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regression: adding a def'n for node-id NodeId(597) and def kind AnonConst but a previous def'n exists #128901

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[INFO] [stderr] thread 'rustc' panicked at compiler/rustc_ast_lowering/src/lib.rs:503:9:
[INFO] [stderr] adding a def'n for node-id NodeId(597) and def kind AnonConst but a previous def'n exists: DefKey { parent: Some(DefIndex(57)), disambiguated_data: DisambiguatedDefPathData { data: AnonConst, disambiguator: 0 } }
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7f847c87e3a5 - std::backtrace_rs::backtrace::libunwind::trace::hec2dc58314f3b5ff
[INFO] [stderr]                                at /rustc/08328a323ecd80b443a8fcc72c6b1071f48e233f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stderr]    1:     0x7f847c87e3a5 - std::backtrace_rs::backtrace::trace_unsynchronized::h331ee0b0169d7b05
[INFO] [stderr]                                at /rustc/08328a323ecd80b443a8fcc72c6b1071f48e233f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5

duplicate of #128016

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P-criticalCritical priorityT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.regression-from-stable-to-betaPerformance or correctness regression from stable to beta.

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