Remove -mod=vendor from all documentation and code

CONTRIBUTING.md

@@ -46,15 +46,12 @@ Remember, the easier it is for us to reproduce the bug, the earlier it will be
 corrected!
 
 In addition, you can compile restic with debug support by running
-`go run -mod=vendor build.go -tags debug` and instructing it to create a debug
+`go run build.go -tags debug` and instructing it to create a debug
 log by setting the environment variable `DEBUG_LOG` to a file, e.g. like this:
 
     $ export DEBUG_LOG=/tmp/restic-debug.log
     $ restic backup ~/work
 
-For Go < 1.11, you need to remove the `-mod=vendor` option from the build
-command.
-
 Please be aware that the debug log file will contain potentially sensitive
 things like file and directory names, so please either redact it before
 uploading it somewhere or post only the parts that are really relevant.

appveyor.yml

@@ -29,4 +29,4 @@ install:
   - set PATH=bin/;%PATH%
 
 build_script:
-  - go run -mod=vendor run_integration_tests.go
+  - go run run_integration_tests.go

doc/020_installation.rst

@@ -259,7 +259,7 @@ In order to build restic from source, execute the following steps:
 
     $ cd restic
 
-    $ go run -mod=vendor build.go
+    $ go run build.go
 
 You can easily cross-compile restic for all supported platforms, just
 supply the target OS and platform via the command-line options like this
@@ -267,11 +267,11 @@ supply the target OS and platform via the command-line options like this
 
 .. code-block:: console
 
-    $ go run -mod=vendor build.go --goos windows --goarch amd64
+    $ go run build.go --goos windows --goarch amd64
 
-    $ go run -mod=vendor build.go --goos freebsd --goarch 386
+    $ go run build.go --goos freebsd --goarch 386
 
-    $ go run -mod=vendor build.go --goos linux --goarch arm --goarm 6
+    $ go run build.go --goos linux --goarch arm --goarm 6
 
 The resulting binary is statically linked and does not require any
 libraries.

doc/090_participating.rst

@@ -22,9 +22,7 @@ The program can be built with debug support like this:
 
 .. code-block:: console
 
-    $ go run build.go -mod=vendor -tags debug
-
-For Go < 1.11, the option ``-mod=vendor`` needs to be removed.
+    $ go run build.go -tags debug
 
 Afterwards, extensive debug messages are written to the file in
 environment variable ``DEBUG_LOG``, e.g.:

doc/developer_information.rst

@@ -47,10 +47,10 @@ In the following example, we'll use the file ``restic-0.9.3.tar.gz`` and Go
     $ go version
     go version go1.11.1 linux/amd64
 
-    $ GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -mod=vendor -ldflags "-s -w" -tags selfupdate -o restic_linux_amd64 ./cmd/restic
+    $ GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -ldflags "-s -w" -tags selfupdate -o restic_linux_amd64 ./cmd/restic
     $ bzip2 restic_linux_amd64
 
-    $ GOOS=windows GOARCH=amd64 CGO_ENABLED=0 go build -mod=vendor -ldflags "-s -w" -tags selfupdate -o restic_windows_amd64.exe ./cmd/restic
+    $ GOOS=windows GOARCH=amd64 CGO_ENABLED=0 go build -ldflags "-s -w" -tags selfupdate -o restic_windows_amd64.exe ./cmd/restic
     $ touch --reference VERSION restic_windows_amd64.exe
     $ TZ=Europe/Berlin zip -q -X restic_windows_amd64.zip restic_windows_amd64.exe
 
@@ -105,7 +105,7 @@ The following steps are necessary to build the binaries:
         --volume "$PWD/restic-0.9.3:/restic" \
         --volume "$PWD/output:/output" \
         restic/builder \
-        go run -mod=vendor helpers/build-release-binaries/main.go --verbose
+        go run helpers/build-release-binaries/main.go --verbose
 
 Prepare a New Release
 *********************
@@ -118,6 +118,6 @@ required argument is the new version number (in `Semantic Versioning
 
 .. code::
 
-    go run -mod=vendor helpers/prepare-release/main.go 0.9.3
+    go run helpers/prepare-release/main.go 0.9.3
 
 Checks can be skipped on demand via flags, please see ``--help`` for details.

helpers/build-release-binaries/main.go

@@ -96,7 +96,6 @@ func build(sourceDir, outputDir, goos, goarch string) (filename string) {
 	outputFile := filepath.Join(outputDir, filename)
 
 	c := exec.Command("go", "build",
-		"-mod=vendor",
 		"-o", outputFile,
 		"-ldflags", "-s -w",
 		"-tags", "selfupdate",

helpers/prepare-release/main.go

@@ -345,7 +345,7 @@ func runBuild(sourceDir, outputDir, version string) {
 		"--volume", sourceDir+":/restic",
 		"--volume", outputDir+":/output",
 		"restic/builder",
-		"go", "run", "-mod=vendor", "helpers/build-release-binaries/main.go",
+		"go", "run", "helpers/build-release-binaries/main.go",
 		"--version", version)
 }