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Strange Compiler Bug

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A-incr-comp C-bug I-ICE S-needs-repro T-compiler
Dominant language
Rust
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Description

I am very sorry, but I cannot seem to reproduce the bug easily.

Using the Diesel ORM and the diesel-derive-enum crate, I was able to make the compiler panic which was certainly unexpected to say the least, to fix the issue I did the sensible thing and ran cargo clean and redid the migrations (diesel migrations redo --all) to make sure the database was in a sane state, that seemed to fix the issue so I cannot get the backtrace. Something interesting to note was that before cleaning out the target directory and restoring the database, I tried compiling with the release profile for the first time and that worked, too.

Everything seemed to work before adding the diesel-derive-enum crate.

Code
CREATE TYPE access_level AS ENUM (
    'a', 
    'b',
    'c',
    'd'
);

CREATE TABLE users (
    id SERIAL PRIMARY KEY,
    
    -- Other fields omitted...
    
    access_level access_level NOT NULL
);

use diesel::prelude::*;

use crate::db::schema::users;

#[derive(Debug, diesel_derive_enum::DbEnum)]
#[ExistingTypePath = "crate::db::schema::sql_types::AccessLevel"]
pub enum AccessLevel {
    A,
    B,
    C,
    D,
}

#[derive(Debug, Queryable, Selectable, Identifiable)]
#[diesel(table_name = users)]
#[diesel(check_for_backend(diesel::pg::Pg))]
pub struct User {
    pub id: i32,
    
    // Other fields omitted...
    
    pub access_level: AccessLevel,
}
Meta

rustc --version --verbose:

rustc 1.78.0 (9b00956e5 2024-04-29)
binary: rustc
commit-hash: 9b00956e56009bab2aa15d7bff10916599e3d6d6
commit-date: 2024-04-29
host: x86_64-unknown-linux-gnu
release: 1.78.0
LLVM version: 18.1.2
Error output

