Docs don't build on linux with go1.16

[jromero]

See error logs from failed build.

go: downloading github.com/bep/golibsass v0.6.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/gcsblob/gcsblob.go:63:2: missing go.sum entry for module providing package cloud.google.com/go/storage (imported by gocloud.dev/blob/gcsblob); to add:
	go get gocloud.dev/blob/gcsblob@v0.15.0
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/deploy/cloudfront.go:20:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/aws (imported by github.com/gohugoio/hugo/deploy); to add:
	go get github.com/gohugoio/hugo/deploy@v0.74.3
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/s3blob/s3blob.go:71:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/aws/awserr (imported by gocloud.dev/blob/s3blob); to add:
	go get gocloud.dev/blob/s3blob@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/s3blob/s3blob.go:72:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/aws/client (imported by gocloud.dev/blob/s3blob); to add:
	go get gocloud.dev/blob/s3blob@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/aws/aws.go:25:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/aws/credentials (imported by gocloud.dev/aws); to add:
	go get gocloud.dev/aws@v0.15.0
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/deploy/cloudfront.go:21:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/aws/session (imported by github.com/gohugoio/hugo/deploy); to add:
	go get github.com/gohugoio/hugo/deploy@v0.74.3
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/deploy/cloudfront.go:22:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/service/cloudfront (imported by github.com/gohugoio/hugo/deploy); to add:
	go get github.com/gohugoio/hugo/deploy@v0.74.3
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/s3blob/s3blob.go:73:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/service/s3 (imported by gocloud.dev/blob/s3blob); to add:
	go get gocloud.dev/blob/s3blob@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/s3blob/s3blob.go:74:2: missing go.sum entry for module providing package github.com/aws/aws-sdk-go/service/s3/s3manager (imported by gocloud.dev/blob/s3blob); to add:
	go get gocloud.dev/blob/s3blob@v0.15.0
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/commands/hugo.go:53:2: missing go.sum entry for module providing package github.com/fsnotify/fsnotify (imported by github.com/gohugoio/hugo/commands); to add:
	go get github.com/gohugoio/hugo/commands@v0.74.3
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/azureblob/azureblob.go:73:2: missing go.sum entry for module providing package github.com/google/uuid (imported by gocloud.dev/blob/azureblob); to add:
	go get gocloud.dev/blob/azureblob@v0.15.0
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/livereload/connection.go:20:2: missing go.sum entry for module providing package github.com/gorilla/websocket (imported by github.com/gohugoio/hugo/livereload); to add:
	go get github.com/gohugoio/hugo/livereload@v0.74.3
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/config/configLoader.go:23:2: missing go.sum entry for module providing package github.com/spf13/viper (imported by github.com/gohugoio/hugo/commands); to add:
	go get github.com/gohugoio/hugo/commands@v0.74.3
Error: ../../../../go/pkg/mod/github.com/yuin/goldmark-highlighting@v0.0.0-20200307114337-60d527fdb691/highlighting.go:13:2: missing go.sum entry for module providing package github.com/yuin/goldmark (imported by github.com/gohugoio/hugo/markup/goldmark); to add:
	go get github.com/gohugoio/hugo/markup/goldmark@v0.74.3
Error: ../../../../go/pkg/mod/github.com/yuin/goldmark-highlighting@v0.0.0-20200307114337-60d527fdb691/highlighting.go:14:2: missing go.sum entry for module providing package github.com/yuin/goldmark/ast (imported by github.com/gohugoio/hugo/markup/goldmark); to add:
	go get github.com/gohugoio/hugo/markup/goldmark@v0.74.3
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/markup/goldmark/convert.go:36:2: missing go.sum entry for module providing package github.com/yuin/goldmark/extension (imported by github.com/gohugoio/hugo/markup/goldmark); to add:
	go get github.com/gohugoio/hugo/markup/goldmark@v0.74.3
Error: ../../../../go/pkg/mod/github.com/yuin/goldmark-highlighting@v0.0.0-20200307114337-60d527fdb691/highlighting.go:15:2: missing go.sum entry for module providing package github.com/yuin/goldmark/parser (imported by github.com/gohugoio/hugo/markup/goldmark); to add:
	go get github.com/gohugoio/hugo/markup/goldmark@v0.74.3
Error: ../../../../go/pkg/mod/github.com/yuin/goldmark-highlighting@v0.0.0-20200307114337-60d527fdb691/highlighting.go:16:2: missing go.sum entry for module providing package github.com/yuin/goldmark/renderer (imported by github.com/gohugoio/hugo/markup/goldmark); to add:
	go get github.com/gohugoio/hugo/markup/goldmark@v0.74.3
Error: ../../../../go/pkg/mod/github.com/yuin/goldmark-highlighting@v0.0.0-20200307114337-60d527fdb691/highlighting.go:17:2: missing go.sum entry for module providing package github.com/yuin/goldmark/renderer/html (imported by github.com/gohugoio/hugo/markup/goldmark); to add:
	go get github.com/gohugoio/hugo/markup/goldmark@v0.74.3
