diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 5476688197..148e474993 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -7572,6 +7572,34 @@ (define-public rust-bindgen-0.53
         ("rust-diff" ,rust-diff-0.1)
         ("rust-shlex" ,rust-shlex-0.1))))))
 
+(define-public rust-bindgen-0.37
+  (package
+    (inherit rust-bindgen-0.53)
+    (name "rust-bindgen")
+    (version "0.37.4")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "bindgen" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "08f2cyzr8fc027mzj2lhmn5j3w318g2ql7yfw5ngxa3yhy1an98v"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs (("rust-cexpr" ,rust-cexpr-0.2)
+                       ("rust-cfg-if" ,rust-cfg-if-0.1)
+                       ("rust-clang-sys" ,rust-clang-sys-0.23)
+                       ("rust-clap" ,rust-clap-2)
+                       ("rust-env-logger" ,rust-env-logger-0.5)
+                       ("rust-lazy-static" ,rust-lazy-static-1)
+                       ("rust-log" ,rust-log-0.4)
+                       ("rust-peeking-take-while" ,rust-peeking-take-while-0.1)
+                       ("rust-proc-macro2" ,rust-proc-macro2-0.3)
+                       ("rust-quote" ,rust-quote-0.5)
+                       ("rust-regex" ,rust-regex-1)
+                       ("rust-which" ,rust-which-1))))))
+
 (define-public rust-bio-types-1
   (package
     (name "rust-bio-types")
@@ -11923,6 +11951,23 @@ (define-public rust-cexpr-0.4
        #:cargo-development-inputs
        (("rust-clang-sys" ,rust-clang-sys-0.28))))))
 
+(define-public rust-cexpr-0.2
+  (package
+    (inherit rust-cexpr-0.6)
+    (name "rust-cexpr")
+    (version "0.2.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "cexpr" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0v1xa3758czmj8h97gh548mr8g0v13ixxvrlm1s79nb7jmgc9aj2"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs (("rust-nom" ,rust-nom-3))))))
+
 (define-public rust-cfg-aliases-0.1
   (package
     (name "rust-cfg-aliases")
@@ -12679,6 +12724,25 @@ (define-public rust-clang-sys-1
     (description "This package provides Rust bindings for libclang.")
     (license license:asl2.0)))
 
+(define-public rust-clang-sys-0.23
+  (package
+    (inherit rust-clang-sys-1)
+    (name "rust-clang-sys")
+    (version "0.23.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "clang-sys" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1hjr333izzhs6bic84qwnyzy5xzmvasib8f3zkzj4ln3a97c1xyp"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-glob" ,rust-glob-0.2)
+                       ("rust-glob" ,rust-glob-0.2)
+                       ("rust-libc" ,rust-libc-0.2)
+                       ("rust-libloading" ,rust-libloading-0.5))))))
+
 (define-public rust-claxon-0.4
   (package
     (name "rust-claxon")
@@ -25705,6 +25769,55 @@ (define-public rust-fast-float-0.2
     (description "This package provides a fast floating-point number parser.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-fasthash-0.4
+  (package
+    (name "rust-fasthash")
+    (version "0.4.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "fasthash" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "03v9g4ajw0zk9pv2ranq65xcly1b68hg0qzc2y8y1ajfdfa168h3"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs (("rust-cfg-if" ,rust-cfg-if-0.1)
+                       ("rust-fasthash-sys" ,rust-fasthash-sys-0.3)
+                       ("rust-num-traits" ,rust-num-traits-0.2)
+                       ("rust-seahash" ,rust-seahash-3)
+                       ("rust-xoroshiro128" ,rust-xoroshiro128-0.3))))
+    (home-page "https://github.com/flier/rust-fasthash")
+    (synopsis "suite of non-cryptographic hash functions for Rust.")
+    (description
+     "This package provides a suite of non-cryptographic hash functions for
+Rust.")
+    (license license:asl2.0)))
+
+(define-public rust-fasthash-sys-0.3
+  (package
+    (name "rust-fasthash-sys")
+    (version "0.3.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "fasthash-sys" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1y18v8yya5pnzgfji9lwnrz5jl7q8q2xj2a0sg6ibrz2pwd99pmn"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs (("rust-bindgen" ,rust-bindgen-0.37)
+                       ("rust-gcc" ,rust-gcc-0.3))))
+    (home-page "https://github.com/flier/rust-fasthash")
+    (synopsis "suite of non-cryptographic hash functions for Rust.")
+    (description
+     "This package provides a suite of non-cryptographic hash functions for
+Rust.")
+    (license license:asl2.0)))
+
 (define-public rust-faster-hex-0.9
   (package
     (name "rust-faster-hex")
@@ -73114,6 +73227,19 @@ (define-public rust-spin-0.9
 initializers are available.")
     (license license:expat)))
 