cargo build

   Compiling api v0.1.0 (/home/bastian/Projects/ULPN/backend/api)
thread 'rustc' panicked at compiler/rustc_middle/src/dep_graph/dep_node.rs:198:17:
Failed to extract DefId: def_kind 811f230faec2c667-a3abd75b66f4a7ff
stack backtrace:
   0:     0x76480cacb892 - std::backtrace_rs::backtrace::libunwind::trace::he4ee80166a02c846
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
   1:     0x76480cacb892 - std::backtrace_rs::backtrace::trace_unsynchronized::h476faccf57e88641
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x76480cacb892 - std::sys_common::backtrace::_print_fmt::h430c922a77e7a59c
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x76480cacb892 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hffecb437d922f988
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x76480cb1ca6c - core::fmt::rt::Argument::fmt::hf3df69369399bfa9
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/core/src/fmt/rt.rs:142:9
   5:     0x76480cb1ca6c - core::fmt::write::hd9a8d7d029f9ea1a
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/core/src/fmt/mod.rs:1153:17
   6:     0x76480cac078f - std::io::Write::write_fmt::h0e1226b2b8d973fe
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/io/mod.rs:1843:15
   7:     0x76480cacb664 - std::sys_common::backtrace::_print::hd2df4a083f6e69b8
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x76480cacb664 - std::sys_common::backtrace::print::he907f6ad7eee41cb
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x76480cace35b - std::panicking::default_hook::{{closure}}::h3926193b61c9ca9b
  10:     0x76480cace0b3 - std::panicking::default_hook::h25ba2457dea68e65
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/panicking.rs:292:9
  11:     0x76480982845d - std[e4dfbc2c3f4b09f1]::panicking::update_hook::<alloc[1adba907b9db1888]::boxed::Box<rustc_driver_impl[24a943716c49befe]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x76480caceac0 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h022ca2c0d8c21c9e
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/alloc/src/boxed.rs:2034:9
  13:     0x76480caceac0 - std::panicking::rust_panic_with_hook::h0ad14d90dcf5224f
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/panicking.rs:783:13
  14:     0x76480cace802 - std::panicking::begin_panic_handler::{{closure}}::h4a1838a06f542647
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/panicking.rs:657:13
  15:     0x76480cacbd66 - std::sys_common::backtrace::__rust_end_short_backtrace::h77cc4dc3567ca904
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x76480cace534 - rust_begin_unwind
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/panicking.rs:645:5
  17:     0x76480cb18f85 - core::panicking::panic_fmt::h940d4fd01a4b4fd1
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/core/src/panicking.rs:72:14
  18:     0x764809cb8132 - <rustc_query_system[475239fef39bf53f]::dep_graph::dep_node::DepNode as rustc_middle[fda44fdb505d3e7f]::dep_graph::dep_node::DepNodeExt>::extract_def_id::{closure#0}
  19:     0x76480aaf7a8d - <rustc_query_system[475239fef39bf53f]::dep_graph::dep_node::DepNode as rustc_middle[fda44fdb505d3e7f]::dep_graph::dep_node::DepNodeExt>::extract_def_id
  20:     0x764809fce7aa - <rustc_query_impl[e4152ad88c3d6c78]::plumbing::query_callback<rustc_query_impl[e4152ad88c3d6c78]::query_impl::def_kind::QueryType>::{closure#0} as core[836963c7c1decc11]::ops::function::FnOnce<(rustc_middle[fda44fdb505d3e7f]::ty::context::TyCtxt, rustc_query_system[475239fef39bf53f]::dep_graph::dep_node::DepNode)>>::call_once
  21:     0x76480aa29055 - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  22:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  23:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  24:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  25:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  26:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  27:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  28:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  29:     0x76480b0c81e2 - rustc_query_system[475239fef39bf53f]::query::plumbing::try_execute_query::<rustc_query_impl[e4152ad88c3d6c78]::DynamicConfig<rustc_query_system[475239fef39bf53f]::query::caches::DefaultCache<rustc_type_ir[6f721bd5614e1944]::canonical::Canonical<rustc_middle[fda44fdb505d3e7f]::ty::context::TyCtxt, rustc_middle[fda44fdb505d3e7f]::ty::ParamEnvAnd<rustc_middle[fda44fdb505d3e7f]::ty::predicate::Predicate>>, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 2usize]>>, false, false, false>, rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt, true>
  30:     0x76480b0c685e - rustc_query_impl[e4152ad88c3d6c78]::query_impl::evaluate_obligation::get_query_incr::__rust_end_short_backtrace
