diff --git a/src/Cargo.lock b/src/Cargo.lock
index 7c69601c68d..14cc1d4ec49 100644
--- a/src/Cargo.lock
+++ b/src/Cargo.lock
@@ -185,7 +185,7 @@ dependencies = [
  "env_logger 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "filetime 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "flate2 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs2 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "git2 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "git2-curl 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -246,7 +246,7 @@ version = "0.1.0"
 dependencies = [
  "cargo 0.25.0",
  "filetime 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "flate2 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "git2 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "hamcrest 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -686,6 +686,15 @@ dependencies = [
  "miniz-sys 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "flate2"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miniz-sys 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "fmt_macros"
 version = "0.0.0"
@@ -2829,6 +2838,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum failure_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c7cdda555bb90c9bb67a3b670a0f42de8e73f5981524123ad8578aafec8ddb8b"
 "checksum filetime 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "aa75ec8f7927063335a9583e7fa87b0110bb888cf766dc01b54c0ff70d760c8e"
 "checksum flate2 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)" = "e6234dd4468ae5d1e2dbb06fe2b058696fdc50a339c68a393aefbf00bc81e423"
+"checksum flate2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9fac2277e84e5e858483756647a9d0aa8d9a2b7cba517fd84325a0aaa69a0909"
 "checksum fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
 "checksum foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
 "checksum foreign-types-shared 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
diff --git a/src/tools/cargo b/src/tools/cargo
index e08f310188c..a88fbace48a 160000
--- a/src/tools/cargo
+++ b/src/tools/cargo
@@ -1 +1 @@
-Subproject commit e08f310188cc0d101550c21b3d88877cfba7e5e1
+Subproject commit a88fbace48ac42ab21e1d8609012480d0aeab982