duo_test.go:26:47: conversion from int to string yields a string of one rune

[eclipseo]

Go 1.15 beta 1 on Fedora Rawhide

Testing    in: /builddir/build/BUILD/duo_api_golang-982114f7995f2fbee17bca19b206fa03e4cc4a12/_build/src
         PATH: /builddir/build/BUILD/duo_api_golang-982114f7995f2fbee17bca19b206fa03e4cc4a12/_build/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/sbin
       GOPATH: /builddir/build/BUILD/duo_api_golang-982114f7995f2fbee17bca19b206fa03e4cc4a12/_build:/usr/share/gocode
  GO111MODULE: off
      command: go test -buildmode pie -compiler gc -ldflags "-X github.com/duosecurity/duo_api_golang/version=0 -X github.com/duosecurity/duo_api_golang/version.commit=982114f7995f2fbee17bca19b206fa03e4cc4a12 -extldflags '-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld '"
      testing: github.com/duosecurity/duo_api_golang
github.com/duosecurity/duo_api_golang
# github.com/duosecurity/duo_api_golang
./duo_test.go:26:47: conversion from int to string yields a string of one rune
./duo_test.go:243:21: conversion from int to string yields a string of one rune
./duo_test.go:244:30: conversion from int to string yields a string of one rune
./duo_test.go:248:21: conversion from int to string yields a string of one rune
./duo_test.go:249:33: conversion from int to string yields a string of one rune
./duo_test.go:253:27: conversion from Duration (int64) to string yields a string of one rune
./duo_test.go:254:22: conversion from Duration (int64) to string yields a string of one rune
FAIL	github.com/duosecurity/duo_api_golang [build failed]

See golang/go#32479