visual studio code with rust-analyzer reports nightly compiler needed

[winksaville]

Description

I ran VSCODE using code . from root of lighthouse repo and the following message was displayed:

rust-analyzer failed to load workspace: Failed to read Cargo metadata from Cargo.toml file /home/wink/prgs/rust/forks/lighthouse/Cargo.toml, Some(Version { major: 1, minor: 52, patch: 0 }): Failed to run `"cargo" "metadata" "--format-version" "1" "--manifest-path" "/home/wink/prgs/rust/forks/lighthouse/Cargo.toml" "--filter-platform" "x86_64-unknown-linux-gnu"`: `cargo metadata` exited with an error: error: failed to parse manifest at `/home/wink/prgs/rust/forks/lighthouse/account_manager/Cargo.toml`

Caused by:
  feature `edition2021` is required

  this Cargo does not support nightly features, but if you
  switch to nightly channel you can add
  `cargo-features = ["edition2021"]` to enable this feature

Version

wink@3900x 22-08-26T16:39:54.991Z:~/prgs/rust/forks/lighthouse (stable)
$ git log -1 --format=short
commit 18c61a5e8be3e54226a86a69b96f8f4f7fd790e4 (HEAD -> stable, upstream/stable)
Author: Paul Hauner <[email protected]>

    v3.0.0 (#3464)
wink@3900x 22-08-26T16:40:18.885Z:~/prgs/rust/forks/lighthouse (stable)
$ rustc --version
rustc 1.52.1 (9bc8c42bb 2021-05-09)
wink@3900x 22-08-26T16:40:45.797Z:~/prgs/rust/forks/lighthouse (stable)

Present Behaviour

Got an error notification as noted above

Expected Behaviour

Don't expect the error notification.

Steps to resolve

As suggested in the error message, adding rust-toolchain.toml with "nightly" resolves the problem, but if that's the case I suggest adding rust-toolchain.toml to the repo.

wink@3900x 22-08-26T16:29:17.568Z:~/prgs/rust/forks/lighthouse (stable)
$ cat rust-toolchain.toml 
[toolchain]
channel = "nightly"

[pawanjay176]

I think your rustc version is too old. We are currently using 1.63 and minimum supported version is 1.62. We are trying to do a better job of documenting required rust versions. Check this comment #3474 (comment)

[winksaville]

@pawanjay176, that worked and I don't see the error notification and rustup check reports:

wink@3900x 22-08-26T18:22:36.436Z:~/prgs/rust/forks/lighthouse (stable)
$ rustup check
stable-x86_64-unknown-linux-gnu - Up to date : 1.63.0 (4b91a6ea7 2022-08-08)
nightly-x86_64-unknown-linux-gnu - Up to date : 1.65.0-nightly (748038961 2022-08-25)
rustup - Up to date : 1.25.1
wink@3900x 22-08-26T18:23:31.132Z:~/prgs/rust/forks/lighthouse (stable)

But the weird thing is rustc --version is 1.52 if in lighthouse/:

wink@3900x 22-08-26T18:23:31.132Z:~/prgs/rust/forks/lighthouse (stable)
$ rustc --version
rustc 1.52.1 (9bc8c42bb 2021-05-09)

But it's 1.63 if I'm in its parent:

wink@3900x 22-08-26T18:24:47.768Z:~/prgs/rust/forks/lighthouse (stable)
$ cd ..
wink@3900x 22-08-26T18:25:32.838Z:~/prgs/rust/forks
$ rustc --version
rustc 1.63.0 (4b91a6ea7 2022-08-08)

Could you explain that?

[pawanjay176]

Ohh you might have done an override at some point in the lighthouse directory? Try this from the lighthouse directory

rustup override unset

[winksaville]

Sure enough, IIRC something was broken at one point and I was using override. Add good now, TXS!

wink@3900x 22-08-26T19:45:20.035Z:~/prgs/rust/forks/lighthouse (stable)
$ rustup show
Default host: x86_64-unknown-linux-gnu
rustup home:  /home/wink/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-2020-07-10-x86_64-unknown-linux-gnu
nightly-2021-03-25-x86_64-unknown-linux-gnu
nightly-x86_64-unknown-linux-gnu
1.41.0-x86_64-unknown-linux-gnu
1.52.1-x86_64-unknown-linux-gnu

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

wasm32-unknown-unknown
x86_64-unknown-linux-gnu

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

1.52.1-x86_64-unknown-linux-gnu (directory override for '/home/wink/prgs/rust/forks/lighthouse')
rustc 1.52.1 (9bc8c42bb 2021-05-09)

wink@3900x 22-08-26T19:45:25.370Z:~/prgs/rust/forks/lighthouse (stable)
$ rustup override unset
info: override toolchain for '/home/wink/prgs/rust/forks/lighthouse' removed
wink@3900x 22-08-26T19:46:46.258Z:~/prgs/rust/forks/lighthouse (stable)
$ rustup show
Default host: x86_64-unknown-linux-gnu
rustup home:  /home/wink/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-2020-07-10-x86_64-unknown-linux-gnu
nightly-2021-03-25-x86_64-unknown-linux-gnu
nightly-x86_64-unknown-linux-gnu
1.41.0-x86_64-unknown-linux-gnu
1.52.1-x86_64-unknown-linux-gnu

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

aarch64-unknown-linux-gnu
arm-unknown-linux-gnueabihf
thumbv7em-none-eabihf
thumbv7m-none-eabi
wasm32-unknown-unknown
x86_64-unknown-linux-gnu
x86_64-unknown-linux-musl

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

stable-x86_64-unknown-linux-gnu (default)
rustc 1.63.0 (4b91a6ea7 2022-08-08)
wink@3900x 22-08-26T19:46:51.803Z:~/prgs/rust/forks/lighthouse (stable)
$ rustc --version
rustc 1.63.0 (4b91a6ea7 2022-08-08)