rustdoc JSON ICE with pub extern crate self as <self_crate_name>

[Enselic]

Found via #99919 (comment) and seems like a different issue than #100529

Step-by-step:

1. cd /tmp
2. curl -L https://crates.io/api/v1/crates/easy_proc/0.2.0/download | tar -xz
3. cd easy_proc-0.2.0
4. cargo +nightly rustdoc --lib -- -Z unstable-options --output-format json with rustdoc 1.65.0-nightly (75b7e52e9 2022-08-13)

Expected

rustdoc JSON is built

Actual

/tmp/easy_proc-0.2.0
% cargo +nightly rustdoc --lib -- -Z unstable-options --output-format json
 Documenting easy_proc v0.2.0 (/tmp/easy_proc-0.2.0)
thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `Item { id: Id("0:0:1568"), crate_id: 0, name: Some("easy_proc"), span: Some(Span { filename: "src/lib.rs", begin: (1, 0), end: (35, 1) }), visibility: Public, docs: None, links: {}, attrs: [], deprecation: None, inner: ExternCrate { name: "easy_proc", rename: Some("self") } }`,
 right: `Item { id: Id("0:0:1568"), crate_id: 0, name: Some("easy_proc"), span: Some(Span { filename: "src/lib.rs", begin: (1, 0), end: (35, 1) }), visibility: Public, docs: Some("Helpers for making proc macro crates"), links: {}, attrs: ["#![warn(missing_docs, unused_import_braces, clippy :: pedantic,\nmissing_debug_implementations)]"], deprecation: None, inner: Module(Module { is_crate: true, items: [Id("0:0:1568"), Id("0:7"), Id("0:14"), Id("0:17"), Id("0:20"), Id("0:23:1578"), Id("0:25:1584")], is_stripped: false }) }`', src/librustdoc/json/mod.rs:243:21
stack backtrace:
   0:     0x7fd3eca101f0 - std::backtrace_rs::backtrace::libunwind::trace::h0ad3ea1f295943fa
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   1:     0x7fd3eca101f0 - std::backtrace_rs::backtrace::trace_unsynchronized::h3d735ea737b7cb6f
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fd3eca101f0 - std::sys_common::backtrace::_print_fmt::hfbffa4aad48cf418
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7fd3eca101f0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha738a84a6d451bf0
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7fd3eca6b2be - core::fmt::write::h8417ef24f00d0b21
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/core/src/fmt/mod.rs:1202:17
   5:     0x7fd3eca00f05 - std::io::Write::write_fmt::h3e7ec06f2b377bbe
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/io/mod.rs:1672:15
   6:     0x7fd3eca12eb3 - std::sys_common::backtrace::_print::h7befeffc780b8cec
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7fd3eca12eb3 - std::sys_common::backtrace::print::haf96690800a3a335
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7fd3eca12eb3 - std::panicking::default_hook::{{closure}}::h1ac2b0dba5bc8279
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/panicking.rs:295:22
   9:     0x7fd3eca12b9f - std::panicking::default_hook::h7348babc6f3f8e11
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/panicking.rs:314:9
  10:     0x7fd3ef251184 - <rustc_driver[8e6a5299f9cc0d8]::DEFAULT_HOOK::{closure#0}::{closure#0} as core[104d4c2fa3822a9e]::ops::function::FnOnce<(&core[104d4c2fa3822a9e]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  11:     0x7fd3eca136ed - std::panicking::rust_panic_with_hook::hc4945fbcea3150e8
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/panicking.rs:702:17
  12:     0x7fd3eca13547 - std::panicking::begin_panic_handler::{{closure}}::h585f395f8e9063ac
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/panicking.rs:588:13
  13:     0x7fd3eca106fc - std::sys_common::backtrace::__rust_end_short_backtrace::hf45c20ce028cb9f2
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/sys_common/backtrace.rs:138:18
  14:     0x7fd3eca13262 - rust_begin_unwind
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/panicking.rs:584:5
  15:     0x7fd3eca67dd3 - core::panicking::panic_fmt::hba397905ae8201a3
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/core/src/panicking.rs:142:14
  16:     0x7fd3eca67fbb - core::panicking::assert_failed_inner::hfc859626dcf15636
  17:     0x56287243a24b - core[104d4c2fa3822a9e]::panicking::assert_failed::<rustdoc_json_types[6fb1e2c5ce75c474]::Item, rustdoc_json_types[6fb1e2c5ce75c474]::Item>
  18:     0x5628725273dc - <rustdoc[da35cc98693c420e]::json::JsonRenderer as rustdoc[da35cc98693c420e]::formats::renderer::FormatRenderer>::item
  19:     0x56287269af6e - rustdoc[da35cc98693c420e]::formats::renderer::run_format::<rustdoc[da35cc98693c420e]::json::JsonRenderer>
  20:     0x5628723ef5d2 - rustdoc[da35cc98693c420e]::run_renderer::<rustdoc[da35cc98693c420e]::json::JsonRenderer>
  21:     0x5628726b4d68 - <rustc_session[2ec63f124a1a20e1]::session::Session>::time::<core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>, rustdoc[da35cc98693c420e]::main_options::{closure#0}::{closure#0}::{closure#1}::{closure#2}>
  22:     0x5628725e5538 - <rustc_interface[3f0e16ab3f9f028a]::passes::QueryContext>::enter::<rustdoc[da35cc98693c420e]::main_options::{closure#0}::{closure#0}::{closure#1}, core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>>
  23:     0x5628724d1999 - <rustc_interface[3f0e16ab3f9f028a]::interface::Compiler>::enter::<rustdoc[da35cc98693c420e]::main_options::{closure#0}::{closure#0}, core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>>
  24:     0x56287270ff11 - rustc_span[9601ff5af35df49b]::with_source_map::<core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>, rustc_interface[3f0e16ab3f9f028a]::interface::create_compiler_and_run<core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>, rustdoc[da35cc98693c420e]::main_options::{closure#0}>::{closure#1}>
  25:     0x56287250168c - rustc_interface[3f0e16ab3f9f028a]::interface::create_compiler_and_run::<core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>, rustdoc[da35cc98693c420e]::main_options::{closure#0}>
  26:     0x5628723f2a70 - rustdoc[da35cc98693c420e]::main_options
  27:     0x5628725e269c - <scoped_tls[a483a1011af12e7b]::ScopedKey<rustc_span[9601ff5af35df49b]::SessionGlobals>>::set::<rustdoc[da35cc98693c420e]::main_args::{closure#0}, core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>>
  28:     0x562872679470 - std[e1c98a26831e884c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[3f0e16ab3f9f028a]::util::run_in_thread_pool_with_globals<rustdoc[da35cc98693c420e]::main_args::{closure#0}, core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>>::{closure#0}, core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>>
  29:     0x5628725099d8 - <<std[e1c98a26831e884c]::thread::Builder>::spawn_unchecked_<rustc_interface[3f0e16ab3f9f028a]::util::run_in_thread_pool_with_globals<rustdoc[da35cc98693c420e]::main_args::{closure#0}, core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>>::{closure#0}, core[104d4c2fa3822a9e]::result::Result<(), rustc_errors[f2be49721dffa37f]::ErrorGuaranteed>>::{closure#1} as core[104d4c2fa3822a9e]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  30:     0x7fd3eca1d4e3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hda2f928af025a78b
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/alloc/src/boxed.rs:1935:9
  31:     0x7fd3eca1d4e3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9bd78ed494fef80b
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/alloc/src/boxed.rs:1935:9
  32:     0x7fd3eca1d4e3 - std::sys::unix::thread::Thread::new::thread_start::h1972473febc5ebc9
                               at /rustc/75b7e52e92c3b00fc891b47f5b2efdff0a2be55a/library/std/src/sys/unix/thread.rs:108:17
  33:     0x7fd3ec766e2d - start_thread
                               at /usr/src/debug/glibc-2.35-15.fc36.x86_64/nptl/pthread_create.c:442:8
  34:     0x7fd3ec7ec1b0 - __clone3
                               at /usr/src/debug/glibc-2.35-15.fc36.x86_64/misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
  35:                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 1.65.0-nightly (75b7e52e9 2022-08-13) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -Z unstable-options

