deleted file mode 100644
--- a/browser/config/tooltool-manifests/linux64/asan.manifest
+++ /dev/null
@@ -1,18 +0,0 @@
-[
-  {
-    "version": "rustc 1.19.0 (0ade33941 2017-07-17) repack",
-    "size": 161014632,
-    "digest": "65bebcf94fc66ea618c58c9ac33f0f206095ecfe3931cc6edb301f4b40480e3b44b0f39aea7a25fed8eef47e63523e7e670082947a3662cdc04c68ebbe5dfc89",
-    "algorithm": "sha512",
-    "filename": "rustc.tar.xz",
-    "unpack": true
-  },
-  {
-    "size": 12072532,
-    "digest": "3915f8ec396c56a8a92e6f9695b70f09ce9d1582359d1258e37e3fd43a143bc974410e4cfc27f500e095f34a8956206e0ebf799b7287f0f38def0d5e34ed71c9",
-    "algorithm": "sha512",
-    "filename": "gtk3.tar.xz",
-    "setup": "setup.sh",
-    "unpack": true
-  }
-]

deleted file mode 100644
--- a/browser/config/tooltool-manifests/linux64/clang.manifest
+++ /dev/null
@@ -1,18 +0,0 @@
-[
-  {
-    "size": 12072532,
-    "digest": "3915f8ec396c56a8a92e6f9695b70f09ce9d1582359d1258e37e3fd43a143bc974410e4cfc27f500e095f34a8956206e0ebf799b7287f0f38def0d5e34ed71c9",
-    "algorithm": "sha512",
-    "filename": "gtk3.tar.xz",
-    "setup": "setup.sh",
-    "unpack": true
-  },
-  {
-    "version": "rustc 1.19.0 (0ade33941 2017-07-17) repack",
-    "size": 161014632,
-    "digest": "65bebcf94fc66ea618c58c9ac33f0f206095ecfe3931cc6edb301f4b40480e3b44b0f39aea7a25fed8eef47e63523e7e670082947a3662cdc04c68ebbe5dfc89",
-    "algorithm": "sha512",
-    "filename": "rustc.tar.xz",
-    "unpack": true
-  }
-]

deleted file mode 100644
--- a/browser/config/tooltool-manifests/linux64/clang.manifest.centos6
+++ /dev/null
@@ -1,18 +0,0 @@
-[
-  {
-    "size": 12072532,
-    "digest": "3915f8ec396c56a8a92e6f9695b70f09ce9d1582359d1258e37e3fd43a143bc974410e4cfc27f500e095f34a8956206e0ebf799b7287f0f38def0d5e34ed71c9",
-    "algorithm": "sha512",
-    "filename": "gtk3.tar.xz",
-    "setup": "setup.sh",
-    "unpack": true
-  },
-  {
-    "version": "rustc 1.19.0 (0ade33941 2017-07-17) repack",
-    "size": 161014632,
-    "digest": "65bebcf94fc66ea618c58c9ac33f0f206095ecfe3931cc6edb301f4b40480e3b44b0f39aea7a25fed8eef47e63523e7e670082947a3662cdc04c68ebbe5dfc89",
-    "algorithm": "sha512",
-    "filename": "rustc.tar.xz",
-    "unpack": true
-  }
-]

deleted file mode 100644
--- a/browser/config/tooltool-manifests/linux64/fuzzing.manifest
+++ /dev/null
@@ -1,18 +0,0 @@
-[
-  {
-    "version": "rustc 1.19.0 (0ade33941 2017-07-17) repack",
-    "size": 161014632,
-    "digest": "65bebcf94fc66ea618c58c9ac33f0f206095ecfe3931cc6edb301f4b40480e3b44b0f39aea7a25fed8eef47e63523e7e670082947a3662cdc04c68ebbe5dfc89",
-    "algorithm": "sha512",
-    "filename": "rustc.tar.xz",
-    "unpack": true
-  },
-  {
-    "size": 12072532,
-    "digest": "3915f8ec396c56a8a92e6f9695b70f09ce9d1582359d1258e37e3fd43a143bc974410e4cfc27f500e095f34a8956206e0ebf799b7287f0f38def0d5e34ed71c9",
-    "algorithm": "sha512",
-    "filename": "gtk3.tar.xz",
-    "setup": "setup.sh",
-    "unpack": true
-  }
-]

