add missing attr
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//! [alloc](https://doc.rust-lang.org/alloc) crate is available to allow boxed trait objects.
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//! These are used to supply user code to the crates.
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#![no_std]
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#![cfg_attr(doc_cfg, feature(doc_cfg))]
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#[cfg(feature = "alloc")]
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extern crate alloc;
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extern crate downcast_rs;
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@ -1 +1 @@
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Subproject commit 03d112cbefa83fd1973cb2bccc88243ee05392bf
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Subproject commit 97c70bf03b769ce3aa100ae771342f6810113a80
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