diff --git a/.github/workflows/compare_perf.yml b/.github/workflows/compare_perf.yml
index e5a2d4f9c928eac2d1b1cf54ed374f8b0cca5d25..a315ce5edd103ba33cf58c9042b77fb55ac85440 100644
--- a/.github/workflows/compare_perf.yml
+++ b/.github/workflows/compare_perf.yml
@@ -34,6 +34,12 @@ jobs:
       run: ./script/install-mold
     - name: steps::download_wasi_sdk
       run: ./script/download-wasi-sdk
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: compare_perf::run_perf::install_hyperfine
       uses: taiki-e/install-action@hyperfine
     - name: steps::git_checkout
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 13cc3e912ad27797c4e5fbe87f3906200323457c..e7782fac65571dba299390a26e3a23dcca819dc5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -41,6 +41,12 @@ jobs:
       uses: taiki-e/install-action@nextest
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 300
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: steps::cargo_nextest
       run: cargo nextest run --workspace --no-fail-fast
     - name: steps::show_sccache_stats
@@ -88,6 +94,12 @@ jobs:
       uses: taiki-e/install-action@nextest
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 250
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: steps::cargo_nextest
       run: cargo nextest run --workspace --no-fail-fast
     - name: steps::show_sccache_stats
@@ -133,6 +145,16 @@ jobs:
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than.ps1 250
       shell: pwsh
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: steps::cargo_nextest
       run: cargo nextest run --workspace --no-fail-fast
       shell: pwsh
@@ -169,6 +191,12 @@ jobs:
         R2_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
         R2_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
         SCCACHE_BUCKET: sccache-zed
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: steps::clippy
       run: ./script/clippy
     - name: steps::show_sccache_stats
@@ -204,6 +232,12 @@ jobs:
         R2_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
         R2_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
         SCCACHE_BUCKET: sccache-zed
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: steps::clippy
       run: ./script/clippy
     - name: steps::show_sccache_stats
@@ -230,6 +264,16 @@ jobs:
         R2_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
         R2_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
         SCCACHE_BUCKET: sccache-zed
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: steps::clippy
       run: ./script/clippy.ps1
       shell: pwsh
@@ -308,6 +352,12 @@ jobs:
       run: ./script/install-mold
     - name: steps::download_wasi_sdk
       run: ./script/download-wasi-sdk
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: ./script/bundle-linux
       run: ./script/bundle-linux
     - name: '@actions/upload-artifact zed-linux-aarch64.tar.gz'
@@ -348,6 +398,12 @@ jobs:
       run: ./script/install-mold
     - name: steps::download_wasi_sdk
       run: ./script/download-wasi-sdk
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: ./script/bundle-linux
       run: ./script/bundle-linux
     - name: '@actions/upload-artifact zed-linux-x86_64.tar.gz'
@@ -393,6 +449,12 @@ jobs:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 300
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: run_bundling::bundle_mac::bundle_mac
       run: ./script/bundle-mac aarch64-apple-darwin
     - name: '@actions/upload-artifact Zed-aarch64.dmg'
@@ -438,6 +500,12 @@ jobs:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 300
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: run_bundling::bundle_mac::bundle_mac
       run: ./script/bundle-mac x86_64-apple-darwin
     - name: '@actions/upload-artifact Zed-x86_64.dmg'
@@ -481,6 +549,16 @@ jobs:
       uses: matbour/setup-sentry-cli@3e938c54b3018bdd019973689ef984e033b0454b
