BUG: End of Query Stack

[grantkee]

Scenario:

I ran my usual cargo +nightly fmt using rustfmt 1.7.0-nightly (0ecbd060 2024-02-25). The compiler asked me to submit a bug report, so I decided to share.

Output

me@computer telcoin-network % cargo +nightly fmt
thread 'main' panicked at src/tools/rustfmt/src/parse/session.rs:42:9:
silent emitter attempted to translate a diagnostic
stack backtrace:
   0:        0x10373ef9c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hab3f53d2d8212ddd
   1:        0x103783398 - core::fmt::write::h0d0a687663f48932
   2:        0x1037352c4 - std::io::Write::write_fmt::h79b31fb1b26d1d26
   3:        0x10373edd8 - std::sys_common::backtrace::print::h63e6d322e19f4801
   4:        0x1037416f8 - std::panicking::default_hook::{{closure}}::h9349ab3cdb5da91c
   5:        0x1037413dc - std::panicking::default_hook::h38cfb5d7f682af71
   6:        0x10cc57960 - std[11477bd025474483]::panicking::update_hook::<alloc[f9d6debfd87887c]::boxed::Box<rustc_driver_impl[55162aa11c5af315]::install_ice_hook::{closure#0}>>::{closure#0}
   7:        0x10374212c - std::panicking::rust_panic_with_hook::hba6149685af3b41f
   8:        0x103741ac4 - std::panicking::begin_panic_handler::{{closure}}::h43fe5d8d89dcb2a4
   9:        0x10373f428 - std::sys_common::backtrace::__rust_end_short_backtrace::h85585bc7dd9092f8
  10:        0x103741868 - _rust_begin_unwind
  11:        0x10379c734 - core::panicking::panic_fmt::hfbac5bdaf98aee43
  12:        0x10259e904 - <rustfmt_nightly[364e0ee372b542d7]::parse::session::SilentEmitter as rustc_errors[ccfcc51380d11a84]::translation::Translate>::fallback_fluent_bundle
  13:        0x102593a68 - <rustfmt_nightly[364e0ee372b542d7]::parse::session::SilentOnIgnoredFilesEmitter as rustc_errors[ccfcc51380d11a84]::translation::Translate>::translate_message
  14:        0x10dc1a7d4 - <rustc_errors[ccfcc51380d11a84]::DiagCtxt>::eagerly_translate::<indexmap[6b8b594ed101e88a]::map::iter::Iter<alloc[f9d6debfd87887c]::borrow::Cow<str>, rustc_errors[ccfcc51380d11a84]::diagnostic::DiagnosticArgValue>>
  15:        0x10dbecb34 - <rustc_parse[f87f56ceb18719c7]::errors::UnknownTokenStart as rustc_errors[ccfcc51380d11a84]::diagnostic::IntoDiagnostic>::into_diagnostic
  16:        0x10dc13bc8 - <rustc_parse[f87f56ceb18719c7]::lexer::StringReader>::next_token
  17:        0x10dc10688 - <rustc_parse[f87f56ceb18719c7]::lexer::tokentrees::TokenTreesReader>::bump
  18:        0x10dc0f31c - <rustc_parse[f87f56ceb18719c7]::lexer::tokentrees::TokenTreesReader>::parse_token_trees
  19:        0x10dc0f3ac - <rustc_parse[f87f56ceb18719c7]::lexer::tokentrees::TokenTreesReader>::parse_token_trees
  20:        0x10dc0f10c - <rustc_parse[f87f56ceb18719c7]::lexer::tokentrees::TokenTreesReader>::parse_all_token_trees
  21:        0x10dc19b68 - rustc_parse[f87f56ceb18719c7]::maybe_file_to_stream
  22:        0x10dc19828 - rustc_parse[f87f56ceb18719c7]::maybe_source_file_to_parser
  23:        0x10251c984 - <rustfmt_nightly[364e0ee372b542d7]::parse::parser::Parser>::parse_crate
  24:        0x1025331e0 - rustfmt_nightly[364e0ee372b542d7]::formatting::format_project::<rustfmt_nightly[364e0ee372b542d7]::Session<alloc[f9d6debfd87887c]::vec::Vec<u8>>>
  25:        0x1024ca170 - <scoped_tls[3713af7c7bff24ad]::ScopedKey<rustc_span[d21793098b958899]::SessionGlobals>>::with::<<rustfmt_nightly[364e0ee372b542d7]::Session<alloc[f9d6debfd87887c]::vec::Vec<u8>>>::format_input_inner::{closure#0}, core[e0108a028e95754e]::result::Result<rustfmt_nightly[364e0ee372b542d7]::FormatReport, rustfmt_nightly[364e0ee372b542d7]::ErrorKind>>
  26:        0x102526a14 - rustc_span[d21793098b958899]::create_session_if_not_set_then::<core[e0108a028e95754e]::result::Result<rustfmt_nightly[364e0ee372b542d7]::FormatReport, rustfmt_nightly[364e0ee372b542d7]::ErrorKind>, <rustfmt_nightly[364e0ee372b542d7]::Session<alloc[f9d6debfd87887c]::vec::Vec<u8>>>::format_input_inner::{closure#0}>
  27:        0x102526cc4 - std[11477bd025474483]::panicking::try::<core[e0108a028e95754e]::option::Option<rustfmt_nightly[364e0ee372b542d7]::FormattedSnippet>, rustfmt_nightly[364e0ee372b542d7]::format_snippet::{closure#0}>
