[REG 5.9.1->5.10] "make install INSTALL_ROOT=..." fails

++ strace -f -s 512 -o /tmp/install.log make -j 1 INSTALL_ROOT=/tmp/e2/root install
cd qtbase/ && ( test -e Makefile || /tmp/e2/build/build/qtbase/bin/qmake -o Makefile /tmp/e2/build/qt-everywhere-src-5.10.0-alpha/qtbase/qtbase.pro ) && make -f Makefile install
make[1]: Entering directory '/tmp/e2/build/build/qtbase'
cd src/ && ( test -e Makefile || /tmp/e2/build/build/qtbase/bin/qmake -o Makefile /tmp/e2/build/qt-everywhere-src-5.10.0-alpha/qtbase/src/src.pro ) && make -f Makefile install
make[2]: Entering directory '/tmp/e2/build/build/qtbase/src'
cd corelib/ && ( test -e Makefile.qtzlib || /tmp/e2/build/build/qtbase/bin/qmake -o Makefile.qtzlib /tmp/e2/build/qt-everywhere-src-5.10.0-alpha/qtbase/src/corelib/qtzlib.pro ) && make -f Makefile.qtzlib install
make[3]: Entering directory '/tmp/e2/build/build/qtbase/src/corelib'
/tmp/e2/build/build/qtbase/bin/qmake -install qinstall /tmp/e2/build/qt-everywhere-src-5.10.0-alpha/qtbase/src/3rdparty/zlib/src/zconf.h /tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h
Error copying /tmp/e2/build/qt-everywhere-src-5.10.0-alpha/qtbase/src/3rdparty/zlib/src/zconf.h to /tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h: Cannot create /tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h for output

22786 lstat("/tmp/e2/build/qt-everywhere-src-5.10.0-alpha/qtbase/src/3rdparty/zlib/src/zconf.h", {st_mode=S_IFREG|0644, st_size=16432, ...}) = 0
22786 lstat("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h", 0x7ffc6fbe8150) = -1 ENOENT (No such file or directory)
22786 mkdir("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib", 0777) = -1 EEXIST (File exists)
22786 stat("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib", {st_mode=S_IFDIR|0755, st_size=40, ...}) = 0
22786 access("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h", F_OK) = -1 ENOENT (No such file or directory)
22786 open("/tmp/e2/build/qt-everywhere-src-5.10.0-alpha/qtbase/src/3rdparty/zlib/src/zconf.h", O_RDONLY|O_CLOEXEC) = 3
22786 fstat(3, {st_mode=S_IFREG|0644, st_size=16432, ...}) = 0
22786 access("/proc/version", F_OK)     = -1 ENOENT (No such file or directory)
22786 open("/dev/urandom", O_RDONLY|O_CLOEXEC) = 4
22786 read(4, "\2166-\300", 4)          = 4
22786 read(4, "f\334w\365", 4)          = 4
22786 open("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/qt_temp.rZFAqh", O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC, 0600) = 5
22786 fstat(5, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
22786 lstat("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/qt_temp.rZFAqh", {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
22786 ioctl(5, BTRFS_IOC_CLONE, 0x3)    = -1 ENOTTY (Inappropriate ioctl for device)
22786 sendfile(5, 3, NULL, 16432)       = 16432
22786 lseek(5, 0, SEEK_SET)             = 0
22786 close(5)                          = 0
22786 renameat2(AT_FDCWD, "/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/qt_temp.rZFAqh", AT_FDCWD, "/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h", 0x1 /* RENAME_?? */) = -1 EINVAL (Invalid argument)
22786 close(3)                          = 0
22786 unlink("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/qt_temp.rZFAqh") = 0
22786 write(2, "Error copying /tmp/e2/build/qt-everywhere-src-5.10.0-alpha/qtbase/src/3rdparty/zlib/src/zconf.h to /tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h: Cannot create /tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h for output\n", 263) = 263
22786 close(4)                          = 0
22786 exit_group(3)                     = ?

