Nightly compiler error compiling wayland-protocols v0.6.6 with rustc 1.76.0-nightly (3f28fe133 2023-12-18)

[andrewdavidmackenzie]

I have a nightly CI job that has started to fail running clippy, due to a compiler error compiling wayland-protocols.

The dependency chain is down from iced thru "clipboard_wayland" (0.2.0) to "smithay-clipboard" (0.6.6).

"clipboard_wayland" 0.2.0 is the latest version on crates.io, but it depends on "smithay-clipboard" 0.6.6, while 0.7.0 is the latest version on crates.io.

I am not sure whether to pursue an update to "smithay-clipboard" 0.7.0 in "clipboard_wayland" in the hope that fixes it, or it's a compiler issue affecting multiple versions that I should pursue in rustc.

> rustc --version
rustc 1.76.0-nightly (3f28fe133 2023-12-18)

| error: internal compiler error: no errors encountered even though `span_delayed_bug` issued
| 
| error: internal compiler error: Trying to feed an already recorded value for query visibility key=DefId(0:6977 ~ wayland_protocols[6542]::unstable::xdg_decoration::v1::generated::client::{use#18}):
|                                 old value: Restricted(DefId(0:0 ~ wayland_protocols[6542]))
|                                 new value: Restricted(DefId(0:6958 ~ wayland_protocols[6542]::unstable::xdg_decoration::v1::generated::client))
|   |
|   = note: delayed at /rustc/3f28fe133475ec5faf3413b556bf3cfb0d51336c/compiler/rustc_middle/src/query/mod.rs:2206:1
|              0: <rustc_errors::DiagCtxtInner>::emit_diagnostic_without_consuming
|              1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
|              2: <rustc_session::session::Session>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
|              3: <rustc_resolve::Resolver>::feed_visibility
|              4: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor>::build_reduced_graph_for_use_tree
|              5: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor>::build_reduced_graph_for_use_tree
|              6: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast::visit::Visitor>::visit_item
|              7: rustc_ast::visit::walk_item::<rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor>
|              8: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast::visit::Visitor>::visit_item
|              9: rustc_ast::visit::walk_item::<rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor>
|             10: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast::visit::Visitor>::visit_item
|             11: <rustc_resolve::Resolver as rustc_expand::base::ResolverExpand>::visit_ast_fragment_with_placeholders
|             12: <rustc_expand::expand::MacroExpander>::collect_invocations
|             13: <rustc_expand::expand::MacroExpander>::fully_expand_fragment
|             14: <rustc_expand::expand::MacroExpander>::expand_crate
|             15: rustc_interface::passes::resolver_for_lowering
|             16: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::resolver_for_lowering::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
|             17: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
|             18: rustc_query_impl::query_impl::resolver_for_lowering::get_query_non_incr::__rust_end_short_backtrace
|             19: rustc_interface::interface::run_compiler::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}
|             20: std::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
|             21: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
|             22: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
|                        at /rustc/3f28fe133475ec5faf3413b556bf3cfb0d51336c/library/alloc/src/boxed.rs:2015:9
|             23: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
|                        at /rustc/3f28fe133475ec5faf3413b556bf3cfb0d51336c/library/alloc/src/boxed.rs:2015:9
|             24: std::sys::unix::thread::Thread::new::thread_start
|                        at /rustc/3f28fe133475ec5faf3413b556bf3cfb0d51336c/library/std/src/sys/unix/thread.rs:108:17
|             25: <unknown>
|             26: __clone
|           
| 
| error: internal compiler error: Trying to feed an already recorded value for query visibility key=DefId(0:12939 ~ wayland_protocols[6542]::wlr::unstable::input_inhibitor::v1::generated::client::{use#18}):
|                                 old value: Restricted(DefId(0:0 ~ wayland_protocols[6542]))
|                                 new value: Restricted(DefId(0:12920 ~ wayland_protocols[6542]::wlr::unstable::input_inhibitor::v1::generated::client))
|   |
|   = note: delayed at /rustc/3f28fe133475ec5faf3413b556bf3cfb0d51336c/compiler/rustc_middle/src/query/mod.rs:2206:1
|              0: <rustc_errors::DiagCtxtInner>::emit_diagnostic_without_consuming
|              1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
|              2: <rustc_session::session::Session>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
|              3: <rustc_resolve::Resolver>::feed_visibility
|              4: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor>::build_reduced_graph_for_use_tree
|              5: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor>::build_reduced_graph_for_use_tree
|              6: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast::visit::Visitor>::visit_item
|              7: rustc_ast::visit::walk_item::<rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor>
|              8: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast::visit::Visitor>::visit_item
|              9: rustc_ast::visit::walk_item::<rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor>
|             10: <rustc_resolve::build_reduced_graph::BuildReducedGraphVisitor as rustc_ast::visit::Visitor>::visit_item
|             11: <rustc_resolve::Resolver as rustc_expand::base::ResolverExpand>::visit_ast_fragment_with_placeholders
|             12: <rustc_expand::expand::MacroExpander>::collect_invocations
|             13: <rustc_expand::expand::MacroExpander>::fully_expand_fragment
|             14: <rustc_expand::expand::MacroExpander>::expand_crate
|             15: rustc_interface::passes::resolver_for_lowering
|             16: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::resolver_for_lowering::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
|             17: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
|             18: rustc_query_impl::query_impl::resolver_for_lowering::get_query_non_incr::__rust_end_short_backtrace
|             19: rustc_interface::interface::run_compiler::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}
|             20: std::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
|             21: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
|             22: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
|                        at /rustc/3f28fe133475ec5faf3413b556bf3cfb0d51336c/library/alloc/src/boxed.rs:2015:9
|             23: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
|                        at /rustc/3f28fe133475ec5faf3413b556bf3cfb0d51336c/library/alloc/src/boxed.rs:2015:9
|             24: std::sys::unix::thread::Thread::new::thread_start
|                        at /rustc/3f28fe133475ec5faf3413b556bf3cfb0d51336c/library/std/src/sys/unix/thread.rs:108:17
|             25: <unknown>
|             26: __clone
|           
| 
| 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: please attach the file at `/root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/wayland-protocols-0.29.5/rustc-ice-2023-12-19T17_29_19-7729.txt` to your bug report
| 
| note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C split-debuginfo=unpacked -C instrument-coverage
| 
| note: some of the compiler flags provided by cargo are hidden
| 
| query stack during panic:
| end of query stack
| error: could not compile `wayland-protocols` (lib)

[kchibisov]

Bring this straight to rustc, it's ICE as you can see, nothing to do with this crate other than it triggers ICE.

[ids1024]

I am not sure whether to pursue an update to "smithay-clipboard" 0.7.0 in "clipboard_wayland" in the hope that fixes it, or it's a compiler issue affecting multiple versions that I should pursue in rustc.

hecrj/window_clipboard#23 has an update for clipboard_wayland.

But an internal compiler error is always a Rustc bug.

[andrewdavidmackenzie]

Reported here: rust-lang/rust#119126

I guess you can leave open to track the issue/fix, or close - as you prefer.

[elinorbgr]

Looks like the rustc bug is fixed, so I'm going to close this. Thanks everyone.