ERROR: x11-drivers/nvidia-drivers-390.138-r5::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=x11-drivers/nvidia-drivers-390.138-r5::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=x11-drivers/nvidia-drivers-390.138-r5::gentoo'`.
 * The complete build log is located at '/var/calculate/tmp/portage/x11-drivers/nvidia-drivers-390.138-r5/temp/build.log'.
 * The ebuild environment file is located at '/var/calculate/tmp/portage/x11-drivers/nvidia-drivers-390.138-r5/temp/environment'.
 * Working directory: '/var/calculate/tmp/portage/x11-drivers/nvidia-drivers-390.138-r5/work/kernel'
 * S: '/var/calculate/tmp/portage/x11-drivers/nvidia-drivers-390.138-r5/work/'

 * Messages for package x11-drivers/nvidia-drivers-390.138-r5:

 * Gentoo supports kernels which are supported by NVIDIA
 * which are limited to the following kernels:
 * <sys-kernel/gentoo-sources-5.8
 * <sys-kernel/vanilla-sources-5.8
 * 
 * You are free to utilize eapply_user to provide whatever
 * support you feel is appropriate, but will not receive
 * support as a result of those changes.
 * 
 * Do not file a bug report about this.
 * 
 *   CONFIG_I2C_NVIDIA_GPU:      should not be set. But it is.
 * Please check to make sure these options are set correctly.
 * Failure to do so may cause unexpected problems.

 * Messages for package x11-drivers/nvidia-drivers-390.138-r5:

 * Gentoo supports kernels which are supported by NVIDIA
 * which are limited to the following kernels:
 * <sys-kernel/gentoo-sources-5.8
 * <sys-kernel/vanilla-sources-5.8
 * 
 * You are free to utilize eapply_user to provide whatever
 * support you feel is appropriate, but will not receive
 * support as a result of those changes.
 * 
 * Do not file a bug report about this.
 * 
 *   CONFIG_I2C_NVIDIA_GPU:      should not be set. But it is.
 * Please check to make sure these options are set correctly.
 * Failure to do so may cause unexpected problems.
 *   CONFIG_I2C_NVIDIA_GPU:      should not be set. But it is.
 * Please check to make sure these options are set correctly.
 * Failure to do so may cause unexpected problems.
 * ERROR: x11-drivers/nvidia-drivers-390.138-r5::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=x11-drivers/nvidia-drivers-390.138-r5::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=x11-drivers/nvidia-drivers-390.138-r5::gentoo'`.
 * The complete build log is located at '/var/calculate/tmp/portage/x11-drivers/nvidia-drivers-390.138-r5/temp/build.log'.
 * The ebuild environment file is located at '/var/calculate/tmp/portage/x11-drivers/nvidia-drivers-390.138-r5/temp/environment'.
 * Working directory: '/var/calculate/tmp/portage/x11-drivers/nvidia-drivers-390.138-r5/work/kernel'
 * S: '/var/calculate/tmp/portage/x11-drivers/nvidia-drivers-390.138-r5/work/'

 * GNU info directory index is up-to-date.