'rustc' panicked at 'no errors encountered even though delay_span_bug issued', compiler\rustc_errors\src\lib.rs:1050:13

[jruiss]

I tried compiling wgpu-core.

I expected to see this happen: explanation
Successfull compilation.

Instead, this happened: explanation
error: internal compiler error: unexpected panic

Meta

rustc --version --verbose:

rustc 1.55.0-nightly (014026d1a 2021-07-19) running on x86_64-pc-windows-msvc 

Backtrace

Just a repetion of this until panic.

error: internal compiler error: failed to process buffered lint here (dummy = false)                                                                                                                                                           --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5                                                                                                                                               |                                                                                                                                                                                                                                         7  | /     cfg_aliases::cfg_aliases! {                                                                                                                                                                                                       8  | |         // Vendors/systems                                                                                                                                                                                                            9  | |         wasm: { target_arch = "wasm32" },                                                                                                                                                                                             10 | |         apple: { any(target_os = "ios", target_os = "macos") },                                                                                                                                                                       ...  |                                                                                                                                                                                                                                       18 | |         gl: { any(wasm, unix_wo_apple) },                                                                                                                                                                                             19 | |     }                                                                                                                                                                                                                                    | |_____^                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                            = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18                                                                                                                                   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info)                                                                                                                                                                                                                                                                                                                               error: internal compiler error: failed to process buffered lint here (dummy = false)                                                                                                                                                           --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5                                                                                                                                               |                                                                                                                                                                                                                                         7  | /     cfg_aliases::cfg_aliases! {                                                                                                                                                                                                       8  | |         // Vendors/systems                                                                                                                                                                                                            9  | |         wasm: { target_arch = "wasm32" },                                                                                                                                                                                             10 | |         apple: { any(target_os = "ios", target_os = "macos") },                                                                                                                                                                       ...  |                                                                                                                                                                                                                                       18 | |         gl: { any(wasm, unix_wo_apple) },                                                                                                                                                                                             19 | |     }                                                                                                                                                                                                                                    | |_____^                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                            = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18                                                                                                                                   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info)                                                                                                                                                                                                                                                                                                                               error: internal compiler error: failed to process buffered lint here (dummy = false)                                                                                                                                                           --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5                                                                                                                                               |                                                                                                                                                                                                                                         7  | /     cfg_aliases::cfg_aliases! {                                                                                                                                                                                                       8  | |         // Vendors/systems                                                                                                                                                                                                            9  | |         wasm: { target_arch = "wasm32" },                                                                                                                                                                                             10 | |         apple: { any(target_os = "ios", target_os = "macos") },                                                                                                                                                                       ...  |                                                                                                                                                                                                                                       18 | |         gl: { any(wasm, unix_wo_apple) },                                                                                                                                                                                             19 | |     }                                                                                                                                                                                                                                    | |_____^                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                            = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18                                                                                                                                   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info)                                                                                                                                                                                                                                                                                                                               error: internal compiler error: failed to process buffered lint here (dummy = false)                                                                                                                                                           --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5                                                                                                                                               |                                                                                                                                                                                                                                         7  | /     cfg_aliases::cfg_aliases! {                                                                                                                                                                                                       8  | |         // Vendors/systems                                                                                                                                                                                                            9  | |         wasm: { target_arch = "wasm32" },                                                                                                                                                                                             10 | |         apple: { any(target_os = "ios", target_os = "macos") },                                                                                                                                                                       ...  |                                                                                                                                                                                                                                       18 | |         gl: { any(wasm, unix_wo_apple) },                                                                                                                                                                                             19 | |     }                                                                                                                                                                                                                                    | |_____^                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                            = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18                                                                                                                                   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info)                                                                                                                                                                                                                                                                                                                               error: internal compiler error: failed to process buffered lint here (dummy = false)                                                                                                                                                           --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5                                                                                                                                               |                                                                                                                                                                                                                                         7  | /     cfg_aliases::cfg_aliases! {                                                                                                                                                                                                       8  | |         // Vendors/systems                                                                                                                                                                                                            9  | |         wasm: { target_arch = "wasm32" },                                                                                                                                                                                             10 | |         apple: { any(target_os = "ios", target_os = "macos") },                                                                                                                                                                       ...  |                                                                                                                                                                                                                                       18 | |         gl: { any(wasm, unix_wo_apple) },                                                                                                                                                                                             19 | |     }                                                                                                                                                                                                                                    | |_____^                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                            = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18                                                                                                                                   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info)                                                                                                                                                                                                                                                                                                                               error: internal compiler error: failed to process buffered lint here (dummy = false)                                                                                                                                                           --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5                                                                                                                                               |                                                                                                                                                                                                                                         7  | /     cfg_aliases::cfg_aliases! {                                                                                                                                                                                                       8  | |         // Vendors/systems                                                                                                                                                                                                            9  | |         wasm: { target_arch = "wasm32" },                                                                                                                                                                                             10 | |         apple: { any(target_os = "ios", target_os = "macos") },                                                                                                                                                                       ...  |                                                                                                                                                                                                                                       18 | |         gl: { any(wasm, unix_wo_apple) },                                                                                                                                                                                             19 | |     }                                                                                                                                                                                                                                    | |_____^                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                            = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18                                                                                                                                   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info)                                                                                                                                                                                                                                                                                                                               error: internal compiler error: failed to process buffered lint here (dummy = false)                                                                                                                                                           --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5                                                                                                                                               |                                                                                                                                                                                                                                         7  | /     cfg_aliases::cfg_aliases! {                                                                                                                                                                                                       8  | |         // Vendors/systems                                                                                                                                                                                                            9  | |         wasm: { target_arch = "wasm32" },                                                                                                                                                                                             10 | |         apple: { any(target_os = "ios", target_os = "macos") },                                                                                                                                                                       ...  |                                                                                                                                                                                                                                       18 | |         gl: { any(wasm, unix_wo_apple) },                                                                                                                                                                                             19 | |     }                                                                                                                                                                                                                                    | |_____^                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                            = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18                                                                                                                                   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info)                                                                                                                                                                                                                                                                                                                               error: internal compiler error: failed to process buffered lint here (dummy = false)                                                                                                                                                           --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5                                                                                                                                               |                                                                                                                                                                                                                                         7  | /     cfg_aliases::cfg_aliases! {                                                                                                                                                                                                       8  | |         // Vendors/systems                                                                                                                                                                                                            9  | |         wasm: { target_arch = "wasm32" },                                                                                                                                                                                             10 | |         apple: { any(target_os = "ios", target_os = "macos") },                                                                                                                                                                       ...  |                                                                                                                                                                                                                                       18 | |         gl: { any(wasm, unix_wo_apple) },                                                                                                                                                                                             19 | |     }                                                                                                                                                                                                                                    | |_____^                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                            = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18                                                                                                                                   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info)                                                                                                                                                                                                                                                                                                                               error: internal compiler error: failed to process buffered lint here (dummy = false)                                                                                                                                                           --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5                                                                                                                                               |                                                                                                                                                                                                                                         7  | /     cfg_aliases::cfg_aliases! {                                                                                                                                                                                                       8  | |         // Vendors/systems                                                                                                                                                                                                            9  | |         wasm: { target_arch = "wasm32" },                                                                                                                                                                                             10 | |         apple: { any(target_os = "ios", target_os = "macos") },                                                                                                                                                                       ...  |                                                                                                                                                                                                                                       18 | |         gl: { any(wasm, unix_wo_apple) },                                                                                                                                                                                             19 | |     }                                                                                                                                                                                                                                    | |_____^                                                                                                                                                                                                                                    |                                                                                                                                                                                                                                            = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18                                                                                                                                   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info) 

