Bug 2323102

I'm running Fedora 41 after dnf-system-upgrade.[1] As I add and remove programs using dnf, I see a lot of noise from glibc-common.

>>> Running trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
warning: posix.fork(): .fork(), .exec(), .wait() and .redirect2null() are deprecated, use rpm.spawn() or rpm.execute() instead
warning: posix.wait(): .fork(), .exec(), .wait() and .redirect2null() are deprecated, use rpm.spawn() or rpm.execute() instead
warning: posix.exec(): .fork(), .exec(), .wait() and .redirect2null() are deprec

I think it is harmless, but it is noisy. It seems to happen during each `dnf install` and `dnf remove`.

This is new behavior for Fedora 41. F40 and earlier did not produce the warning.

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Here is a full install using Zile to demonstrate the issue.

$ sudo dnf install zile
Updating and loading repositories:
Repositories loaded.
Package                  Arch    Version                  Repository        Size
Installing:
 zile                    x86_64  2.6.2-6.fc41             fedora       367.1 KiB
Installing dependencies:
 libgee                  x86_64  0.20.6-7.fc41            fedora       936.8 KiB

Transaction Summary:
 Installing:         2 packages

Total size of inbound packages is 433 KiB. Need to download 433 KiB.
After this operation, 1 MiB extra will be used (install 1 MiB, remove 0 B).
Is this ok [y/N]: y
[1/2] zile-0:2.6.2-6.fc41.x86_64        100% | 306.3 KiB/s | 158.7 KiB |  00m01s
[2/2] libgee-0:0.20.6-7.fc41.x86_64     100% | 491.1 KiB/s | 274.5 KiB |  00m01s
--------------------------------------------------------------------------------
[2/2] Total                             100% | 552.6 KiB/s | 433.2 KiB |  00m01s
Running transaction
[1/4] Verify package files              100% | 400.0   B/s |   2.0   B |  00m00s
[2/4] Prepare transaction               100% |  25.0   B/s |   2.0   B |  00m00s
[3/4] Installing libgee-0:0.20.6-7.fc41 100% |  35.3 MiB/s | 938.9 KiB |  00m00s
[4/4] Installing zile-0:2.6.2-6.fc41.x8 100% |  40.1 MiB/s | 369.3 KiB | -00m00s
>>> Running trigger-install scriptlet: glibc-common-0:2.40-3.fc41.x86_64
warning: posix.fork(): .fork(), .exec(), .wait() and .redirect2null() are deprecated, use rpm.spawn() or rpm.execute() instead
warning: posix.wait(): .fork(), .exec(), .wait() and .redirect2null() are deprecated, use rpm.spawn() or rpm.execute() instead
warning: posix.exec(): .fork(), .exec(), .wait() and .redirect2null() are deprec
[4/4] Installing zile-0:2.6.2-6.fc41.x8 100% |   3.3 MiB/s | 369.3 KiB |  00m00s
Complete!

[1] https://docs.fedoraproject.org/en-US/quick-docs/upgrading-fedora-offline/

Reproducible: Always

Steps to Reproduce:
Install or remove a program using dnf. For example `dnf install zile`. (Zile has very few dependencies, and it is easy to remove. And removal will trigger the issue, too).
Actual Results:  
Noisy install