1943  unlink("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h") = -1 ENOENT (No such file or directory)
1943  mkdir("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib", 0777) = -1 EEXIST (File exists)
1943  stat("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib", {st_mode=S_IFDIR|0755, st_size=40, ...}) = 0
1943  stat("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h", 0x7ffc8d3ce7e0) = -1 ENOENT (No such file or directory)
1943  open("/tmp/e2/build/qt-everywhere-opensource-src-5.9.1/qtbase/src/3rdparty/zlib/zconf.h", O_RDONLY|O_CLOEXEC) = 3
1943  fcntl(3, F_SETFD, FD_CLOEXEC)     = 0
1943  fstat(3, {st_mode=S_IFREG|0644, st_size=13539, ...}) = 0
1943  open("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/qt_temp.rhjRGj", O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC, 0600) = 4
1943  fcntl(4, F_SETFD, FD_CLOEXEC)     = 0
1943  fstat(3, {st_mode=S_IFREG|0644, st_size=13539, ...}) = 0
1943  fstat(3, {st_mode=S_IFREG|0644, st_size=13539, ...}) = 0
1943  read(3, "/* zconf.h -- configuration of the zlib compression library\n * Copyright (C) 1995-2010 Jean-loup Gailly.\n * For conditions of distribution and use, see copyright notice in zlib.h\n */\n\n/* @(#) $Id$ */\n\n#ifndef ZCONF_H\n#define ZCONF_H\n\n/* Since Qt Core must export these symbols, define Z_PREFIX to avoid clashes system zlib */\n#define Z_PREFIX\n\n/*\n * If you *really* need a unique prefix for all types and library functions,\n * compile with -DZ_PREFIX. The \"standard\" zlib should be compiled without it.\n * Even b"..., 16384) = 13539
1943  read(3, "", 2845)                 = 0
1943  fstat(4, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
1943  read(3, "", 16384)                = 0
1943  fstat(3, {st_mode=S_IFREG|0644, st_size=13539, ...}) = 0
1943  fstat(3, {st_mode=S_IFREG|0644, st_size=13539, ...}) = 0
1943  fstat(4, {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
1943  lstat("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/qt_temp.rhjRGj", {st_mode=S_IFREG|0600, st_size=0, ...}) = 0
1943  stat("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h", 0x7ffc8d3cd540) = -1 ENOENT (No such file or directory)
1943  write(4, "/* zconf.h -- configuration of the zlib compression library\n * Copyright (C) 1995-2010 Jean-loup Gailly.\n * For conditions of distribution and use, see copyright notice in zlib.h\n */\n\n/* @(#) $Id$ */\n\n#ifndef ZCONF_H\n#define ZCONF_H\n\n/* Since Qt Core must export these symbols, define Z_PREFIX to avoid clashes system zlib */\n#define Z_PREFIX\n\n/*\n * If you *really* need a unique prefix for all types and library functions,\n * compile with -DZ_PREFIX. The \"standard\" zlib should be compiled without it.\n * Even b"..., 13539) = 13539
1943  lseek(4, 0, SEEK_SET)             = 0
1943  close(4)                          = 0
1943  rename("/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/qt_temp.rhjRGj", "/tmp/e2/root/opt/emlix/test/sysroot/usr/include/qt5/QtZlib/zconf.h") = 0
1943  fstat(3, {st_mode=S_IFREG|0644, st_size=13539, ...}) = 0
1943  lstat("/tmp/e2/build/qt-everywhere-opensource-src-5.9.1/qtbase/src/3rdparty/zlib/zconf.h", {st_mode=S_IFREG|0644, st_size=13539, ...}) = 0
1943  access("/tmp/e2/build/qt-everywhere-opensource-src-5.9.1/qtbase/src/3rdparty/zlib/zconf.h", R_OK) = 0
1943  access("/tmp/e2/build/qt-everywhere-opensource-src-5.9.1/qtbase/src/3rdparty/zlib/zconf.h", W_OK) = 0
1943  access("/tmp/e2/build/qt-everywhere-opensource-src-5.9.1/qtbase/src/3rdparty/zlib/zconf.h", X_OK) = -1 EACCES (Permission denied)