[takkuumi]

same

[hellow554]

Hey @e0gs

thank you for the report. Sadly I haven't been able to reproduce your issue.

What was your command to build the crate? Which version of the crate did you use? Can you specify a certain commit maybe?

[jruiss]

Hey @e0gs

thank you for the report. Sadly I haven't been able to reproduce your issue.

What was your command to build the crate? Which version of the crate did you use? Can you specify a certain commit maybe?

Was in the end trying to build Iced 0.3.0 and Iced-aw

iced = "0.3.0"
iced_aw = { git = "https://github.com/iced-rs/iced_aw", branch = "main", default-features = false, features = ["floating_button", "colors", "tab_bar", "tabs", "icons", "icon_text", "card", "modal"] }

error: internal compiler error: failed to process buffered lint here (dummy = false)
  --> C:\Users\owner\.cargo\registry\src\github.com-1ecc6299db9ec823\wgpu-core-0.7.1\build.rs:7:5
   |
7  | /     cfg_aliases::cfg_aliases! {
8  | |         // Vendors/systems
9  | |         wasm: { target_arch = "wasm32" },
10 | |         apple: { any(target_os = "ios", target_os = "macos") },
...  |
18 | |         gl: { any(wasm, unix_wo_apple) },
19 | |     }
   | |_____^
   |
   = note: delayed at /rustc/014026d1a7ca991f82f12efa95ef4dffb29dc8af\compiler\rustc_lint\src\early.rs:402:18
   = note: this error: internal compiler error originates in the macro `$crate::cfg_aliases` (in Nightly builds, run with -Z macro-backtrace for more info)

thread 'rustc' panicked at 'no errors encountered even though `delay_span_bug` issued', compiler\rustc_errors\src\lib.rs:1050:13
stack backtrace:
   0:     0x7ffaa12f72cf - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf8f9ccaaf737268c
   1:     0x7ffaa132030a - core::fmt::write::h7e004fee938dc3bd
   2:     0x7ffaa12eaa58 - <std::io::IoSlice as core::fmt::Debug>::fmt::h5e8f50613d775ee8
   3:     0x7ffaa12faef6 - std::panicking::take_hook::hb09930640d1f28d1
   4:     0x7ffaa12fa9d9 - std::panicking::take_hook::hb09930640d1f28d1
   5:     0x7ffa93b3210e - <md5::Md5 as std::io::Write>::flush::h740848eb8d315998
   6:     0x7ffaa12fb7f0 - std::panicking::rust_panic_with_hook::ha77067ca1c3aa04d
   7:     0x7ffaa12fb2b1 - rust_begin_unwind
   8:     0x7ffaa12f7c1f - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf8f9ccaaf737268c
   9:     0x7ffaa12fb209 - rust_begin_unwind
  10:     0x7ffaa135599c - std::panicking::begin_panic_fmt::hd0b34d17ecdda70b
  11:     0x7ffa97e115cf - rustc_errors::HandlerInner::delay_as_bug::had7a1fc16257907d
  12:     0x7ffa97e0d052 - <rustc_errors::HandlerInner as core::ops::drop::Drop>::drop::h6ab627992737d6aa
  13:     0x7ffa93bb5374 - <rustc_driver::args::Error as core::fmt::Debug>::fmt::h5df0c4d8fb3d3c5e
  14:     0x7ffa93bbce5a - <rustc_driver::args::Error as core::fmt::Debug>::fmt::h5df0c4d8fb3d3c5e
  15:     0x7ffa93b4fe1d - <rustc_hir::intravisit::ErasedMap as rustc_hir::intravisit::Map>::foreign_item::h82aae2bf47c2b2ad
  16:     0x7ffa93b4bcee - chalk_engine::TableIndex::increment::h1dc89da32ec272e2
  17:     0x7ffa93b89359 - <rustc_driver::args::Error as core::fmt::Debug>::fmt::h5df0c4d8fb3d3c5e
  18:     0x7ffa93b5687a - <rustc_middle::ty::SymbolName as core::fmt::Display>::fmt::h5079114a276318b8
  19:     0x7ffa93b53518 - rustc_driver::pretty::print_after_hir_lowering::h5170af9d47465e28
  20:     0x7ffa93b46d6d - <rustc_driver::Compilation as core::fmt::Debug>::fmt::h64cba24964385564
  21:     0x7ffaa130933c - std::sys::windows::thread::Thread::new::h0a6e657a03ae2a48
  22:     0x7ffaf2957034 - BaseThreadInitThunk
  23:     0x7ffaf3ba2651 - RtlUserThreadStart

EDIT:
compiler flags if that's what you meant by command,

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 1.55.0-nightly (014026d1a 2021-07-19) running on x86_64-pc-windows-msvc

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 --crate-type bin

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

query stack during panic:
end of query stack
error: could not compile `wgpu-core`
warning: build failed, waiting for other jobs to finish...
error: build failed

[hellow554]

Thank you for the correct backtrace!

This should/could have been fixed by #87284 so can you try tomorrow with an updated nightly again and report it back please?

[jruiss]

Had set RUST_BACKTRACE=1 in cmd.exe the first time but it didn't give me any traceback until switching back and forth from stabe - nightly.

Will do that.

[jruiss]

Works as expected with nightly-x86_64-pc-windows-msvc - rustc 1.55.0-nightly (32c9b7b 2021-07-21)