ripgrep: move minimum version to Rust stable

This also updates some code to make use of our more liberal versioning
requirement, including the use of crossbeam-channel instead of the MsQueue
from the older an unmaintained crossbeam 0.3. This does regrettably add
a sizable number of dependencies, however, compile times seem mostly
unaffected.

Closes #1019

1 files changed, 157 insertions, 4 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 7368d263..372887b2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -15,6 +15,14 @@ dependencies = [
 ]
 
 [[package]]
+name = "arrayvec"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "atty"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -75,8 +83,41 @@ dependencies = [
 ]
 
 [[package]]
-name = "crossbeam"
-version = "0.3.2"
+name = "cloudabi"
+version = "0.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "crossbeam-epoch 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -207,7 +248,7 @@ dependencies = [
 name = "ignore"
 version = "0.4.3"
 dependencies = [
- "crossbeam 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-channel 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "globset 0.4.1",
  "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -239,6 +280,15 @@ version = "0.2.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "lock_api"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "log"
 version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -264,6 +314,16 @@ dependencies = [
 ]
 
 [[package]]
+name = "memoffset"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "nodrop"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "num_cpus"
 version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -272,6 +332,34 @@ dependencies = [
 ]
 
 [[package]]
+name = "owning_ref"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lock_api 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "pcre2"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -325,6 +413,23 @@ dependencies = [
 ]
 
 [[package]]
+name = "rand"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "redox_syscall"
 version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -405,6 +510,11 @@ dependencies = [
 ]
 
 [[package]]
+name = "scopeguard"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "serde"
 version = "1.0.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -435,6 +545,19 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "smallvec"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "stable_deref_trait"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "strsim"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -508,6 +631,14 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "unreachable"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "utf8-ranges"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -518,6 +649,11 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "void"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "walkdir"
 version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -556,6 +692,7 @@ dependencies = [
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@@ -564,7 +701,10 @@ dependencies = [
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