Fix E0620: Unresolved Import in Rust

Fri, 17 Jul 2026 00:44:04 +0800

1. Symptoms

When the Rust compiler encounters error E0620, you will see output similar to the following in your terminal:

error[E0620]: unresolved import
 --> src/main.rs:3:5
  |
3 | use std::collections::HashMap;
  |     ^^^^^^^^^^^^^^^^^^^^^^^ unresolved import
  |
  = help: possible candidates are found in other crates, provide at least one additional import path like `use crate_name::collections::HashMap`

Alternatively, when referencing a module that doesn’t exist:

error[E0620]: unresolved import `foo::bar::baz`
 --> src/lib.rs:5:12
  |
5 | use foo::bar::baz::Quux;
  |            ^^^^^^^^^^^ unresolved import

The error manifests in several observable ways depending on the context. When you attempt to import a module that has not been declared in the nearest Cargo.toml or that doesn’t exist in the specified path, the compiler halts compilation and reports this specific error code. The error message explicitly states “unresolved import” and pinpoints the exact location in your source file where the problematic import statement resides.

E0620 on ErrorVault — Developer Error Code Dictionary

Fix E0620: Unresolved Import in Rust

1. Symptoms