Increment Ubuntu base image versions to 20.04.

Update linux-image script to latest kernel and debian versions.

Update by default to kernel version 5.10.0-8. This means updating our debian source to bullseye from buster. 32-bit big-endian mips was discontinued in bullseye, so we revert to buster. For some images, due to constantly updating linux kernel versions, we need to use wildcards otherwise the build step breaks. Since there may be more than one relevant package, we've added a function to manually expand wildcards and select the best kernel version, `max_kernel_version`. Likewise, on 32-bit big-endian mips, we need to specify the ncurses version.

Created temporary symlinks for autconf and autom4te due to the build expecting a hard-coded version (2.69) of these binaries. Fixed the patch for `debian/rules` due to changed line numbers. Updated the patch to use dwarf rather than sjlj exceptions to patch the template file (`debian/gcc-mingw-w64-i686.install.in`) since `debian/gcc-mingw-w64-i686.install` is overwritten during the build.

For `x86_64-unknown-linux-gnu`, building the linux image fails unless we download specific versions of `libgcc-s1` and `libstdc++6`, since the pre-installed Ubuntu versions are higher than the Debian versions. We therefore extract the specific versions. However, while building the linux image, it prefers these system versions, so we must uninstall them or else while running `qemu-system` it cannot find `libgcc_s1.so.1`. Since `apt` and basically every other package besides `dpkg` relies on `libgcc-s1`, we have to temporarily delete it and reinstall it.

.changes/591.json

@@ -0,0 +1,6 @@
+{
+    "description": "Update Ubuntu images to 20.04 LTS.",
+    "type": "changed",
+    "breaking": true,
+    "issues": [417, 517, 556, 616]
+}

.github/workflows/ci.yml

@@ -267,7 +267,7 @@ jobs:
       - name: Build Docker image
         id: build-docker-image
         if: steps.prepare-meta.outputs.has-image
-        timeout-minutes: 60
+        timeout-minutes: 120
         run: cargo xtask build-docker-image -v "${TARGET}${SUB:+.$SUB}"
         env:
           TARGET: ${{ matrix.target }}