  31:     0x76480796acdd - <rustc_trait_selection[50b41c8253db3482]::traits::fulfill::FulfillProcessor as rustc_data_structures[1326c540ec0dd647]::obligation_forest::ObligationProcessor>::process_obligation
  32:     0x76480aa0d800 - <rustc_data_structures[1326c540ec0dd647]::obligation_forest::ObligationForest<rustc_trait_selection[50b41c8253db3482]::traits::fulfill::PendingPredicateObligation>>::process_obligations::<rustc_trait_selection[50b41c8253db3482]::traits::fulfill::FulfillProcessor>
  33:     0x76480b0b4b25 - <rustc_trait_selection[50b41c8253db3482]::traits::engine::ObligationCtxt>::select_where_possible
  34:     0x76480b033d20 - rustc_hir_analysis[7e49c3c0c7bed18]::check::check::check_item_type
  35:     0x76480b0dc878 - rustc_hir_analysis[7e49c3c0c7bed18]::check::wfcheck::check_well_formed
  36:     0x76480b0db45d - rustc_query_impl[e4152ad88c3d6c78]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4152ad88c3d6c78]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 1usize]>>
  37:     0x76480b0d53bd - rustc_query_system[475239fef39bf53f]::query::plumbing::try_execute_query::<rustc_query_impl[e4152ad88c3d6c78]::DynamicConfig<rustc_query_system[475239fef39bf53f]::query::caches::VecCache<rustc_hir[33aca5c26ba91407]::hir_id::OwnerId, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt, true>
  38:     0x76480b93bb95 - <rustc_query_impl[e4152ad88c3d6c78]::plumbing::query_callback<rustc_query_impl[e4152ad88c3d6c78]::query_impl::check_well_formed::QueryType>::{closure#0} as core[836963c7c1decc11]::ops::function::FnOnce<(rustc_middle[fda44fdb505d3e7f]::ty::context::TyCtxt, rustc_query_system[475239fef39bf53f]::dep_graph::dep_node::DepNode)>>::call_once
  39:     0x76480aa29055 - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  40:     0x76480aa28680 - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  41:     0x76480b30affa - rustc_query_system[475239fef39bf53f]::query::plumbing::ensure_must_run::<rustc_query_impl[e4152ad88c3d6c78]::DynamicConfig<rustc_query_system[475239fef39bf53f]::query::caches::DefaultCache<rustc_span[a4517f2b2e65298c]::def_id::LocalModDefId, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  42:     0x76480b30a96a - rustc_query_impl[e4152ad88c3d6c78]::query_impl::check_mod_type_wf::get_query_incr::__rust_end_short_backtrace
  43:     0x76480ab3b7e1 - rustc_hir_analysis[7e49c3c0c7bed18]::check_crate
  44:     0x76480b311ef2 - rustc_interface[ba2b6dc4c96cb491]::passes::analysis
  45:     0x76480b3118e5 - rustc_query_impl[e4152ad88c3d6c78]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4152ad88c3d6c78]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 1usize]>>
  46:     0x76480b89d375 - rustc_query_system[475239fef39bf53f]::query::plumbing::try_execute_query::<rustc_query_impl[e4152ad88c3d6c78]::DynamicConfig<rustc_query_system[475239fef39bf53f]::query::caches::SingleCache<rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt, true>
  47:     0x76480b89cf9c - rustc_query_impl[e4152ad88c3d6c78]::query_impl::analysis::get_query_incr::__rust_end_short_backtrace
  48:     0x76480b5fc814 - rustc_interface[ba2b6dc4c96cb491]::interface::run_compiler::<core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>, rustc_driver_impl[24a943716c49befe]::run_compiler::{closure#0}>::{closure#0}
  49:     0x76480b93eb6e - std[e4dfbc2c3f4b09f1]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[ba2b6dc4c96cb491]::util::run_in_thread_with_globals<rustc_interface[ba2b6dc4c96cb491]::interface::run_compiler<core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>, rustc_driver_impl[24a943716c49befe]::run_compiler::{closure#0}>::{closure#0}, core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>>
  50:     0x76480b93e9ca - <<std[e4dfbc2c3f4b09f1]::thread::Builder>::spawn_unchecked_<rustc_interface[ba2b6dc4c96cb491]::util::run_in_thread_with_globals<rustc_interface[ba2b6dc4c96cb491]::interface::run_compiler<core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>, rustc_driver_impl[24a943716c49befe]::run_compiler::{closure#0}>::{closure#0}, core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>>::{closure#1} as core[836963c7c1decc11]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  51:     0x76480cad8145 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h19b9e642d37e7272
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/alloc/src/boxed.rs:2020:9
  52:     0x76480cad8145 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h97265befc434d3ae
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/alloc/src/boxed.rs:2020:9
  53:     0x76480cad8145 - std::sys::pal::unix::thread::Thread::new::thread_start::h420dad5cf01a9f35
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys/pal/unix/thread.rs:108:17
  54:     0x7648068aa1cf - <unknown>
  55:     0x76480692b6ec - <unknown>
  56:                0x0 - <unknown>

