Rust: error[E0599]: no method named `push_str` found for struct `Vec<String>` in the current scope
The type doesn't have that method — wrong type, trait not in scope, or missing derive/feature.
error[E0599]: no method named `push_str` found for struct `Vec<String>` in the current scopeno method named `x` found for enum `Option<T>` in the current scopethe method `clone` exists for struct `Foo`, but its trait bounds were not satisfiedno function or associated item named `new` found for structitems from traits can only be used if the trait is in scope Meaning
Check the actual type (let x: () = x; trick), import the trait that provides the method (use std::io::Write;, use std::str::FromStr;), enable crate features, derive traits (Clone), and note methods on Option/Result need unwrapping first. Arrays vs slices vs Vec differ.
Common causes
- Trait not imported (
use std::io::Write) - Wrong type (Option<T> instead of T)
- Crate feature not enabled
- Missing
#[derive(Clone)]for.clone() - Method exists only on a different type
⚡ Quick fix
- Import the trait providing the method
- Unwrap/map the
Option/Resultfirst - Enable the needed feature in Cargo.toml
Detailed fix by platform
Rust
use std::io::Write; stdout.flush()?;
How to diagnose
- Type — What is it?
- Trait — In scope?
- Feature — Enabled?
🔧 Still not fixed?
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Most viewed in Rust
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Where this error sits
Origin: Application & API. Errors that are often confused with or caused by this one (click to open):
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Last updated 5 Nov 2026