README.md

@@ -320,58 +320,58 @@ terminate.
 | Target                               |  libc  |   GCC   | C++ | QEMU  | `test` |
 |--------------------------------------|-------:|--------:|:---:|------:|:------:|
 | `aarch64-linux-android` [1]          | 9.0.8  | 9.0.8   | ✓   | 6.1.0 |   ✓    |
-| `aarch64-unknown-linux-gnu`          | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `aarch64-unknown-linux-musl`         | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `aarch64-unknown-linux-gnu`          | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `aarch64-unknown-linux-musl`         | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
 | `arm-linux-androideabi` [1]          | 9.0.8  | 9.0.8   | ✓   | 6.1.0 |   ✓    |
-| `arm-unknown-linux-gnueabi`          | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
+| `arm-unknown-linux-gnueabi`          | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
 | `arm-unknown-linux-gnueabihf`        | 2.17   | 8.3.0   | ✓   | 6.1.0 |   ✓    |
-| `arm-unknown-linux-musleabi`         | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
-| `arm-unknown-linux-musleabihf`       | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
-| `armv5te-unknown-linux-gnueabi`      | 2.27   | 7.5.0   | ✓   | 6.1.0 |   ✓    |
-| `armv5te-unknown-linux-musleabi`     | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `arm-unknown-linux-musleabi`         | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `arm-unknown-linux-musleabihf`       | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `armv5te-unknown-linux-gnueabi`      | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `armv5te-unknown-linux-musleabi`     | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
 | `armv7-linux-androideabi` [1]        | 9.0.8  | 9.0.8   | ✓   | 6.1.0 |   ✓    |
-| `armv7-unknown-linux-gnueabi`        | 2.27   | 7.5.0   | ✓   | 6.1.0 |   ✓    |
-| `armv7-unknown-linux-gnueabihf`      | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `armv7-unknown-linux-musleabi`       | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
-| `armv7-unknown-linux-musleabihf`     | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
-| `i586-unknown-linux-gnu`             | 2.23   | 5.4.0   | ✓   | N/A   |   ✓    |
-| `i586-unknown-linux-musl`            | 1.1.24  | 9.2.0   | ✓   | N/A   |   ✓    |
+| `armv7-unknown-linux-gnueabi`        | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `armv7-unknown-linux-gnueabihf`      | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `armv7-unknown-linux-musleabi`       | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `armv7-unknown-linux-musleabihf`     | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `i586-unknown-linux-gnu`             | 2.31   | 9.4.0   | ✓   | N/A   |   ✓    |
+| `i586-unknown-linux-musl`            | 1.1.24 | 9.2.0   | ✓   | N/A   |   ✓    |
 | `i686-unknown-freebsd`               | 1.5    | 6.4.0   | ✓   | N/A   |       |
 | `i686-linux-android` [1]             | 9.0.8  | 9.0.8   | ✓   | 6.1.0 |   ✓    |
-| `i686-pc-windows-gnu`                | N/A    | 7.5     | ✓   | N/A   |   ✓    |
-| `i686-unknown-linux-gnu`             | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `i686-unknown-linux-musl`            | 1.1.24  | 9.2.0   | ✓   | N/A   |   ✓    |
-| `mips-unknown-linux-gnu`             | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
+| `i686-pc-windows-gnu`                | N/A    | 9.4     | ✓   | N/A   |   ✓    |
+| `i686-unknown-linux-gnu`             | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `mips-unknown-linux-musl`            | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `mips-unknown-linux-gnu`             | 2.30   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
 | `mips-unknown-linux-musl`            | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
-| `mips64-unknown-linux-gnuabi64`      | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `mips64-unknown-linux-muslabi64`     | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
-| `mips64el-unknown-linux-gnuabi64`    | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `mips64el-unknown-linux-muslabi64`   | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
-| `mipsel-unknown-linux-gnu`           | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `mipsel-unknown-linux-musl`          | 1.1.24  | 9.2.0   | ✓   | 6.1.0 |   ✓    |
-| `powerpc-unknown-linux-gnu`          | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `powerpc64-unknown-linux-gnu`        | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `powerpc64le-unknown-linux-gnu`      | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `riscv64gc-unknown-linux-gnu`        | 2.27   | 7.5.0   | ✓   | 6.1.0 |   ✓    |
-| `s390x-unknown-linux-gnu`            | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
-| `sparc64-unknown-linux-gnu`          | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
+| `mips64-unknown-linux-gnuabi64`      | 2.30   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `mips64-unknown-linux-muslabi64`     | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `mips64el-unknown-linux-gnuabi64`    | 2.30   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `mips64el-unknown-linux-muslabi64`   | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `mipsel-unknown-linux-gnu`           | 2.30   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `mipsel-unknown-linux-musl`          | 1.1.24 | 9.2.0   | ✓   | 6.1.0 |   ✓    |
+| `powerpc-unknown-linux-gnu`          | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `powerpc64-unknown-linux-gnu`        | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `powerpc64le-unknown-linux-gnu`      | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `riscv64gc-unknown-linux-gnu`        | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `s390x-unknown-linux-gnu`            | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
+| `sparc64-unknown-linux-gnu`          | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
 | `sparcv9-sun-solaris`                | 1.22.7 | 8.4.0   | ✓   | N/A   |       |
-| `thumbv6m-none-eabi` [4]             | 2.2.0  | 4.9.3   |     | N/A   |       |
-| `thumbv7em-none-eabi` [4]            | 2.2.0  | 4.9.3   |     | N/A   |       |
-| `thumbv7em-none-eabihf` [4]          | 2.2.0  | 4.9.3   |     | N/A   |       |
-| `thumbv7m-none-eabi` [4]             | 2.2.0  | 4.9.3   |     | N/A   |       |
+| `thumbv6m-none-eabi` [4]             | 3.3.0  | 9.2.1   |     | N/A   |       |
+| `thumbv7em-none-eabi` [4]            | 3.3.0  | 9.2.1   |     | N/A   |       |
+| `thumbv7em-none-eabihf` [4]          | 3.3.0  | 9.2.1   |     | N/A   |       |
+| `thumbv7m-none-eabi` [4]             | 3.3.0  | 9.2.1   |     | N/A   |       |
 | `thumbv7neon-linux-androideabi` [1]  | 9.0.8  | 9.0.8   | ✓   | 6.1.0 |   ✓    |
-| `thumbv7neon-unknown-linux-gnueabihf`| 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
+| `thumbv7neon-unknown-linux-gnueabihf`| 2.31   | 9.4.0   | ✓   | N/A   |   ✓    |
 | `wasm32-unknown-emscripten` [6]        | 3.1.14 | 15.0.0  | ✓   | N/A   |   ✓    |
 | `x86_64-linux-android` [1]           | 9.0.8  | 9.0.8   | ✓   | 6.1.0 |   ✓    |
-| `x86_64-pc-windows-gnu`              | N/A    | 7.3     | ✓   | N/A   |   ✓    |
+| `x86_64-pc-windows-gnu`              | N/A    | 9.3     | ✓   | N/A   |   ✓    |
 | `x86_64-sun-solaris`                 | 1.22.7 | 8.4.0   | ✓   | N/A   |       |
 | `x86_64-unknown-freebsd`             | 1.5    | 6.4.0   | ✓   | N/A   |       |
-| `x86_64-unknown-dragonfly` [2] [3]   | 6.0.1  | 5.3.0   | ✓   | N/A   |       |
+| `x86_64-unknown-dragonfly` [2] [3]   | 6.0.1  | 10.3.0  | ✓   | N/A   |       |
 | `x86_64-unknown-illumos`             | 1.20.4 | 8.4.0   | ✓   | N/A   |       |
-| `x86_64-unknown-linux-gnu`           | 2.23   | 5.4.0   | ✓   | 5.1.0 |   ✓    |
+| `x86_64-unknown-linux-gnu`           | 2.31   | 9.4.0   | ✓   | 6.1.0 |   ✓    |
 | `x86_64-unknown-linux-gnu:centos` [5]  | 2.17   | 4.8.5   | ✓   | 4.2.1 |   ✓    |
-| `x86_64-unknown-linux-musl`          | 1.1.24  | 9.2.0   | ✓   | N/A   |   ✓    |
+| `x86_64-unknown-linux-musl`          | 1.1.24 | 9.2.0   | ✓   | N/A   |   ✓    |
 | `x86_64-unknown-netbsd` [3]          | 9.2.0  | 9.4.0   | ✓   | N/A   |       |
 <!--| `asmjs-unknown-emscripten` [7]       | 3.1.14 | 15.0.0  | ✓   | N/A   |   ✓    |-->
 

