[Bug 2127970] Re: [Ubuntu 25.10 Questing] rust coreutils "date -r file" returns a wrong date

[Julian Andres Klode]

This is fixed upstream in 88a7fa7adfa048dabdffc99451d7aba1d9e6a9b6 and
we can pull this in at a later point in time. For the time being, we'll
focus on fixing critical issues that could introduce unsafety further
down the chain, such as the short writes in bug 2125535.

I do not anticipate there are a lot of shell "monitoring" scripts,
particularly in 25.10, as this is not an LTS release. For the upcoming
LTS release this of course is a higher priority item given more
enterprise use cases.

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Title:
  [Ubuntu 25.10 Questing] rust coreutils "date -r file" returns a wrong
  date

Status in coreutils-from package in Ubuntu:
  New
Status in rust-coreutils package in Ubuntu:
  Triaged
Status in coreutils-from source package in Questing:
  New
Status in rust-coreutils source package in Questing:
  New
Status in coreutils-from source package in Resolute:
  New
Status in rust-coreutils source package in Resolute:
  Triaged

Bug description:
  Ubuntu 25.10 Questing came with this rust coreutils "date" command
  version:

  $ date -V
  date (uutils coreutils) 0.2.2

  Problem is that the command "date -r file", that will return the last
  modification time of the given file, is returning a wrong date, in
  fact, is returning the current date:

  Example given, this file "/usr/bin/bash":
  -rwxr-xr-x 1 root root 1608840 Sep  8 15:20 /usr/bin/bash*

  The command "date -r /usr/bin/bash" correct return will be:

  Mon Sep  8 15:20:42 CEST 2025

  But instead of that rust coreutils returns the current date:

  $ /usr/bin/date -r /usr/bin/bash
  Thu Oct 16 10:18:41 CEST 2025

  The gnu coreutils works as expected and returns the last modification
  date of the given file:

  $ /usr/bin/gnudate -r /usr/bin/bash
  Mon Sep  8 15:20:42 CEST 2025

  IMHO this is a very urgent to fix bug. We've noticed it because a
  couple of our monitor scripts started to act weird triggering date
  warnings for files that were untouched.

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