diff --git a/Cargo.lock b/Cargo.lock
index 7c53cc712..0decf3183 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -32,6 +32,15 @@ dependencies = [
  "opaque-debug",
 ]
 
+[[package]]
+name = "ansi_term"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "arrayref"
 version = "0.3.5"
@@ -53,6 +62,12 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b671c8fb71b457dd4ae18c4ba1e59aa81793daacc361d82fcd410cef0d491875"
 
+[[package]]
+name = "autocfg"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
+
 [[package]]
 name = "bellman"
 version = "0.6.0"
@@ -164,9 +179,20 @@ dependencies = [
 
 [[package]]
 name = "cfg-if"
-version = "0.1.9"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
+[[package]]
+name = "chrono"
+version = "0.4.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
+checksum = "c74d84029116787153e02106bf53e66828452a4b325cc8652b788b5967c0a0b6"
+dependencies = [
+ "num-integer",
+ "num-traits",
+ "time",
+]
 
 [[package]]
 name = "constant_time_eq"
@@ -181,11 +207,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2d818a4990769aac0c7ff1360e233ef3a41adcb009ebb2036bf6915eb0f6b23c"
 dependencies = [
  "cfg-if",
- "crossbeam-channel",
+ "crossbeam-channel 0.3.9",
  "crossbeam-deque",
  "crossbeam-epoch",
  "crossbeam-queue",
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
 ]
 
 [[package]]
@@ -194,7 +220,17 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c8ec7fcd21571dc78f96cc96243cab8d8f035247c3efd16c687be154c3fa9efa"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
+]
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ee0cc8804d5393478d743b035099520087a5186f3b93fa58cec08fa62407b6"
+dependencies = [
+ "cfg-if",
+ "crossbeam-utils 0.7.2",
 ]
 
 [[package]]
@@ -204,7 +240,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b18cd2e169ad86297e6bc0ad9aa679aee9daa4f19e8163860faf7c164e4f5a71"
 dependencies = [
  "crossbeam-epoch",
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
 ]
 
 [[package]]
@@ -215,7 +251,7 @@ checksum = "fedcd6772e37f3da2a9af9bf12ebe046c0dfe657992377b4df982a2b54cd37a9"
 dependencies = [
  "arrayvec",
  "cfg-if",
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
  "lazy_static",
  "memoffset",
  "scopeguard",
@@ -227,7 +263,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c979cd6cfe72335896575c6b5688da489e420d36a27a0b9eb0c73db574b4a4b"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
 ]
 
 [[package]]
@@ -240,6 +276,17 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "crossbeam-utils"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8"
+dependencies = [
+ "autocfg 1.0.0",
+ "cfg-if",
+ "lazy_static",
+]
+
 [[package]]
 name = "crunchy"
 version = "0.1.6"
@@ -418,9 +465,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.62"
+version = "0.2.72"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34fcd2c08d2f832f376f4173a231990fa5aef4e99fb569867318a227ef4c06ba"
+checksum = "a9f8082297d534141b30c8d39e9b1773713ab50fdbe4ff30f750d063b3bfd701"
 
 [[package]]
 name = "librustzcash"
@@ -435,6 +482,9 @@ dependencies = [
  "libc",
  "pairing",
  "rand_core",
+ "tracing",
+ "tracing-appender",
+ "tracing-subscriber",
  "zcash_history",
  "zcash_primitives",
  "zcash_proofs",
@@ -470,7 +520,7 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f9c3f34cdd24f334cb265d9bf8bfa8a241920d026916785747a92f0e55541a1a"
 dependencies = [
- "autocfg",
+ "autocfg 0.1.6",
  "num-integer",
  "num-traits",
 ]
@@ -481,7 +531,7 @@ version = "0.1.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b85e541ef8255f6cf42bbfe4ef361305c6c135d10919ecc26126c4e5ae94bc09"
 dependencies = [
- "autocfg",
+ "autocfg 0.1.6",
  "num-traits",
 ]
 
@@ -491,7 +541,7 @@ version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6ba9a427cfca2be13aa6f6403b0b7e7368fe982bfa16fccc450ce74c46cd9b32"
 dependencies = [
- "autocfg",
+ "autocfg 0.1.6",
 ]
 