docker/Dockerfile.aarch64-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.aarch64-unknown-linux-musl

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.arm-unknown-linux-gnueabi

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.arm-unknown-linux-gnueabihf

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.arm-unknown-linux-musleabi

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.arm-unknown-linux-musleabihf

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.armv5te-unknown-linux-gnueabi

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.armv5te-unknown-linux-musleabi

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.armv7-unknown-linux-gnueabi

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.armv7-unknown-linux-gnueabihf

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.armv7-unknown-linux-musleabi

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.i586-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.i586-unknown-linux-musl

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.i686-pc-windows-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.i686-unknown-freebsd

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.i686-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.i686-unknown-linux-musl

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.mips-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.mips-unknown-linux-musl

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.mips64-unknown-linux-gnuabi64

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.mips64-unknown-linux-muslabi64

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 
 COPY common.sh lib.sh /
 RUN /common.sh

docker/Dockerfile.mips64el-unknown-linux-gnuabi64

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.mips64el-unknown-linux-muslabi64

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 
 COPY common.sh lib.sh /
 RUN /common.sh

docker/Dockerfile.mipsel-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.mipsel-unknown-linux-musl

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.powerpc-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.powerpc64-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.powerpc64le-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.riscv64gc-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.s390x-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.sparc64-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.sparcv9-sun-solaris

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.thumbv6m-none-eabi

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.thumbv7em-none-eabi

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.thumbv7em-none-eabihf

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.thumbv7m-none-eabi

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.thumbv7neon-unknown-linux-gnueabihf

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.x86_64-pc-windows-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.x86_64-sun-solaris

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.x86_64-unknown-dragonfly

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.x86_64-unknown-freebsd

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.x86_64-unknown-linux-gnu

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /

docker/Dockerfile.x86_64-unknown-linux-gnu.centos

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY lib.sh /

docker/Dockerfile.x86_64-unknown-netbsd

@@ -1,4 +1,4 @@
-FROM ubuntu:16.04
+FROM ubuntu:20.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 COPY common.sh lib.sh /