cannot run rustc on Raspberry PI

[maxcli]

Problem

Using Raspberry PI 4 with Raspbian GNU/Linux ver 11
I installed Rustc : curl https://sh.rustup.rs/ -sSf | sh
I have /home/pi/.cargo/bin in my path

pi@rpi4:~ $ rustc –version
error: command failed: 'rustc': No such file or directory (os error 2)

note : I installed rustup after I installed rust

Any suggestions ?

Steps

curl https://sh.rustup.rs/ -sSf | sh
rustc –version

Possible Solution(s)

No response

Notes

No response

Rustup version

1.26.0 (5af9b9484 2023-04-05)

Installed toolchains

pi@rpi4:~ $ rustup show
Default host: aarch64-unknown-linux-gnu
rustup home:  /home/pi/.rustup

stable-aarch64-unknown-linux-gnu (default)
(error reading rustc version)

[kLiHz]

Since you've mentioned "I installed rustup after I installed rust", where is your previous rust installation located and how is it installed?

And there might be ambiguity in your issue: you said you installed Rustc : curl https://sh.rustup.rs/ -sSf | sh, however this command will actually download and run rustup.

[rami3l]

It might be better to first use which rustc to see whether you are calling the rustc that comes with rustup.
If you want to manage rust installations with your own system package manager (e.g. apt), you should probably NOT use rustup; otherwise, you might need to uninstall rust system-wide (e.g. apt uninstall rust).

[rbtcollins]

What is the output of rustup show ? And echo $PATH ?

[maxcli]

CHMOD shows execute.
Is my path wrong?

=======================================
rustup shosw :
Default host: aarch64-unknown-linux-gnu
rustup home: /home/pi/.rustup

stable-aarch64-unknown-linux-gnu (default)
(error reading rustc version) <===================why do I get a error ?

========== ===================
my path:
pi@rpi4:~ $ echo "$PATH"
/home/pi/.local/bin:/home/pi/.cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games:/snap/bin

sudo find shows rustc in multiple locations :

/snap/rustup/1023/bin/rustc
/snap/bin/rustc
/home/pi/.cargo/bin/rustc
/home/pi/.rustup/toolchains/stable-aarch64-unknown-linux-gnu/bin/rustc
/home/pi/.rustup/toolchains/stable-aarch64-unknown-linux-gnu/share/doc/rust/html/rustc

======================================

I initially installed rustc like this :
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

"which rustc" shows
/home/pi/.cargo/bin/rustc

[zedifen]

Can you try running /home/pi/.rustup/toolchains/stable-aarch64-unknown-linux-gnu/bin/rustc directly and see what happens?

And have you tried reinstalling rustup? Like, run rustup self uninstall then install rustup and the toolchain again by curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh.

[maxcli]

Hi Zedifen,

Same error when I run from other folder :
/home/pi/.rustup/toolchains/stable-aarch64-unknown-linux-gnu/bin/rustc --version
-bash: /home/pi/.rustup/toolchains/stable-aarch64-unknown-linux-gnu/bin/rustc: No such file or directory

============================================================

I ran : rustup self uninstall .
Then I tried to install - it saw this message below. Should I set RUSTUP_INIT_SKIP_PATH_CHECK to yes ?

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Mon Aug 14 08:59:08 2023
pi@rpi4:~ $ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
info: downloading installer
warning: it looks like you have an existing installation of Rust at:
warning: /snap/bin
warning: It is recommended that rustup be the primary Rust installation.
warning: Otherwise you may have confusion unless you are careful with your PATH
warning: If you are sure that you want both rustup and your already installed Rust
warning: then please reply y' or yes' or set RUSTUP_INIT_SKIP_PATH_CHECK to yes
warning: or pass `-y' to ignore all ignorable checks.
error: cannot install while Rust is installed

[zedifen]

Do you remember installing Rust via snap in the past? As the message suggests, if you're using rustup then I think it's better to only use rustup to avoid conflicts.

You can try sudo snap list to see which packages are installed and remove it using sudo snap remove <package-name>.

[maxcli]

ok, I ran sudo snap remove rustup ,
Then did install , and reboot.
Now I see .cargo\in in my path
but rustc still has same error .

[rami3l]

ok, I ran sudo snap remove rustup ,
Then did install , and reboot.
Now I see .cargo\in in my path
but rustc still has same error .

This could mean that you have issues with your /home/pi/.rustup/toolchains/stable-aarch64-unknown-linux-gnu installation (probably permission-related ones, or you have a corrupted installation). I recommend uninstall the toolchain (rustup toolchain uninstall stable), install it again (rustup default stable) and see whether the output changes.

[zedifen]

Hi, @rami3l, it looks like they may already perform a reinstallation? Any idea of other reasons?

[rami3l]

@zedifen @maxcli

The (error reading rustc version) happens when rustc can be executed (via a rustup subprocess) but there is not a single line of stdout output.
I believe this is because /home/pi/.rustup/toolchains/stable-aarch64-unknown-linux-gnu/bin/rustc gets executed but is somehow corrupted (or simply gets the wrong permission).

This is coherent with the original feedback, which is a single line of stderr:

error: command failed: 'rustc': No such file or directory (os error 2)

If I were you, I'll remove this rustup installation (together with ~/.cargo and ~/.rustup) and start over, as I said before.
However, if reinstalling cannot help, then I can only suggest recursively setting the permission of /home/pi/.rustup to something like 744.

[zedifen]

I think rustup self uninstall does remove both ~/.cargo and ~/.rustup. @maxcli can you try calling /home/pi/.rustup/toolchains/stable-aarch64-unknown-linux-gnu/bin/rustc again and see what's the output?

Additionally, you can try using file or ldd on /home/pi/.rustup/toolchains/stable-aarch64-unknown-linux-gnu/bin/rustc and see what happens.

[maxcli]

I have a work around. Thanks for all your help.
I tried the install on a clean Raspberry pi, and it worked fine.
pi@rpi3:~ $ rustc --version
rustc 1.71.1 (eb26296b5 2023-08-03)