Error: ../../../../go/pkg/mod/github.com/yuin/goldmark-highlighting@v0.0.0-20200307114337-60d527fdb691/highlighting.go:18:2: missing go.sum entry for module providing package github.com/yuin/goldmark/text (imported by github.com/gohugoio/hugo/markup/goldmark); to add:
	go get github.com/gohugoio/hugo/markup/goldmark@v0.74.3
Error: ../../../../go/pkg/mod/github.com/yuin/goldmark-highlighting@v0.0.0-20200307114337-60d527fdb691/highlighting.go:19:2: missing go.sum entry for module providing package github.com/yuin/goldmark/util (imported by github.com/gohugoio/hugo/markup/goldmark); to add:
	go get github.com/gohugoio/hugo/markup/goldmark@v0.74.3
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/internal/oc/metrics.go:21:2: missing go.sum entry for module providing package go.opencensus.io/plugin/ocgrpc (imported by gocloud.dev/internal/oc); to add:
	go get gocloud.dev/internal/oc@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/blob.go:105:2: missing go.sum entry for module providing package go.opencensus.io/stats (imported by gocloud.dev/blob); to add:
	go get gocloud.dev/blob@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/blob.go:106:2: missing go.sum entry for module providing package go.opencensus.io/stats/view (imported by gocloud.dev/blob); to add:
	go get gocloud.dev/blob@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/blob.go:107:2: missing go.sum entry for module providing package go.opencensus.io/tag (imported by gocloud.dev/blob); to add:
	go get gocloud.dev/blob@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/internal/oc/trace.go:25:2: missing go.sum entry for module providing package go.opencensus.io/trace (imported by gocloud.dev/internal/oc); to add:
	go get gocloud.dev/internal/oc@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/gcp/gcp.go:24:2: missing go.sum entry for module providing package golang.org/x/oauth2 (imported by gocloud.dev/gcp); to add:
	go get gocloud.dev/gcp@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/gcp/gcp.go:25:2: missing go.sum entry for module providing package golang.org/x/oauth2/google (imported by gocloud.dev/gcp); to add:
	go get gocloud.dev/gcp@v0.15.0
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/common/text/transform.go:20:2: missing go.sum entry for module providing package golang.org/x/text/runes (imported by github.com/gohugoio/hugo/common/text); to add:
	go get github.com/gohugoio/hugo/common/text@v0.74.3
Error: ../../../../go/pkg/mod/golang.org/x/net@v0.0.0-20201202161906-c7110b5ffcbb/idna/idna10.0.0.go:25:2: missing go.sum entry for module providing package golang.org/x/text/secure/bidirule (imported by golang.org/x/net/idna); to add:
	go get golang.org/x/net/idna@v0.0.0-20201202161906-c7110b5ffcbb
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/common/text/transform.go:21:2: missing go.sum entry for module providing package golang.org/x/text/transform (imported by github.com/spf13/afero); to add:
	go get github.com/spf13/afero@v1.2.2
Error: ../../../../go/pkg/mod/golang.org/x/net@v0.0.0-20201202161906-c7110b5ffcbb/idna/idna10.0.0.go:26:2: missing go.sum entry for module providing package golang.org/x/text/unicode/bidi (imported by golang.org/x/net/idna); to add:
	go get golang.org/x/net/idna@v0.0.0-20201202161906-c7110b5ffcbb
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/common/text/transform.go:22:2: missing go.sum entry for module providing package golang.org/x/text/unicode/norm (imported by github.com/gohugoio/hugo/deploy); to add:
	go get github.com/gohugoio/hugo/deploy@v0.74.3
Error: ../../../../go/pkg/mod/github.com/!puerkito!bio/purell@v1.1.1/purell.go:19:2: missing go.sum entry for module providing package golang.org/x/text/width (imported by github.com/PuerkitoBio/purell); to add:
	go get github.com/PuerkitoBio/purell@v1.1.1
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/internal/gcerr/gcerr.go:25:2: missing go.sum entry for module providing package golang.org/x/xerrors (imported by gocloud.dev/gcerrors); to add:
	go get gocloud.dev/gcerrors@v0.15.0
Error: ../../../../go/pkg/mod/github.com/gohugoio/hugo@v0.74.3/deploy/google.go:21:2: missing go.sum entry for module providing package google.golang.org/api/compute/v1 (imported by github.com/gohugoio/hugo/deploy); to add:
	go get github.com/gohugoio/hugo/deploy@v0.74.3
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/gcsblob/gcsblob.go:71:2: missing go.sum entry for module providing package google.golang.org/api/googleapi (imported by gocloud.dev/blob/gcsblob); to add:
	go get gocloud.dev/blob/gcsblob@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/blob/gcsblob/gcsblob.go:72:2: missing go.sum entry for module providing package google.golang.org/api/iterator (imported by gocloud.dev/blob/gcsblob); to add:
	go get gocloud.dev/blob/gcsblob@v0.15.0
Error: ../../../../go/pkg/mod/gocloud.dev@v0.15.0/internal/useragent/useragent.go:23:2: missing go.sum entry for module providing package google.golang.org/api/option (imported by gocloud.dev/blob/gcsblob); to add:
	go get gocloud.dev/blob/gcsblob@v0.15.0
make: *** [Makefile:22: install-hugo] Error 1
Error: Process completed with exit code 2.

[jromero]

The following issues on go may be related:

• cmd/go: missing sum after updating a different package golang/go#44129
• cmd/go: go1.16 default go build behavior changes seem detrimental to developer flow golang/go#44212