+(define-public rust-spin-0.7
+  (package
+    (inherit rust-spin-0.9)
+    (name "rust-spin")
+    (version "0.7.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "spin" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "0qjips9f6fsvkyd7wj3a4gzaqknn2q4kkb19957pl86im56pna0k"))))))
+
 (define-public rust-spin-0.5
   (package
     (inherit rust-spin-0.9)
@@ -74574,6 +74700,31 @@ (define-public rust-string-cache-shared-0.3
      "Code share between string_cache and string_cache_codegen.")
     (license (list license:asl2.0 license:expat))))
 
+(define-public rust-string-interner-0.12
+  (package
+    (name "rust-string-interner")
+    (version "0.12.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "string-interner" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "021whb6wrfq4mbdcdlrm6f01ncvh23yd2r08kxpyw5v5hz8rcc9q"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs (("rust-cfg-if" ,rust-cfg-if-1)
+                       ("rust-hashbrown" ,rust-hashbrown-0.9)
+                       ("rust-serde" ,rust-serde-1))))
+    (home-page "https://github.com/robbepop/string-interner")
+    (synopsis "Efficient string interner with minimal memory footprint
+and fast access to the underlying strings.")
+    (description
+     "This package provides Efficient string interner with minimal memory
+footprint and fast access to the underlying strings.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-stringprep-0.1
   (package
     (name "rust-stringprep")
@@ -86882,6 +87033,39 @@ (define-public rust-users-0.11
 Unix users and groups.")
     (license license:expat)))
 
+(define-public rust-ustr-0.9
+  (package
+    (name "rust-ustr")
+    (version "0.9.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "ustr" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "177sfj2gcxcxbyw756k4r7dbpsnkjrb62nrqvibdx019kw4kc51p"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-ahash" ,rust-ahash-0.7)
+                       ("rust-byteorder" ,rust-byteorder-1)
+                       ("rust-fasthash" ,rust-fasthash-0.4)
+                       ("rust-lazy-static" ,rust-lazy-static-1)
+                       ("rust-parking-lot" ,rust-parking-lot-0.11)
+                       ("rust-serde" ,rust-serde-1)
+                       ("rust-spin" ,rust-spin-0.7))
+       #:cargo-development-inputs (("rust-criterion" ,rust-criterion-0.3)
+                                   ("rust-crossbeam-channel" ,rust-crossbeam-channel-0.5)
+                                   ("rust-crossbeam-utils" ,rust-crossbeam-utils-0.8)
+                                   ("rust-libc" ,rust-libc-0.2)
+                                   ("rust-serde-json" ,rust-serde-json-1)
+                                   ("rust-string-interner" ,rust-string-interner-0.12)
+                                   ("rust-string-cache" ,rust-string-cache-0.8))))
+    (home-page "https://github.com/anderslanglands/ustr")
+    (synopsis "Fast, FFI-friendly string interning")
+    (description "This package provides Fast, FFI-friendly string interning.")
+    (license (license:non-copyleft
+              "https://spdx.org/licenses/BSD-2-Clause-Patent.html"))))
+
 (define-public rust-utf-8-0.7
   (package
     (name "rust-utf-8")
@@ -89870,6 +90054,23 @@ (define-public rust-which-2
        #:cargo-development-inputs
        (("rust-tempdir" ,rust-tempdir-0.3))))))
 
+(define-public rust-which-1
+  (package
+    (inherit rust-which-4)
+    (name "rust-which")
+    (version "1.0.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "which" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1cjwa57kzfgzs681a27m5pjmq580pv3hkcg23smf270bgqz60jp8"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs (("rust-libc" ,rust-libc-0.2))))))
+
 (define-public rust-whoami-1
   (package
     (name "rust-whoami")
@@ -90251,6 +90452,26 @@ (define-public rust-wyz-0.2
      "This package provides a collection of utility functions.")
     (license license:expat)))
 
+(define-public rust-xoroshiro128-0.3
+  (package
+    (name "rust-xoroshiro128")
+    (version "0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "xoroshiro128" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1kfzanis2v39r8q963q161izv0hmfsdxa11cxgqw8jgcp8sdmvp0"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs (("rust-rand" ,rust-rand-0.4))))
+    (home-page "https://github.com/mscharley/rust-xoroshiro128")
+    (synopsis "Fast psuedo-random number generators")
+    (description "This package provides Fast psuedo-random number generators.")
+    (license license:expat)))
+
 (define-public rust-x86-0.52
   (package
     (name "rust-x86")
