`rustup update` panic while cleaning cache

Problem

info: syncing channel updates for 'stable-x86_64-apple-darwin'
info: checking for self-updates

  stable-x86_64-apple-darwin unchanged - rustc 1.56.1 (59eed8a2a 2021-11-01)

info: cleaning up downloads & tmp directories
thread 'main' panicked at 'Unable to clean up /Users/andrewsonin/.rustup/tmp: Os { code: 1, kind: PermissionDenied, message: "Operation not permitted" }', src/utils/utils.rs:642:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Steps

1. curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
2. rustup target add x86_64-unknown-linux-musl x86_64-pc-windows-gnu
3. rustup update

Possible Solution(s)

No response

Notes

No response

Rustup version

rustup 1.24.3 (ce5817a94 2021-05-31)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.56.1 (59eed8a2a 2021-11-01)`

Installed toolchains

Default host: x86_64-apple-darwin
rustup home:  /Users/andrewsonin/.rustup

installed targets for active toolchain
--------------------------------------

x86_64-apple-darwin
x86_64-pc-windows-gnu
x86_64-unknown-linux-musl

active toolchain
----------------

stable-x86_64-apple-darwin (default)
rustc 1.56.1 (59eed8a2a 2021-11-01)

Operating system

macOS Monterey 12.0.1

Start at src/utils/utils.rs:642 and reproduce rustup update on macOS with the listed targets and rustup version. Investigate the cleanup failure under /Users/andrewsonin/.rustup/tmp; done means the update completes without panicking when cleanup returns PermissionDenied.