panicked at 'attempted to leave type `webcore::serialization::SerializedValue` uninitialized, which is invalid

[intendednull]

After updating to rustc 1.48.0 my app panics with:

panicked at 'attempted to leave type `webcore::serialization::SerializedValue` uninitialized, which is invalid

Commenting out web_logger::init() resolves the issue.