Fix E0796: Destructor Names Must Not Be Used Outside of Their Trait

Tue, 28 Jul 2026 00:44:04 +0800

1. Symptoms

When the Rust compiler encounters error E0796, you will see a message similar to the following in your build output:

error[E0796]: destructor names must not be used outside of their trait
  --> src/main.rs:10:5
   |
10 |     SomeType::drop(some_instance);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot call a destructor by name
   |
   = note: this error occurs if you try to call a destructor directly.
     Use the `std::mem::drop` function or implement the `Drop` trait instead.

The compiler will reject the code and halt compilation at the point where you attempted to invoke the destructor. Common patterns that trigger this error include explicit calls to TypeName::drop(), attempting to manually run cleanup code through the destructor mechanism, or trying to access drop-related internals directly from user code. The error message explicitly guides developers toward the std::mem::drop function as the idiomatic alternative for explicitly dropping values.

E0796 on ErrorVault — Developer Error Code Dictionary

Fix E0796: Destructor Names Must Not Be Used Outside of Their Trait

1. Symptoms