build: upgrade go to 1.15.10

Pick up a patch to a compiler bug (see cockroachdb#62521).

* [ ] Adjust the Pebble tests to run in new version.
* [x] Adjust version in Docker image ([source](./builder/Dockerfile)).
* [x] Rebuild and push the Docker image (following [Basic Process](#basic-process))
* [x] Bump the version in `WORKSPACE` under `go_register_toolchains`. You may need to bump [rules_go](https://github.com/bazelbuild/rules_go/releases).
* [x] Bump the version in `builder.sh` accordingly ([source](./builder.sh#L6)).
* [ ] Bump the version in `go-version-check.sh` ([source](./go-version-check.sh)), unless bumping to a new patch release.
* [ ] Bump the go version in `go.mod`. You may also need to rerun `make vendor_rebuild` if vendoring has changed.
* [x] Bump the default installed version of Go in `bootstrap-debian.sh` ([source](./bootstrap/bootstrap-debian.sh#L40-42)).
* [x] Replace other mentions of the older version of go (grep for `golang:<old_version>` and `go<old_version>`).
* [ ] Update the `builder.dockerImage` parameter in the TeamCity [`Cockroach`](https://teamcity.cockroachdb.com/admin/editProject.html?projectId=Cockroach&tab=projectParams) and [`Internal`](https://teamcity.cockroachdb.com/admin/editProject.html?projectId=Internal&tab=projectParams) projects.
* [ ] Adjust `GO_VERSION` in the TeamCity agent image ([setup script](./packer/teamcity-agent.sh))
  and ask the Developer Infrastructure team to deploy new images.

Resolves cockroachdb#62809.

Release note (general change): Upgrade the CRDB binary to Go 1.15.10.

WORKSPACE

@@ -98,7 +98,7 @@ load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_depe
 
 go_rules_dependencies()
 
-go_register_toolchains(go_version = "1.15.6")
+go_register_toolchains(go_version = "1.15.10")
 
 # Configure nodeJS.
 load("@build_bazel_rules_nodejs//:index.bzl", "yarn_install")

build/README.md

@@ -80,7 +80,7 @@ Please copy this checklist (based on [Basic Process](#basic-process)) into the r
 back to this document and perform these steps:
 
 * [ ] Adjust the Pebble tests to run in new version.
-* [ ] Adjust version in Docker image ([source](./builder/Dockerfile#L199-L200)).
+* [ ] Adjust version in Docker image ([source](./builder/Dockerfile)).
 * [ ] Rebuild and push the Docker image (following [Basic Process](#basic-process))
 * [ ] Bump the version in `WORKSPACE` under `go_register_toolchains`. You may need to bump [rules_go](https://github.com/bazelbuild/rules_go/releases).
 * [ ] Bump the version in `builder.sh` accordingly ([source](./builder.sh#L6)).

build/bootstrap/bootstrap-debian.sh

@@ -46,9 +46,9 @@ sudo tar -C /usr -zxf /tmp/cmake.tgz && rm /tmp/cmake.tgz
 
 # Install Go.
 trap 'rm -f /tmp/go.tgz' EXIT
-curl -fsSL https://dl.google.com/go/go1.15.6.linux-amd64.tar.gz > /tmp/go.tgz
+curl -fsSL https://dl.google.com/go/go1.15.10.linux-amd64.tar.gz > /tmp/go.tgz
 sha256sum -c - <<EOF
-3918e6cc85e7eaaa6f859f1bdbaac772e7a825b0eb423c63d3ae68b21f84b844 /tmp/go.tgz
+4aa1267517df32f2bf1cc3d55dfc27d0c6b2c2b0989449c96dd19273ccca051d /tmp/go.tgz
 EOF
 sudo tar -C /usr/local -zxf /tmp/go.tgz && rm /tmp/go.tgz
 

build/builder.sh

@@ -3,7 +3,7 @@
 set -euo pipefail
 
 image=cockroachdb/builder
-version=20210205-000935
+version=20210330-194147
 
 function init() {
   docker build --tag="${image}" "$(dirname "${0}")/builder"

build/builder/Dockerfile

@@ -235,8 +235,8 @@ RUN curl -fsSL https://github.com/Kitware/CMake/releases/download/v3.17.0/cmake-
 # releases of Go will no longer be run in CI once it is changed. Consider
 # bumping the minimum allowed version of Go in /build/go-version-chech.sh.
 RUN DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends golang \
- && curl -fsSL https://storage.googleapis.com/golang/go1.15.6.src.tar.gz -o golang.tar.gz \
- && echo '890bba73c5e2b19ffb1180e385ea225059eb008eb91b694875dd86ea48675817 golang.tar.gz' | sha256sum -c - \
+ && curl -fsSL https://storage.googleapis.com/golang/go1.15.10.src.tar.gz -o golang.tar.gz \
+ && echo 'c1dbca6e0910b41d61a95bf9878f6d6e93d15d884c226b91d9d4b1113c10dd65 golang.tar.gz' | sha256sum -c - \
  && tar -C /usr/local -xzf golang.tar.gz \
  && rm golang.tar.gz \
  && cd /usr/local/go/src \

build/packer/teamcity-agent.sh

@@ -20,8 +20,6 @@ apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 0EBFCD88
 cat > /etc/apt/sources.list.d/docker.list <<EOF
 deb https://download.docker.com/linux/ubuntu bionic stable
 EOF
-# Per https://github.com/golang/go/wiki/Ubuntu
-add-apt-repository ppa:longsleep/golang-backports
 # Git 2.7, which ships with Xenial, has a bug where submodule metadata sometimes
 # uses absolute paths instead of relative paths, which means the affected
 # submodules cannot be mounted in Docker containers. Use the latest version of
@@ -32,25 +30,26 @@ apt-get update --yes
 # Install the sudo version patched for CVE-2021-3156
 apt-get install --yes sudo
 
-# Install the necessary dependencies. Keep this list small!
-GO_VERSION=1.15
-
 apt-get install --yes \
+  curl \
   docker-ce \
   docker-compose \
   gnome-keyring \
   gnupg2 \
   git \
-  golang-${GO_VERSION}-go \
   openjdk-11-jre-headless \
   pass \
   unzip
 
-# golang-X.Y-go does not install system wide symlinks, it's only done by the
-# golang-go package which points to the latest version. Explicitly symlink the
-# pinned version to /usr/bin.
-for f in go gofm; do
-    ln -s /usr/lib/go-${GO_VERSION}/bin/$f /usr/bin
+curl -fsSL https://dl.google.com/go/go1.15.10.linux-amd64.tar.gz > /tmp/go.tgz
+sha256sum -c - <<EOF
+4aa1267517df32f2bf1cc3d55dfc27d0c6b2c2b0989449c96dd19273ccca051d /tmp/go.tgz
+EOF
+tar -C /usr/local -zxf /tmp/go.tgz && rm /tmp/go.tgz
+
+# Explicitly symlink the pinned version to /usr/bin.
+for f in go gofmt; do
+    ln -s /usr/local/go/bin/$f /usr/bin
 done
 
 # Installing gnome-keyring prevents the error described in