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Upgrading futures-core 0.2 to 0.3

Breaking0.2.1 → 0.3.34Breaking17Security2Platform4Deprecated3New95Changed27Fixed42Other12

Full comparisonBack to futures-core
BreakingUpgrade verdict

17 breaking changes and 4 platform requirement changes and 2 security fixes.

In plain terms
  • An experimental feature that let code read data before a stream was fully initialized has been removed.
  • Removes the Send bound on the output of RemoteHandle.
  • The `run` method on the thread pool is gone, so code calling it must change.
  • The `poll_seek_relative` method on the buffered reader is no longer available.
Must act Top 5 of 26 that need code or config changes

Requires Rust 1.36 from 0.3.18 (none stated before).

Adds portable-atomic ^1.3.

Drops either.

What you must change

Breaking17
Removes the unstable read-initializer feature.
read-initializer
0.3.19GitHub ReleaseSummarizedView source
Removes the Send bound on the output of RemoteHandle.
RemoteHandleSend
0.3.5GitHub ReleaseSummarizedView source
Removes ThreadPool::run.
ThreadPool::run
0.3.0GitHub ReleaseSummarizedView source
Removes BufReader::poll_seek_relative.
BufReader::poll_seek_relative
0.3.0GitHub ReleaseSummarizedView source
Removes the Stream impl for VecDeque.
StreamVecDeque
0.3.0GitHub ReleaseSummarizedView source
Renames Peekable::peek to poll_peek.
Peekable::peekPeekable::poll_peek
0.3.0GitHub ReleaseSummarizedView source
Renames oneshot::Sender::poll_cancel to poll_canceled.
oneshot::Sender::poll_canceloneshot::Sender::poll_canceled
0.3.0GitHub ReleaseSummarizedView source
Fixes a soundness bug in task::waker_ref, a breaking change allowed because it is a soundness fix.
task::waker_ref
0.3.31GitHub ReleaseSummarizedView source
Fixes type inference in sink::unfold by specifying more of its types, which is a breaking change.
sink::unfold
0.3.10GitHub ReleaseSummarizedView source
Fixes the signature of the LocalSpawn trait, a breaking change.
LocalSpawn
0.3.1GitHub ReleaseSummarizedView source
Changes the Spawn trait and FuturesUnordered::push to take &self.
SpawnFuturesUnordered::push
0.3.0GitHub ReleaseSummarizedView source
Moves Spawn and FutureObj out of futures-core and into futures-task.
SpawnFutureObjfutures-corefutures-task
0.3.0GitHub ReleaseSummarizedView source
Changes the case convention for feature names.
0.3.0GitHub ReleaseSummarizedView source
Moves copy_into and copy_buf_into.
copy_intocopy_buf_into
0.3.0GitHub ReleaseSummarizedView source
Changes SinkExt::send_all to accept a TryStream.
SinkExt::send_allTryStream
0.3.0GitHub ReleaseSummarizedView source
Changes skip to take a usize rather than a u64.
skip
0.3.0GitHub ReleaseSummarizedView source
Fixes a parsing issue in select!/select_biased! that now rejects an odd undocumented syntax previously accepted.
select!select_biased!
0.3.31GitHub ReleaseSummarizedView source
Security2
Fixes a soundness issue in the join! and try_join! macros (#2649).
join!try_join!
0.3.25GitHub ReleaseSummarizedView source
Fixes a heap buffer overflow in AsyncReadExt::read_to_end and AsyncReadExt::read_to_string.
AsyncReadExt::read_to_endAsyncReadExt::read_to_string
0.3.11GitHub ReleaseSummarizedView source
Platform4
Bumps the MSRV of utility crates to Rust 1.71.
0.3.32GitHub ReleaseSummarizedView source
Updates to syn 2, raising the MSRV of utility crates to 1.56.
0.3.28GitHub ReleaseSummarizedView source
Removes the dependency on proc-macro-hack, raising the MSRV of utility crates to 1.45.
proc-macro-hack
0.3.18GitHub ReleaseSummarizedView source
Supports targets that do not have atomic CAS on stable Rust.
0.3.15GitHub ReleaseSummarizedView source

Deprecations to plan for

Deprecated3
Soft-deprecates the ready! macro in favor of std::task::ready! added in Rust 1.64.
ready!std::task::ready!
0.3.32GitHub ReleaseSummarizedView source
Soft-deprecates the pin_mut! macro in favor of std::pin::pin! added in Rust 1.68.
pin_mut!std::pin::pin!
0.3.32GitHub ReleaseSummarizedView source
Deprecates FuturesOrdered::push in favor of FuturesOrdered::push_back.
FuturesOrdered::pushFuturesOrdered::push_back
0.3.22GitHub ReleaseSummarizedView source