Avoid querying attributes in item tree lowering #6909
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ItemTree is per-file, so there is no unique crate associated with it. This means that it cannot know the active CfgOptions and thus couldn't handle `cfg_attr`. Prepare it for `cfg_attr`s by avoiding accessing attributes.
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ItemTree is per-file, so there is no unique crate associated with it.
This means that it cannot know the active CfgOptions and thus couldn't
handle
cfg_attr.Prepare it for
cfg_attrs by avoiding accessing attributes.bors r+