[Bug] minor issue when build

[depool-live]

🐛 Bug Report

rust/environment/src/environment.rs:17:5

|
17 | use aleo_account::Address;
| ^^^^^^^^^^^^^^^^^^^^^
|
= note: #[warn(unused_imports)] on by default

warning: unused imports: CRH, CommitmentScheme, SignatureScheme
--> rust/environment/src/environment.rs:20:14
|
20 | traits::{CommitmentScheme, CRH},
| ^^^^^^^^^^^^^^^^ ^^^
21 | SignatureScheme,
| ^^^^^^^^^^^^^^^

warning: unused import: std::hash::Hash
--> rust/environment/src/environment.rs:33:5
|
33 | use std::hash::Hash;
| ^^^^^^^^^^^^^^^

warning: 3 warnings emitted

Compiling aleo-record v0.2.0 (~/aleo/aleo/rust/record)
warning: glob import doesn't reexport anything because no candidate is public enough
--> rust/record/src/helpers/mod.rs:18:9
|
18 | pub use decode::*;
| ^^^^^^^^^
|
= note: #[warn(unused_imports)] on by default

warning: glob import doesn't reexport anything because no candidate is public enough
--> rust/record/src/helpers/mod.rs:21:9
|
21 | pub use decrypt::*;
| ^^^^^^^^^^

warning: glob import doesn't reexport anything because no candidate is public enough
--> rust/record/src/helpers/mod.rs:24:9
|
24 | pub use encode::*;
| ^^^^^^^^^

warning: glob import doesn't reexport anything because no candidate is public enough
--> rust/record/src/helpers/mod.rs:27:9
|
27 | pub use encrypt::*;
| ^^^^^^^^^^

warning: variable does not need to be mutable
--> rust/record/src/record_builder.rs:141:9
|
141 | mut self,
| ----^^^^
| |
| help: remove this mut
|
= note: #[warn(unused_mut)] on by default

warning: field is never read: elements
--> rust/record/src/encoded.rs:23:5
|
23 | elements: Vec,
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: #[warn(dead_code)] on by default

warning: field is never read: final_sign_high
--> rust/record/src/encoded.rs:24:5
|
24 | final_sign_high: bool,
| ^^^^^^^^^^^^^^^^^^^^^

warning: struct is never constructed: Decode
--> rust/record/src/helpers/decode.rs:36:19
|
36 | pub(crate) struct Decode;
| ^^^^^^

warning: associated function is never used: decode
--> rust/record/src/helpers/decode.rs:39:19
|
39 | pub(crate) fn decode<E: Environment>(
| ^^^^^^

warning: 9 warnings emitted

Compiling aleo v0.2.0 (~/aleo/aleo)
Finished release [optimized] target(s) in 2m 11s
-->

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Expected Behavior

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Your Environment

• aleo v0.2.0
• rustc 1.53.0
• ubuntu 20

[howardwu]

#90

[collinc97]

these warnings are fixed on the main branch as of commit d17b0b3