"index out of bounds: the len is 1 buit the index is 2" when compiling time on docs.rs

[V0ldek]

Description

It's hard for me to provide a MRE, since I can't reproduce the error locally or on GitHub pipelines.

The compilation of docs of my crate fails on docs.rs with an internal compiler error when compiling the time crate (v0.3.9).

I've created an issue at docs.rs repo and asked for a rebuild, but it failed with the same error.

My docs pipeline succeeds on newest nightly, it also works when I run docs locally on Ubuntu 22 (x86_64-unknown-linux-gnu).

Error output

See the two builds on docs.rs: https://docs.rs/crate/rsonpath/0.1.0/builds/593904, https://docs.rs/crate/rsonpath/0.1.0/builds/593800

Backtrace

[INFO] [stderr] thread 'rustc' panicked at 'index out of bounds: the len is 1 but the index is 2', compiler/rustc_builtin_macros/src/format.rs:1001:28
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7fa546788950 - std::backtrace_rs::backtrace::libunwind::trace::heeafe1f1ea6b4c2f
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    1:     0x7fa546788950 - std::backtrace_rs::backtrace::trace_unsynchronized::hf08684e78cd6c167
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x7fa546788950 - std::sys_common::backtrace::_print_fmt::had9e99c2c8763a1e
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]    3:     0x7fa546788950 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1b4c432d2a1e6303
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]    4:     0x7fa5467e1f2c - core::fmt::write::h87085de871a99231
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/core/src/fmt/mod.rs:1198:17
[INFO] [stderr]    5:     0x7fa54677a015 - std::io::Write::write_fmt::h7635d2f423aa55dc
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/io/mod.rs:1672:15
[INFO] [stderr]    6:     0x7fa54678b5e1 - std::sys_common::backtrace::_print::hc003bc1c22b7967b
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]    7:     0x7fa54678b5e1 - std::sys_common::backtrace::print::h1baa1ab7758e52b0
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]    8:     0x7fa54678b5e1 - std::panicking::default_hook::{{closure}}::he2f5e84c6ab77817
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:295:22
[INFO] [stderr]    9:     0x7fa54678b2b3 - std::panicking::default_hook::h3f96069db270c68f
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:314:9
[INFO] [stderr]   10:     0x7fa546fb2de4 - rustc_driver[1ce26eb46f30f4d]::DEFAULT_HOOK::{closure#0}::{closure#0}
[INFO] [stderr]   11:     0x7fa54678bdb6 - std::panicking::rust_panic_with_hook::hed0c1597bbc695a6
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:702:17
[INFO] [stderr]   12:     0x7fa54678bc07 - std::panicking::begin_panic_handler::{{closure}}::h0fc9e6b3154da131
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:588:13
[INFO] [stderr]   13:     0x7fa546788e34 - std::sys_common::backtrace::__rust_end_short_backtrace::hb9c2240a67931ff9
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]   14:     0x7fa54678b932 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/panicking.rs:584:5
[INFO] [stderr]   15:     0x7fa54674fc33 - core::panicking::panic_fmt::h6bda1b0556b509cd
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/core/src/panicking.rs:142:14
[INFO] [stderr]   16:     0x7fa54674fb72 - core::panicking::panic_bounds_check::hf8fc252dfbb36006
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/core/src/panicking.rs:84:5
[INFO] [stderr]   17:     0x7fa5493ed643 - rustc_builtin_macros[6a564b3b10d3c327]::format::expand_preparsed_format_args
[INFO] [stderr]   18:     0x7fa5493e6dac - rustc_builtin_macros[6a564b3b10d3c327]::format::expand_format_args_impl
[INFO] [stderr]   19:     0x7fa548d25bed - <rustc_expand[ec7f7165620ca96d]::expand::MacroExpander>::fully_expand_fragment
[INFO] [stderr]   20:     0x7fa54989a94b - <rustc_expand[ec7f7165620ca96d]::expand::MacroExpander>::expand_crate
