Drop support for Go 1.11

Closes: https://gitlab.com/gitlab-org/gitaly/issues/2076

6 files changed, 4 insertions, 20 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 12b07047b..392ce2907 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -102,10 +102,6 @@ build:go1.12:
   <<: *build_definition
   image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.12-git-2.21
 
-build:go1.11:
-  <<: *build_definition
-  image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.11-git-2.21
-
 binaries_go1.13:
   <<: *assemble_definition
   image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.13-git-2.22
@@ -114,10 +110,6 @@ binaries_go1.12:
   <<: *assemble_definition
   image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.12-git-2.21
 
-binaries_go1.11:
-  <<: *assemble_definition
-  image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.11-git-2.21
-
 test:go1.13-git-2.22-ruby-2.6:
   image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.13-git-2.22
   <<: *test_definition
@@ -130,10 +122,6 @@ test:go1.12-git-2.21-ruby-2.6:
   image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.12-git-2.21
   <<: *test_definition
 
-test:go1.11-git-2.21-ruby-2.6:
-  image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.11-git-2.21
-  <<: *test_definition
-
 test:proxy:
   <<: *test_definition
   script:
diff --git a/Dockerfile b/Dockerfile
index b2976948a..32b36f8ba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@
 # See the _support/load-cluster/docker-compose.yml for an example of how to use
 # this image
 #
-FROM registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.11-git-2.21
+FROM registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.12-git-2.22
 
 RUN mkdir -p /app/ruby
 
diff --git a/README.md b/README.md
index b999c0d4f..018c7f973 100644
--- a/README.md
+++ b/README.md
@@ -54,7 +54,7 @@ GitLab.com, read about our [observibiltiy story](doc/observibility.md)!
 Most users won't install Gitaly on its own. It is already included in
 [your GitLab installation](https://about.gitlab.com/install/).
 
-Gitaly requires Go 1.11.4 or newer and Ruby 2.5. Run `make` to download
+Gitaly requires Go 1.12.13 or newer and Ruby 2.6. Run `make` to download
 and compile Ruby dependencies, and to compile the Gitaly Go
 executable.
 
diff --git a/_support/instrumented-cluster/docker-compose.yml b/_support/instrumented-cluster/docker-compose.yml
index 1478bf7a5..51e0719ce 100644
--- a/_support/instrumented-cluster/docker-compose.yml
+++ b/_support/instrumented-cluster/docker-compose.yml
@@ -2,7 +2,7 @@ version: "2.4"
 
 services:
   gitaly1repos:
-    image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.11-git-2.18
+    image: registry.gitlab.com/gitlab-org/gitlab-build-images:ruby-2.6-golang-1.12-git-2.22
     volumes:
       - gitalydata1:/repositories
       - ./gitaly1repos/setup.sh:/setup.sh
diff --git a/proto/README.md b/proto/README.md
index 0b24bfcb7..40d93c278 100644
--- a/proto/README.md
+++ b/proto/README.md
@@ -274,7 +274,7 @@ files but not the client libraries. This check uses `git diff` to look
 for changes. Some of the code in the Go client libraries is sensitive
 to implementation details of the Go standard library (specifically,
 the output of gzip). **Use the same Go version as .gitlab-ci.yml (Go
-1.11)** when generating new client libraries for a merge request.
+1.12)** when generating new client libraries for a merge request.
 
 [DCO + License](CONTRIBUTING.md)
 
diff --git a/ruby/gitlab-shell/.gitlab-ci.yml b/ruby/gitlab-shell/.gitlab-ci.yml
index 72b886427..7ffbee0b0 100644
--- a/ruby/gitlab-shell/.gitlab-ci.yml
+++ b/ruby/gitlab-shell/.gitlab-ci.yml
@@ -82,10 +82,6 @@ go:1.10:
   <<: *go_definition
   image: golang:1.10
 
-go:1.11:
-  <<: *go_definition
-  image: golang:1.10
-
 codequality:
   image: docker:stable
   variables: