Fix E0090: Unresolved Import in Rust

Sat, 08 Aug 2026 19:56:04 +0800

1. Symptoms

When Rust encounters error E0090, the compiler produces output that clearly identifies which import statement cannot be resolved. The error message includes the exact line number and the problematic path that the compiler failed to find.

error[E0090]: unresolved import `module::submodule`
 --> src/main.rs:3:5
  |
3 | use module::submodule;
  |     ^^^^^^^^^^^^^^^^ could not find `submodule` in `module`

In more complex scenarios involving external crates, the error might indicate that a crate itself cannot be found:

error[E0090]: unresolved import `external_crate::some_module`
 --> src/lib.rs:5:12
  |
5 | use external_crate::some_module;
  |            ^^^^^^^^^^^ could not find `some_module` in `external_crate` which is not a direct dependency

The compiler may also suggest alternative paths or modules that exist when the exact path cannot be resolved. When the import refers to a non-existent item within an otherwise valid module structure, the error points specifically to the missing item name.

Unresolved on ErrorVault — Developer Error Code Dictionary

Fix E0090: Unresolved Import in Rust

1. Symptoms