cycle detected when optimizing MIR

[flippette]

Code

I tried installing dioxus-cli

cargo install -f dioxus-cli

The crate failed to build with this error

error[E0391]: cycle detected when optimizing MIR for `ExprExt::cast_to_bool`                                                                                                  
   --> /home/flippette/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/swc_ecma_utils-7.0.0/src/lib.rs:742:5                                                             
    |
742 |     fn cast_to_bool(&self, ctx: &ExprCtx) -> (Purity, BoolValue) {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
note: ...which requires optimizing MIR for `ExprExt::cast_to_number`...
   --> /home/flippette/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/swc_ecma_utils-7.0.0/src/lib.rs:970:5
    |
970 |     fn cast_to_number(&self, ctx: &ExprCtx) -> (Purity, Value<f64>) {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    = note: ...which again requires optimizing MIR for `ExprExt::cast_to_bool`, completing the cycle
    = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information

For more information about this error, try `rustc --explain E0391`.
error: could not compile `swc_ecma_utils` (lib) due to 1 previous error

Version it worked on

1.90.0-nightly (bdaba05a9 2025-06-27) and before (I've only tested back through 1.89.0-nightly (d4e1159b8 2025-06-21))

Version with regression

1.90.0-nightly (11ad40bb8 2025-06-28) through to 1.90.0-nightly (5adb489a8 2025-07-05)

Backtrace

N/A

@rustbot modify labels: +regression-from-stable-to-nightly -regression-untriaged

[compiler-errors]

@flippette:

If you have time, could you test this with cargo bisect-rustc?

If not, could you please share a backtrace with env RUSTFLAGS=-Ztreat-err-as-bug=1? I would like to see the whole stack trace of the error.

[cyrgani]

working on reducing this

[saethlin]

Bisection points to #142625

[compiler-errors]

cc @cjgillot

[saethlin]

Backtrace is

thread 'rustc' panicked at compiler/rustc_errors/src/lib.rs:1839:17:
aborting due to `-Z treat-err-as-bug=1`        
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/5adb489a8034f7b56b29f3b28af0813c866f679c/library/std/src/panicking.rs:697:5                                                                                                                       1: core::panicking::panic_fmt                                                                                                                                                                                                   at /rustc/5adb489a8034f7b56b29f3b28af0813c866f679c/library/core/src/panicking.rs:75:14                                                                                                                      2: <rustc_errors::DiagCtxtInner>::panic_if_treat_err_as_bug                                                                                                                                                           3: <rustc_errors::DiagCtxtInner>::emit_diagnostic::{closure#3}                                                                                                                                                        4: rustc_interface::callbacks::track_diagnostic::<core::option::Option<rustc_span::ErrorGuaranteed>>::{closure#0}                                                                                                     5: rustc_interface::callbacks::track_diagnostic::<core::option::Option<rustc_span::ErrorGuaranteed>>                                                                                                                  6: <rustc_errors::DiagCtxtInner>::emit_diagnostic                                                                                                                                                                     7: <rustc_errors::DiagCtxtHandle>::emit_diagnostic                                                                                                                                                                    8: <rustc_span::ErrorGuaranteed as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee
   9: rustc_query_system::query::plumbing::mk_cycle::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_type_ir::canonical::CanonicalQueryInput<rustc_middle::ty::context::TyCtxt,
 rustc_middle::ty::ParamEnvAnd<rustc_middle::traits::query::type_op::Normalize<rustc_middle::ty::predicate::Clause>>>, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing:
:QueryCtxt>
  10: rustc_query_system::query::plumbing::cycle_error::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::q
uery::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
  11: <rustc_middle::ty::context::TyCtxt>::instance_mir
  12: rustc_mir_transform::inline::process_blocks::<rustc_mir_transform::inline::NormalInliner>
  13: <rustc_mir_transform::inline::Inline as rustc_mir_transform::pass_manager::MirPass>::run_pass
  14: rustc_mir_transform::run_optimization_passes
  15: rustc_mir_transform::optimized_mir
      [... omitted 1 frame ...]
  16: <rustc_middle::ty::context::TyCtxt>::instance_mir
  17: rustc_mir_transform::inline::process_blocks::<rustc_mir_transform::inline::NormalInliner>
  18: <rustc_mir_transform::inline::Inline as rustc_mir_transform::pass_manager::MirPass>::run_pass
  19: rustc_mir_transform::run_optimization_passes
  20: rustc_mir_transform::optimized_mir
      [... omitted 1 frame ...]
  21: <rustc_metadata::rmeta::encoder::EncodeContext>::encode_crate_root
  22: <rustc_metadata::rmeta::encoder::encode_metadata::{closure#3} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, &std::path::Path)>>::call_once
  23: rustc_metadata::rmeta::encoder::encode_metadata 
  24: rustc_metadata::fs::encode_and_write_metadata
  25: <rustc_interface::queries::Linker>::codegen_and_build_linker
  26: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
  27: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}