matrix-org / matrix-org/matrix-rust-sdk
deserialization failed: invalid type: null, expected struct RoomSummary
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Description
`Client::sync` fails with:
> Error: deserialization failed: invalid type: null, expected struct RoomSummary at line 1 column 1308
```
Stack backtrace:
0: anyhow::error:: for anyhow::Error>::from
1: myapp::main::{{closure}}.17214
2: myapp::main
3: std::sys::backtrace::__rust_begin_short_backtrace
4: main
5: __libc_start_call_main
6: __libc_start_main_alias_2
7: _start
```
[Cargo.lock](https://github.com/user-attachments/files/19238240/Cargo.lock.txt)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the Client::sync entry point and the RoomSummary deserialization path, then reproduce the reported null-type failure using the issue details and attached Cargo.lock. Trace the response field at the reported location; done means Client::sync handles the observed response without this deserialization error and includes a regression check.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- api
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100