[zannabianca1997]

r? jdonszelmann

Add an unstable feature gate for the Move trait to experiment with the implementation, able to be removed at any time.

This pr misses the actual injection of the Move trait in all types, so it should not have perf issues (maybe just a check against diesel to be sure).

Mirror of #165376 for the related Forget trait

Part of #161457

[rustbot]

Some changes occurred in engine.rs, potentially modifying the public API of ObligationCtxt.

cc @lcnr

Some changes occurred in compiler/rustc_attr_ir

cc @jdonszelmann, @JonathanBrouwer

[rustbot]

jdonszelmann is currently at their maximum review capacity.
They may take a while to respond.

[rustbot]

Thanks for the pull request, and welcome! The Rust Project has assigned @jdonszelmann (or someone else) to review your changes, you should hear from them (or someone else) within the next two weeks.

Please see the contribution instructions and our LLM policy for more information.

[JonathanBrouwer]

@bors try @rust-timer queue

[rust-timer]

Awaiting bors try build completion.

@rustbot label: +S-waiting-on-perf

[rust-bors]

💔 Test for 3a1a1ae failed: CI. Failed jobs:

• try - dist-aarch64-linux-quick (web logs, enhanced plaintext logs)
• try - dist-x86_64-linux-quick (web logs, enhanced plaintext logs)

[rustbot]

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

[zannabianca1997]

@rustbot ready