Cargo build fails with "error[E0308]: mismatched types" Error

[vwugd97]

Issue description

I'm trying to build nat with my Debian 10 installation. It fails with a "error[E0308]: mismatched types" error.

Steps to reproduce the issue

1. git clone https://github.com/willdoescode/nat.git
2. cd ./nat
3. cargo build --release

What's the expected result?

• The build should work.

What's the actual result?

• The build does not work and fails with the following error Message:

Compiling nat v1.0.9 (/home/[USERNAME]/Workspace/git/nat)
     Running `rustc --crate-name nat --edition=2018 src/main.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C opt-level=3 -C metadata=adba114910da65c6 -C extra-filename=-adba114910da65c6 --out-dir /home/[USERNAME]/Workspace/git/nat/target/release/deps -L dependency=/home/[USERNAME]/Workspace/git/nat/target/release/deps --extern ansi_term=/home/[USERNAME]/Workspace/git/nat/target/release/deps/libansi_term-eadfc56f31755089.rlib --extern chrono=/home/[USERNAME]/Workspace/git/nat/target/release/deps/libchrono-e6ab3cac18a449c9.rlib --extern libc=/home/[USERNAME]/Workspace/git/nat/target/release/deps/liblibc-bec547172235da48.rlib --extern pretty_bytes=/home/[USERNAME]/Workspace/git/nat/target/release/deps/libpretty_bytes-9706fdfae34e91af.rlib --extern structopt=/home/[USERNAME]/Workspace/git/nat/target/release/deps/libstructopt-95351602fc045da0.rlib --extern termion=/home/[USERNAME]/Workspace/git/nat/target/release/deps/libtermion-ba47c272930f5c21.rlib --extern users=/home/[USERNAME]/Workspace/git/nat/target/release/deps/libusers-640153e22e8cf3ab.rlib`
error[E0308]: mismatched types
   --> src/main.rs:207:27
    |
207 |     let user = triplet(mode, S_IRUSR, S_IWUSR, S_IXUSR);
    |                              ^^^^^^^ expected `u16`, found `u32`
    |
help: you can convert an `u32` to `u16` and panic if the converted value wouldn't fit
    |
207 |     let user = triplet(mode, S_IRUSR.try_into().unwrap(), S_IWUSR, S_IXUSR);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^

Here's the complete build log:

cargo build --verbose --release > out.txt 2>&1

out.txt

Additional details

Some System Info that may or may not help:

$ cargo --version
cargo 1.42.1

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 10 (buster)
Release:	10
Codename:	buster

$ uname -a
Linux [HOSTNAME] 5.8.0-0.bpo.2-amd64 #1 SMP Debian 5.8.10-1~bpo10+1 (2020-09-26) x86_64 GNU/Linux

[vwugd97]

Seems like there is already a pull request addressing this issue: #28

[spikecodes]

I am getting this error too. +1 for that PR.

[willdoescode]

#28