[tor-bugs] #24765 [Core Tor/Tor]: What version of Rust does Tor require for 0.3.2?

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#24765: What version of Rust does Tor require for 0.3.2?
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 Reporter:  teor           |          Owner:  (none)
     Type:  task           |         Status:  new
 Priority:  Medium         |      Milestone:  Tor: 0.3.3.x-final
Component:  Core Tor/Tor   |        Version:
 Severity:  Normal         |     Resolution:
 Keywords:  tor-rust, doc  |  Actual Points:  0.1
Parent ID:                 |         Points:  0.1
 Reviewer:                 |        Sponsor:
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Comment (by isis):

 Replying to [comment:3 nickm]:
 > I am in favor of requiring the most recent rust that we can "get away
 with" requiring.

 We can probably get away with the whatever the current nightly is? and
 then cease and track it to stable when we hear of a major distro that we
 care about has a new release including it, since Rust releases are quite
 rapid (6 weeks) and distros are generally quite slow to stabilise. One
 negative implication of this is we won't be able to use any `#[feature]`s,
 ever, or we'll likely have a bad time later trying to ask Rust devs for
 our features to be stabilised super fast into whichever version we're
 using that will become stable.

 Probably we should at least change `configure.ac` to check for 1.18, given
 the `HashSet` problem that teor noted above.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24765#comment:6>
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