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Diffstat (limited to 'crates/load-cargo/src/lib.rs')
| -rw-r--r-- | crates/load-cargo/src/lib.rs | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/crates/load-cargo/src/lib.rs b/crates/load-cargo/src/lib.rs index 79d6fe36b5..ec37d88e60 100644 --- a/crates/load-cargo/src/lib.rs +++ b/crates/load-cargo/src/lib.rs @@ -407,8 +407,7 @@ impl ProcMacroExpander for Expander { call_site: Span, mixed_site: Span, ) -> Result<tt::Subtree<Span>, ProcMacroExpansionError> { - let env = env.iter().map(|(k, v)| (k.to_owned(), v.to_owned())).collect(); - match self.0.expand(subtree, attrs, env, def_site, call_site, mixed_site) { + match self.0.expand(subtree, attrs, env.clone(), def_site, call_site, mixed_site) { Ok(Ok(subtree)) => Ok(subtree), Ok(Err(err)) => Err(ProcMacroExpansionError::Panic(err.0)), Err(err) => Err(ProcMacroExpansionError::System(err.to_string())), |