[INFO] [stderr]   21:     0x7fa5491bfaa2 - <rustc_session[4ac326324d613686]::session::Session>::time::<core[32c218dbf3427c26]::result::Result<rustc_ast[f9ddef6e3c579104]::ast::Crate, rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_interface[694c7ab70a1d38bc]::passes::configure_and_expand::{closure#1}>
[INFO] [stderr]   22:     0x7fa5491a9832 - rustc_interface[694c7ab70a1d38bc]::passes::configure_and_expand
[INFO] [stderr]   23:     0x7fa5491b62c1 - <rustc_interface[694c7ab70a1d38bc]::queries::Queries>::expansion
[INFO] [stderr]   24:     0x7fa549174fcc - <rustc_interface[694c7ab70a1d38bc]::interface::Compiler>::enter::<rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}::{closure#2}, core[32c218dbf3427c26]::result::Result<core[32c218dbf3427c26]::option::Option<rustc_interface[694c7ab70a1d38bc]::queries::Linker>, rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>
[INFO] [stderr]   25:     0x7fa5491711ff - rustc_span[717885ec7c6cd182]::with_source_map::<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_interface[694c7ab70a1d38bc]::interface::create_compiler_and_run<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>::{closure#1}>
[INFO] [stderr]   26:     0x7fa54918d4b0 - rustc_interface[694c7ab70a1d38bc]::interface::create_compiler_and_run::<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>
[INFO] [stderr]   27:     0x7fa5491a15b2 - <scoped_tls[f235d80db834c386]::ScopedKey<rustc_span[717885ec7c6cd182]::SessionGlobals>>::set::<rustc_interface[694c7ab70a1d38bc]::interface::run_compiler<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>
[INFO] [stderr]   28:     0x7fa54917378f - std[167b23ae759531ff]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[694c7ab70a1d38bc]::util::run_in_thread_pool_with_globals<rustc_interface[694c7ab70a1d38bc]::interface::run_compiler<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>
[INFO] [stderr]   29:     0x7fa54918d909 - <<std[167b23ae759531ff]::thread::Builder>::spawn_unchecked_<rustc_interface[694c7ab70a1d38bc]::util::run_in_thread_pool_with_globals<rustc_interface[694c7ab70a1d38bc]::interface::run_compiler<core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>, rustc_driver[1ce26eb46f30f4d]::run_compiler::{closure#1}>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>::{closure#0}, core[32c218dbf3427c26]::result::Result<(), rustc_errors[3b3e5bcd1e9c2834]::ErrorGuaranteed>>::{closure#1} as core[32c218dbf3427c26]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   30:     0x7fa546795803 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h86b1834fb0da834b
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/alloc/src/boxed.rs:1934:9
[INFO] [stderr]   31:     0x7fa546795803 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h124d05192aaf60e0
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/alloc/src/boxed.rs:1934:9
[INFO] [stderr]   32:     0x7fa546795803 - std::sys::unix::thread::Thread::new::thread_start::h01e8d05fb6e030ea
[INFO] [stderr]                                at /rustc/c2f428d2f3340a0e7d995f4726223db91b93704c/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stderr]   33:     0x7fa546693609 - start_thread
[INFO] [stderr]   34:     0x7fa5465b6133 - clone
[INFO] [stderr]   35:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] error: internal compiler error: unexpected panic
[INFO] [stderr] 
[INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug.
[INFO] [stderr] 
[INFO] [stderr] 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
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.64.0-nightly (c2f428d2f 2022-07-14) running on x86_64-unknown-linux-gnu
[INFO] [stderr] 
[INFO] [stderr] note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2
[INFO] [stderr] 
[INFO] [stderr] note: some of the compiler flags provided by cargo are hidden
[INFO] [stderr] 
[INFO] [stderr] query stack during panic:
[INFO] [stderr] end of query stack
[INFO] [stderr] error: could not compile `time`

[jyn514]

You have --cfg docsrs set in docs.rs, try setting that locally.

[compiler-errors]

This is a dupe of #99261