Make the `Forget` trait an implicit bound, matching current behavior of generic types by jdonszelmann · Pull Request #165542 · rust-lang/rust

jdonszelmann · 2026-11-06T09:24:56Z

r? @clarfonthey

Based on earlier work by zetanumbers in #150315

Note

I've not used an LLM for any part of this PR, or any other PR I make. This includes any related work like research.

rustbot · 2026-11-06T09:27:49Z

HIR ty lowering was modified

cc @fmease

jdonszelmann · 2026-11-06T09:28:54Z

@bors try @rust-timer queue

this might be bad for perf...

rust-timer · 2026-11-06T09:28:57Z

Awaiting bors try build completion.

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

…try> Make the `Forget` trait an implicit bound, matching current behavior of generic types

rust-log-analyzer · 2026-11-06T09:39:53Z

The job dist-aarch64-linux-quick failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
##[endgroup]
[2026-11-06T09:32:58.765Z INFO  opt_dist::timer] Section `Stage 1 (Rustc + rustdoc + cargo + clippy PGO)` starts
[2026-11-06T09:32:58.765Z INFO  opt_dist::timer] Section `Stage 1 (Rustc + rustdoc + cargo + clippy PGO) > Build PGO instrumented rustc and LLVM` starts
[2026-11-06T09:32:58.765Z INFO  opt_dist::exec] Executing `RUST_BACKTRACE=full python3 /checkout/x.py build --target aarch64-unknown-linux-gnu --host aarch64-unknown-linux-gnu --stage 2 library/std --set rust.llvm-bitcode-linker=false --set build.extended=false --set rust.codegen-backends=['llvm'] --set rust.deny-warnings=false rustdoc cargo --set pgo.rustc.generate="/tmp/tmp-multistage/opt-artifacts/rustc-pgo" --set pgo.cargo.generate="/tmp/tmp-multistage/opt-artifacts/rustc-pgo" --set pgo.rustdoc.generate="/tmp/tmp-multistage/opt-artifacts/rustc-pgo" --set llvm.thin-lto=false --set llvm.link-shared=true [at /checkout/obj]`
##[group]Building bootstrap
    Finished `dev` profile [unoptimized] target(s) in 0.03s
##[endgroup]
[TIMING:start] compile::Assemble { target_compiler: Compiler { stage: 2, host: aarch64-unknown-linux-gnu, forced_compiler: false } }
[TIMING:start] builder::Libdir { compiler: Compiler { stage: 2, host: aarch64-unknown-linux-gnu, forced_compiler: false }, target: aarch64-unknown-linux-gnu }
---
[RUSTC-TIMING] unic_langid_macros_impl test:false 0.198
   Compiling darling_macro v0.20.11
[RUSTC-TIMING] bstr test:false 1.973
   Compiling ref-cast-impl v1.0.25
error[E0478]: lifetime bound not satisfied
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:164:19
    |
164 |     type Output = ZeroMapBorrowed<'a, K, V>;
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^
    |
note: lifetime parameter instantiated with the lifetime `'a` as defined here
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:157:13
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             ^^
    = note: but lifetime parameter must outlive the static lifetime

error[E0478]: lifetime bound not satisfied
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:260:19
    |
260 |     type Output = ZeroMap2dBorrowed<'a, K0, K1, V>;
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
note: lifetime parameter instantiated with the lifetime `'a` as defined here
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:251:13
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             ^^
    = note: but lifetime parameter must outlive the static lifetime

