nightly rustdoc reaches recursion limit while beta works fine #79506
Description
For the fixed crate (which uses typenum),
cargo +nightly doc --no-deps
fails with error[E0275]: overflow evaluating the requirement.
Stable and beta work. Building with cargo +nightly build also works.
I also tried the suggestion help: consider adding a `#![recursion_limit="256"]` attribute to your crate (`fixed`). But it did not help, and if I keep on increasing the limit, finally I get (signal: 6, SIGABRT: process abort signal).
Meta
rustc +nightly --version --verbose:
rustc 1.50.0-nightly (6a889570e 2020-11-27)
binary: rustc
commit-hash: 6a889570e46c03d7b156ec08f3f4cb4d145924a3
commit-date: 2020-11-27
host: x86_64-unknown-linux-gnu
release: 1.50.0-nightly
