Why stable Rust supports fallible memory allocation for collections (```Vec```, ```VecDeque```) but not single objects (```Box```, ```Arc```)?

⚓ Rust 📅 2025-09-04 👤 surdeus 👁️ 2

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This post is auto-generated from RSS feed The Rust Programming Language Forum - Latest topics. Source: Why stable Rust supports fallible memory allocation for collections (```Vec```, ```VecDeque```) but not single objects (```Box```, ```Arc```)?

Hello everyone!

Recently, I've noticed that fallible memory allocation API is unstable for Box, Rc, Arc, but is stable for Vec, VecDeque, etc. I wonder, what is the reason for such decision?

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