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From: Santiago Vila &lt;sanvila@debian.org&gt;
To: Debian BTS &lt;submit@bugs.debian.org&gt;
Subject: rust-gio: FTBFS: error[E0425]: cannot find type
 `GDBusActionGroupClass` in crate `ffi`
X-Debbugs-Cc: sanvila@debian.org
Message-Id: &lt;E1x0LeM-005IeX-1R@paradis.debian.org&gt;
Date: Sat, 29 Aug 2026 16:11:22 +0000
Delivered-To: submit@bugs.debian.org

Package: src:rust-gio
Version: 0.22.8-1
Severity: serious
Tags: ftbfs forky sid

Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202608/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:rust-gio, so that this is still
visible in the BTS web page for this package.

Thanks.

--------------------------------------------------------------------------------
[...]
   Compiling glib v0.22.8
     Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=glib CAR [too-long-redacted] stry=/usr/share/cargo/registry`
   Compiling futures-io v0.3.33
     Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=futures_io CARGO_MANIFEST_DIR=/&lt;&lt;PKGBUILDDIR&gt;&gt;/debian/cargo_registry/futures-io-0.3.33 CARGO_MANIFEST_PATH=/&lt;&lt;PKGBUILDDIR&gt;&gt;/debian/cargo_registry/futures-io-0.3.33/Cargo.toml CARGO_PKG_AUTHORS='' CARGO_PKG_DESCRIPTION='The `AsyncRead`, `AsyncWrite`, `AsyncSeek`, and `AsyncBufRead` traits for the futures-rs library.
' CARGO_PKG_HOMEPAGE='https://rust-lang.github.io/futures-rs [too-long-redacted] stry=/usr/share/cargo/registry`
   Compiling gio v0.22.8 (/&lt;&lt;PKGBUILDDIR&gt;&gt;)
     Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=gio CARG [too-long-redacted] stry=/usr/share/cargo/registry`
error[E0425]: cannot find type `GDBusActionGroupClass` in crate `ffi`
    --&gt; src/auto/dbus_action_group.rs:10:67
     |
  10 |     pub struct DBusActionGroup(Object&lt;ffi::GDBusActionGroup, ffi::GDBusActionGroupClass&gt;) @implements ActionGroup, RemoteActionGroup;
     |                                                                   ^^^^^^^^^^^^^^^^^^^^^
     |
    ::: /usr/share/cargo/registry/gio-sys-0.22.8/src/lib.rs:7306:1
     |
7306 | pub struct GDBusActionGroup {
     | --------------------------- similarly named struct `GDBusActionGroup` defined here
     |
help: a struct with a similar name exists
     |
  10 -     pub struct DBusActionGroup(Object&lt;ffi::GDBusActionGroup, ffi::GDBusActionGroupClass&gt;) @implements ActionGroup, RemoteActionGroup;
  10 +     pub struct DBusActionGroup(Object&lt;ffi::GDBusActionGroup, ffi::GDBusActionGroup&gt;) @implements ActionGroup, RemoteActionGroup;
     |

warning: unexpected `cfg` condition value: `v2_90`
  --&gt; src/auto/unix_fd_list.rs:36:11
   |
36 |     #[cfg(feature = &quot;v2_90&quot;)]
   |           ^^^^^^^^^^-------
   |                     |
   |                     help: there is a expected value with a similar name: `&quot;v2_80&quot;`
   |
   = note: expected values for `feature` are: `v2_58`, `v2_60`, `v2_62`, `v2_64`, `v2_66`, `v2_68`, `v2_70`, `v2_72`, `v2_74`, `v2_76`, `v2_78`, `v2_80`, `v2_82`, `v2_84`, `v2_86`, and `v2_88`
   = help: consider adding `v2_90` as a feature in `Cargo.toml`
   = note: see &lt;https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html&gt; for more information about checking conditional configuration
   = note: `#[warn(unexpected_cfgs)]` on by default

warning: unexpected `cfg` condition value: `v2_90`
  --&gt; src/auto/unix_fd_list.rs:53:11
   |
53 |     #[cfg(feature = &quot;v2_90&quot;)]
   |           ^^^^^^^^^^-------
   |                     |
   |                     help: there is a expected value with a similar name: `&quot;v2_80&quot;`
   |
   = note: expected values for `feature` are: `v2_58`, `v2_60`, `v2_62`, `v2_64`, `v2_66`, `v2_68`, `v2_70`, `v2_72`, `v2_74`, `v2_76`, `v2_78`, `v2_80`, `v2_82`, `v2_84`, `v2_86`, and `v2_88`
   = help: consider adding `v2_90` as a feature in `Cargo.toml`
   = note: see &lt;https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html&gt; for more information about checking conditional configuration

warning: unexpected `cfg` condition value: `v2_90`
  --&gt; src/auto/unix_fd_list.rs:62:11
   |
62 |     #[cfg(feature = &quot;v2_90&quot;)]
   |           ^^^^^^^^^^-------
   |                     |
   |                     help: there is a expected value with a similar name: `&quot;v2_80&quot;`
   |
   = note: expected values for `feature` are: `v2_58`, `v2_60`, `v2_62`, `v2_64`, `v2_66`, `v2_68`, `v2_70`, `v2_72`, `v2_74`, `v2_76`, `v2_78`, `v2_80`, `v2_82`, `v2_84`, `v2_86`, and `v2_88`
   = help: consider adding `v2_90` as a feature in `Cargo.toml`
   = note: see &lt;https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html&gt; for more information about checking conditional configuration

For more information about this error, try `rustc --explain E0425`.
warning: `gio` (lib) generated 3 warnings
error: could not compile `gio` (lib) due to 1 previous error; 3 warnings emitted

Caused by:
  process didn't exit successfully: `CARGO=/usr/bin/cargo CA [too-long-redacted] argo/registry` (exit status: 1)
dh_auto_test: error: /usr/share/cargo/bin/cargo build returned exit code 101
make: *** [debian/rules:6: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
--------------------------------------------------------------------------------
]