       with:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: run_bundling::bundle_windows::bundle_windows
       run: script/bundle-windows.ps1 -Architecture aarch64
       shell: pwsh
@@ -526,6 +604,16 @@ jobs:
       uses: matbour/setup-sentry-cli@3e938c54b3018bdd019973689ef984e033b0454b
       with:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: run_bundling::bundle_windows::bundle_windows
       run: script/bundle-windows.ps1 -Architecture x86_64
       shell: pwsh
diff --git a/.github/workflows/release_nightly.yml b/.github/workflows/release_nightly.yml
index 916b7078bc79b3dfe691ecf5b2c998e7fa155d50..5645fb987d488854c4f719f2afad45ca50ba1f79 100644
--- a/.github/workflows/release_nightly.yml
+++ b/.github/workflows/release_nightly.yml
@@ -53,6 +53,16 @@ jobs:
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than.ps1 250
       shell: pwsh
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: steps::cargo_nextest
       run: cargo nextest run --workspace --no-fail-fast
       shell: pwsh
@@ -86,6 +96,16 @@ jobs:
         R2_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
         R2_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
         SCCACHE_BUCKET: sccache-zed
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: steps::clippy
       run: ./script/clippy.ps1
       shell: pwsh
@@ -124,6 +144,12 @@ jobs:
       run: ./script/install-mold
     - name: steps::download_wasi_sdk
       run: ./script/download-wasi-sdk
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: ./script/bundle-linux
       run: ./script/bundle-linux
     - name: '@actions/upload-artifact zed-linux-aarch64.tar.gz'
@@ -170,6 +196,12 @@ jobs:
       run: ./script/install-mold
     - name: steps::download_wasi_sdk
       run: ./script/download-wasi-sdk
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: ./script/bundle-linux
       run: ./script/bundle-linux
     - name: '@actions/upload-artifact zed-linux-x86_64.tar.gz'
@@ -221,6 +253,12 @@ jobs:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 300
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: run_bundling::bundle_mac::bundle_mac
       run: ./script/bundle-mac aarch64-apple-darwin
     - name: '@actions/upload-artifact Zed-aarch64.dmg'
@@ -272,6 +310,12 @@ jobs:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 300
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: run_bundling::bundle_mac::bundle_mac
       run: ./script/bundle-mac x86_64-apple-darwin
     - name: '@actions/upload-artifact Zed-x86_64.dmg'
@@ -323,6 +367,16 @@ jobs:
       uses: matbour/setup-sentry-cli@3e938c54b3018bdd019973689ef984e033b0454b
       with:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: run_bundling::bundle_windows::bundle_windows
       run: script/bundle-windows.ps1 -Architecture aarch64
       shell: pwsh
@@ -376,6 +430,16 @@ jobs:
       uses: matbour/setup-sentry-cli@3e938c54b3018bdd019973689ef984e033b0454b
       with:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: run_bundling::bundle_windows::bundle_windows
       run: script/bundle-windows.ps1 -Architecture x86_64
       shell: pwsh
diff --git a/.github/workflows/run_bundling.yml b/.github/workflows/run_bundling.yml
index 2b536425a1dc4b9663c726fd9259c95e0626efda..dd7435edf2fe015b2808c718cabff66c1fcba96a 100644
--- a/.github/workflows/run_bundling.yml
+++ b/.github/workflows/run_bundling.yml
@@ -34,6 +34,12 @@ jobs:
       run: ./script/install-mold
     - name: steps::download_wasi_sdk
       run: ./script/download-wasi-sdk
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: ./script/bundle-linux
       run: ./script/bundle-linux
     - name: '@actions/upload-artifact zed-linux-aarch64.tar.gz'
@@ -73,6 +79,12 @@ jobs:
       run: ./script/install-mold
     - name: steps::download_wasi_sdk
       run: ./script/download-wasi-sdk
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: ./script/bundle-linux
       run: ./script/bundle-linux
