Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [location searched: directory source `/usr/share/cargo/registry` (which is replacing registry `crates-io`)]: [It is the chunk that populates the local registry with what should be all the Rust packages required to build this package.]
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[error: failed to select a version for the requirement `syn = "^1.0.73"`]: [This is where the build step fails. ]

Issue: The build failed because a dependency, `syn = "^1.0.73"` was missing. The dependency was required by a separate small package also in the source that supports the main package. A previous step had incorrectly skipped installing that package in the local registry. 
Resolution: Currently, the only way to fix the issue is to declare a workspace table in the upstream package's Cargo.toml file and to add both the main package and the smaller package to the members table of the workspace table.