rustdoc: `cargo +nightly doc` panics when documenting a library that re-export std

[celinval]

I tried to create a minimum example from an issue we've seen in our project (https://github.com/model-checking/kani). I tried running:

cargo +nightly doc

On the following crate:

[package]
name = "std-override"
version = "0.0.1"
edition = "2021"
license = "MIT OR Apache-2.0"

[dependencies]

src/lib.rs:

// re-export all std symbols
pub use std::*;

#[macro_export]
macro_rules! print {
    ($($x:tt)*) =>  { };
}

#[macro_export]
macro_rules! eprint {
    ($($x:tt)*) =>  { };
}

#[macro_export]
macro_rules! println {
    ($($x:tt)*) =>  { };
}

#[macro_export]
macro_rules! eprintln {
    ($($x:tt)*) =>  { };
}

#[macro_export]
macro_rules! unreachable {
    ($($x:tt)*) =>  { };
}

#[macro_export]
macro_rules! panic {
    ($($x:tt)*) =>  { };
}

I expected to see this happen: The command should succeed.

Instead, this happened: It crashed with an ICE

Meta

rustc +nightly --version --verbose:

rustc 1.64.0-nightly (1c7b36d4d 2022-07-12)
binary: rustc
commit-hash: 1c7b36d4db582cb47513a6c7176baaec1c3346ab
commit-date: 2022-07-12
host: x86_64-unknown-linux-gnu
release: 1.64.0-nightly
LLVM version: 14.0.6

