Account::try_from lifetime is not useable

[juchiast]

Since 0.29, Account::try_from signature changed from

fn try_from(info: &AccountInfo<'a>) -> Result<Account<'a, T>> {

to

fn try_from(info: &'a AccountInfo<'a>) -> Result<Account<'a, T>> {

If I have an owned AccountInfo<'a> variable, I cannot borrow it again with lifetime 'a because the current scope is always smaller, for example:

fn foo<'a>(info: AccountInfo<'a>) {
    Account::try_from(&info); // not possible because reference cannot live as long as 'a
}

[juchiast]

My use-case will be resolved with #3342

Generally, this is still an issue because it is very hard to create a &'a AccountInfo<'a>. AccountInfo<'a> invariant and cannot be cast to a shorter lifetime AccountInfo<'b>.

[acheroncrypto]

If I have an owned AccountInfo<'a> variable, I cannot borrow it again with lifetime 'a because the current scope is always smaller, for example:

fn foo<'a>(info: AccountInfo<'a>) {
    Account::try_from(&info); // not possible because reference cannot live as long as 'a
}

Yeah, this should be fixed with #3340. See the "Details" section of #2770 for more information about the problem.