     - name: '@actions/upload-artifact zed-linux-x86_64.tar.gz'
@@ -117,6 +129,12 @@ jobs:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 300
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: run_bundling::bundle_mac::bundle_mac
       run: ./script/bundle-mac aarch64-apple-darwin
     - name: '@actions/upload-artifact Zed-aarch64.dmg'
@@ -161,6 +179,12 @@ jobs:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 300
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: run_bundling::bundle_mac::bundle_mac
       run: ./script/bundle-mac x86_64-apple-darwin
     - name: '@actions/upload-artifact Zed-x86_64.dmg'
@@ -203,6 +227,16 @@ jobs:
       uses: matbour/setup-sentry-cli@3e938c54b3018bdd019973689ef984e033b0454b
       with:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: run_bundling::bundle_windows::bundle_windows
       run: script/bundle-windows.ps1 -Architecture aarch64
       shell: pwsh
@@ -247,6 +281,16 @@ jobs:
       uses: matbour/setup-sentry-cli@3e938c54b3018bdd019973689ef984e033b0454b
       with:
         token: ${{ secrets.SENTRY_AUTH_TOKEN }}
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: run_bundling::bundle_windows::bundle_windows
       run: script/bundle-windows.ps1 -Architecture x86_64
       shell: pwsh
diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 4279afbcb0751527a37b591e8d3689d85b5b03c1..e218dc64389f883dd2385dec545f72170fce6934 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -162,6 +162,16 @@ jobs:
         R2_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
         R2_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
         SCCACHE_BUCKET: sccache-zed
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: steps::clippy
       run: ./script/clippy.ps1
       shell: pwsh
@@ -201,6 +211,12 @@ jobs:
         R2_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
         R2_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
         SCCACHE_BUCKET: sccache-zed
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: steps::clippy
       run: ./script/clippy
     - name: steps::show_sccache_stats
@@ -232,6 +248,12 @@ jobs:
         R2_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
         R2_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
         SCCACHE_BUCKET: sccache-zed
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: steps::clippy
       run: ./script/clippy
     - name: steps::show_sccache_stats
@@ -267,6 +289,16 @@ jobs:
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than.ps1 250
       shell: pwsh
+    - name: install_cargo_mtime
+      run: |-
+        New-Item -ItemType Directory -Path "target" -Force
+        Invoke-WebRequest -Uri "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-pc-windows-msvc-v0.1.2.tar.gz" -OutFile "target/cargo-mtime.tar.gz"
+        tar xzf target/cargo-mtime.tar.gz -C target
+        Remove-Item target/cargo-mtime.tar.gz
+      shell: pwsh
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime.exe . target/cargo-mtime.db
+      shell: pwsh
     - name: steps::cargo_nextest
       run: cargo nextest run --workspace --no-fail-fast${{ needs.orchestrate.outputs.changed_packages && format(' -E "{0}"', needs.orchestrate.outputs.changed_packages) || '' }}
       shell: pwsh
@@ -319,6 +351,12 @@ jobs:
       uses: taiki-e/install-action@nextest
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 250
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-x86_64-unknown-linux-musl-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: steps::cargo_nextest
       run: cargo nextest run --workspace --no-fail-fast${{ needs.orchestrate.outputs.changed_packages && format(' -E "{0}"', needs.orchestrate.outputs.changed_packages) || '' }}
     - name: steps::show_sccache_stats
@@ -370,6 +408,12 @@ jobs:
       uses: taiki-e/install-action@nextest
     - name: steps::clear_target_dir_if_large
       run: ./script/clear-target-dir-if-larger-than 300
