`Int` - `inv_mod` #1981

Job	Run time
minimal-versions	30s
build-benchmarks	45s
build (1.83.0, thumbv7em-none-eabi)	44s
clippy	18s
build (1.83.0, wasm32-unknown-unknown)	43s
careful	1m 36s
cross (aarch64-unknown-linux-gnu, stable)	3m 47s
build (stable, thumbv7em-none-eabi)	50s
doc	30s
build (stable, wasm32-unknown-unknown)	43s
cross (powerpc-unknown-linux-gnu, stable)	5m 26s
miri (x86_64-unknown-linux-gnu)	6m 10s
miri (s390x-unknown-linux-gnu)	6m 28s
rustfmt	11s
test (i686-unknown-linux-gnu, 1.83.0, sudo apt update && sudo apt install gcc-multilib)	2m 57s
test (i686-unknown-linux-gnu, stable, sudo apt update && sudo apt install gcc-multilib)	3m 25s
test (x86_64-unknown-linux-gnu, 1.83.0)	1m 48s
test (x86_64-unknown-linux-gnu, stable)	1m 50s
	38m 41s

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