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runc v1.3.0 -- "Mr. President, we must not allow a mine shaft gap!"

This is the first release of the 1.3.z release branch of runc. It
contains a few minor fixes for issues found in 1.3.0-rc.2.

This is the first release of runc that will follow our new release and
support policy (see RELEASES.md for more details). This means that, as
of this release:

 * As of this release, the runc 1.2.z release branch will now only
   recieve security and "significant" bugfixes.
 * Users are encouraged to plan migrating to runc 1.3.0 as soon as
   possible.
 * Due to its particular situation, runc 1.1.z is officially no longer
   supported and will no longer receieve any updates (not even for
   critical security issues). Users are urged (in the strongest possible
   terms) to upgrade to a supported version of runc.
 * Barring any future changes to our release policy, users should expect
   a runc 1.4.0 release in late October 2025.

Fixed:

 * Removed pre-emptive "full access to cgroups" warning when calling
   runc pause or runc unpause as an unprivileged user without
   --systemd-cgroups. Now the warning is only emitted if an actual
   permission error was encountered. (#4709)
 * Several fixes to our CI, mainly related to AlmaLinux and CRIU.
   (#4670, #4728, #4736)

Changed:

 * In runc 1.2, we changed our mount behaviour to correctly handle
   clearing flags. However, the error messages we returned did not
   provide as much information to users about what clearing flags were
   conflicting with locked mount flags. We now provide more diagnostic
   information if there is an error when in the fallback path to handle
   locked mount flags. (#4734)
 * Upgrade our CI to use golangci-lint v2.0. (#4692)
 * runc version information is now filled in using //go:embed rather
   than being set through Makefile. This allows go install or other
   non-make builds to contain the correct version information. Note that
   "make EXTRA_VERSION=..." still works. (#418)
 * Remove exclude directives from our go.mod for broken cilium/ebpf
   versions. v0.17.3 resolved the issue we had, and exclude directives
   are incompatible with go install. (#4748)

Thanks to the following contributors for making this release possible:

 * Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
 * Aleksa Sarai <cyphar@cyphar.com>
 * Kir Kolyshkin <kolyshkin@gmail.com>
 * Rodrigo Campos <rodrigoca@microsoft.com>
 * lifubang <lifubang@acmcoder.com>

Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>