+    - name: install_cargo_mtime
+      run: |-
+        mkdir -p target
+        curl -sL "https://github.com/zed-industries/cargo-mtime/releases/download/v0.1.2/cargo-mtime-aarch64-apple-darwin-v0.1.2.tar.gz" | tar xz -C target
+    - name: run_cargo_mtime
+      run: ./target/cargo-mtime . target/cargo-mtime.db
     - name: steps::cargo_nextest
       run: cargo nextest run --workspace --no-fail-fast${{ needs.orchestrate.outputs.changed_packages && format(' -E "{0}"', needs.orchestrate.outputs.changed_packages) || '' }}
     - name: steps::show_sccache_stats
diff --git a/tooling/xtask/src/tasks/workflows/compare_perf.rs b/tooling/xtask/src/tasks/workflows/compare_perf.rs
index 1d111acc4f8a4dc47edea6f45c0b93c845b7cda2..8bc623369b45ff593d0e1b1526e8cbe86be615f1 100644
--- a/tooling/xtask/src/tasks/workflows/compare_perf.rs
+++ b/tooling/xtask/src/tasks/workflows/compare_perf.rs
@@ -55,6 +55,8 @@ pub fn run_perf(
             .add_step(steps::checkout_repo())
             .add_step(steps::setup_cargo_config(runners::Platform::Linux))
             .map(steps::install_linux_dependencies)
+            .add_step(steps::install_cargo_mtime(runners::Platform::Linux))
+            .add_step(steps::run_cargo_mtime(runners::Platform::Linux))
             .add_step(install_hyperfine())
             .add_step(steps::git_checkout(base))
             .add_step(cargo_perf_test(base, crate_name))
diff --git a/tooling/xtask/src/tasks/workflows/run_bundling.rs b/tooling/xtask/src/tasks/workflows/run_bundling.rs
index 7fa82e80c52b9e6faec6a377d906269e7a3dbb77..c374ada5de94dc1f56b9c3e188ab5245cb42a568 100644
--- a/tooling/xtask/src/tasks/workflows/run_bundling.rs
+++ b/tooling/xtask/src/tasks/workflows/run_bundling.rs
@@ -102,6 +102,8 @@ pub(crate) fn bundle_mac(
             .add_step(steps::setup_node())
             .add_step(steps::setup_sentry())
             .add_step(steps::clear_target_dir_if_large(runners::Platform::Mac))
+            .add_step(steps::install_cargo_mtime(Platform::Mac))
+            .add_step(steps::run_cargo_mtime(Platform::Mac))
             .add_step(bundle_mac(arch))
             .add_step(upload_artifact(&format!(
                 "target/{arch}-apple-darwin/release/{artifact_name}"
@@ -152,6 +154,8 @@ pub(crate) fn bundle_linux(
             })
             .add_step(steps::setup_sentry())
             .map(steps::install_linux_dependencies)
+            .add_step(steps::install_cargo_mtime_for_arch(Platform::Linux, arch))
+            .add_step(steps::run_cargo_mtime(Platform::Linux))
             .add_step(steps::script("./script/bundle-linux"))
             .add_step(upload_artifact(&format!("target/release/{artifact_name}")))
             .add_step(upload_artifact(&format!(
@@ -191,6 +195,8 @@ pub(crate) fn bundle_windows(
                 job.add_step(set_release_channel(platform, release_channel))
             })
             .add_step(steps::setup_sentry())
+            .add_step(steps::install_cargo_mtime(Platform::Windows))
+            .add_step(steps::run_cargo_mtime(Platform::Windows))
             .add_step(bundle_windows(arch))
             .add_step(upload_artifact(&format!("target/{artifact_name}")))
             .add_step(upload_artifact(&format!(
diff --git a/tooling/xtask/src/tasks/workflows/run_tests.rs b/tooling/xtask/src/tasks/workflows/run_tests.rs
index 49c4488dc95620c00a6a8f929cfb756d9c4eb6fa..fc71bbf6b5ec062e837d5efc25caea017ba7a6a7 100644
--- a/tooling/xtask/src/tasks/workflows/run_tests.rs
+++ b/tooling/xtask/src/tasks/workflows/run_tests.rs
@@ -374,6 +374,8 @@ pub(crate) fn clippy(platform: Platform) -> NamedJob {
                 steps::install_linux_dependencies,
             )
             .add_step(steps::setup_sccache(platform))
+            .add_step(steps::install_cargo_mtime(platform))
+            .add_step(steps::run_cargo_mtime(platform))
             .add_step(steps::clippy(platform))