 [[package]]
@@ -657,6 +707,15 @@ dependencies = [
  "opaque-debug",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06d5a3f5166fb5b42a5439f2eee8b9de149e235961e3eb21c5808fc3ea17ff3e"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "subtle"
 version = "2.2.3"
@@ -694,6 +753,70 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "time"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "tracing"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0aae59226cf195d8e74d4b34beae1859257efb4e5fed3f147d2dc2c7d372178"
+dependencies = [
+ "cfg-if",
+ "tracing-attributes",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-appender"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7aa52d56cc0d79ab604e8a022a1cebc4de33cf09dc9933c94353bea2e00d6e88"
+dependencies = [
+ "chrono",
+ "crossbeam-channel 0.4.3",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "tracing-attributes"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0693bf8d6f2bf22c690fc61a9d21ac69efdbb894a17ed596b9af0f01e64b84b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2734b5a028fa697686f16c6d18c2c6a3c7e41513f9a213abb6754c4acb3c8d7"
+dependencies = [
+ "lazy_static",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.2.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7b33f8b2ef2ab0c3778c12646d9c42a24f7772bee4cdafc72199644a9f58fdc"
+dependencies = [
+ "ansi_term",
+ "chrono",
+ "sharded-slab",
+ "tracing-core",
+]
+
 [[package]]
 name = "typenum"
 version = "1.11.2"
diff --git a/Cargo.toml b/Cargo.toml
index 16b8615c9..90de31668 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,11 +28,18 @@ libc = "0.2"
 pairing = "0.16"
 lazy_static = "1"
 rand_core = "0.5.1"
+tracing = "0.1"
+tracing-appender = "0.1"
 zcash_history = "0.2"
 zcash_primitives = "0.2"
 zcash_proofs = "0.2"
 ed25519-zebra = "2.0.0"
 
+[dependencies.tracing-subscriber]
+version = "0.2"
+default-features = false
+features = ["ansi", "chrono"]
+
 [profile.release]
 lto = true
 panic = 'abort'
diff --git a/depends/packages/crate_ansi_term.mk b/depends/packages/crate_ansi_term.mk
new file mode 100644
index 000000000..9b7f48e55
--- /dev/null
+++ b/depends/packages/crate_ansi_term.mk
@@ -0,0 +1,15 @@
+package=crate_ansi_term
+$(package)_crate_name=ansi_term
+$(package)_version=0.12.1
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2
+$(package)_crate_versioned_name=$($(package)_crate_name)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_autocfg.mk b/depends/packages/crate_autocfg.mk
index 1b36846ed..9e9adf7fa 100644
--- a/depends/packages/crate_autocfg.mk
+++ b/depends/packages/crate_autocfg.mk
@@ -1,9 +1,9 @@
 package=crate_autocfg
 $(package)_crate_name=autocfg
-$(package)_version=0.1.6
+$(package)_version=1.0.0
 $(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
 $(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
-$(package)_sha256_hash=b671c8fb71b457dd4ae18c4ba1e59aa81793daacc361d82fcd410cef0d491875
+$(package)_sha256_hash=f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d
 $(package)_crate_versioned_name=$($(package)_crate_name)
 
 define $(package)_preprocess_cmds
diff --git a/depends/packages/crate_autocfg_0.1.mk b/depends/packages/crate_autocfg_0.1.mk
new file mode 100644
index 000000000..21468f57e
--- /dev/null
+++ b/depends/packages/crate_autocfg_0.1.mk
@@ -0,0 +1,15 @@
+package=crate_autocfg
+$(package)_crate_name=autocfg
+$(package)_version=0.1.6
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=b671c8fb71b457dd4ae18c4ba1e59aa81793daacc361d82fcd410cef0d491875
+$(package)_crate_versioned_name=$($(package)_crate_name)-$($(package)_version)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_cfg_if.mk b/depends/packages/crate_cfg_if.mk
index af67660f9..895a979ee 100644
--- a/depends/packages/crate_cfg_if.mk
+++ b/depends/packages/crate_cfg_if.mk
@@ -1,9 +1,9 @@
 package=crate_cfg_if
 $(package)_crate_name=cfg-if
-$(package)_version=0.1.9
+$(package)_version=0.1.10
 $(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
 $(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
-$(package)_sha256_hash=b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33
+$(package)_sha256_hash=4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822
 $(package)_crate_versioned_name=$($(package)_crate_name)
 
 define $(package)_preprocess_cmds
diff --git a/depends/packages/crate_chrono.mk b/depends/packages/crate_chrono.mk
new file mode 100644
index 000000000..2437f11b3
--- /dev/null
+++ b/depends/packages/crate_chrono.mk
@@ -0,0 +1,15 @@
+package=crate_chrono
+$(package)_crate_name=chrono
+$(package)_version=0.4.13
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=c74d84029116787153e02106bf53e66828452a4b325cc8652b788b5967c0a0b6
+$(package)_crate_versioned_name=$($(package)_crate_name)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_crossbeam_channel.mk b/depends/packages/crate_crossbeam_channel.mk
index 618268f41..06184ba25 100644
--- a/depends/packages/crate_crossbeam_channel.mk
+++ b/depends/packages/crate_crossbeam_channel.mk
@@ -1,9 +1,9 @@
 package=crate_crossbeam_channel
 $(package)_crate_name=crossbeam-channel
-$(package)_version=0.3.9
+$(package)_version=0.4.3
 $(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
 $(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
-$(package)_sha256_hash=c8ec7fcd21571dc78f96cc96243cab8d8f035247c3efd16c687be154c3fa9efa
+$(package)_sha256_hash=09ee0cc8804d5393478d743b035099520087a5186f3b93fa58cec08fa62407b6
 $(package)_crate_versioned_name=$($(package)_crate_name)
 