error: 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 1.78.0 (9b00956e5 2024-04-29) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type bin -C embed-bitcode=no -C debuginfo=2 -C incremental=[REDACTED]

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

query stack during panic:
#0 [evaluate_obligation] evaluating trait selection obligation `diesel::query_builder::select_statement::SelectStatement<diesel::query_builder::from_clause::FromClause<db::schema::users::table>>: diesel::associations::HasTable`  |  = note: this failure-note originates in the macro `diesel::table` (in Nightly builds, run with -Z macro-backtrace for more info)

#1 [check_well_formed] checking that `db::schema::users::<impl at api/src/db/schema.rs:54:1: 66:2>` is well-formed
#2 [analysis] running analysis passes on this crate
end of query stack
there was a panic while trying to force a dep node
try_mark_green dep node stack:
#0 representability(cece6b17da45e6a8-8eb3b1ae451f9421)
#1 adt_sized_constraint(thread 'rustc' panicked at compiler/rustc_middle/src/dep_graph/dep_node.rs:198:17:
Failed to extract DefId: adt_sized_constraint 811f230faec2c667-a3abd75b66f4a7ff
stack backtrace:
   0:     0x76480cacb892 - std::backtrace_rs::backtrace::libunwind::trace::he4ee80166a02c846
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
   1:     0x76480cacb892 - std::backtrace_rs::backtrace::trace_unsynchronized::h476faccf57e88641
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x76480cacb892 - std::sys_common::backtrace::_print_fmt::h430c922a77e7a59c
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x76480cacb892 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hffecb437d922f988
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x76480cb1ca6c - core::fmt::rt::Argument::fmt::hf3df69369399bfa9
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/core/src/fmt/rt.rs:142:9
   5:     0x76480cb1ca6c - core::fmt::write::hd9a8d7d029f9ea1a
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/core/src/fmt/mod.rs:1153:17
   6:     0x76480cac078f - std::io::Write::write_fmt::h0e1226b2b8d973fe
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/io/mod.rs:1843:15
   7:     0x76480cacb664 - std::sys_common::backtrace::_print::hd2df4a083f6e69b8
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x76480cacb664 - std::sys_common::backtrace::print::he907f6ad7eee41cb
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x76480cace35b - std::panicking::default_hook::{{closure}}::h3926193b61c9ca9b
  10:     0x76480cace0b3 - std::panicking::default_hook::h25ba2457dea68e65
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/panicking.rs:292:9
  11:     0x76480982845d - std[e4dfbc2c3f4b09f1]::panicking::update_hook::<alloc[1adba907b9db1888]::boxed::Box<rustc_driver_impl[24a943716c49befe]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x76480caceac0 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h022ca2c0d8c21c9e
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/alloc/src/boxed.rs:2034:9
  13:     0x76480caceac0 - std::panicking::rust_panic_with_hook::h0ad14d90dcf5224f
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/panicking.rs:783:13
  14:     0x76480cace802 - std::panicking::begin_panic_handler::{{closure}}::h4a1838a06f542647
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/panicking.rs:657:13
  15:     0x76480cacbd66 - std::sys_common::backtrace::__rust_end_short_backtrace::h77cc4dc3567ca904
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x76480cace534 - rust_begin_unwind
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/panicking.rs:645:5
  17:     0x76480cb18f85 - core::panicking::panic_fmt::h940d4fd01a4b4fd1
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/core/src/panicking.rs:72:14
  18:     0x764809cb8132 - <rustc_query_system[475239fef39bf53f]::dep_graph::dep_node::DepNode as rustc_middle[fda44fdb505d3e7f]::dep_graph::dep_node::DepNodeExt>::extract_def_id::{closure#0}
  19:     0x76480aaf7a8d - <rustc_query_system[475239fef39bf53f]::dep_graph::dep_node::DepNode as rustc_middle[fda44fdb505d3e7f]::dep_graph::dep_node::DepNodeExt>::extract_def_id
  20:     0x764809b53641 - rustc_interface[ba2b6dc4c96cb491]::callbacks::dep_node_debug
  21:     0x76480a03b0c7 - <rustc_query_system[475239fef39bf53f]::dep_graph::dep_node::DepNode as core[836963c7c1decc11]::fmt::Debug>::fmt
  22:     0x76480cb1ca6c - core::fmt::rt::Argument::fmt::hf3df69369399bfa9
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/core/src/fmt/rt.rs:142:9
  23:     0x76480cb1ca6c - core::fmt::write::hd9a8d7d029f9ea1a
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/core/src/fmt/mod.rs:1153:17
  24:     0x76480cabe93b - std::io::Write::write_fmt::hb9ae79d0554438ee
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/io/mod.rs:1843:15
  25:     0x76480cabe93b - <&std::io::stdio::Stderr as std::io::Write>::write_fmt::h9b72302c34553b01
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/io/stdio.rs:1008:9
  26:     0x76480cabf18a - <std::io::stdio::Stderr as std::io::Write>::write_fmt::h001307f201a39f70
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/io/stdio.rs:982:9
  27:     0x76480cabf18a - std::io::stdio::print_to::h9270ddabda4b6203
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/io/stdio.rs:1087:21
  28:     0x76480cabf18a - std::io::stdio::_eprint::hf581b85e5d5b46ce
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/io/stdio.rs:1175:5
  29:     0x764809f73013 - rustc_query_system[475239fef39bf53f]::dep_graph::graph::print_markframe_trace::<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>
