try to fix nostd

Author: weikengchen

Cargo.toml

@@ -27,12 +27,10 @@ ark-ec = { git = "https://github.com/arkworks-rs/algebra", default-features = fa
 ark-poly = { git = "https://github.com/arkworks-rs/algebra", default-features = false }
 
 ark-std = { git = "https://github.com/arkworks-rs/utils", default-features = false }
-
 ark-relations = { git = "https://github.com/arkworks-rs/snark", default-features = false }
+ark-r1cs-std = { git = "https://github.com/arkworks-rs/r1cs-std", default-features = false  }
 
-ark-r1cs-std = { git = "https://github.com/arkworks-rs/r1cs-std" }
-
-bench-utils = { git = "https://github.com/arkworks-rs/utils" }
+bench-utils = { git = "https://github.com/arkworks-rs/utils", default-features = false  }
 rand_core = { version = "0.5", default-features = false }
 digest = "0.8"
 rayon = { version = "1", optional = true }