This would be a break in higher-layer crates which incorproate this
error but:
1. That's just arti-client which hides it behind the detailed errors
cargo feature
2. I'm hoping cargo-semver-checks would spot it, anyway.
The effect is that everywhere a RetryError is used, the error sources
for the contained errors will be Display'd.
In tor-hsclient we no longer need to explicitly wrap things up in
tor_error::Report.
!1410 and !1412 had a semantic conflict *in the Cargo lockfile*!
!1410 added a new indirect dependency on derive-adhoc, which is used
in pwd-grp. pwd-grp is still declaring a dependency on d-a 0.6.1.
(This ought to be updated there in due course, but isn't a bug.)
!1412 updated our direct dependency on derive-adhoc to require 0.7.x.
In fact, the breaking change 0.6.x to 0.7.x is minor and we could have
written a more relaxed dependency.But cargo's syntax for that is very
clumsy - here is an example from derive-adhoc iteself:
itertools = ">=0.10.1, <0.12"
Fix this for now in our tree with a `cargo update`, to unbreak main.
We don't use OsString now except where it appears in our public API,
or where we get it from std::env.
Moving the `use` statements into the use sites enabled me to see
that I had found all the places I wanted to change.
users is unmaintained. pwd-grp is the crate I have just written to
replace it. In this commit:
Change the cargo dependency and imports.
Replace the cacheing arrangements. users has a built-in cache;
pwd-grp doesn't. Now, instead of cashing individual lookups, we cache
the trusted user and trusted gid calculation results.
This saves on some syscalls, and is also more convenient to write.
(Mocking is still done via the dependency.)
Many systematic consequential changes of details:
* The entrypoint names to the library are different:
pwd-grp uses the names of the corresponding Unix functions.
* pwd-grp's returned structs are transparent, so we don't
call accessors for .uid(), .name(), etc.
* pwd-grp's methods are much more often fallible
(returning io::Result<Option<...>)
* We're using the non-UTF-8 pwd-grp API, which means we must
use turbofish syntax in some places.
* The mocking API is a bit different.
Add some wrapper functions for convenience.
The pwd-grp crate has a richer and more faithful, but not so
convenient, way of creating dummy user/group entries. Also the type
names are all going to change.
Doing this now reduces churn.
The actual underlying operations here *are* fallible.
The `users` crate hides those errors in several cases.
(Failures are very rare (at least unless NIS is involved), so this is
not of much practical import, but it's going to be necessary when we
use the more careful pwd-grp crate.
Gabriela Moldovan
Ian Jackson
Nick Mathewson
Ian Jackson
juga
Alexander Færøy