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

query stack during panic:
end of query stack
error: could not document `easy_proc`

Caused by:
  process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name easy_proc src/lib.rs -o /tmp/easy_proc-0.2.0/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat -Z unstable-options --output-format json -C metadata=7a660b5c1b5e3fb9 -L dependency=/tmp/easy_proc-0.2.0/target/debug/deps --extern easy_proc_common=/tmp/easy_proc-0.2.0/target/debug/deps/libeasy_proc_common-b09d45d815963389.rmeta --extern easy_proc_derive=/tmp/easy_proc-0.2.0/target/debug/deps/libeasy_proc_derive-ca70e8f1123288ee.so --extern proc_macro_error=/tmp/easy_proc-0.2.0/target/debug/deps/libproc_macro_error-bdde941bd22e6c24.rmeta --extern proc_macro2=/tmp/easy_proc-0.2.0/target/debug/deps/libproc_macro2-826d9fe5d75d7d62.rmeta --extern quote=/tmp/easy_proc-0.2.0/target/debug/deps/libquote-facff5a4f99a0f13.rmeta --extern syn=/tmp/easy_proc-0.2.0/target/debug/deps/libsyn-e7f5ff5262e5bd46.rmeta --crate-version 0.2.0` (exit status: 101)

@rustbot labels +A-rustdoc-json +T-rustdoc +I-ICE +requires-nightly +E-needs-mcve

[aDotInTheVoid]

MCVE:

pub extern crate self as easy_proc;

@rustbot modify labels: -E-needs-mcve