chore: fix some typos (#15329)

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 fix some typos

Author: epage

crates/resolver-tests/src/lib.rs

@@ -173,7 +173,7 @@ pub fn resolve_with_global_context_raw(
                 // we found a case that causes a panic and did not use all of the input.
                 // lets print the part of the input that was used for minimization.
                 eprintln!(
-                    "Part used befor drop: {:?}",
+                    "Part used before drop: {:?}",
                     PrettyPrintRegistry(
                         self.list
                             .iter()

src/cargo/core/compiler/future_incompat.rs

@@ -8,7 +8,7 @@
 //! a [`FutureIncompatReport`], Cargo gathers and forwards it as a
 //! `Message::FutureIncompatReport` to the main thread.
 //!
-//! To have the correct layout of strucutures for deserializing a report
+//! To have the correct layout of structures for deserializing a report
 //! emitted by the compiler, most of structure definitions, for example
 //! [`FutureIncompatReport`], are copied either partially or entirely from
 //! [compiler/rustc_errors/src/json.rs][2] in rust-lang/rust repository.

src/cargo/core/manifest.rs

@@ -197,7 +197,7 @@ macro_rules! metadata_envs {
     }
 }
 
-// Metadata enviromental variables that are emitted to rustc. Usable by `env!()`
+// Metadata environmental variables that are emitted to rustc. Usable by `env!()`
 // If these change we need to trigger a rebuild.
 // NOTE: The env var name will be prefixed with `CARGO_PKG_`
 metadata_envs! {