We need to call into the else branch below to write the correct head.

Yes, I was mixed about what was the best and conclude the least we touch things the best it is.

Here either:

• we let the head where it is, knowing that the list has been cut in two, with second part having a wrong head.
• move the head to next values potentially cutting a large part of the list.

But this means we will print out this message over and over again. (Given there is no modifcation in between)

I don't think this code should attempt to fix stuff, but ok maybe we can do it.

Then we should also maybe:

• remove entry when in storage::get decode has failing,
• set the next to None when enumeration is broken,

oh ya ok at least we can make previous being None for the next element. indeed