Crash when using accented letter in some situations

[tintou]

Bug Report

Environment

Zola version: current trunk

Expected Behavior

My website should be able to build correctly.

Current Behavior

thread '<unnamed>' panicked at /home/tintou/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tera-1.20.0/src/context.rs:281:46:
byte index 14 is not a char boundary; it is inside 'é' (bytes 13..15) of `"La communauté"`
stack backtrace:
   0:     0x57e06a04c415 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h1b9dad2a88e955ff
   1:     0x57e06a07a41b - core::fmt::write::h4b5a1270214bc4a7
   2:     0x57e06a0484af - std::io::Write::write_fmt::hd04af345a50c312d
   3:     0x57e06a04d791 - std::panicking::default_hook::{{closure}}::h96ab15e9936be7ed
   4:     0x57e06a04d46c - std::panicking::default_hook::h3cacb9c27561ad33
   5:     0x57e06a04ddf1 - std::panicking::rust_panic_with_hook::hfe205f6954b2c97b
   6:     0x57e06a04dc57 - std::panicking::begin_panic_handler::{{closure}}::h6cb44b3a50f28c44
   7:     0x57e06a04c8d9 - std::sys::backtrace::__rust_end_short_backtrace::hf1c1f2a92799bb0e
   8:     0x57e06a04d8e4 - rust_begin_unwind
   9:     0x57e067522e53 - core::panicking::panic_fmt::h3d8fc78294164da7
  10:     0x57e06a07e17a - core::str::slice_error_fail_rt::h23607b8a3a6c2267
  11:     0x57e06752369a - core::str::slice_error_fail::h402ef64b20c243ef
  12:     0x57e069c73476 - core::str::traits::<impl core::slice::index::SliceIndex<str> for core::ops::range::Range<usize>>::index::hb5c6fc43ed5a49d2
  13:     0x57e069c67713 - core::str::traits::<impl core::ops::index::Index<I> for str>::index::hde5377738613c154
  14:     0x57e067f41f53 - <tera::context::PointerMachina as core::iter::traits::iterator::Iterator>::next::h64cbfa4e88a6f44d
  15:     0x57e067f2122c - core::iter::traits::iterator::Iterator::try_fold::hcb9addf8741b3869
  16:     0x57e067f648ce - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::try_fold::h9e04fa9338f5fa31
  17:     0x57e067f4261b - tera::context::dotted_pointer::h0134580b47083866
  18:     0x57e067fa5c5b - tera::renderer::stack_frame::value_by_pointer::h24bee14788971460
  19:     0x57e067fa6377 - tera::renderer::stack_frame::StackFrame::find_value_in_frame::{{closure}}::hb2d2058d1ea0ff60
  20:     0x57e067f22874 - core::option::Option<T>::map::ha8b1aa46ff4f1b40
  21:     0x57e067fa6262 - tera::renderer::stack_frame::StackFrame::find_value_in_frame::h55c3d14af194c9fc
  22:     0x57e067fa60b6 - tera::renderer::stack_frame::StackFrame::find_value::hf12365d7db89a9c4
  23:     0x57e067f44b0b - tera::renderer::call_stack::CallStack::lookup::h8b22efc0394d55f4
  24:     0x57e067ed4b3f - tera::renderer::processor::process_path::ha5c675d0603c7b21
  25:     0x57e067ee2bff - tera::renderer::processor::Processor::lookup_ident::he50438bad9f65975
  26:     0x57e067ed8d36 - tera::renderer::processor::Processor::eval_expression::h628ce8da364ebc9d
  27:     0x57e067edb0f8 - tera::renderer::processor::Processor::safe_eval_expression::h2f54507c92725ff8
  28:     0x57e067edb155 - tera::renderer::processor::Processor::eval_set::h3bf5b5e958a69017
  29:     0x57e067ee47d7 - tera::renderer::processor::Processor::render_node::h56e20e26a7eb2165
  30:     0x57e067ed5129 - tera::renderer::processor::Processor::render_body::h1518a1eaf66a065a
  31:     0x57e067edc6ee - tera::renderer::processor::Processor::eval_macro_call::h48c876224bf67b49
  32:     0x57e067edb0ba - tera::renderer::processor::Processor::eval_expression::{{closure}}::h3ec9db0da718d1ff
  33:     0x57e067efa70d - tera::utils::render_to_string::h8f18efd65cdbf84c
  34:     0x57e067ed8e75 - tera::renderer::processor::Processor::eval_expression::h628ce8da364ebc9d
  35:     0x57e067ee307d - tera::renderer::processor::Processor::render_node::h3c97cd70bd0d315e
  36:     0x57e067ed5249 - tera::renderer::processor::Processor::render_body::hb91b0faddb39d162
  37:     0x57e067ed79c3 - tera::renderer::processor::Processor::render_if_node::hd378379ec4305985
