Wasm-opt endless loop

[freopen]

🐛 Bug description

wasm-pack stuck running wasm-opt for the same file over and over:

[INFO  wasm_pack::command::build] executing wasm-opt with ["-O"]
[INFO]: found wasm-opt at "/nix/store/bpbyjl98gyjlbkxskrz9l4r6ykill285-binaryen-116/bin/wasm-opt"
[INFO]: Optimizing wasm binaries with `wasm-opt`...
[INFO  wasm_pack::child] Running "/nix/store/bpbyjl98gyjlbkxskrz9l4r6ykill285-binaryen-116/bin/wasm-opt" "/tmp/nix-build-chess_erdos.drv-0/generated/wasm-building/chess_erdos_bg.wasm" "-o" "/tmp/nix-build-chess_erdos.drv-0/generated/wasm-building/chess_erdos_bg.wasm-opt.wasm" "-O"
[INFO  wasm_pack::child] Running "/nix/store/bpbyjl98gyjlbkxskrz9l4r6ykill285-binaryen-116/bin/wasm-opt" "/tmp/nix-build-chess_erdos.drv-0/generated/wasm-building/chess_erdos_bg.wasm" "-o" "/tmp/nix-build-chess_erdos.drv-0/generated/wasm-building/chess_erdos_bg.wasm-opt.wasm" "-O"
[INFO  wasm_pack::child] Running "/nix/store/bpbyjl98gyjlbkxskrz9l4r6ykill285-binaryen-116/bin/wasm-opt" "/tmp/nix-build-chess_erdos.drv-0/generated/wasm-building/chess_erdos_bg.wasm" "-o" "/tmp/nix-build-chess_erdos.drv-0/generated/wasm-building/chess_erdos_bg.wasm-opt.wasm" "-O"
[INFO  wasm_pack::child] Running "/nix/store/bpbyjl98gyjlbkxskrz9l4r6ykill285-binaryen-116/bin/wasm-opt" "/tmp/nix-build-chess_erdos.drv-0/generated/wasm-building/chess_erdos_bg.wasm" "-o" "/tmp/nix-build-chess_erdos.drv-0/generated/wasm-building/chess_erdos_bg.wasm-opt.wasm" "-O"
...

🤔 Expected Behavior

wasm-opt running once.

👟 Steps to reproduce

It looks like /tmp mounted as a tmpfs is a problem. It stopped working when I switched my /tmp folder to tmpfs and it does not reproduce when I try to run wasm-opt somewhere else. So I guess steps are:

1. Mount some folder as tmpfs
2. Try to run wasm-pack -d <tmpfs_folder>

What happens is probably tmpfs behaves weird with .read_dir() and .rename() here: src/wasm_opt.rs#L34, resulting in newly moved file to be picked up by the next iteration of the .read_dir(). Maybe it should extract the full list of files to process first, then process all files in a separate loop?

🌍 Your environment

Include the relevant details of your environment.
wasm-pack version: 0.12.1
rustc version: 1.77.0-nightly 2023-12-30