returns `nil`. (It now returns a pointer to a zero-valued object, like the real
  clients do.) This will break some downstream unit tests that were testing
  `result == nil` rather than `err != nil`, and in some cases may expose bugs

- Azure: check the nil error before invoke err.Error() ([#96623](https://github.com/kubernetes/kubernetes/pull/96623), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]

pkg crypto/tls, method (*CertificateVerificationError) Unwrap() error #48152
pkg crypto/tls, type CertificateVerificationError struct #48152
pkg crypto/tls, type CertificateVerificationError struct, Err error #48152
pkg crypto/tls, type CertificateVerificationError struct, UnverifiedCertificates []*x509.Certificate #48152
pkg crypto/x509, func SetFallbackRoots(*CertPool) #43958
pkg debug/elf, const R_LARCH_32_PCREL = 99 #54222

pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Debug(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Emerg(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Err(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Info(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Notice(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Warning(string) error

- Failed to provision volume with StorageClass "azurefile-premium": failed to create share andy-mg1121-dynamic-pvc-1a7b2813-d1b7-11e8-9e96-000d3a03e16b in account f7228f99bcde411e8ba4900: failed to create file share, err: storage: service returned error: StatusCode=400, ErrorCode=InvalidHeaderValue, ErrorMessage=The value for one of the HTTP headers is not in the correct format. ([#69718](https://github.com/kubernetes/kubernetes/pull/69718), [@andyzhangx](https://g...

  cm.NodeAllocatableRoot(s.CgroupRoot, s.CgroupDriver)
  
  kubeDeps.CAdvisorInterface, err = cadvisor.New(imageFsInfoProvider, s.RootDirectory, cgroupRoots, cadvisor.UsingLegacyCadvisorStats(s.ContainerRuntime, s.RemoteRuntimeEndpoint))

pkg log/syslog (freebsd-arm64), method (*Writer) Debug(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Emerg(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Err(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Info(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Notice(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Warning(string) error

- Use errors.Is() to handle err returned by LookPath() ([#122600](https://github.com/kubernetes/kubernetes/pull/122600), [@lzhecheng](https://github.com/lzhecheng)) [SIG Cloud Provider]

pkg bufio, func ScanWords([]uint8, bool) (int, []uint8, error)
pkg bufio, method (*Reader) WriteTo(io.Writer) (int64, error)
pkg bufio, method (*Scanner) Bytes() []uint8
pkg bufio, method (*Scanner) Err() error
pkg bufio, method (*Scanner) Scan() bool
pkg bufio, method (*Scanner) Split(SplitFunc)
pkg bufio, method (*Scanner) Text() string
pkg bufio, method (*Writer) ReadFrom(io.Reader) (int64, error)