  38:     0x57e067ee33eb - tera::renderer::processor::Processor::render_node::h3c97cd70bd0d315e
  39:     0x57e067ed5249 - tera::renderer::processor::Processor::render_body::hb91b0faddb39d162
  40:     0x57e067ed60de - tera::renderer::processor::Processor::render_for_loop::h9353b98d1af6b43c
  41:     0x57e067ee3389 - tera::renderer::processor::Processor::render_node::h3c97cd70bd0d315e
  42:     0x57e067ed5249 - tera::renderer::processor::Processor::render_body::hb91b0faddb39d162
  43:     0x57e067ee3b83 - tera::renderer::processor::Processor::render_node::h3c97cd70bd0d315e
  44:     0x57e067ed5249 - tera::renderer::processor::Processor::render_body::hb91b0faddb39d162
  45:     0x57e067ed7a46 - tera::renderer::processor::Processor::render_if_node::hd378379ec4305985
  46:     0x57e067ee33eb - tera::renderer::processor::Processor::render_node::h3c97cd70bd0d315e
  47:     0x57e067ed5249 - tera::renderer::processor::Processor::render_body::hb91b0faddb39d162
  48:     0x57e067ed80d2 - tera::renderer::processor::Processor::render_block::hcb532c238d7e15b0
  49:     0x57e067ed8176 - tera::renderer::processor::Processor::render_block::hcb532c238d7e15b0
  50:     0x57e067ee332b - tera::renderer::processor::Processor::render_node::h3c97cd70bd0d315e
  51:     0x57e067ee6607 - tera::renderer::processor::Processor::render::hab3fb25af5e98015
  52:     0x57e067ec2198 - tera::renderer::Renderer::render_to::hc85ff2d5f725bb54
  53:     0x57e067ec1fb9 - tera::renderer::Renderer::render::h7aa87850cbd927dd
  54:     0x57e067f5b917 - tera::tera::Tera::render::hb28960e253424b6a
  55:     0x57e067c78422 - utils::templates::render_template::hc5fdfdfed330f5ca
  56:     0x57e0679ce63a - content::section::Section::render_html::h3dd61d3daef05b95
  57:     0x57e0677006d6 - site::Site::render_section::h158b27cbca4640af
  58:     0x57e06771b8bd - site::Site::render_sections::{{closure}}::hd2005b1e19df6d75
  59:     0x57e0677172c0 - core::ops::function::impls::<impl core::ops::function::FnMut<A> for &F>::call_mut::hc252d8b8d1b4f39b
  60:     0x57e06773bfab - core::iter::adapters::map::map_try_fold::{{closure}}::h9f622698b5f65045
  61:     0x57e06775f1d8 - core::iter::traits::iterator::Iterator::try_fold::h04e0ac2f4ed2c3cf
  62:     0x57e06773b1f5 - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::try_fold::h7bf5403c57b403d8
  63:     0x57e06773aff2 - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::try_fold::h148d399307033fe4
  64:     0x57e067764bb5 - <core::iter::adapters::take_while::TakeWhile<I,P> as core::iter::traits::iterator::Iterator>::try_fold::h1a6e4095ef003f30
  65:     0x57e067764a71 - <core::iter::adapters::take_while::TakeWhile<I,P> as core::iter::traits::iterator::Iterator>::fold::h83c1db8c1da342b2
  66:     0x57e06773ab51 - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::fold::hc937f4c4dd1b9460
  67:     0x57e06773bc67 - core::iter::traits::iterator::Iterator::for_each::haa152f086954e723
  68:     0x57e06779fe1d - <rayon::iter::noop::NoopConsumer as rayon::iter::plumbing::Folder<T>>::consume_iter::hf20533a39f66bea0
  69:     0x57e06775e823 - <rayon::iter::while_some::WhileSomeFolder<C> as rayon::iter::plumbing::Folder<core::option::Option<T>>>::consume_iter::h75e07f997179f1aa
  70:     0x57e067704bda - <rayon::iter::map::MapFolder<C,F> as rayon::iter::plumbing::Folder<T>>::consume_iter::h5863ea0c8bb367e4
  71:     0x57e067705183 - <rayon::iter::map::MapFolder<C,F> as rayon::iter::plumbing::Folder<T>>::consume_iter::h85787e6a9afd22a9
  72:     0x57e06775f771 - rayon::iter::plumbing::Producer::fold_with::h3ef63c689e82a306
  73:     0x57e067799f8a - rayon::iter::plumbing::bridge_producer_consumer::helper::h3a5134e546bbaa1d
  74:     0x57e06779d6d1 - rayon::iter::plumbing::bridge_producer_consumer::helper::{{closure}}::h57155ad999487dda
  75:     0x57e067770809 - rayon_core::join::join_context::call_a::{{closure}}::hcf307ebd7f233e79
  76:     0x57e0677a6081 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8138832e3a387350
  77:     0x57e0677a3fe1 - std::panicking::try::do_call::h7de66be01cb91584
