`serde_json` requires either `std` or `alloc` feature enabled.
esplora-client = { version = "0.12.1", default-features = false }
async-trait = { version = "0.1.66", optional = true }
futures = { version = "0.3.26", optional = true }
+serde_json = { version = "1.0", features = ["alloc"] }
[dev-dependencies]
esplora-client = { version = "0.12.0" }
clap = { version = "4.5.17", features = ["derive", "env"] }
rand = "0.8"
serde = { version = "1", features = ["derive"] }
-serde_json = "1.0"
+serde_json = { version = "1.0", features = ["alloc"] }