$ /usr/local/bin/pg_upgrade -k  -d /usr/local/pgsql/data91 -D /usr/local/pgsql/data --old-bindir=/var/tmp/pgbin.SPOsRj4D/bin --new-bindir=/usr/local/bin --check --verbose
Running in verbose mode
Performing Consistency Checks
-----------------------------
Checking cluster versions                                   ok
pg_control values:

First log file ID after reset:        0
First log file segment after reset:   2
pg_control version number:            903
Catalog version number:               201105231
Database system identifier:           6377706589830970111
Latest checkpoint's TimeLineID:       1
Latest checkpoint's NextXID:          0/1771
Latest checkpoint's NextOID:          18044
Latest checkpoint's NextMultiXactId:  1
Latest checkpoint's NextMultiOffset:  0
Latest checkpoint's oldestXID:        980
Latest checkpoint's oldestXID's DB:   1
Latest checkpoint's oldestActiveXID:  0
Maximum data alignment:               8
Database block size:                  8192
Blocks per segment of large relation: 131072
WAL block size:                       8192
Bytes per WAL segment:                16777216
Maximum length of identifiers:        64
Maximum columns in an index:          32
Maximum size of a TOAST chunk:        1996
Date/time type storage:               64-bit integers
Float4 argument passing:              by value
Float8 argument passing:              by value
Current pg_control values:

pg_control version number:            942
Catalog version number:               201510051
Database system identifier:           6377774801219888145
Latest checkpoint's TimeLineID:       1
Latest checkpoint's full_page_writes: on
Latest checkpoint's NextXID:          0/933
Latest checkpoint's NextOID:          12690
Latest checkpoint's NextMultiXactId:  1
Latest checkpoint's NextMultiOffset:  0
Latest checkpoint's oldestXID:        925
Latest checkpoint's oldestXID's DB:   1
Latest checkpoint's oldestActiveXID:  0
Latest checkpoint's oldestMultiXid:   1
Latest checkpoint's oldestMulti's DB: 1
Latest checkpoint's oldestCommitTsXid:0
Latest checkpoint's newestCommitTsXid:0
Maximum data alignment:               8
Database block size:                  8192
Blocks per segment of large relation: 131072
WAL block size:                       8192
Bytes per WAL segment:                16777216
Maximum length of identifiers:        64
Maximum columns in an index:          32
Maximum size of a TOAST chunk:        1996
Size of a large-object chunk:         2048
Date/time type storage:               64-bit integers
Float4 argument passing:              by value
Float8 argument passing:              by value
Data page checksum version:           0


Values to be changed:

First log segment after reset:        000000010000000000000002
"/var/tmp/pgbin.SPOsRj4D/bin/pg_ctl" -w -l "pg_upgrade_server.log" -D "/usr/local/pgsql/data91" -o "-p 50432 -b  -c listen_addresses='' -c unix_socket_permissions=0700 -c unix_socket_directory='/usr/local/pgsql'" start >> "pg_upgrade_server.log" 2>&1

*failure*
There were problems executing ""/var/tmp/pgbin.SPOsRj4D/bin/pg_ctl" -w -l "pg_upgrade_server.log" -D "/usr/local/pgsql/data91" -o "-p 50432 -b  -c listen_addresses='' -c unix_socket_permissions=0700 -c unix_socket_directory='/usr/local/pgsql'" start >> "pg_upgrade_server.log" 2>&1"
Consult the last few lines of "pg_upgrade_server.log" for
the probable cause of the failure.

pg_ctl failed to start the old server, or connection failed
Failure, exiting