diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index 0662c3da6d..be1c28c854 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -6986,7 +6986,6 @@ version = "3.0.0"
 dependencies = [
  "log",
  "sp-core",
- "sp-std",
  "sp-wasm-interface",
  "thiserror",
 ]
@@ -7962,7 +7961,6 @@ dependencies = [
 name = "sc-runtime-test"
 version = "2.0.0"
 dependencies = [
- "sc-allocator",
  "sp-core",
  "sp-io",
  "sp-runtime",
diff --git a/substrate/client/allocator/Cargo.toml b/substrate/client/allocator/Cargo.toml
index 4911e47dfd..43a3bae4e5 100644
--- a/substrate/client/allocator/Cargo.toml
+++ b/substrate/client/allocator/Cargo.toml
@@ -14,16 +14,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-sp-std = { version = "3.0.0", path = "../../primitives/std", default-features = false }
-sp-core = { version = "3.0.0", path = "../../primitives/core", default-features = false }
-sp-wasm-interface = { version = "3.0.0", path = "../../primitives/wasm-interface", default-features = false }
+sp-core = { version = "3.0.0", path = "../../primitives/core" }
+sp-wasm-interface = { version = "3.0.0", path = "../../primitives/wasm-interface" }
 log = "0.4.11"
-thiserror = { version = "1.0.21" }
-
-[features]
-default = [ "std" ]
-std = [
-	"sp-std/std",
-	"sp-core/std",
-	"sp-wasm-interface/std",
-]
+thiserror = "1.0.21"
diff --git a/substrate/client/allocator/src/error.rs b/substrate/client/allocator/src/error.rs
index d28484d34f..e880e8d0ae 100644
--- a/substrate/client/allocator/src/error.rs
+++ b/substrate/client/allocator/src/error.rs
@@ -16,8 +16,7 @@
 // limitations under the License.
 
 /// The error type used by the allocators.
-#[derive(sp_core::RuntimeDebug)]
-#[derive(thiserror::Error)]
+#[derive(thiserror::Error, Debug)]
 pub enum Error {
 	/// Someone tried to allocate more memory than the allowed maximum per allocation.
 	#[error("Requested allocation size is too large")]
diff --git a/substrate/client/allocator/src/freeing_bump.rs b/substrate/client/allocator/src/freeing_bump.rs
index 1fc6dc31f7..0f3639803f 100644
--- a/substrate/client/allocator/src/freeing_bump.rs
+++ b/substrate/client/allocator/src/freeing_bump.rs
@@ -67,7 +67,7 @@
 //!   This is more pronounced (in terms of absolute heap amounts) with larger allocation sizes.
 
 use crate::Error;
-use sp_std::{mem, convert::{TryFrom, TryInto}, ops::{Range, Index, IndexMut}};
+use std::{mem, convert::{TryFrom, TryInto}, ops::{Range, Index, IndexMut}};
 use sp_wasm_interface::{Pointer, WordSize};
 
 /// The minimal alignment guaranteed by this allocator.
diff --git a/substrate/client/executor/runtime-test/Cargo.toml b/substrate/client/executor/runtime-test/Cargo.toml
index 2f06556644..9e1cd5bb09 100644
--- a/substrate/client/executor/runtime-test/Cargo.toml
+++ b/substrate/client/executor/runtime-test/Cargo.toml
@@ -13,7 +13,6 @@ repository = "https://github.com/paritytech/substrate/"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-sc-allocator = { version = "3.0.0", default-features = false, path = "../../allocator" }
 sp-core = { version = "3.0.0", default-features = false, path = "../../../primitives/core" }
 sp-io = { version = "3.0.0", default-features = false, path = "../../../primitives/io" }
 sp-runtime = { version = "3.0.0", default-features = false, path = "../../../primitives/runtime" }
@@ -27,7 +26,6 @@ substrate-wasm-builder = { version = "4.0.0", path = "../../../utils/wasm-builde
 [features]
 default = [ "std" ]
 std = [
-	"sc-allocator/std",
 	"sp-core/std",
 	"sp-io/std",
 	"sp-runtime/std",