[RUSTC-TIMING] darling_macro test:false 0.126
   Compiling darling v0.20.11
---
[RUSTC-TIMING] ref_cast test:false 0.023
   Compiling rustc_type_ir_macros v0.0.0 (/checkout/compiler/rustc_type_ir_macros)
[RUSTC-TIMING] fluent_bundle test:false 0.369
error: lifetime may not live long enough
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:171:13
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             -- lifetime `'a` defined here
...
171 |             mem::transmute::<&Self, &Self::Output>(self)
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:176:23
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             -- lifetime `'a` defined here
...
176 |         debug_assert!(size_of::<Self::Output>() == size_of::<Self>());
    |                       ^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:187:23
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             -- lifetime `'a` defined here
...
187 |         debug_assert!(size_of::<Self::Output>() == size_of::<Self>());
    |                       ^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:197:20
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             -- lifetime `'a` defined here
...
197 |         unsafe { f(mem::transmute::<&mut Self, &mut Self::Output>(self)) }
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:267:13
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             -- lifetime `'a` defined here
...
267 |             mem::transmute::<&Self, &Self::Output>(self)
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:272:23
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             -- lifetime `'a` defined here
...
272 |         debug_assert!(size_of::<Self::Output>() == size_of::<Self>());
    |                       ^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:283:23
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             -- lifetime `'a` defined here
...
283 |         debug_assert!(size_of::<Self::Output>() == size_of::<Self>());
    |                       ^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/25cdd57fae9f0462/zerovec-0.11.7/src/yoke_impls.rs:293:20
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             -- lifetime `'a` defined here
...
293 |         unsafe { f(mem::transmute::<&mut Self, &mut Self::Output>(self)) }
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

[RUSTC-TIMING] derive_setters test:false 0.319
   Compiling derive-where v1.6.1
For more information about this error, try `rustc --explain E0478`.
[RUSTC-TIMING] zerovec test:false 0.610
---
warning: rustc_llvm@0.0.0: Inherited flag "-fembed-bitcode=all" is not supported by the currently used CC
warning: rustc_llvm@0.0.0: Inherited flag "-fembed-bitcode=all" is not supported by the currently used CC
warning: rustc_llvm@0.0.0: Inherited flag "-fembed-bitcode=all" is not supported by the currently used CC
warning: rustc_llvm@0.0.0: Inherited flag "-fembed-bitcode=all" is not supported by the currently used CC
Bootstrap failed while executing `build --target aarch64-unknown-linux-gnu --host aarch64-unknown-linux-gnu --stage 2 library/std --set rust.llvm-bitcode-linker=false --set build.extended=false --set rust.codegen-backends=['llvm'] --set rust.deny-warnings=false rustdoc cargo --set pgo.rustc.generate="/tmp/tmp-multistage/opt-artifacts/rustc-pgo" --set pgo.cargo.generate="/tmp/tmp-multistage/opt-artifacts/rustc-pgo" --set pgo.rustdoc.generate="/tmp/tmp-multistage/opt-artifacts/rustc-pgo" --set llvm.thin-lto=false --set llvm.link-shared=true`
Currently active steps:
compile::Assemble { target_compiler: Compiler { stage: 2, host: aarch64-unknown-linux-gnu, forced_compiler: false } } at src/bootstrap/src/core/build_steps/compile.rs:143
compile::Rustc { target: aarch64-unknown-linux-gnu, build_compiler: Compiler { stage: 1, host: aarch64-unknown-linux-gnu, forced_compiler: false }, crates: [] } at src/bootstrap/src/core/build_steps/compile.rs:2341
Build completed unsuccessfully in 0:06:38
[2026-11-06T09:39:37.535Z INFO  opt_dist::timer] Section `Stage 1 (Rustc + rustdoc + cargo + clippy PGO) > Build PGO instrumented rustc and LLVM` ended: FAIL (398.77s)`
---
[2026-11-06T09:39:37.536Z INFO  opt_dist::utils] Free disk space: 2.34 TiB out of total 2.54 TiB (8.18% used)
Error: Optimized build pipeline has failed