Backtrace

 Documenting std-override v0.0.1 (/tmp/doc-bug)
thread 'rustc' panicked at 'no entry found for key', src/librustdoc/passes/collect_intra_doc_links.rs:777:16
stack backtrace:
   0:     0x7fbeaa8ca7c0 - std::backtrace_rs::backtrace::libunwind::trace::hf2d478307f174bf8
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   1:     0x7fbeaa8ca7c0 - std::backtrace_rs::backtrace::trace_unsynchronized::h711075c80b4b15c0
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fbeaa8ca7c0 - std::sys_common::backtrace::_print_fmt::hebeecd7b360baf82
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7fbeaa8ca7c0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h136680251e065964
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7fbeaa923d9c - core::fmt::write::h21802877aced75ae
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/core/src/fmt/mod.rs:1198:17
   5:     0x7fbeaa8bbf85 - std::io::Write::write_fmt::hfcde2a3cccecf969
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/io/mod.rs:1672:15
   6:     0x7fbeaa8cd451 - std::sys_common::backtrace::_print::h54991e5c3bc938cb
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7fbeaa8cd451 - std::sys_common::backtrace::print::h9ca61c0ed4272627
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7fbeaa8cd451 - std::panicking::default_hook::{{closure}}::h26c10b5c3b2bea64
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/panicking.rs:295:22
   9:     0x7fbeaa8cd123 - std::panicking::default_hook::hb3cbebc52bbac72e
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/panicking.rs:314:9
  10:     0x7fbeab0f2a84 - rustc_driver[9f14ed6a3a961535]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7fbeaa8cdc26 - std::panicking::rust_panic_with_hook::h0d09718c1ae4132d
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/panicking.rs:702:17
  12:     0x7fbeaa8cda77 - std::panicking::begin_panic_handler::{{closure}}::h1010bf1f46fb8722
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/panicking.rs:588:13
  13:     0x7fbeaa8caca4 - std::sys_common::backtrace::__rust_end_short_backtrace::h60da120d1ee80789
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/sys_common/backtrace.rs:138:18
  14:     0x7fbeaa8cd7a2 - rust_begin_unwind
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/panicking.rs:584:5
  15:     0x7fbeaa891ae3 - core::panicking::panic_fmt::h7c2f25a656c170f4
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/core/src/panicking.rs:142:14
  16:     0x7fbeaa9209c1 - core::panicking::panic_display::hf66b1e5852f4956b
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/core/src/panicking.rs:72:5
  17:     0x7fbeaa92096b - core::panicking::panic_str::hc22b70c63809db11
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/core/src/panicking.rs:56:5
  18:     0x7fbeaa891956 - core::option::expect_failed::h477c4e9e6d80605f
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/core/src/option.rs:1874:5
  19:     0x5650a910bf71 - rustdoc[482f73a88d1d5c19]::passes::collect_intra_doc_links::resolve_associated_trait_item
  20:     0x5650a910ad2e - <rustdoc[482f73a88d1d5c19]::passes::collect_intra_doc_links::LinkCollector>::resolve_associated_item
  21:     0x5650a9108e71 - <rustdoc[482f73a88d1d5c19]::passes::collect_intra_doc_links::LinkCollector>::resolve
  22:     0x5650a910dc0f - <rustdoc[482f73a88d1d5c19]::passes::collect_intra_doc_links::LinkCollector as rustdoc[482f73a88d1d5c19]::visit::DocVisitor>::visit_item
  23:     0x5650a9119eca - <rustdoc[482f73a88d1d5c19]::passes::collect_intra_doc_links::LinkCollector as rustdoc[482f73a88d1d5c19]::visit::DocVisitor>::visit_inner_recur
  24:     0x5650a9110cfe - <rustdoc[482f73a88d1d5c19]::passes::collect_intra_doc_links::LinkCollector as rustdoc[482f73a88d1d5c19]::visit::DocVisitor>::visit_item
  25:     0x5650a910789c - rustdoc[482f73a88d1d5c19]::passes::collect_intra_doc_links::collect_intra_doc_links
  26:     0x5650a91ef064 - <rustc_session[26041ce061f99353]::session::Session>::time::<rustdoc[482f73a88d1d5c19]::clean::types::Crate, rustdoc[482f73a88d1d5c19]::core::run_global_ctxt::{closure#8}>
  27:     0x5650a9098e5e - rustdoc[482f73a88d1d5c19]::core::run_global_ctxt
  28:     0x5650a91ef4bf - <rustc_session[26041ce061f99353]::session::Session>::time::<(rustdoc[482f73a88d1d5c19]::clean::types::Crate, rustdoc[482f73a88d1d5c19]::config::RenderOptions, rustdoc[482f73a88d1d5c19]::formats::cache::Cache), rustdoc[482f73a88d1d5c19]::main_options::{closure#0}::{closure#0}::{closure#1}::{closure#0}>
  29:     0x5650a912812c - <rustc_interface[dc3158545dad61e1]::passes::QueryContext>::enter::<rustdoc[482f73a88d1d5c19]::main_options::{closure#0}::{closure#0}::{closure#1}, core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>>
  30:     0x5650a90ab53a - <rustc_interface[dc3158545dad61e1]::interface::Compiler>::enter::<rustdoc[482f73a88d1d5c19]::main_options::{closure#0}::{closure#0}, core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>>
  31:     0x5650a9284c63 - rustc_span[b540c10ca4ad3e15]::with_source_map::<core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>, rustc_interface[dc3158545dad61e1]::interface::create_compiler_and_run<core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>, rustdoc[482f73a88d1d5c19]::main_options::{closure#0}>::{closure#1}>
  32:     0x5650a90d898b - rustc_interface[dc3158545dad61e1]::interface::create_compiler_and_run::<core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>, rustdoc[482f73a88d1d5c19]::main_options::{closure#0}>
  33:     0x5650a90a9dd2 - rustdoc[482f73a88d1d5c19]::main_options
  34:     0x5650a9125d6b - <scoped_tls[69c5c7af7bad0e11]::ScopedKey<rustc_span[b540c10ca4ad3e15]::SessionGlobals>>::set::<rustdoc[482f73a88d1d5c19]::main_args::{closure#0}, core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>>
  35:     0x5650a92034ef - std[aea08c340574f8b]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[dc3158545dad61e1]::util::run_in_thread_pool_with_globals<rustdoc[482f73a88d1d5c19]::main_args::{closure#0}, core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>>::{closure#0}, core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>>
  36:     0x5650a913a939 - <<std[aea08c340574f8b]::thread::Builder>::spawn_unchecked_<rustc_interface[dc3158545dad61e1]::util::run_in_thread_pool_with_globals<rustdoc[482f73a88d1d5c19]::main_args::{closure#0}, core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>>::{closure#0}, core[b41f5196d70b7330]::result::Result<(), rustc_errors[b51a8ee25e0d94c9]::ErrorGuaranteed>>::{closure#1} as core[b41f5196d70b7330]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  37:     0x7fbeaa8d7673 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h304119b3abe2df49
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/alloc/src/boxed.rs:1934:9
  38:     0x7fbeaa8d7673 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2a0513e129c0d255
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/alloc/src/boxed.rs:1934:9
  39:     0x7fbeaa8d7673 - std::sys::unix::thread::Thread::new::thread_start::h004b08da95a1ac4a
                               at /rustc/1c7b36d4db582cb47513a6c7176baaec1c3346ab/library/std/src/sys/unix/thread.rs:108:17
  40:     0x7fbea9fec6db - start_thread
                               at /build/glibc-CVJwZb/glibc-2.27/nptl/pthread_create.c:463
  41:     0x7fbea997761f - clone
                               at /build/glibc-CVJwZb/glibc-2.27/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
  42:                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 1.64.0-nightly (1c7b36d4d 2022-07-12) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib

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

query stack during panic:
end of query stack
error: could not document `std-override`

Caused by:
  process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name std_override src/lib.rs -o /tmp/doc-bug/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat -C metadata=a2ed46871ef5d396 -L dependency=/tmp/doc-bug/target/debug/deps --crate-version 0.0.1` (exit status: 101)

[celinval]

This issue may be related to #98032, however I can only reproduce it on the nightly build. On the stable channel, rustdoc succeeds.

$ cargo doc
 Documenting std-override v0.0.1 (/tmp/doc-bug)
    Finished dev [unoptimized + debuginfo] target(s) in 4.76s

$ rustc --version --verbose
rustc 1.62.0 (a8314ef7d 2022-06-27)
binary: rustc
commit-hash: a8314ef7d0ec7b75c336af2c9857bfaf43002bfc
commit-date: 2022-06-27
host: x86_64-unknown-linux-gnu
release: 1.62.0
LLVM version: 14.0.5

[jyn514]

cc @petrochenkov

[jyn514]

@celinval does this reproduce on beta?

[notriddle]

@jyn514

I know I'm not celinval, but I've been able to reduce this to a test case, and yeah, it reproduces on beta.