--- a/browser/config/tooltool-manifests/linux32/releng.manifest
+++ b/browser/config/tooltool-manifests/linux32/releng.manifest
@@ -3,16 +3,16 @@
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     "algorithm": "sha512",
     "filename": "gtk3.tar.xz",
     "setup": "setup.sh",
     "unpack": true
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+    "version": "rustc 1.20.0-beta.2 (54279dfac 2017-08-13) repack",
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+    "digest": "a01d0c40e929e246d59be008422c43c8752746b3ae03ed3c504a3a3908ba5ad4e89f92bbc193edd533acf3a71ad667d591d30fb784f974c532d0e171ae962a92",
     "algorithm": "sha512",
     "filename": "rustc.tar.xz",
     "unpack": true
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 ]

--- a/browser/config/tooltool-manifests/linux64/hazard.manifest
+++ b/browser/config/tooltool-manifests/linux64/hazard.manifest
@@ -11,16 +11,16 @@
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+    "version": "rustc 1.20.0-beta.2 (54279dfac 2017-08-13) repack",
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     "algorithm": "sha512",
     "filename": "rustc.tar.xz",
     "unpack": true
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 ]

--- a/browser/config/tooltool-manifests/linux64/releng.manifest
+++ b/browser/config/tooltool-manifests/linux64/releng.manifest
@@ -3,16 +3,16 @@
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+    "version": "rustc 1.20.0-beta.2 (54279dfac 2017-08-13) repack",
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+    "digest": "a01d0c40e929e246d59be008422c43c8752746b3ae03ed3c504a3a3908ba5ad4e89f92bbc193edd533acf3a71ad667d591d30fb784f974c532d0e171ae962a92",
     "algorithm": "sha512",
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 ]

--- a/browser/config/tooltool-manifests/macosx64/clang.manifest
+++ b/browser/config/tooltool-manifests/macosx64/clang.manifest
@@ -3,19 +3,19 @@
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+    "version": "rustc 1.20.0-beta.2 (54279dfac 2017-08-13) repack",
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+    "digest": "9e37fcfa86a0970db301fd9f0a8fa98b2c9f780f1ccc93db6ac0a231a322186444a3d0bbd7964097032bed3b2584449c15a3aa9507be5ebb66c5e292c8708eac",
     "algorithm": "sha512",
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     "visibility": "public",

--- a/browser/config/tooltool-manifests/macosx64/cross-releng.manifest
+++ b/browser/config/tooltool-manifests/macosx64/cross-releng.manifest
@@ -3,16 +3,16 @@
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+    "version": "rustc 1.20.0-beta.2 (54279dfac 2017-08-13) repack",
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+    "digest": "ccbaf0d980063fba0d0f20a6fe9a321b0d45c36bf12b1830d525c0a5d571028f61b766c39555dc3edd09b56c81261bc8369742543b3aca92fe410d31f972e8f3",
     "algorithm": "sha512",
     "filename": "rustc.tar.xz",
     "unpack": true
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 ]

--- a/browser/config/tooltool-manifests/macosx64/releng.manifest
+++ b/browser/config/tooltool-manifests/macosx64/releng.manifest
@@ -3,19 +3,19 @@
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+    "version": "rustc 1.20.0-beta.2 (54279dfac 2017-08-13) repack",
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+    "digest": "9e37fcfa86a0970db301fd9f0a8fa98b2c9f780f1ccc93db6ac0a231a322186444a3d0bbd7964097032bed3b2584449c15a3aa9507be5ebb66c5e292c8708eac",
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--- a/browser/config/tooltool-manifests/win32/releng.manifest
+++ b/browser/config/tooltool-manifests/win32/releng.manifest
@@ -1,19 +1,19 @@
 [
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+    "version": "rustc 1.20.0-beta.2 (54279dfac 2017-08-13) repack",
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--- a/browser/config/tooltool-manifests/win64/releng.manifest
+++ b/browser/config/tooltool-manifests/win64/releng.manifest
@@ -1,19 +1,19 @@
 [
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+    "version": "rustc 1.20.0-beta.2 (54279dfac 2017-08-13) repack",
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--- a/mobile/android/config/tooltool-manifests/android-x86/releng.manifest
+++ b/mobile/android/config/tooltool-manifests/android-x86/releng.manifest
@@ -19,19 +19,19 @@
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+    "version": "rustc 1.20.0-beta.2 (54279dfac 2017-08-13) repack",
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--- a/mobile/android/config/tooltool-manifests/android/releng.manifest
+++ b/mobile/android/config/tooltool-manifests/android/releng.manifest
@@ -52,19 +52,19 @@
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