Try using cargo's built-in stripping feature.

This feature should be stable in 1.58

rust-lang/cargo#10088

Author: AustinWise

.github/workflows/release.yml

@@ -9,8 +9,8 @@ name: release
 on:
   push:
     # Enable when testing release infrastructure on a branch.
-    # branches:
-    # - ci_testing
+    branches:
+    - ci_testing
     tags:
     - "[0-9]+.[0-9]+.[0-9]+"
 jobs:
@@ -83,7 +83,7 @@ jobs:
     - name: Install Rust
       uses: actions-rs/toolchain@v1
       with:
-        toolchain: stable
+        toolchain: nightly
         override: true
         target: ${{ matrix.target }}
 
@@ -93,9 +93,9 @@ jobs:
         command: build
         args: --release --target ${{ matrix.target }}
 
-    - name: Strip release binary (linux and macos)
-      if: matrix.os == 'linux' || matrix.os == 'macos'
-      run: strip "target/${{ matrix.target }}/release/${{ env.PROGRAM_NAME }}"
+    # - name: Strip release binary (linux and macos)
+    #   if: matrix.os == 'ubuntu' || matrix.os == 'macos'
+    #   run: strip "target/${{ matrix.target }}/release/${{ env.PROGRAM_NAME }}"
 
     - name: Build archive
       shell: bash

Cargo.toml

@@ -1,3 +1,5 @@
+cargo-features = ["strip"]
+
 [package]
 name = "smeagol-wiki"
 version = "0.1.2"
@@ -7,7 +9,8 @@ license = "MIT"
 homepage = "https://github.com/AustinWise/smeagol/"
 repository = "https://github.com/AustinWise/smeagol/"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[profile.release]
+strip = "symbols"
 
 [dependencies]
 askama = "0.11"