use older cross image to build linux packages (fixes #1256)

Author: GyulyVGC

.github/workflows/package.yml

@@ -103,6 +103,8 @@ jobs:
 
       - name: Build binary (Linux)
         if: matrix.os == 'ubuntu'
+        env:
+          CROSS_NO_WARNINGS: "0"
         run: cross build --release --target ${{ matrix.target }}
 
       - name: Build binary (macOS/Windows)

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All Sniffnet releases with the relative changes are documented in this file.
 
-## [1.5.1] - 2026-07-20
+## [1.5.1] - 2026-07-21
 - Show latency of connections ([#1194](https://github.com/GyulyVGC/sniffnet/pull/1194) — fixes [#845](https://github.com/GyulyVGC/sniffnet/issues/845))
 - Added Hungarian translation 🇭🇺 ([#1197](https://github.com/GyulyVGC/sniffnet/pull/1197))
 - Added Sinhala translation 🇱🇰 ([#1239](https://github.com/GyulyVGC/sniffnet/pull/1239))
@@ -22,6 +22,7 @@ All Sniffnet releases with the relative changes are documented in this file.
 - Use a thread pool for reverse DNS lookups to avoid stalling hosts resolutions (fixes [#1257](https://github.com/GyulyVGC/sniffnet/issues/1257))
 - Fix unseen hosts and services not appearing dimmed in thumbnail mode (fixes [#1142](https://github.com/GyulyVGC/sniffnet/issues/1142))
 - Fix `X-AppImage-Version` field in Linux AppImage metadata to correctly reflect the app version ([#1174](https://github.com/GyulyVGC/sniffnet/pull/1174) — fixes [#1003](https://github.com/GyulyVGC/sniffnet/issues/1003))
+- Fix Linux packages failing to run on distros with `glibc` older than 2.39 (fixes [#1256](https://github.com/GyulyVGC/sniffnet/issues/1256))
 
 ## [1.5.0] - 2026-04-14
 - Show which apps and programs are generating network traffic ([#1056](https://github.com/GyulyVGC/sniffnet/pull/1056) — fixes [#170](https://github.com/GyulyVGC/sniffnet/issues/170))

Cross.toml

@@ -1,4 +1,7 @@
 [target.x86_64-unknown-linux-gnu]
+# pin the 0.2.5 image (Ubuntu 16.04, glibc 2.23) so releases keep running on older
+# distros: cross's `main` images moved to Ubuntu 24.04 (glibc 2.39)
+image = "ghcr.io/cross-rs/x86_64-unknown-linux-gnu:0.2.5"
 pre-build = [
     "dpkg --add-architecture amd64",
     "apt update -y && apt install -y libpcap-dev:amd64 libasound2-dev:amd64 libfontconfig1-dev:amd64",
@@ -8,6 +11,7 @@ pre-build = [
 ]
 
 [target.i686-unknown-linux-gnu]
+image = "ghcr.io/cross-rs/i686-unknown-linux-gnu:0.2.5"
 pre-build = [
     "dpkg --add-architecture i386",
     "apt update -y && apt install -y libpcap-dev:i386 libasound2-dev:i386 libfontconfig1-dev:i386",
@@ -17,6 +21,7 @@ pre-build = [
 ]
 
 [target.aarch64-unknown-linux-gnu]
+image = "ghcr.io/cross-rs/aarch64-unknown-linux-gnu:0.2.5"
 pre-build = [
     "dpkg --add-architecture arm64",
     "apt update -y && apt install -y libpcap-dev:arm64 libasound2-dev:arm64 libfontconfig1-dev:arm64",
@@ -26,6 +31,7 @@ pre-build = [
 ]
 
 [target.armv7-unknown-linux-gnueabihf]
+image = "ghcr.io/cross-rs/armv7-unknown-linux-gnueabihf:0.2.5"
 pre-build = [
     "dpkg --add-architecture armhf",
     "apt update -y && apt install -y libpcap-dev:armhf libasound2-dev:armhf libfontconfig1-dev:armhf",