@jph00 reports:

I just tried it with the latest quarto, and in a directory with just a single ipynb and a minimal _quarto.yml I got this error:

```
$ RUST_BACKTRACE=full quarto render
assertion failed [block != nullptr]: BasicBlock requested for unrecognized address
(BuilderBase.h:550 block_for_offset)
thread 'main' panicked at 'failed to get deno exit code', src/main.rs:101:37
stack backtrace:
   0:        0x100d6bb24 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h85521558a183f368
   1:        0x100d82b8b - core::fmt::write::h01631fae0d2b98bc
   2:        0x100d68d78 - std::io::Write::write_fmt::h675dde99a2999169
   3:        0x100d6d0ad - std::panicking::default_hook::{{closure}}::h5e5df492d229fd65
   4:        0x100d6ce04 - std::panicking::default_hook::h18647b59f1a84ee2
   5:        0x100d6d5e8 - std::panicking::rust_panic_with_hook::hd9ead35a68ccc55e
   6:        0x100d6d523 - std::panicking::begin_panic_handler::{{closure}}::h6fca91c5e1dc2f30
   7:        0x100d6bfa7 - std::sys_common::backtrace::__rust_end_short_backtrace::h4ff3025d9a0a0490
   8:        0x100d6d1fa - _rust_begin_unwind
   9:        0x100d89843 - core::panicking::panic_fmt::h3d9f795ee387ef8d
  10:        0x100d81d7b - core::panicking::panic_display::h57aa0e5ca0e6a595
  11:        0x100d81d2c - core::panicking::panic_str::h13f91ca11a013f3e
  12:        0x100d896d9 - core::option::expect_failed::hed5528a77aee7737
  13:        0x100d47709 - quarto::main::hcf1aaa9959ffbc6d
  14:        0x100d480b6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h9f94d688d5885adb
  15:        0x100d4812c - std::rt::lang_start::{{closure}}::h58a78b66d00be7f2
  16:        0x100d6504e - std::rt::lang_start_internal::h3fd5cff071397f19
  17:        0x100d48019 - _main
```

Here's the `_quarto.yml`

```yaml
project:
  type: website

website:
  title: "testquarto"
  description: "Experimenting with quarto"
  sidebar:
    contents:
      - index.ipynb
```


jjallaire
2022-09-05T10:46:29Z
jjallaire
v1.2
closed
rust launcher: crash on retrieving exit code from deno
https://github.com/quarto-dev/quarto-cli/issues/2296