecc6299db9ec823/wgpu-0.6.2/src/util/belt.rs:143:26: 143:34]> as futures::Future>::Output>>
   --> /home/ben/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:487:1
    |
487 | pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: delayed at compiler/rustc_const_eval/src/transform/validate.rs:128:36

thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1494:13

Backtrace

thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1494:13
stack backtrace:
   0:     0x7f0a5439f210 - std::backtrace_rs::backtrace::libunwind::trace::hddd5e6b1b5e0cf84
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   1:     0x7f0a5439f210 - std::backtrace_rs::backtrace::trace_unsynchronized::h1e30619f2b1dfc7e
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f0a5439f210 - std::sys_common::backtrace::_print_fmt::h1c57dbed6b9e39aa
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7f0a5439f210 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h81e97128ef1d32f9
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7f0a543fa02e - core::fmt::write::h05bb200d128bd301
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/core/src/fmt/mod.rs:1202:17
   5:     0x7f0a5438fcd5 - std::io::Write::write_fmt::hc8d8769ac02ad98c
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/io/mod.rs:1679:15
   6:     0x7f0a543a1e63 - std::sys_common::backtrace::_print::h7f10095fdc95f046
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7f0a543a1e63 - std::sys_common::backtrace::print::hff7966088cd7ef66
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7f0a543a1e63 - std::panicking::default_hook::{{closure}}::h5cfa206e6d48c088
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/panicking.rs:295:22
   9:     0x7f0a543a1b4f - std::panicking::default_hook::h75a6d8252dff2ced
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/panicking.rs:314:9
  10:     0x7f0a52dec9d1 - rustc_driver[4dbe72ff95e91a37]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f0a543a269d - std::panicking::rust_panic_with_hook::h119231c709fbe31a
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/panicking.rs:702:17
  12:     0x7f0a53f33221 - std[229541c32b9def22]::panicking::begin_panic::<rustc_errors[5d6420c66e5c3514]::ExplicitBug>::{closure#0}
  13:     0x7f0a53f32d76 - std[229541c32b9def22]::sys_common::backtrace::__rust_end_short_backtrace::<std[229541c32b9def22]::panicking::begin_panic<rustc_errors[5d6420c66e5c3514]::ExplicitBug>::{closure#0}, !>
  14:     0x7f0a53f32d36 - std[229541c32b9def22]::panicking::begin_panic::<rustc_errors[5d6420c66e5c3514]::ExplicitBug>
  15:     0x7f0a53f358d6 - std[229541c32b9def22]::panic::panic_any::<rustc_errors[5d6420c66e5c3514]::ExplicitBug>
  16:     0x7f0a52945f68 - <rustc_errors[5d6420c66e5c3514]::HandlerInner as core[178bf54443111ecd]::ops::drop::Drop>::drop
  17:     0x7f0a51bf4bd8 - core[178bf54443111ecd]::ptr::drop_in_place::<rustc_session[54b7ccc2eea64ffd]::parse::ParseSess>
  18:     0x7f0a51bb2f58 - <alloc[aa703239628d5152]::rc::Rc<rustc_session[54b7ccc2eea64ffd]::session::Session> as core[178bf54443111ecd]::ops::drop::Drop>::drop
  19:     0x7f0a51baff0d - core[178bf54443111ecd]::ptr::drop_in_place::<rustc_interface[14c34b33c6f785f8]::interface::Compiler>
  20:     0x7f0a51bad73f - rustc_interface[14c34b33c6f785f8]::interface::create_compiler_and_run::<core[178bf54443111ecd]::result::Result<(), rustc_errors[5d6420c66e5c3514]::ErrorGuaranteed>, rustc_driver[4dbe72ff95e91a37]::run_compiler::{closure#1}>
  21:     0x7f0a51babc51 - <scoped_tls[c74ddbab68ad7cb1]::ScopedKey<rustc_span[ddb8e6977b977c82]::SessionGlobals>>::set::<rustc_interface[14c34b33c6f785f8]::interface::run_compiler<core[178bf54443111ecd]::result::Result<(), rustc_errors[5d6420c66e5c3514]::ErrorGuaranteed>, rustc_driver[4dbe72ff95e91a37]::run_compiler::{closure#1}>::{closure#0}, core[178bf54443111ecd]::result::Result<(), rustc_errors[5d6420c66e5c3514]::ErrorGuaranteed>>
  22:     0x7f0a51bab93f - std[229541c32b9def22]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[14c34b33c6f785f8]::util::run_in_thread_pool_with_globals<rustc_interface[14c34b33c6f785f8]::interface::run_compiler<core[178bf54443111ecd]::result::Result<(), rustc_errors[5d6420c66e5c3514]::ErrorGuaranteed>, rustc_driver[4dbe72ff95e91a37]::run_compiler::{closure#1}>::{closure#0}, core[178bf54443111ecd]::result::Result<(), rustc_errors[5d6420c66e5c3514]::ErrorGuaranteed>>::{closure#0}, core[178bf54443111ecd]::result::Result<(), rustc_errors[5d6420c66e5c3514]::ErrorGuaranteed>>
  23:     0x7f0a52c613b9 - <<std[229541c32b9def22]::thread::Builder>::spawn_unchecked_<rustc_interface[14c34b33c6f785f8]::util::run_in_thread_pool_with_globals<rustc_interface[14c34b33c6f785f8]::interface::run_compiler<core[178bf54443111ecd]::result::Result<(), rustc_errors[5d6420c66e5c3514]::ErrorGuaranteed>, rustc_driver[4dbe72ff95e91a37]::run_compiler::{closure#1}>::{closure#0}, core[178bf54443111ecd]::result::Result<(), rustc_errors[5d6420c66e5c3514]::ErrorGuaranteed>>::{closure#0}, core[178bf54443111ecd]::result::Result<(), rustc_errors[5d6420c66e5c3514]::ErrorGuaranteed>>::{closure#1} as core[178bf54443111ecd]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  24:     0x7f0a543ac4f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h36c6bf5e47e96783
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/alloc/src/boxed.rs:1940:9
  25:     0x7f0a543ac4f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h145bc1ef077d35d5
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/alloc/src/boxed.rs:1940:9
  26:     0x7f0a543ac4f3 - std::sys::unix::thread::Thread::new::thread_start::h9922d7fa7807ef1d
                               at /rustc/c2804e6ec2c29a5c7368600ea173b890e2655c3d/library/std/src/sys/unix/thread.rs:108:17
  27:     0x7f0a5048478d - <unknown>
  28:     0x7f0a505058e4 - clone
  29:                0x0 - <unknown>

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 1.65.0-nightly (c2804e6ec 2022-09-07) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C linker=clang -C link-arg=-fuse-ld=mold

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

query stack during panic:
end of query stack
error: could not compile `wgpu`

[saethlin]

Oops this might be a duplicate of #101548, I'll keep an eye out to see if it is fixed by #101437

[saethlin]

Yes, this is fixed.