Rollup of 7 pull requests#152421

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matthiaskrgr wants to merge 17 commits intorust-lang:mainfrom

matthiaskrgr:rollup-iLA2nqY

Commits on Feb 1, 2026

Add help message suggesting explicit reference cast for From/TryFrom
Muhtasim-Rasheed
committed

Commits on Feb 6, 2026

Modernize diagnostic for indeterminate trait object lifetime bounds
fmease
committed

Commits on Feb 7, 2026

Commits on Feb 8, 2026

Add FCW for derive helper attributes that will conflict with built-in attributes
nik-rev
committed

Commits on Feb 10, 2026