"backtrace written to /tmp/darktable_bt_DUYYO3.txt" but no file found

Hi,

I’m trying to track down a crash and running darktable -d all I got this

UPDATE main.images SET write_timestamp = STRFTIME(‘%s’, ‘now’) WHERE id = ?1"
backtrace written to /tmp/darktable_bt_DUYYO3.txt
Magick: abort due to signal 11 (SIGSEGV) “Segmentation Fault”…
fish: Job 1, ‘darktable -d all’ terminated by signal SIGABRT (Abort)

but then

❯ cat /tmp/darktable_bt_DUYYO3.txt
cat: /tmp/darktable_bt_DUYYO3.txt: No such file or directory

Is it Darktable’s side not really writing or NixOS thing with /tmp ?