Publish target's "doc" setting when emitting metadata
Prior to this commit `cargo metadata` would not emit the value of a
target's "doc" setting, used by `cargo doc` to determine whether
documentation should be generated. However, this information is useful
for machine programs interested in such targets, and the information is
already made available on the internal representation of a target, so
this commit just exposes that during target serialization for emit.
cf https://github.com/deadlinks/cargo-deadlinks/issues/99
Prior to this commit `cargo metadata` would not emit the value of a
target's "doc" setting, used by `cargo doc` to determine whether
documentation should be generated. However, this information is useful
for machine programs interested in such targets, and the information is
already made available on the internal representation of a target, so
this commit just exposes that during target serialization for emit.
cf https://github.com/deadlinks/cargo-deadlinks/issues/99
Use associated constants directly on primitive types instead of modules
This PR is in no way critical. It's more of a code cleanup. It comes as a result of me making https://github.com/rust-lang/rust/pull/70857 and search-and-replacing all usage of the soft-deprecated ways of reaching primitive type constants.
It makes the code slightly shorter, that's basically it. And showcases the recommended way of reaching these consts on new code :)
Recently added in rust-lang/rust#64158 the `-Z panic-abort-tests` flag
to the compiler itself will activate a mode in the `test` crate which
enables running tests even if they're compiled with `panic=abort`. It
effectively runs a test-per-process.
This commit brings the same support to Cargo, adding a `-Z
panic-abort-tests` flag to Cargo which allows building tests in
`panic=abort` mode. While I wanted to be sure to add support for this in
Cargo before we stabilize the flag in `rustc`, I don't actually know how
we're going to stabilize this here. Today Cargo will automatically
switch test targets to `panic=unwind`, and so if we actually were to
stabilize this flag then this configuration would break:
[profile.dev]
panic = 'abort'
In that case tests would be compiled with `panic=unwind` (due to how
profiles work today) which would clash with crates also being compiled
with `panic=abort`. I'm hopeful though that we can perhaps either figure
out a solution for this and maybe even integrate it with the ongoing
profiles work.
Some tools can support rust doctests (e.g. highlighting
or launching). So it should be possible to find out if
doctests are enabled for a target or not. This commit
adds `doctest` field to `cargo metadata` output.