  78:     0x57e0677a378b - __rust_try
  79:     0x57e0677a2555 - std::panic::catch_unwind::h82a9f85aef065758
  80:     0x57e06779f5e2 - rayon_core::unwind::halt_unwinding::h84088e0c92de96b6
  81:     0x57e06776b01b - rayon_core::join::join_context::{{closure}}::h1ad5d2ee5243daac
  82:     0x57e0677853c1 - rayon_core::registry::in_worker::h3a359f5bdd4f1d9a
  83:     0x57e06776a04e - rayon_core::join::join_context::h6ed775cb2986c4dd
  84:     0x57e06779a217 - rayon::iter::plumbing::bridge_producer_consumer::helper::h3a5134e546bbaa1d
  85:     0x57e06779d6d1 - rayon::iter::plumbing::bridge_producer_consumer::helper::{{closure}}::h57155ad999487dda
  86:     0x57e067770809 - rayon_core::join::join_context::call_a::{{closure}}::hcf307ebd7f233e79
  87:     0x57e0677a6081 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8138832e3a387350
  88:     0x57e0677a3fe1 - std::panicking::try::do_call::h7de66be01cb91584
  89:     0x57e0677a378b - __rust_try
  90:     0x57e0677a2555 - std::panic::catch_unwind::h82a9f85aef065758
  91:     0x57e06779f5e2 - rayon_core::unwind::halt_unwinding::h84088e0c92de96b6
  92:     0x57e06776b01b - rayon_core::join::join_context::{{closure}}::h1ad5d2ee5243daac
  93:     0x57e06777e5c3 - rayon_core::registry::Registry::in_worker_cold::{{closure}}::{{closure}}::h4a927347f21e8ed4
  94:     0x57e06778cbf2 - rayon_core::job::JobResult<T>::call::{{closure}}::hf9b840cde216299b
  95:     0x57e0677a6264 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::haf0ab4567d926409
  96:     0x57e0677a447d - std::panicking::try::do_call::hcf65a0085d2c7134
  97:     0x57e0677a378b - __rust_try
  98:     0x57e0677a28fb - std::panic::catch_unwind::ha29e9678be9d4568
  99:     0x57e06779f2b6 - rayon_core::unwind::halt_unwinding::h49d7be073402a69c
 100:     0x57e06778b74a - rayon_core::job::JobResult<T>::call::h97ab397ca9f3af12
 101:     0x57e0677944c6 - <rayon_core::job::StackJob<L,F,R> as rayon_core::job::Job>::execute::h6311a71c9cfd2e94
 102:     0x57e0697292ee - rayon_core::job::JobRef::execute::h68525ceece69c2a6
 103:     0x57e06972fd63 - rayon_core::registry::WorkerThread::execute::h7a9abaede8469583
 104:     0x57e06972fb02 - rayon_core::registry::WorkerThread::wait_until_cold::h6faa5c7e2f3f29a5
 105:     0x57e06972f89a - rayon_core::registry::WorkerThread::wait_until::h72261a75dd8a6f56
 106:     0x57e06972fc47 - rayon_core::registry::WorkerThread::wait_until_out_of_work::h49e822bca404f9a8
 107:     0x57e0697300d7 - rayon_core::registry::main_loop::hd9b243d7815d8635
 108:     0x57e06972cf06 - rayon_core::registry::ThreadBuilder::run::h2dc2bc6d75ee611b
 109:     0x57e06972d36d - <rayon_core::registry::DefaultSpawn as rayon_core::registry::ThreadSpawn>::spawn::{{closure}}::h7c4522f9578df136
 110:     0x57e06973f256 - std::sys::backtrace::__rust_begin_short_backtrace::hde181be98506de08
 111:     0x57e06973ce4d - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h26edd3637fa68e4b
 112:     0x57e069732bd1 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::haf8d3c349d19c5f9
 113:     0x57e06973f59d - std::panicking::try::do_call::h91146cfab1a69bfc
 114:     0x57e06973ec3b - __rust_try
 115:     0x57e06973cb5a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha65658fff33560ba
 116:     0x57e06972b327 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h534902b53a0f7547
 117:     0x57e06a05430b - std::sys::pal::unix::thread::Thread::new::thread_start::ha8af9c992ef0b208
 118:     0x7db93269ca94 - start_thread
                               at ./nptl/pthread_create.c:447:8
 119:     0x7db932729c3c - __GI___clone3
                               at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
 120:                0x0 - <unknown>

Step to reproduce

• I'm using a new website with the Duckquill theme.
• Create a simple /content/communaute/_index.md
• Add to the config.toml:

[extra.nav]
show_feed = true
links = [
 	{ url = "@/communaute/_index.md", name = "La communauté" },
]

Try to build the website and get the error above