sp-core's full_crypto feature flag breaks no_std builds.

[clangenb]

Since commit: bfc6fb4

This is because, the secp256k1 global-context feature implies std:

substrate/primitives/core/Cargo.toml

Line 59 in b36030a

secp256k1 = { version = "0.21.2", default-features = false, features = ["recovery", "global-context"], optional = true }

I currently lack the overview if disabling global-context in full_crypto would be a reasonable choice. My intuition would say it is enough for SGX-enclave because we are already in an enhanced security environment.

[bkchr]

Ty for the report. It will be fixed with: #11006

[clangenb]

Wow, thanks for the immediate fix!