go: downloading github.com/prometheus/client_golang v1.11.0
go: downloading github.com/pkg/errors v0.9.1
go: downloading github.com/aws/aws-sdk-go v1.40.11
go: downloading github.com/prometheus/common/sigv4 v0.1.0
go: downloading gopkg.in/alecthomas/kingpin.v2 v2.2.6
go: downloading gopkg.in/yaml.v2 v2.4.0
go: downloading github.com/prometheus/common v0.30.0
go: downloading github.com/oklog/run v1.1.0
go: downloading github.com/go-kit/log v0.1.0
go: downloading github.com/prometheus/exporter-toolkit v0.6.1
go: downloading github.com/gofrs/uuid v4.0.0+incompatible
go: downloading github.com/matttproud/golang_protobuf_extensions v1.0.1
go: downloading github.com/cenkalti/backoff/v4 v4.1.1
go: downloading github.com/cespare/xxhash v1.1.0
go: downloading github.com/gogo/protobuf v1.3.2
go: downloading github.com/hashicorp/go-sockaddr v1.0.2
go: downloading github.com/hashicorp/memberlist v0.2.4
go: downloading github.com/oklog/ulid v1.3.1
go: downloading github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15
go: downloading github.com/go-openapi/loads v0.20.2
go: downloading github.com/shurcooL/vfsgen v0.0.0-20200824052919-0d455de96546
go: downloading github.com/go-openapi/strfmt v0.20.1
go: downloading github.com/go-openapi/runtime v0.19.29
go: downloading github.com/rs/cors v1.8.0
go: downloading github.com/go-openapi/errors v0.20.0
go: downloading github.com/go-openapi/spec v0.20.3
go: downloading github.com/go-openapi/swag v0.19.15
go: downloading github.com/jessevdk/go-flags v1.5.0
go: downloading golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985
go: downloading github.com/go-openapi/validate v0.20.2
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go: downloading github.com/go-logfmt/logfmt v0.5.0
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go: downloading golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e
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go: downloading github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529
go: downloading github.com/hashicorp/go-multierror v1.0.0
go: downloading github.com/hashicorp/go-msgpack v0.5.3
go: downloading github.com/miekg/dns v1.1.26
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go: downloading golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1
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go: downloading golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c
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go: downloading google.golang.org/protobuf v1.26.0-rc.1
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# github.com/prometheus/alertmanager/cmd/alertmanager
flag provided but not defined: -flto
usage: link [options] main.o
  -B note
    	add an ELF NT_GNU_BUILD_ID note when using ELF
  -E entry
    	set entry symbol name
  -H type
    	set header type
  -I linker
    	use linker as ELF dynamic linker
  -L directory
    	add specified directory to library path
  -R quantum
    	set address rounding quantum (default -1)
  -T address
    	set text segment address (default -1)
  -V	print version and exit
  -X definition
    	add string value definition of the form importpath.name=value
  -a	no-op (deprecated)
  -aslr
    	enable ASLR for buildmode=c-shared on windows (default true)
  -benchmark string
    	set to 'mem' or 'cpu' to enable phase benchmarking
  -benchmarkprofile base
    	emit phase profiles to base_phase.{cpu,mem}prof
  -buildid id
    	record id as Go toolchain build id
  -buildmode mode
    	set build mode
  -c	dump call graph
  -compressdwarf
    	compress DWARF if possible (default true)
  -cpuprofile file
    	write cpu profile to file
  -d	disable dynamic executable
  -debugtextsize int
    	debug text section max size
  -debugtramp int
    	debug trampolines
  -dumpdep
    	dump symbol dependency graph
  -extar string
    	archive program for buildmode=c-archive
  -extld linker
    	use linker when linking in external mode
  -extldflags flags
    	pass flags to external linker
  -f	ignore version mismatch
  -g	disable go package data checks
  -h	halt on error
  -importcfg file
    	read import configuration from file
  -installsuffix suffix
    	set package directory suffix
  -k symbol
    	set field tracking symbol
  -libgcc string
    	compiler support lib for internal linking; use "none" to disable
  -linkmode mode
    	set link mode
  -linkshared
    	link against installed Go shared libraries
  -memprofile file
    	write memory profile to file
  -memprofilerate rate
    	set runtime.MemProfileRate to rate
  -msan
    	enable MSan interface
  -n	dump symbol table
  -o file
    	write output to file
  -pluginpath string
    	full path name for plugin
  -r path
    	set the ELF dynamic linker search path to dir1:dir2:...
  -race
    	enable race detector
  -s	disable symbol table
  -strictdups int
    	sanity check duplicate symbol contents during object file reading (1=warn 2=err).
  -tmpdir directory
    	use directory for temporary files
  -v	print link trace
  -w	disable DWARF generation
==> ERROR: A failure occurred in build().
    Aborting...