The authors of the dependency Rust crates:

autocfg (version 1.1.0):
  Josh Stone

bitflags (version 1.3.2):
  The Rust Project Developers

cfg-if (version 1.0.0):
  Alex Crichton

crossbeam-channel (version 0.5.6):
  

crossbeam-deque (version 0.8.2):
  

crossbeam-epoch (version 0.9.13):
  

crossbeam-utils (version 0.8.14):
  

dashmap (version 5.5.1):
  Acrimon

either (version 1.8.0):
  bluss

extendr-api (version 0.3.1):
  andy-thomason
  Thomas Down
  Mossa Merhi Reimert
  Claus O. Wilke
  Hiroaki Yutani
  Ilia A. Kosenkov

extendr-engine (version 0.3.1):
  andy-thomason
  Thomas Down
  Mossa Merhi Reimert
  Claus O. Wilke
  Hiroaki Yutani
  Ilia A. Kosenkov

extendr-macros (version 0.3.1):
  andy-thomason
  Thomas Down
  Mossa Merhi Reimert
  Claus O. Wilke
  Hiroaki Yutani
  Ilia A. Kosenkov

getrandom (version 0.2.8):
  The Rand Project Developers

hashbrown (version 0.14.0):
  Amanieu d'Antras

hermit-abi (version 0.2.6):
  Stefan Lankes

itertools (version 0.10.5):
  bluss

lazy_static (version 1.4.0):
  Marvin Löbel

libc (version 0.2.139):
  The Rust Project Developers

libm (version 0.2.6):
  Jorge Aparicio

libR-sys (version 0.3.0):
  andy-thomason
  Thomas Down
  Mossa Merhi Reimert
  Claus O. Wilke
  Ilia Kosenkov
  Hiroaki Yutani

lock_api (version 0.4.10):
  Amanieu d'Antras

matrixmultiply (version 0.3.2):
  bluss
  R. Janis Goldschmidt

memoffset (version 0.7.1):
  Gilad Naaman

ndarray-rand (version 0.14.0):
  bluss

ndarray (version 0.15.6):
  Ulrik Sverdrup \"bluss\"
  Jim Turner

nohash-hasher (version 0.2.0):
  Parity Technologies

num_cpus (version 1.15.0):
  Sean McArthur

num-complex (version 0.4.3):
  The Rust Project Developers

num-integer (version 0.1.45):
  The Rust Project Developers

num-traits (version 0.2.15):
  The Rust Project Developers

once_cell (version 1.18.0):
  Aleksey Kladov

ordered-float (version 3.4.0):
  Jonathan Reem
  Matt Brubeck

parking_lot_core (version 0.9.8):
  Amanieu d'Antras

paste (version 1.0.11):
  David Tolnay

ppv-lite86 (version 0.2.17):
  The CryptoCorrosion Contributors

proc-macro2 (version 1.0.50):
  David Tolnay
  Alex Crichton

quote (version 1.0.23):
  David Tolnay

rand_chacha (version 0.3.1):
  The Rand Project Developers
  The Rust Project Developers
  The CryptoCorrosion Contributors

rand_core (version 0.6.4):
  The Rand Project Developers
  The Rust Project Developers

rand_distr (version 0.4.3):
  The Rand Project Developers

rand (version 0.8.5):
  The Rand Project Developers
  The Rust Project Developers

rawpointer (version 0.2.1):
  bluss

rayon-core (version 1.10.1):
  Niko Matsakis
  Josh Stone

rayon (version 1.6.1):
  Niko Matsakis
  Josh Stone

redox_syscall (version 0.3.5):
  Jeremy Soller

rustc-hash (version 1.1.0):
  The Rust Project Developers

scopeguard (version 1.1.0):
  bluss

smallvec (version 1.10.0):
  The Servo Project Developers

syn (version 1.0.107):
  David Tolnay

unicode-ident (version 1.0.6):
  David Tolnay

wasi (version 0.11.0+wasi-snapshot-preview1):
  The Cranelift Project Developers

winapi-i686-pc-windows-gnu (version 0.4.0):
  Peter Atashian

winapi-x86_64-pc-windows-gnu (version 0.4.0):
  Peter Atashian

winapi (version 0.3.9):
  Peter Atashian

windows_aarch64_gnullvm (version 0.48.5):
  Microsoft

windows_aarch64_msvc (version 0.48.5):
  Microsoft

windows_i686_gnu (version 0.48.5):
  Microsoft

windows_i686_msvc (version 0.48.5):
  Microsoft

windows_x86_64_gnu (version 0.48.5):
  Microsoft

windows_x86_64_gnullvm (version 0.48.5):
  Microsoft

windows_x86_64_msvc (version 0.48.5):
  Microsoft

windows-targets (version 0.48.5):
  Microsoft