diff --git a/Cargo.lock b/Cargo.lock
index 1284b198..494dc11a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -551,9 +551,6 @@ dependencies = [
 name = "lazy_static"
 version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "libc"
@@ -1069,11 +1066,6 @@ dependencies = [
  "maybe-uninit 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "spin"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "stable_deref_trait"
 version = "1.1.1"
@@ -1255,7 +1247,7 @@ dependencies = [
  "tokio 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-layer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "tracing 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1350,19 +1342,18 @@ dependencies = [
 
 [[package]]
 name = "tracing"
-version = "0.1.10"
+version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "tracing-attributes 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "tracing-core 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing-attributes 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing-core 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "tracing-attributes"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1371,11 +1362,10 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.7"
+version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1384,7 +1374,7 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "pin-project 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "tracing 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1394,7 +1384,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "tracing-core 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing-core 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1409,7 +1399,7 @@ dependencies = [
  "owning_ref 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "tracing-core 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing-core 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tracing-log 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1555,7 +1545,7 @@ dependencies = [
  "tokio-util 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower 0.3.0 (git+https://github.com/tower-rs/tower)",
  "tower-load 0.3.0 (git+https://github.com/tower-rs/tower)",
- "tracing 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tracing-futures 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "zebra-chain 0.1.0",
 ]
@@ -1588,7 +1578,7 @@ dependencies = [
  "tokio 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower 0.3.0 (git+https://github.com/tower-rs/tower)",
- "tracing 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tracing 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "tracing-futures 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tracing-log 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tracing-subscriber 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1728,7 +1718,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum signal-hook-registry 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94f478ede9f64724c5d173d7bb56099ec3e2d9fc2774aac65d34b8b890405f41"
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 "checksum smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "f7b0758c52e15a8b5e3691eae6cc559f08eee9406e548a4477ba4e67770a82b6"
-"checksum spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 "checksum subtle 2.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7c65d530b10ccaeac294f349038a597e435b18fb456aadd0840a623f83b9e941"
@@ -1756,9 +1745,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e987b6bf443f4b5b3b6f38704195592cca41c5bb7aedd3c3693c7081f8289860"
 "checksum tower-timeout 0.3.0 (git+https://github.com/tower-rs/tower)" = "<none>"
 "checksum tower-util 0.3.0 (git+https://github.com/tower-rs/tower)" = "<none>"
-"checksum tracing 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ff4e4f59e752cb3beb5b61c6d5e11191c7946231ba84faec2902c9efdd8691c5"
-"checksum tracing-attributes 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "a4263b12c3d3c403274493eb805966093b53214124796552d674ca1dd5d27c2b"
-"checksum tracing-core 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "bc913647c520c959b6d21e35ed8fa6984971deca9f0a2fcb8c51207e0c56af1d"
+"checksum tracing 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "6de6a8590a29d3f401eab60470c699efa0adf7b4f0352055bf24df2b69849b40"
+"checksum tracing-attributes 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "04cfd395def5a60236e187e1ff905cb55668a59f29928dec05e6e1b1fd2ac1f3"
+"checksum tracing-core 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "d7fb511ac6ca1d031c5cfc26d8c38da9d88e91d2bd5b38b60cf8dc1b8b5c211f"
 "checksum tracing-futures 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "107ae59580d2a1d994b6b965b16fe94c969fe86d3f7fd2572a1ee243bcaf7f09"
 "checksum tracing-log 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5e0f8c7178e13481ff6765bd169b33e8d554c5d2bbede5e32c356194be02b9b9"
 "checksum tracing-subscriber 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "192ca16595cdd0661ce319e8eede9c975f227cdaabc4faaefdc256f43d852e45"