Failed to run rustwasmc build

[KeeganJin]

I am trying to follow the tutorial from the secondstate, here is the link,
https://www.secondstate.io/articles/yomo-wasmedge-real-time-data-streams/
since rustwasmc only supports rustc version that is lower that 1.50, so I set the rustc version usingrustup default 1.50.0and run therustwasmc build `, and here is what I got.

$ rustwasmc build '--enable-ext'
Error: Error during execution of cargo metadata: error: failed to download bumpalo v3.13.0

Caused by:
unable to get packages from source

Caused by:
failed to parse manifest at /home/guoqing/.cargo/registry/src/github.com-1ecc6299db9ec823/bumpalo-3.13.0/Cargo.toml

Caused by:
failed to parse the edition key

Caused by:
this version of Cargo is older than the 2021 edition, and only supports 2015 and 2018 editions.
`

[dotgreg]

Same here, not working both with docker and native

Description

Following the bug described in the sample demo github second-state/wasmedge-nodejs-starter#21
I cannot compile using rustwasmc build

root@785c98d79ee0:/app/rust# rustwasmc build
Error: Error during execution of `cargo metadata`:     Updating crates.io index
 Downloading crates ...
  Downloaded wasm-bindgen-shared v0.2.61
  Downloaded unicode-ident v1.0.11
  Downloaded quote v1.0.33
  Downloaded proc-macro2 v1.0.66
error: failed to parse manifest at `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro2-1.0.66/Cargo.toml`

Caused by:
  failed to parse the `edition` key

Caused by:
  this version of Cargo is older than the `2021` edition, and only supports `2015` and `2018` editions.

root@785c98d79ee0:/app/rust# lsb_release -a; rustc --version; cargo --version; rustwasmc --version;
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.3 LTS
Release:        20.04
Codename:       focal
rustc 1.50.0 (cb75ad5db 2021-02-10)
cargo 1.50.0 (f04e7fab7 2021-02-04)
rustwasmc 0.1.29
root@785c98d79ee0:/app/rust# 

Expected

Compilation should work without error

Environment

Reproduced both on :

• Docker wasmedge/appdev_x86_64:0.8.2

root@785c98d79ee0:/app/rust# lsb_release -a; rustc --version; cargo --version; rustwasmc --version;
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.3 LTS
Release:        20.04
Codename:       focal
rustc 1.50.0 (cb75ad5db 2021-02-10)
cargo 1.50.0 (f04e7fab7 2021-02-04)
rustwasmc 0.1.29
root@785c98d79ee0:/app/rust# 

• Native Ubuntu 21.04 LTS x86_64

Steps to Reproduce

I followed the steps described in the tutorial : https://www.secondstate.io/articles/getting-started-with-rust-function/

# Get the code
$ git clone https://github.com/second-state/wasmedge-nodejs-starter
$ cd wasmedge-nodejs-starter

# Run Docker container
$ docker pull wasmedge/appdev_x86_64:0.8.2
$ docker run -p 3000:3000 --rm -it -v $(pwd):/app wasmedge/appdev_x86_64:0.8.2
(docker) $ cd /app

$ rustwasmc build