[Bug 2139436] Re: cargo fetch fails with "invalid version 0 on git_proxy_options" error

Richard Scott McNew 2139436 at bugs.launchpad.net
Fri Jan 30 21:29:20 UTC 2026


** Also affects: rustc-1.85 (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Also affects: rustc-1.85 (Ubuntu Jammy)
   Importance: Undecided
       Status: New

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Title:
  cargo fetch fails with "invalid version 0 on git_proxy_options" error

Status in rustc-1.85 package in Ubuntu:
  Confirmed
Status in rustc-1.85 source package in Jammy:
  New
Status in rustc-1.85 source package in Noble:
  New

Bug description:
  Hello!

  I actually tried rustc-1.85, 1.89, 1.84, 1.83, and all of them fail.
  Looks like only 1.82 version (cargo-1.82) works and < 1.82 including
  default 1.75.

  Checked both Ubuntu 22.04 and 24.04. Both are the same.

  The problem happens when git-ssh dependencies are used. Looks like
  this may be related to incompatibility of cargo and libgit versions.

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