Caused by:
    Command RUST_BACKTRACE=full python3 /checkout/x.py build --target aarch64-unknown-linux-gnu --host aarch64-unknown-linux-gnu --stage 2 library/std --set rust.llvm-bitcode-linker=false --set build.extended=false --set rust.codegen-backends=['llvm'] --set rust.deny-warnings=false rustdoc cargo --set pgo.rustc.generate="/tmp/tmp-multistage/opt-artifacts/rustc-pgo" --set pgo.cargo.generate="/tmp/tmp-multistage/opt-artifacts/rustc-pgo" --set pgo.rustdoc.generate="/tmp/tmp-multistage/opt-artifacts/rustc-pgo" --set llvm.thin-lto=false --set llvm.link-shared=true [at /checkout/obj] has failed with exit code Some(1)

Stack backtrace:
   0: <anyhow::Error>::msg::<alloc::string::String>
             at /cargo/registry/25cdd57fae9f0462/anyhow-1.0.102/src/backtrace.rs:10:14
   1: <opt_dist::exec::CmdBuilder>::run
             at /rustc/6b1363f94910f47a99e3322a6e1bed090692c94b/src/tools/opt-dist/src/exec.rs:84:17
   2: <opt_dist::exec::Bootstrap>::run
             at /rustc/6b1363f94910f47a99e3322a6e1bed090692c94b/src/tools/opt-dist/src/exec.rs:296:18
   3: opt_dist::execute_pipeline::{closure#1}::{closure#0}
             at /rustc/6b1363f94910f47a99e3322a6e1bed090692c94b/src/tools/opt-dist/src/main.rs:275:25
   4: <opt_dist::timer::TimerSection>::section::<opt_dist::execute_pipeline::{closure#1}::{closure#0}, ()>
             at /rustc/6b1363f94910f47a99e3322a6e1bed090692c94b/src/tools/opt-dist/src/timer.rs:111:22
   5: opt_dist::execute_pipeline::{closure#1}
             at /rustc/6b1363f94910f47a99e3322a6e1bed090692c94b/src/tools/opt-dist/src/main.rs:249:19
   6: <opt_dist::timer::TimerSection>::section::<opt_dist::execute_pipeline::{closure#1}, (opt_dist::training::RustcPGOProfile, opt_dist::training::RustdocPGOProfile, core::option::Option<opt_dist::training::ClippyPGOProfile>, core::option::Option<opt_dist::training::CraneliftPGOProfile>)>
             at /rustc/6b1363f94910f47a99e3322a6e1bed090692c94b/src/tools/opt-dist/src/timer.rs:111:22
   7: opt_dist::execute_pipeline
             at /rustc/6b1363f94910f47a99e3322a6e1bed090692c94b/src/tools/opt-dist/src/main.rs:246:10
   8: opt_dist::main
             at /rustc/6b1363f94910f47a99e3322a6e1bed090692c94b/src/tools/opt-dist/src/main.rs:552:18
   9: <fn() -> core::result::Result<(), anyhow::Error> as core::ops::function::FnOnce<()>>::call_once
             at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
  10: std::sys::backtrace::__rust_begin_short_backtrace::<fn() -> core::result::Result<(), anyhow::Error>, core::result::Result<(), anyhow::Error>>
             at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
  11: std::rt::lang_start::<core::result::Result<(), anyhow::Error>>::{closure#0}
             at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/rt.rs:206:18
  12: <&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe as core::ops::function::FnOnce<()>>::call_once
             at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:287:21
  13: std::panicking::catch_unwind::do_call::<&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe, i32>
             at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
  14: std::panicking::catch_unwind::<i32, &dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe>
             at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
  15: std::panic::catch_unwind::<&dyn core::ops::function::Fn<(), Output = i32> + core::marker::Sync + core::panic::unwind_safe::RefUnwindSafe, i32>
             at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
  16: std::rt::lang_start_internal::{closure#0}
             at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/rt.rs:175:24
  17: std::panicking::catch_unwind::do_call::<std::rt::lang_start_internal::{closure#0}, isize>
             at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43

rust-bors · 2026-11-06T09:40:01Z

💔 Test for 6b1363f 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)

rust-log-analyzer · 2026-11-06T09:40:27Z

The job test-x86_64-gnu-gcc failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

