https://github.com/BurntSushi/ripgrep/commit/968491f8e93e

--- Cargo.toml.orig	2018-09-07 18:07:52 UTC
+++ Cargo.toml
@@ -72,7 +72,6 @@ serde = "1.0.77"
 serde_derive = "1.0.77"
 
 [features]
-avx-accel = ["grep/avx-accel"]
 simd-accel = ["grep/simd-accel"]
 pcre2 = ["grep/pcre2"]
 
--- grep-searcher/Cargo.toml.orig	2018-09-07 18:07:52 UTC
+++ grep-searcher/Cargo.toml
@@ -13,7 +13,7 @@ keywords = ["regex", "grep", "egrep", "search", "patte
 license = "Unlicense/MIT"
 
 [dependencies]
-bytecount = "0.3.2"
+bytecount = "0.5"
 encoding_rs = "0.8.6"
 encoding_rs_io = "0.1.2"
 grep-matcher = { version = "0.1.1", path = "../grep-matcher" }
@@ -26,10 +26,8 @@ grep-regex = { version = "0.1.1", path = "../grep-rege
 regex = "1.0.5"
 
 [features]
-avx-accel = [
-  "bytecount/avx-accel",
-]
-simd-accel = [
-  "bytecount/simd-accel",
-  "encoding_rs/simd-accel",
-]
+default = ["bytecount/runtime-dispatch-simd"]
+simd-accel = ["encoding_rs/simd-accel"]
+
+# This feature is DEPRECATED. Runtime dispatch is used for SIMD now.
+avx-accel = []
--- grep/Cargo.toml.orig	2018-09-07 18:07:52 UTC
+++ grep/Cargo.toml
@@ -32,6 +32,8 @@ default-features = false
 features = ["suggestions"]
 
 [features]
-avx-accel = ["grep-searcher/avx-accel"]
 simd-accel = ["grep-searcher/simd-accel"]
 pcre2 = ["grep-pcre2"]
+
+# This feature is DEPRECATED. Runtime dispatch is used for SIMD now.
+avx-accel = []