  30:     0x76480aa29725 - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  31:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  32:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  33:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  34:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  35:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  36:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  37:     0x76480aa28fbd - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  38:     0x76480b0c81e2 - rustc_query_system[475239fef39bf53f]::query::plumbing::try_execute_query::<rustc_query_impl[e4152ad88c3d6c78]::DynamicConfig<rustc_query_system[475239fef39bf53f]::query::caches::DefaultCache<rustc_type_ir[6f721bd5614e1944]::canonical::Canonical<rustc_middle[fda44fdb505d3e7f]::ty::context::TyCtxt, rustc_middle[fda44fdb505d3e7f]::ty::ParamEnvAnd<rustc_middle[fda44fdb505d3e7f]::ty::predicate::Predicate>>, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 2usize]>>, false, false, false>, rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt, true>
  39:     0x76480b0c685e - rustc_query_impl[e4152ad88c3d6c78]::query_impl::evaluate_obligation::get_query_incr::__rust_end_short_backtrace
  40:     0x76480796acdd - <rustc_trait_selection[50b41c8253db3482]::traits::fulfill::FulfillProcessor as rustc_data_structures[1326c540ec0dd647]::obligation_forest::ObligationProcessor>::process_obligation
  41:     0x76480aa0d800 - <rustc_data_structures[1326c540ec0dd647]::obligation_forest::ObligationForest<rustc_trait_selection[50b41c8253db3482]::traits::fulfill::PendingPredicateObligation>>::process_obligations::<rustc_trait_selection[50b41c8253db3482]::traits::fulfill::FulfillProcessor>
  42:     0x76480b0b4b25 - <rustc_trait_selection[50b41c8253db3482]::traits::engine::ObligationCtxt>::select_where_possible
  43:     0x76480b033d20 - rustc_hir_analysis[7e49c3c0c7bed18]::check::check::check_item_type
  44:     0x76480b0dc878 - rustc_hir_analysis[7e49c3c0c7bed18]::check::wfcheck::check_well_formed
  45:     0x76480b0db45d - rustc_query_impl[e4152ad88c3d6c78]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4152ad88c3d6c78]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 1usize]>>
  46:     0x76480b0d53bd - rustc_query_system[475239fef39bf53f]::query::plumbing::try_execute_query::<rustc_query_impl[e4152ad88c3d6c78]::DynamicConfig<rustc_query_system[475239fef39bf53f]::query::caches::VecCache<rustc_hir[33aca5c26ba91407]::hir_id::OwnerId, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt, true>
  47:     0x76480b93bb95 - <rustc_query_impl[e4152ad88c3d6c78]::plumbing::query_callback<rustc_query_impl[e4152ad88c3d6c78]::query_impl::check_well_formed::QueryType>::{closure#0} as core[836963c7c1decc11]::ops::function::FnOnce<(rustc_middle[fda44fdb505d3e7f]::ty::context::TyCtxt, rustc_query_system[475239fef39bf53f]::dep_graph::dep_node::DepNode)>>::call_once
  48:     0x76480aa29055 - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_previous_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  49:     0x76480aa28680 - <rustc_query_system[475239fef39bf53f]::dep_graph::graph::DepGraphData<rustc_middle[fda44fdb505d3e7f]::dep_graph::DepsType>>::try_mark_green::<rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  50:     0x76480b30affa - rustc_query_system[475239fef39bf53f]::query::plumbing::ensure_must_run::<rustc_query_impl[e4152ad88c3d6c78]::DynamicConfig<rustc_query_system[475239fef39bf53f]::query::caches::DefaultCache<rustc_span[a4517f2b2e65298c]::def_id::LocalModDefId, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt>
  51:     0x76480b30a96a - rustc_query_impl[e4152ad88c3d6c78]::query_impl::check_mod_type_wf::get_query_incr::__rust_end_short_backtrace
  52:     0x76480ab3b7e1 - rustc_hir_analysis[7e49c3c0c7bed18]::check_crate
  53:     0x76480b311ef2 - rustc_interface[ba2b6dc4c96cb491]::passes::analysis
  54:     0x76480b3118e5 - rustc_query_impl[e4152ad88c3d6c78]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e4152ad88c3d6c78]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 1usize]>>
  55:     0x76480b89d375 - rustc_query_system[475239fef39bf53f]::query::plumbing::try_execute_query::<rustc_query_impl[e4152ad88c3d6c78]::DynamicConfig<rustc_query_system[475239fef39bf53f]::query::caches::SingleCache<rustc_middle[fda44fdb505d3e7f]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[e4152ad88c3d6c78]::plumbing::QueryCtxt, true>
  56:     0x76480b89cf9c - rustc_query_impl[e4152ad88c3d6c78]::query_impl::analysis::get_query_incr::__rust_end_short_backtrace
  57:     0x76480b5fc814 - rustc_interface[ba2b6dc4c96cb491]::interface::run_compiler::<core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>, rustc_driver_impl[24a943716c49befe]::run_compiler::{closure#0}>::{closure#0}
  58:     0x76480b93eb6e - std[e4dfbc2c3f4b09f1]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[ba2b6dc4c96cb491]::util::run_in_thread_with_globals<rustc_interface[ba2b6dc4c96cb491]::interface::run_compiler<core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>, rustc_driver_impl[24a943716c49befe]::run_compiler::{closure#0}>::{closure#0}, core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>>
  59:     0x76480b93e9ca - <<std[e4dfbc2c3f4b09f1]::thread::Builder>::spawn_unchecked_<rustc_interface[ba2b6dc4c96cb491]::util::run_in_thread_with_globals<rustc_interface[ba2b6dc4c96cb491]::interface::run_compiler<core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>, rustc_driver_impl[24a943716c49befe]::run_compiler::{closure#0}>::{closure#0}, core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[836963c7c1decc11]::result::Result<(), rustc_span[a4517f2b2e65298c]::ErrorGuaranteed>>::{closure#1} as core[836963c7c1decc11]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  60:     0x76480cad8145 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h19b9e642d37e7272
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/alloc/src/boxed.rs:2020:9
  61:     0x76480cad8145 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h97265befc434d3ae
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/alloc/src/boxed.rs:2020:9
  62:     0x76480cad8145 - std::sys::pal::unix::thread::Thread::new::thread_start::h420dad5cf01a9f35
                               at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/std/src/sys/pal/unix/thread.rs:108:17
  63:     0x7648068aa1cf - <unknown>
  64:     0x76480692b6ec - <unknown>
  65:                0x0 - <unknown>