 define $(package)_preprocess_cmds
diff --git a/depends/packages/crate_crossbeam_channel_0.3.mk b/depends/packages/crate_crossbeam_channel_0.3.mk
new file mode 100644
index 000000000..125425027
--- /dev/null
+++ b/depends/packages/crate_crossbeam_channel_0.3.mk
@@ -0,0 +1,15 @@
+package=crate_crossbeam_channel
+$(package)_crate_name=crossbeam-channel
+$(package)_version=0.3.9
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=c8ec7fcd21571dc78f96cc96243cab8d8f035247c3efd16c687be154c3fa9efa
+$(package)_crate_versioned_name=$($(package)_crate_name)-$($(package)_version)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_crossbeam_utils.mk b/depends/packages/crate_crossbeam_utils.mk
index eabfa26c4..5aa4efdf4 100644
--- a/depends/packages/crate_crossbeam_utils.mk
+++ b/depends/packages/crate_crossbeam_utils.mk
@@ -1,9 +1,9 @@
 package=crate_crossbeam_utils
 $(package)_crate_name=crossbeam-utils
-$(package)_version=0.6.6
+$(package)_version=0.7.2
 $(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
 $(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
-$(package)_sha256_hash=04973fa96e96579258a5091af6003abde64af786b860f18622b82e026cca60e6
+$(package)_sha256_hash=c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8
 $(package)_crate_versioned_name=$($(package)_crate_name)
 
 define $(package)_preprocess_cmds
diff --git a/depends/packages/crate_crossbeam_utils_0.6.mk b/depends/packages/crate_crossbeam_utils_0.6.mk
new file mode 100644
index 000000000..3e8365856
--- /dev/null
+++ b/depends/packages/crate_crossbeam_utils_0.6.mk
@@ -0,0 +1,15 @@
+package=crate_crossbeam_utils
+$(package)_crate_name=crossbeam-utils
+$(package)_version=0.6.6
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=04973fa96e96579258a5091af6003abde64af786b860f18622b82e026cca60e6
+$(package)_crate_versioned_name=$($(package)_crate_name)-$($(package)_version)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_libc.mk b/depends/packages/crate_libc.mk
index a8752b964..774e8ce00 100644
--- a/depends/packages/crate_libc.mk
+++ b/depends/packages/crate_libc.mk
@@ -1,9 +1,9 @@
 package=crate_libc
 $(package)_crate_name=libc
-$(package)_version=0.2.62
+$(package)_version=0.2.72
 $(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
 $(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
-$(package)_sha256_hash=34fcd2c08d2f832f376f4173a231990fa5aef4e99fb569867318a227ef4c06ba
+$(package)_sha256_hash=a9f8082297d534141b30c8d39e9b1773713ab50fdbe4ff30f750d063b3bfd701
 $(package)_crate_versioned_name=$($(package)_crate_name)
 
