I want to run an example via Cargo but I am facing an error:
error: failed to parse manifest at `/Users/aviralsrivastava/dev/subxt/Cargo.toml`
The full stacktrace is:
error: failed to parse manifest at `/Users/aviralsrivastava/dev/subxt/Cargo.toml`
Caused by:
feature `edition2021` is required
The package requires the Cargo feature called `edition2021`, but that feature is not stabilized in this version of Cargo (1.56.0-nightly (b51439fd8 2021-08-09)).
Consider adding `cargo-features = ["edition2021"]` to the top of Cargo.toml (above the [package] table) to tell Cargo you are opting in to use this unstable feature.
See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#edition-2021 for more information about the status of this feature.
Based on the suggestion, I go ahead and modify the Cargo.toml:
Consider adding `cargo-features = ["edition2021"]` to the top of Cargo.toml (above the [package] table) to tell Cargo you are opting in to use this unstable feature.
diff --git a/Cargo.toml b/Cargo.toml
index 26a02c7..186d09b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
[workspace]
members = [".", "cli", "codegen", "macro"]
-
+cargo-features = ["edition2021"]
[package]
name = "subxt"
version = "0.15.0"
(END)
I still face the same error as if nothing was changed in the toml file.
How do I resolve the above error in order to use unstable packages?
Update the Rust to satisfy the new edition 2021.
rustup default nightly && rustup update
Thanks to @ken.
Yes, you can use the stable channel too!
But I love nightly personally.