   Compiling fluent-syntax v0.12.0
error[E0478]: lifetime bound not satisfied
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:164:19
    |
164 |     type Output = ZeroMapBorrowed<'a, K, V>;
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^
    |
note: lifetime parameter instantiated with the lifetime `'a` as defined here
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:157:13
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             ^^
    = note: but lifetime parameter must outlive the static lifetime

error[E0478]: lifetime bound not satisfied
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:260:19
    |
260 |     type Output = ZeroMap2dBorrowed<'a, K0, K1, V>;
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
note: lifetime parameter instantiated with the lifetime `'a` as defined here
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:251:13
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             ^^
    = note: but lifetime parameter must outlive the static lifetime

[RUSTC-TIMING] fluent_syntax test:false 0.410
   Compiling intl_pluralrules v7.0.2
---
   Compiling either v1.15.0
error: lifetime may not live long enough
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:171:13
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             -- lifetime `'a` defined here
...
171 |             mem::transmute::<&Self, &Self::Output>(self)
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:176:23
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             -- lifetime `'a` defined here
...
176 |         debug_assert!(size_of::<Self::Output>() == size_of::<Self>());
    |                       ^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:187:23
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             -- lifetime `'a` defined here
...
187 |         debug_assert!(size_of::<Self::Output>() == size_of::<Self>());
    |                       ^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:197:20
    |
157 | unsafe impl<'a, K, V> Yokeable<'a> for ZeroMapBorrowed<'static, K, V>
    |             -- lifetime `'a` defined here
...
197 |         unsafe { f(mem::transmute::<&mut Self, &mut Self::Output>(self)) }
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:267:13
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             -- lifetime `'a` defined here
...
267 |             mem::transmute::<&Self, &Self::Output>(self)
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:272:23
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             -- lifetime `'a` defined here
...
272 |         debug_assert!(size_of::<Self::Output>() == size_of::<Self>());
    |                       ^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:283:23
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             -- lifetime `'a` defined here
...
283 |         debug_assert!(size_of::<Self::Output>() == size_of::<Self>());
    |                       ^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: lifetime may not live long enough
   --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/zerovec-0.11.7/src/yoke_impls.rs:293:20
    |
251 | unsafe impl<'a, K0, K1, V> Yokeable<'a> for ZeroMap2dBorrowed<'static, K0, K1, V>
    |             -- lifetime `'a` defined here
...
293 |         unsafe { f(mem::transmute::<&mut Self, &mut Self::Output>(self)) }
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

For more information about this error, try `rustc --explain E0478`.
[RUSTC-TIMING] zerovec test:false 1.473
error: could not compile `zerovec` (lib) due to 10 previous errors
warning: build failed, waiting for other jobs to finish...

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For more information how to resolve CI failures of this job, visit this link.

rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Nov 6, 2026

rustbot assigned clarfonthey Nov 6, 2026

jdonszelmann added 2 commits November 6, 2026 10:25

implement forget trait as an implicit bound

c85071d

add forget tests

4da21fe

jdonszelmann force-pushed the forget-trait-implicit-bound branch from 3f07a60 to 4da21fe Compare November 6, 2026 09:26

jdonszelmann marked this pull request as ready for review November 6, 2026 09:27

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rust-bors Bot pushed a commit that referenced this pull request Nov 6, 2026

Auto merge of #165542 - jdonszelmann:forget-trait-implicit-bound, r=<…

6b1363f

…try> Make the `Forget` trait an implicit bound, matching current behavior of generic types

rust-bors Bot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Nov 6, 2026

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Make the `Forget` trait an implicit bound, matching current behavior of generic types - #165542

Make the `Forget` trait an implicit bound, matching current behavior of generic types#165542
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