 define $(package)_preprocess_cmds
diff --git a/depends/packages/crate_sharded_slab.mk b/depends/packages/crate_sharded_slab.mk
new file mode 100644
index 000000000..65f1aaf4a
--- /dev/null
+++ b/depends/packages/crate_sharded_slab.mk
@@ -0,0 +1,15 @@
+package=crate_sharded_slab
+$(package)_crate_name=sharded-slab
+$(package)_version=0.0.9
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=06d5a3f5166fb5b42a5439f2eee8b9de149e235961e3eb21c5808fc3ea17ff3e
+$(package)_crate_versioned_name=$($(package)_crate_name)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_time.mk b/depends/packages/crate_time.mk
new file mode 100644
index 000000000..e003d68ab
--- /dev/null
+++ b/depends/packages/crate_time.mk
@@ -0,0 +1,15 @@
+package=crate_time
+$(package)_crate_name=time
+$(package)_version=0.1.43
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438
+$(package)_crate_versioned_name=$($(package)_crate_name)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_tracing.mk b/depends/packages/crate_tracing.mk
new file mode 100644
index 000000000..efe15f9a7
--- /dev/null
+++ b/depends/packages/crate_tracing.mk
@@ -0,0 +1,15 @@
+package=crate_tracing
+$(package)_crate_name=tracing
+$(package)_version=0.1.18
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=f0aae59226cf195d8e74d4b34beae1859257efb4e5fed3f147d2dc2c7d372178
+$(package)_crate_versioned_name=$($(package)_crate_name)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_tracing_appender.mk b/depends/packages/crate_tracing_appender.mk
new file mode 100644
index 000000000..90d60aad6
--- /dev/null
+++ b/depends/packages/crate_tracing_appender.mk
@@ -0,0 +1,15 @@
+package=crate_tracing_appender
+$(package)_crate_name=tracing-appender
+$(package)_version=0.1.1
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=7aa52d56cc0d79ab604e8a022a1cebc4de33cf09dc9933c94353bea2e00d6e88
+$(package)_crate_versioned_name=$($(package)_crate_name)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_tracing_attributes.mk b/depends/packages/crate_tracing_attributes.mk
new file mode 100644
index 000000000..1f18e81ba
--- /dev/null
+++ b/depends/packages/crate_tracing_attributes.mk
@@ -0,0 +1,15 @@
+package=crate_tracing_attributes
+$(package)_crate_name=tracing-attributes
+$(package)_version=0.1.9
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=f0693bf8d6f2bf22c690fc61a9d21ac69efdbb894a17ed596b9af0f01e64b84b
+$(package)_crate_versioned_name=$($(package)_crate_name)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_tracing_core.mk b/depends/packages/crate_tracing_core.mk
new file mode 100644
index 000000000..96d1d03cf
--- /dev/null
+++ b/depends/packages/crate_tracing_core.mk
@@ -0,0 +1,15 @@
+package=crate_tracing_core
+$(package)_crate_name=tracing-core
+$(package)_version=0.1.12
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=b2734b5a028fa697686f16c6d18c2c6a3c7e41513f9a213abb6754c4acb3c8d7
+$(package)_crate_versioned_name=$($(package)_crate_name)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/crate_tracing_subscriber.mk b/depends/packages/crate_tracing_subscriber.mk
new file mode 100644
index 000000000..ac68653a2
--- /dev/null
+++ b/depends/packages/crate_tracing_subscriber.mk
@@ -0,0 +1,15 @@
+package=crate_tracing_subscriber
+$(package)_crate_name=tracing-subscriber
+$(package)_version=0.2.10
+$(package)_download_path=https://static.crates.io/crates/$($(package)_crate_name)
+$(package)_file_name=$($(package)_crate_name)-$($(package)_version).crate
+$(package)_sha256_hash=f7b33f8b2ef2ab0c3778c12646d9c42a24f7772bee4cdafc72199644a9f58fdc
+$(package)_crate_versioned_name=$($(package)_crate_name)
+
+define $(package)_preprocess_cmds
+  $(call generate_crate_checksum,$(package))
+endef
+
+define $(package)_stage_cmds
+  $(call vendor_crate_source,$(package))
+endef
diff --git a/depends/packages/packages.mk b/depends/packages/packages.mk
index 9e43d2de0..9357d0af6 100644
--- a/depends/packages/packages.mk
+++ b/depends/packages/packages.mk
@@ -2,8 +2,10 @@ rust_crates := \
   crate_aes \
   crate_aesni \
   crate_aes_soft \
+  crate_ansi_term \
   crate_arrayref \
   crate_arrayvec \
+  crate_autocfg_0.1 \
   crate_autocfg \
   crate_bellman \
   crate_bigint \
@@ -17,11 +19,14 @@ rust_crates := \
   crate_byteorder \
   crate_c2_chacha \
   crate_cfg_if \
+  crate_chrono \
   crate_constant_time_eq \
+  crate_crossbeam_channel_0.3 \
   crate_crossbeam_channel \
   crate_crossbeam_deque \
   crate_crossbeam_epoch \
   crate_crossbeam_queue \
+  crate_crossbeam_utils_0.6 \
   crate_crossbeam_utils \
   crate_crossbeam \
   crate_crunchy \
@@ -68,10 +73,17 @@ rust_crates := \
   crate_serde \
   crate_serde_derive \
   crate_sha2 \
+  crate_sharded_slab \
   crate_subtle \
   crate_syn \
+  crate_time \
   crate_thiserror \
   crate_thiserror_impl \
+  crate_tracing_appender \
+  crate_tracing_attributes \
+  crate_tracing_core \
+  crate_tracing_subscriber \
+  crate_tracing \
   crate_typenum \
   crate_unicode_xid \
   crate_wasi \