error: 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 1.78.0 (9b00956e5 2024-04-29) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type bin -C embed-bitcode=no -C debuginfo=2 -C incremental=[REDACTED]

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

query stack during panic:
#0 [evaluate_obligation] evaluating trait selection obligation `diesel::query_builder::select_statement::SelectStatement<diesel::query_builder::from_clause::FromClause<db::schema::users::table>>: diesel::associations::HasTable`  |  = note: this failure-note originates in the macro `diesel::table` (in Nightly builds, run with -Z macro-backtrace for more info)

#1 [check_well_formed] checking that `db::schema::users::<impl at api/src/db/schema.rs:54:1: 66:2>` is well-formed
#2 [analysis] running analysis passes on this crate
end of query stack
there was a panic while trying to force a dep node
try_mark_green dep node stack:
#0 check_mod_type_wf(api[811f]::db::schema::users)
end of try_mark_green dep node stack
error: could not compile `api` (bin "api")
Backtrace 

<backtrace>

Contributor guide

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by recreating the reported Diesel and diesel-derive-enum example with Rust 1.78.0 and running cargo build; the available failure points to compiler/rustc_middle/src/dep_graph/dep_node.rs, but the reporter could not preserve a reproducible case or backtrace. Done requires a minimal reproduction and confirmation that the compiler no longer panics on it.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
15/100

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