deleted file mode 100644
--- a/browser/config/tooltool-manifests/linux64/msan.manifest
+++ /dev/null
@@ -1,18 +0,0 @@
-[
-  {
-    "version": "rustc 1.19.0 (0ade33941 2017-07-17) repack",
-    "size": 161014632,
-    "digest": "65bebcf94fc66ea618c58c9ac33f0f206095ecfe3931cc6edb301f4b40480e3b44b0f39aea7a25fed8eef47e63523e7e670082947a3662cdc04c68ebbe5dfc89",
-    "algorithm": "sha512",
-    "filename": "rustc.tar.xz",
-    "unpack": true
-  },
-  {
-    "size": 12072532,
-    "digest": "3915f8ec396c56a8a92e6f9695b70f09ce9d1582359d1258e37e3fd43a143bc974410e4cfc27f500e095f34a8956206e0ebf799b7287f0f38def0d5e34ed71c9",
-    "algorithm": "sha512",
-    "filename": "gtk3.tar.xz",
-    "setup": "setup.sh",
-    "unpack": true
-  }
-]

--- a/taskcluster/ci/build/linux.yml
+++ b/taskcluster/ci/build/linux.yml
@@ -371,17 +371,17 @@ linux64-asan/opt:
         job-name: linux64-asan-opt
     treeherder:
         platform: linux64/asan
         symbol: tc(Bo)
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         env:
             PERFHERDER_EXTRA_OPTIONS: "opt asan"
-            TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/asan.manifest"
+            TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/releng.manifest"
         max-run-time: 36000
     run:
         using: mozharness
         actions: [get-secrets build check-test update]
         config:
             - builds/releng_base_linux_64_builds.py
             - balrog/production.py
         script: "mozharness/scripts/fx_desktop_build.py"
@@ -402,17 +402,17 @@ linux64-asan-fuzzing/opt:
         job-name: linux64-fuzzing-asan-opt
     treeherder:
         platform: linux64/asan
         symbol: tc(Bof)
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         env:
             PERFHERDER_EXTRA_OPTIONS: asan-fuzzing
-            TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/fuzzing.manifest"
+            TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/releng.manifest"
         max-run-time: 36000
     run:
         using: mozharness
         actions: [get-secrets build check-test update]
         config:
             - builds/releng_base_linux_64_builds.py
             - balrog/production.py
         script: "mozharness/scripts/fx_desktop_build.py"
@@ -432,17 +432,17 @@ linux64-asan/debug:
         job-name: linux64-asan-debug
     treeherder:
         platform: linux64/asan
         symbol: tc(Bd)
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         env:
             PERFHERDER_EXTRA_OPTIONS: "debug asan"
-            TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/asan.manifest"
+            TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/releng.manifest"
         max-run-time: 36000
     run:
         using: mozharness
         actions: [get-secrets build check-test update]
         config:
             - builds/releng_base_linux_64_builds.py
             - balrog/production.py
         script: "mozharness/scripts/fx_desktop_build.py"

--- a/taskcluster/ci/spidermonkey/kind.yml
+++ b/taskcluster/ci/spidermonkey/kind.yml
@@ -131,17 +131,17 @@ jobs:
     sm-asan/opt:
         description: "Spidermonkey Address Sanitizer"
         index:
             job-name: sm-asan-opt
         treeherder:
             symbol: SM-tc(asan)
         worker:
             env:
-                TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/asan.manifest"
+                TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/releng.manifest"
         run:
             spidermonkey-variant: asan
 
     sm-compacting/debug:
         description: "Spidermonkey Compacting"
         index:
             job-name: sm-compacting-debug
         treeherder:
@@ -153,17 +153,17 @@ jobs:
     sm-msan/opt:
         description: "Spidermonkey Memory Sanitizer"
         index:
             job-name: sm-msan-opt
         treeherder:
             symbol: SM-tc(msan)
         worker:
             env:
-                TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/msan.manifest"
+                TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/releng.manifest"
         run:
             spidermonkey-variant: msan
 
     sm-tsan/opt:
         description: "Spidermonkey Thread Sanitizer"
         index:
             job-name: sm-tsan-opt
         treeherder:

--- a/taskcluster/ci/static-analysis/kind.yml
+++ b/taskcluster/ci/static-analysis/kind.yml
@@ -28,17 +28,17 @@ jobs:
             job-name: linux64-st-an-debug
         treeherder:
             platform: linux64/debug
         worker-type: aws-provisioner-v1/gecko-{level}-b-linux
         worker:
             docker-image: {in-tree: desktop-build}
             max-run-time: 36000
             env:
-                TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/clang.manifest.centos6"
+                TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/releng.manifest"
         run:
             using: mozharness
             actions: [build]
             config:
                 - builds/releng_sub_linux_configs/64_stat_and_debug.py
                 - balrog/production.py
             script: "mozharness/scripts/fx_desktop_build.py"
             tooltool-downloads: public
@@ -53,17 +53,17 @@ jobs:
             job-name: linux64-st-an-opt
         treeherder:
             platform: linux64/opt
         worker-type: aws-provisioner-v1/gecko-{level}-b-linux
         worker:
             docker-image: {in-tree: desktop-build}
             max-run-time: 36000
             env:
-                TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/clang.manifest.centos6"
+                TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/releng.manifest"
         run:
             using: mozharness
             actions: [build]
             config:
                 - builds/releng_sub_linux_configs/64_stat_and_opt.py
                 - balrog/production.py
             script: "mozharness/scripts/fx_desktop_build.py"
             tooltool-downloads: public

