Rust’s Zulip is used by a number of teams, notably the compiler, language, and library teams, along with their working groups.

Zulip can be an unintuitive platform to get started with. To get started, take a look at the getting started guide. For more detail, examine the Zulip user documentation!

Where to go for help with using Zulip

If you’re testing a feature, or want to get help, the #zulip stream is the place to go. Like elsewhere, the best thing to do is to create a new topic for each question.

Getting started

It is recommended to first look at the official getting started guide. Like Rust itself, Zulip is a bit special and reading the documentation before digging can be really helpful.

You’ll definitely want to configure the streams that you’re subscribed to when getting started; the default set is quite limited, and there are many groups that exist beyond it. Subscribing to a stream is very low cost – it is similar to being “in” an IRC channel, except that logs are available for all streams, regardless of subscription status.

It’s not necessary to introduce yourself, but feel free to say hello in the #new members stream.

User groups

User groups can be pinged by anyone with the @<group> notation, same as pinging another user. Groups can be created by anyone, and anyone can join a group.

Users should feel free to join (or leave) groups on their own. Furthermore, users should feel free to create groups as needed, though it is currently expected that this is somewhat rare. You should name your group similar to how you would name a stream for the same purpose, though groups can be more fine-grained (or less). For example, @T-compiler/meeting currently does not have a dedicated stream.

Appropriate conversation

In most streams, you should try to keep conversations related to team business. The #general stream is a bit broader, but even there, discussions should be closely related to Rust (though may not relate to projects of any particular team). All channels are expected to be used for discussions related to the Rust project, though; discussions of (for example) wildlife or sightseeing are not appropriate.


These are similar to “channels” on other platforms (i.e., there should not be too many). On the other hand, you can choose which streams you subscribe to, so there can be more than channels on other platforms. Read Zulip’s documentation for more details.

Streams are appropriate for any Rust official group. For example, working groups, project groups, teams are all examples of official groups. These should ideally also be represented in the team repository.

Default streams

This section is still under debate, and it is not yet clear which direction we will go. It is non-normative, and should not be used yet for modifications to the Zulip instance.

The default set of streams is chosen to allow incoming people to be able to have at least one place to go that can then, if necessary, direct them to a more specific location.

Currently that means that every top-level group present on Zulip is by default visible. Specifically, no stream that contains a / will be enabled by default.

Currently this set is:

  • general
  • t-lang
  • t-compiler
  • t-libs
  • project-ffi-unwind
  • project-inline-asm
  • project-safe-transmute
  • rust-survey-2019
  • wg-async-foundations
  • wg-database
  • wg-formal-methods
  • wg-secure-code
  • wg-traits
  • zulip

An alternative, minimalistic, approach is to use:

  • general
  • zulip
  • announce
  • new members

as the default set, which would push people into customizing their default set when starting out.

Stream naming

A stream should be named such as #t-{team}/{group name}. For example, #t-compiler/wg-parallel-rustc. More levels of nesting are fine, e.g., a working group might want “subgroups” as well, though you may want to omit the team name in such a case – keeping the stream name short is good for usability, to avoid confusion between different streams which share the same prefix.

If no top-level team exists, or the group spans multiple teams (e.g., project-ffi-unwind), then the top level team should be omitted.

Streams should be clearly communicated as being for a specific purpose. That purpose can be broad, but it should likely include a group of some kind (even if that group is transient, e.g., people who are having trouble with the rust build system, or people working on the compiler). Furthermore, we do not currently intend for this Zulip to be a general place for community projects not affiliated with the Rust organization; if they wish to use Zulip, it is free for open source.

When a new stream is created, you should announce it in #announce. This is generally done automatically by Zulip.


A topic is attached to every message within a given stream (these are the subdivisions within streams). Topics are generally transient, and live for as long as there is active discussion on a topic. Thinking of topics like email subjects is helpful.

New conversation in a given stream should almost always start in a new topic, not a preexisting one. Unlike (for example) GitHub issues, you should not attempt to search for a past topic on the same subject. Do not spend too long on the name of the topic, either, beyond trying to make it short. Topics should generally be no longer than 20 characters (loosely two to three words), to make sure it is visible to users.

You should eagerly fork new discussion topics into fresh topics. Note that this can be done with the tail of another topic (if accidentally you diverge into another area of discussion).

To fork from an existing topic, see Zulip’s documentation here.


Zulip is a unique platform which combines synchronous and asynchronous communication in one location. You should not generally expect that your messages will receive a response quickly, and unlike (for example) Discord, there is likely not much reason to “re-ping” on a particular issue every few hours as your message is unlikely to vanish into history, being isolated to a specific topic.


Our Zulip supports a lot of helpful linkifiers, and we’re generally happy to add more on request. See the documentation for the format. Propose one in #zulip!

Generally, github-org/repo#123 works for linking to an issue or PR; the below list gives a few more “special cased” repositories.

Don’t forget that standard Markdown syntax for links also works.

We support linking to issues on repositories inside the rust-lang GitHub organisation without requiring the rust-lang/ prefix. For example:

  • rust-lang/rfcs with RFC#3434 or rfc#3434
  • rust-lang/async-book with async-book#2334
  • rust-lang/cargo with cargo#2334

rust-lang/rust issues can linked without needing any prefix:

  • rust-lang/rust with #4545 or rust#4545

We currently support linking to commits on these repositories:

Read-only view

Our Zulip instance has the web-public streams beta feature enabled, and we use it for all public streams. Please let us or Zulip developers know if there’s any problems with this. The previous solution to the web-public view was the zulip archive, which now redirects to the web public view.