(report in progress) panic from `cargo check`

[nejucomo]

Apologies, this is a report in progress, because I'm rushing between tasks. I intend to fill out more detail later… Currently I've pasted the stack trace.

Code

<code>

Meta

rustc --version --verbose:

rustc 1.62.1 (e092d0b6b 2022-07-16)
binary: rustc
commit-hash: e092d0b6b43f2de967af0887873151bb1c0b18d3
commit-date: 2022-07-16
host: x86_64-unknown-linux-gnu
release: 1.62.1
LLVM version: 14.0.5

Error output

    Checking zcashd-config v0.1.0 (/home/nack/zc/zcashd-config)
thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `51807972367`,
 right: `1002111927320821928687967599834759150`', compiler/rustc_query_impl/src/on_disk_cache.rs:540:5
stack backtrace:
   0:     0x7f6d072f1fbd - std::backtrace_rs::backtrace::libunwind::trace::h8e036432725b1c57
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f6d072f1fbd - std::backtrace_rs::backtrace::trace_unsynchronized::h4f83092254c85869
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f6d072f1fbd - std::sys_common::backtrace::_print_fmt::h9728b5e056a3ece3
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7f6d072f1fbd - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h48bb4bd2928827d2
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7f6d0734dc4c - core::fmt::write::h909e69a2c24f44cc
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/core/src/fmt/mod.rs:1196:17
   5:     0x7f6d072e3731 - std::io::Write::write_fmt::h7f4b8ab8af89e9ef
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/io/mod.rs:1654:15
   6:     0x7f6d072f4cd5 - std::sys_common::backtrace::_print::hff4838ebf14a2171
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7f6d072f4cd5 - std::sys_common::backtrace::print::h2499280374189ad9
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7f6d072f4cd5 - std::panicking::default_hook::{{closure}}::h8b270fc55eeb284e
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/panicking.rs:295:22
   9:     0x7f6d072f4949 - std::panicking::default_hook::h3217e229d6e9d13c
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/panicking.rs:314:9
  10:     0x7f6d07ab9571 - rustc_driver[b4654d3c4d4292dd]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f6d072f54a6 - std::panicking::rust_panic_with_hook::h9acb8048b738d2e0
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/panicking.rs:702:17
  12:     0x7f6d072f52a7 - std::panicking::begin_panic_handler::{{closure}}::h70f3b839526af6dc
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/panicking.rs:588:13
  13:     0x7f6d072f2474 - std::sys_common::backtrace::__rust_end_short_backtrace::h1ecf2cee857fbe0a
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/sys_common/backtrace.rs:138:18
  14:     0x7f6d072f4fd9 - rust_begin_unwind
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/panicking.rs:584:5
  15:     0x7f6d072ba253 - core::panicking::panic_fmt::h9f8393e7fd56d655
                              at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/core/src/panicking.rs:142:14
  16:     0x7f6d0734a9f8 - core::panicking::assert_failed_inner::hcccad0cc57f591b3
  17:     0x7f6d0838e3fc - core[dbea6f494faa966e]::panicking::assert_failed::<u128, u128>
  18:     0x7f6d08387ffe - <rustc_query_impl[4e222bcb6a32466d]::on_disk_cache::OnDiskCache as rustc_middle[74ddc95a19f9493f]::ty::context::OnDiskCache>::new
  19:     0x7f6d09b75f73 - rustc_incremental[136751e6962d79f4]::persist::load::load_query_result_cache::<rustc_query_impl[4e222bcb6a32466d]::on_disk_cache::OnDiskCache>
  20:     0x7f6d09b56b9c - rustc_interface[9f664daa3237129]::passes::create_global_ctxt
  21:     0x7f6d09b7a93d - <rustc_interface[9f664daa3237129]::queries::Queries>::global_ctxt
  22:     0x7f6d09b226a2 - <rustc_interface[9f664daa3237129]::interface::Compiler>::enter::<rustc_driver[b4654d3c4d4292dd]::run_compiler::{closure#1}::{closure#2}, core[dbea6f494faa966e]::result::Result<core[dbea6f494faa966e]::option::Option<rustc_interface[9f664daa3237129]::queries::Linker>, rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>>
  23:     0x7f6d09b4b09f - rustc_span[1d0b4d44d1f53955]::with_source_map::<core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>, rustc_interface[9f664daa3237129]::interface::create_compiler_and_run<core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>, rustc_driver[b4654d3c4d4292dd]::run_compiler::{closure#1}>::{closure#1}>
  24:     0x7f6d09b23374 - rustc_interface[9f664daa3237129]::interface::create_compiler_and_run::<core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>, rustc_driver[b4654d3c4d4292dd]::run_compiler::{closure#1}>
  25:     0x7f6d09b20c12 - <scoped_tls[ab1554bfb6e7ab15]::ScopedKey<rustc_span[1d0b4d44d1f53955]::SessionGlobals>>::set::<rustc_interface[9f664daa3237129]::interface::run_compiler<core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>, rustc_driver[b4654d3c4d4292dd]::run_compiler::{closure#1}>::{closure#0}, core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>>
  26:     0x7f6d09b37dff - std[8996aeeb2a45fe64]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[9f664daa3237129]::util::run_in_thread_pool_with_globals<rustc_interface[9f664daa3237129]::interface::run_compiler<core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>, rustc_driver[b4654d3c4d4292dd]::run_compiler::{closure#1}>::{closure#0}, core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>>::{closure#0}, core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>>
  27:     0x7f6d09b37f39 - <<std[8996aeeb2a45fe64]::thread::Builder>::spawn_unchecked_<rustc_interface[9f664daa3237129]::util::run_in_thread_pool_with_globals<rustc_interface[9f664daa3237129]::interface::run_compiler<core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>, rustc_driver[b4654d3c4d4292dd]::run_compiler::{closure#1}>::{closure#0}, core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>>::{closure#0}, core[dbea6f494faa966e]::result::Result<(), rustc_errors[4633ef6e4608f9c1]::ErrorGuaranteed>>::{closure#1} as core[dbea6f494faa966e]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  28:     0x7f6d072ff3c3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h191d5c5ea3edb31d
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/alloc/src/boxed.rs:1872:9
  29:     0x7f6d072ff3c3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h42ef7cb2ae640a31
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/alloc/src/boxed.rs:1872:9
  30:     0x7f6d072ff3c3 - std::sys::unix::thread::Thread::new::thread_start::he47f7169665dab60
                               at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/sys/unix/thread.rs:108:17
  31:     0x7f6d07227ea7 - start_thread
  32:     0x7f6d0714adef - clone
  33:                0x0 - <unknown>

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 1.62.1 (e092d0b6b 2022-07-16) running on x86_64-unknown-linux-gnu

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

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

Backtrace

<backtrace>

[Noratrieb]

This report is sadly not really actionable without any reproduction, just a usual incremental bug.

[saethlin]

As far as I can tell, the ICE reported in this issue is caused by another process damaging rustc's build artifacts or by a buggy filesystem. That other process could be anything from an IDE running the compiler at the same time as a manual build to a find-and-replace that accidentally edits files in the target directory.

#124686 contains a mitigation for this situation; the compiler now has a crude way to detect and ignore damaged incremental compilation files. You will still get a warning about the damaged file, but the build should proceed normally. That change shipped in Rust 1.80 which released today, so I am closing this issue and a few others which as far as I can tell all have the same root cause. You shouldn't see this ICE anymore, but please file a new issue if you see something like it on 1.80 or later.