loading dictionaries causes OOM

[IlanKD]

Hi !

I just tried updating cadmus inside the app choosing the main branch.
Then I downloaded the french dictionnary without any issue. However when I hit define on a word, cadmus restarts, throwing me on the library main page.

Device : Kobo Glo Mark 4
Telemetry turned on, level DEBUG

[OGKevin]

👋🏾 can you follow the troubleshooting steps and share the logs 👀

[IlanKD]

Sure !

[IlanKD]

Here are my 4 last logs, given I restarted Cadmus a couple times maybe there's useful insight in multiple of them
cadmus-019d9112-d628-74a1-9488-b8d1703b89e3.json
cadmus-019d9113-3b98-7060-9aff-28ac32072bac.json
cadmus-019d9113-8138-72c0-ac79-9d62af23326c.json
cadmus-019d9111-b750-7751-8b89-3eca577cb770.json

[OGKevin]

These logs indeed show ungraceful shutdown 😔. Do you see an error message in info.log as well that explains it? E.g. a panic message.

The ungraceful exit seems to happen during parsing of the dictionary 🤔

[IlanKD]

yes sorry I forgot this one.
Here he is :

info.log

[OGKevin]

haha

Cadmus run started with ID: 019d9113-3b98-7060-9aff-28ac32072bac (version v0.10.0-70-gdf4d4dd)
memory allocation of 81518800 bytes failed
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
Aborted

And according to https://comparisontabl.es/kobo-e-readers/ the Glo only has 256 MB of memory. What happens is that Plato loads all dictionaries in memory and thats a bit too much. So this shall be refactored to not do that.

Ref: baskerville/plato#280