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These changes do up the actual MSRV to at least Rust 1.45, but that was released 3 years ago on
July 16, 2020
so it shouldn't be an issue. I did a version bump anyway due to the MSRV bump and the updated 2021 edition is more constricting anyway.From the
proc-macro-hack
crate:Dropping this crate and using the std
#[proc_macro]
lets it build on stable Rust by default, without flags. Thestable
feature is still included due to the flags in the test modules, but has no actual impact on the code - I'm not sure what to do about it, but you can remove thestable
feature and everything works if you delete the requirement of the nightly only feature in the tests.proc-macro-hack
2021
(not required to compile on stable, could revert)libflate
to 2.0 (not required to compile on stable, could revert)0.3.0
due to MSRV bump