  28:        0x10251d554 - rustfmt_nightly[364e0ee372b542d7]::format_snippet
  29:        0x10251d94c - rustfmt_nightly[364e0ee372b542d7]::format_code_block
  30:        0x1025687c8 - <rustfmt_nightly[364e0ee372b542d7]::comment::CommentRewrite>::handle_line
  31:        0x102569920 - rustfmt_nightly[364e0ee372b542d7]::comment::rewrite_comment_inner
  32:        0x10256453c - rustfmt_nightly[364e0ee372b542d7]::comment::identify_comment
  33:        0x1025e4fa8 - rustfmt_nightly[364e0ee372b542d7]::attr::rewrite_initial_doc_comments
  34:        0x1024efc74 - <[rustc_ast[ed916f4dc90409f2]::ast::Attribute] as rustfmt_nightly[364e0ee372b542d7]::rewrite::Rewrite>::rewrite
  35:        0x1025f4fb0 - <rustfmt_nightly[364e0ee372b542d7]::visitor::FmtVisitor>::visit_attrs
  36:        0x1025f1f3c - <rustfmt_nightly[364e0ee372b542d7]::visitor::FmtVisitor>::visit_item
  37:        0x1025ebd20 - <rustfmt_nightly[364e0ee372b542d7]::visitor::FmtVisitor>::visit_items_with_reordering
  38:        0x1025f5e20 - <rustfmt_nightly[364e0ee372b542d7]::visitor::FmtVisitor>::format_separate_mod
  39:        0x102444cc8 - rustfmt_nightly[364e0ee372b542d7]::formatting::format_project::<rustfmt_nightly[364e0ee372b542d7]::Session<std[11477bd025474483]::io::stdio::Stdout>>
  40:        0x10243f0b4 - <scoped_tls[3713af7c7bff24ad]::ScopedKey<rustc_span[d21793098b958899]::SessionGlobals>>::with::<<rustfmt_nightly[364e0ee372b542d7]::Session<std[11477bd025474483]::io::stdio::Stdout>>::format_input_inner::{closure#0}, core[e0108a028e95754e]::result::Result<rustfmt_nightly[364e0ee372b542d7]::FormatReport, rustfmt_nightly[364e0ee372b542d7]::ErrorKind>>
  41:        0x10243d2b8 - <scoped_tls[3713af7c7bff24ad]::ScopedKey<rustc_span[d21793098b958899]::SessionGlobals>>::set::<rustc_span[d21793098b958899]::create_session_if_not_set_then<core[e0108a028e95754e]::result::Result<rustfmt_nightly[364e0ee372b542d7]::FormatReport, rustfmt_nightly[364e0ee372b542d7]::ErrorKind>, <rustfmt_nightly[364e0ee372b542d7]::Session<std[11477bd025474483]::io::stdio::Stdout>>::format_input_inner::{closure#0}>::{closure#0}, core[e0108a028e95754e]::result::Result<rustfmt_nightly[364e0ee372b542d7]::FormatReport, rustfmt_nightly[364e0ee372b542d7]::ErrorKind>>
  42:        0x102435840 - rustc_span[d21793098b958899]::create_session_if_not_set_then::<core[e0108a028e95754e]::result::Result<rustfmt_nightly[364e0ee372b542d7]::FormatReport, rustfmt_nightly[364e0ee372b542d7]::ErrorKind>, <rustfmt_nightly[364e0ee372b542d7]::Session<std[11477bd025474483]::io::stdio::Stdout>>::format_input_inner::{closure#0}>
  43:        0x10242be5c - rustfmt[e8c510bd0e8c5fe9]::format_and_emit_report::<std[11477bd025474483]::io::stdio::Stdout>
  44:        0x102441e00 - <rustfmt_nightly[364e0ee372b542d7]::Session<std[11477bd025474483]::io::stdio::Stdout>>::override_config::<rustfmt[e8c510bd0e8c5fe9]::format::{closure#0}, ()>
  45:        0x10242af60 - rustfmt[e8c510bd0e8c5fe9]::execute
  46:        0x102429468 - rustfmt[e8c510bd0e8c5fe9]::main
  47:        0x10243c534 - std[11477bd025474483]::sys_common::backtrace::__rust_begin_short_backtrace::<fn(), ()>
  48:        0x102446ad0 - std[11477bd025474483]::rt::lang_start::<()>::{closure#0}
  49:        0x103727e38 - std::rt::lang_start_internal::h91d67f00e21ccd3b
  50:        0x10242c92c - _main

error: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rustfmt/issues/new?labels=bug

note: please attach the file at `computer/rustc-ice-2024-03-04T14_19_20-1915.txt` to your bug report

query stack during panic:
end of query stack

File attachment for bug report

rustc-ice-2024-03-04T14_19_20-1915.txt

[grantkee]

cargo clean did not fix the issue

[grantkee]

I updated to rustc 1.78.0-nightly (516b6162a 2024-03-03) and got a similar error running cargo +nightly fmt

New File attachment

rustc-ice-2024-03-04T14_28_41-2172.txt

[ytmimi]

@grantkee thanks for the report. Given the error message I'm assuming this is a duplicate of #6082. Luckily work is underway to resolve this one and a fix will hopefully land on nightly soon 🤞🏼

thread 'main' panicked at src/tools/rustfmt/src/parse/session.rs:42:9:
silent emitter attempted to translate a diagnostic