https://errorvault.dev/tags/e0195/ Recent content in E0195 on ErrorVault — Developer Error Code Dictionary Hugo en-us Fri, 15 May 2026 12:44:04 +0800 https://errorvault.dev/rust/rust-e0195-lifetime-parameter-name-conflict/ Fri, 15 May 2026 12:44:04 +0800 https://errorvault.dev/rust/rust-e0195-lifetime-parameter-name-conflict/ <h2 id="1-symptoms">1. Symptoms</h2> <h2 id="error-e0195-manifests-during-compilation-with-a-clear-diagnostic-message-from-the-rust-compiler">Error E0195 manifests during compilation with a clear diagnostic message from the Rust compiler:</h2> <p>error[E0195]: lifetime parameters or bounds on method <code>baz</code> do not match the trait declaration &ndash;&gt; src/main.rs:10:5 | 5 | fn baz&lt;&lsquo;a&gt;(&amp;self, x: &amp;&lsquo;a str) -&gt; &amp;&lsquo;a str; | &mdash;&ndash; ^ 6 | fn baz&lt;&lsquo;a&gt;(&amp;self, x: &amp;&lsquo;a str) -&gt; &amp;&lsquo;a str; | &mdash;&ndash; ^ | = note: lifetime parameters with same name exist in different scopes: method impl (line 6), trait declaration (line 5)</p>