diff --git a/rust/flatbuffers/src/builder.rs b/rust/flatbuffers/src/builder.rs
index 68cb434b7545..fe2caa090079 100644
--- a/rust/flatbuffers/src/builder.rs
+++ b/rust/flatbuffers/src/builder.rs
@@ -16,10 +16,13 @@
 
 extern crate smallvec;
 
-use std::cmp::max;
-use std::marker::PhantomData;
-use std::ptr::write_bytes;
-use std::slice::from_raw_parts;
+use alloc::vec;
+use alloc::vec::Vec;
+
+use core::cmp::max;
+use core::marker::PhantomData;
+use core::ptr::write_bytes;
+use core::slice::from_raw_parts;
 
 use endian_scalar::{read_scalar, emplace_scalar};
 use primitives::*;
@@ -605,7 +608,7 @@ impl<'fbb> FlatBufferBuilder<'fbb> {
     fn assert_nested(&self, fn_name: &'static str) {
         // we don't assert that self.field_locs.len() >0 because the vtable
         // could be empty (e.g. for empty tables, or for all-default values).
-        debug_assert!(self.nested, format!("incorrect FlatBufferBuilder usage: {} must be called while in a nested state", fn_name));
+        debug_assert!(self.nested, "incorrect FlatBufferBuilder usage: {} must be called while in a nested state", fn_name);
     }
     #[inline]
     fn assert_not_nested(&self, msg: &'static str) {
diff --git a/rust/flatbuffers/src/endian_scalar.rs b/rust/flatbuffers/src/endian_scalar.rs
index 3e7244e09bc8..1187095840fb 100644
--- a/rust/flatbuffers/src/endian_scalar.rs
+++ b/rust/flatbuffers/src/endian_scalar.rs
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-use std::mem::size_of;
+use core::mem::size_of;
 
 /// Trait for values that must be stored in little-endian byte order, but
 /// might be represented in memory as big-endian. Every type that implements
diff --git a/rust/flatbuffers/src/follow.rs b/rust/flatbuffers/src/follow.rs
index 4d3eff776459..6e7490d39a18 100644
--- a/rust/flatbuffers/src/follow.rs
+++ b/rust/flatbuffers/src/follow.rs
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-use std::marker::PhantomData;
+use core::marker::PhantomData;
 
 /// Follow is a trait that allows us to access FlatBuffers in a declarative,
 /// type safe, and fast way. They compile down to almost no code (after
diff --git a/rust/flatbuffers/src/lib.rs b/rust/flatbuffers/src/lib.rs
index 5e304344c97c..ba81632bd901 100644
--- a/rust/flatbuffers/src/lib.rs
+++ b/rust/flatbuffers/src/lib.rs
@@ -28,6 +28,10 @@
 //! At this time, to generate Rust code, you will need the latest `master` version of `flatc`, available from here: https://github.com/google/flatbuffers
 //! (On OSX, you can install FlatBuffers from `HEAD` with the Homebrew package manager.)
 
+#![no_std]
+
+extern crate alloc;
+
 mod builder;
 mod endian_scalar;
 mod follow;
diff --git a/rust/flatbuffers/src/primitives.rs b/rust/flatbuffers/src/primitives.rs
index 59176b8f83ae..e43740325b3e 100644
--- a/rust/flatbuffers/src/primitives.rs
+++ b/rust/flatbuffers/src/primitives.rs
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-use std::marker::PhantomData;
-use std::mem::size_of;
-use std::ops::Deref;
+use core::marker::PhantomData;
+use core::mem::size_of;
+use core::ops::Deref;
 
 use endian_scalar::{emplace_scalar, read_scalar, read_scalar_at};
 use follow::Follow;
diff --git a/rust/flatbuffers/src/push.rs b/rust/flatbuffers/src/push.rs
index 2b307a3a783c..c6c9d790206c 100644
--- a/rust/flatbuffers/src/push.rs
+++ b/rust/flatbuffers/src/push.rs
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-use std::cmp::max;
-use std::mem::{align_of, size_of};
+use core::cmp::max;
+use core::mem::{align_of, size_of};
 
 use endian_scalar::emplace_scalar;
 
diff --git a/rust/flatbuffers/src/vector.rs b/rust/flatbuffers/src/vector.rs
index 397089a664ea..0a71de1870f6 100644
--- a/rust/flatbuffers/src/vector.rs
+++ b/rust/flatbuffers/src/vector.rs
@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-use std::marker::PhantomData;
-use std::mem::size_of;
-use std::slice::from_raw_parts;
-use std::str::from_utf8_unchecked;
+use core::marker::PhantomData;
+use core::mem::size_of;
+use core::slice::from_raw_parts;
+use core::str::from_utf8_unchecked;
 
 #[cfg(target_endian = "little")]
 use endian_scalar::EndianScalar;
diff --git a/rust/flatbuffers/src/vtable_writer.rs b/rust/flatbuffers/src/vtable_writer.rs
index 119f794cd1c7..fa2cb82984ff 100644
--- a/rust/flatbuffers/src/vtable_writer.rs
+++ b/rust/flatbuffers/src/vtable_writer.rs
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-use std::ptr::write_bytes;
+use core::ptr::write_bytes;
 
 use endian_scalar::{emplace_scalar, read_scalar};
 use primitives::*;