crossbeam-utils 0.8.22

• Make AtomicCell::{as_ptr,into_inner} const. (#1237)
• Make CachePadded repr(C). (#1270)
• Optimize WaitGroup. (#1195)

crossbeam-queue 0.3.13

• Add push_mut and pop_mut to ArrayQueue and SegQueue. (#1191)

crossbeam-epoch 0.9.20

• Fix invalid pointer dereference in fmt::Pointer impl for Atomic/Shared when the underlying pointer is invalid. This fixes unsoundness that was not fully addressed in 0.9.19's fix. (#1276)

crossbeam-epoch 0.9.19

• Fix null pointer dereference in fmt::Pointer impl for Atomic/Shared when it is a null pointer. (#1273)
• Fix return value of Atomic::fetch_update. (#1197)
• Improve compatibility with ThreadSanitizer. (#998)
• Allow unsized types in Guard::defer_destroy. (#1201)
• Use 64-bit integer for epoch representation on 32-bit platforms if AtomicU64 is available. (#1230)

crossbeam-deque 0.8.7

• Optimize Worker::push, Stealer::steal_batch*, Injector::steal_batch*. (#1233)

crossbeam-channel 0.5.16

• Improve support for rust-analyzer auto-completion of code inside select!/select_biased! macro. (#1240)
• Make never const. (#1250)

crossbeam-channel 0.5.15

• Fix regression introduced in 0.5.12 that can lead to a double free when dropping unbounded channel. (#1187)

crossbeam-utils 0.8.21

• Improve implementation of CachePadded. (#1152)

crossbeam-queue 0.3.12

• Fix stack overflow when pushing large value to SegQueue. (#1146, #1147, #1159)

crossbeam-deque 0.8.6

• Fix stack overflow when pushing large value to Injector. (#1146, #1147, #1159)