--- a/taskcluster/ci/toolchain/linux.yml
+++ b/taskcluster/ci/toolchain/linux.yml
@@ -210,17 +210,17 @@ linux64-sccache:
         platform: toolchains/opt
         symbol: TL(sccache)
         tier: 1
     worker-type: aws-provisioner-v1/gecko-{level}-b-linux
     worker:
         docker-image: {in-tree: desktop-build}
         max-run-time: 36000
         env:
-            TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/clang.manifest"
+            TOOLTOOL_MANIFEST: "browser/config/tooltool-manifests/linux64/releng.manifest"
     run:
         using: toolchain-script
         script: build-sccache.sh
         resources:
             - 'taskcluster/scripts/misc/tooltool-download.sh'
         toolchain-artifact: public/build/sccache2.tar.xz
     toolchains:
         - linux64-clang

--- a/taskcluster/docker/rust-build/splat_rust.py
+++ b/taskcluster/docker/rust-build/splat_rust.py
@@ -55,22 +55,17 @@ def update_manifest(source_manifest, tar
             save_manifest(old, target_filename)
             break
 
 
 '''Mapping from targets to target filenames.'''
 TARGETS = {
         'x86_64-unknown-linux-gnu-repack': [
             'browser/config/tooltool-manifests/linux32/releng.manifest',
-            'browser/config/tooltool-manifests/linux64/asan.manifest',
-            'browser/config/tooltool-manifests/linux64/clang.manifest',
-            'browser/config/tooltool-manifests/linux64/clang.manifest.centos6',
-            'browser/config/tooltool-manifests/linux64/fuzzing.manifest',
             'browser/config/tooltool-manifests/linux64/hazard.manifest',
-            'browser/config/tooltool-manifests/linux64/msan.manifest',
             'browser/config/tooltool-manifests/linux64/releng.manifest',
             ],
         'x86_64-unknown-linux-gnu-android-cross-repack': [
             'mobile/android/config/tooltool-manifests/android/releng.manifest',
             'mobile/android/config/tooltool-manifests/android-x86/releng.manifest',
             'mobile/android/config/tooltool-manifests/android-gradle-dependencies/releng.manifest',
             ],
         'x86_64-unknown-linux-gnu-mingw32-cross-repack': [

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan.py
@@ -13,17 +13,17 @@ config = {
         'sendchange',
         'check-test',
         # 'update',
     ],
     'stage_platform': 'linux64-asan',
     'publish_nightly_en_US_routes': False,
     'build_type': 'asan',
     'tooltool_manifest_src': "browser/config/tooltool-manifests/linux64/\
-asan.manifest",
+releng.manifest",
     'platform_supports_post_upload_to_latest': False,
     'enable_signing': False,
     'enable_talos_sendchange': False,
     #### 64 bit build specific #####
     'env': {
         'MOZBUILD_STATE_PATH': os.path.join(os.getcwd(), '.mozbuild'),
         'DISPLAY': ':2',
         'HG_SHARE_BASE_DIR': '/builds/hg-shared',

--- a/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan_and_debug.py
+++ b/testing/mozharness/configs/builds/releng_sub_linux_configs/64_asan_and_debug.py
@@ -14,17 +14,17 @@ config = {
         'check-test',
         # 'update',
     ],
     'stage_platform': 'linux64-asan-debug',
     'publish_nightly_en_US_routes': False,
     'build_type': 'asan-debug',
     'debug_build': True,
     'tooltool_manifest_src': "browser/config/tooltool-manifests/linux64/\
-asan.manifest",
+releng.manifest",
     'platform_supports_post_upload_to_latest': False,
     'enable_signing': False,
     'enable_talos_sendchange': False,
     #### 64 bit build specific #####
     'env': {
         'MOZBUILD_STATE_PATH': os.path.join(os.getcwd(), '.mozbuild'),
         'DISPLAY': ':2',
         'HG_SHARE_BASE_DIR': '/builds/hg-shared',