             .add_step(steps::show_sccache_stats(platform)),
     }
@@ -428,6 +430,8 @@ fn run_platform_tests_impl(platform: Platform, filter_packages: bool) -> NamedJo
                 |job| job.add_step(steps::cargo_install_nextest()),
             )
             .add_step(steps::clear_target_dir_if_large(platform))
+            .add_step(steps::install_cargo_mtime(platform))
+            .add_step(steps::run_cargo_mtime(platform))
             .when(filter_packages, |job| {
                 job.add_step(
                     steps::cargo_nextest(platform).with_changed_packages_filter("orchestrate"),
diff --git a/tooling/xtask/src/tasks/workflows/steps.rs b/tooling/xtask/src/tasks/workflows/steps.rs
index ff0b73b805fcbb83d1f81c303bd4301c0ead6c78..7c31aec65653e1f9258b60af2a95bbe748335a22 100644
--- a/tooling/xtask/src/tasks/workflows/steps.rs
+++ b/tooling/xtask/src/tasks/workflows/steps.rs
@@ -1,8 +1,13 @@
 use gh_workflow::*;
 
-use crate::tasks::workflows::{runners::Platform, vars, vars::StepOutput};
+use crate::tasks::workflows::{
+    runners::{Arch, Platform},
+    vars,
+    vars::StepOutput,
+};
 
 const SCCACHE_R2_BUCKET: &str = "sccache-zed";
+const CARGO_MTIME_VERSION: &str = "v0.1.2";
 
 const BASH_SHELL: &str = "bash -euxo pipefail {0}";
 // https://docs.github.com/en/actions/reference/workflows-and-actions/workflow-syntax#jobsjob_idstepsshell
@@ -157,6 +162,62 @@ pub fn cache_rust_dependencies_namespace() -> Step<Use> {
         .add_with(("path", "~/.rustup"))
 }
 
+fn cargo_mtime_target(platform: Platform, arch: Arch) -> &'static str {
+    match (platform, arch) {
+        (Platform::Linux, Arch::X86_64) => "x86_64-unknown-linux-musl",
+        (Platform::Linux, Arch::AARCH64) => "aarch64-unknown-linux-musl",
+        (Platform::Mac, Arch::X86_64) => "x86_64-apple-darwin",
+        (Platform::Mac, Arch::AARCH64) => "aarch64-apple-darwin",
+        (Platform::Windows, Arch::X86_64) => "x86_64-pc-windows-msvc",
+        (Platform::Windows, Arch::AARCH64) => "aarch64-pc-windows-msvc",
+    }
+}
+
+fn default_runner_arch(platform: Platform) -> Arch {
+    match platform {
+        Platform::Linux => Arch::X86_64,
+        Platform::Mac => Arch::AARCH64,
+        Platform::Windows => Arch::X86_64,
+    }
+}
+
+pub fn install_cargo_mtime(platform: Platform) -> Step<Run> {
+    install_cargo_mtime_for_arch(platform, default_runner_arch(platform))
+}
+
+pub fn install_cargo_mtime_for_arch(platform: Platform, arch: Arch) -> Step<Run> {
+    let target = cargo_mtime_target(platform, arch);
+    let url = format!(
+        "https://github.com/zed-industries/cargo-mtime/releases/download/{}/cargo-mtime-{}-{}.tar.gz",
+        CARGO_MTIME_VERSION, target, CARGO_MTIME_VERSION
+    );
+    match platform {
+        Platform::Windows => Step::new("install_cargo_mtime")
+            .run(format!(
+                "New-Item -ItemType Directory -Path \"target\" -Force\n\
+             Invoke-WebRequest -Uri \"{url}\" -OutFile \"target/cargo-mtime.tar.gz\"\n\
+             tar xzf target/cargo-mtime.tar.gz -C target\n\
+             Remove-Item target/cargo-mtime.tar.gz"
+            ))
+            .shell(PWSH_SHELL),
+        Platform::Linux | Platform::Mac => Step::new("install_cargo_mtime").run(format!(
+            "mkdir -p target\n\
+             curl -sL \"{url}\" | tar xz -C target"
+        )),
+    }
+}
+
+pub fn run_cargo_mtime(platform: Platform) -> Step<Run> {
+    match platform {
+        Platform::Windows => Step::new("run_cargo_mtime")
+            .run("./target/cargo-mtime.exe . target/cargo-mtime.db")
+            .shell(PWSH_SHELL),
+        Platform::Linux | Platform::Mac => {
+            Step::new("run_cargo_mtime").run("./target/cargo-mtime . target/cargo-mtime.db")
+        }
+    }
+}
+
 pub fn setup_sccache(platform: Platform) -> Step<Run> {
     let step = match platform {
         Platform::Windows => named::pwsh("./script/setup-sccache.ps1"),