Build error

   Compiling rusttype v0.7.7
   Compiling crossbeam v0.7.2
   Compiling crossbeam v0.4.1
   Compiling gfx_device_gl v0.16.1
   Compiling gfx v0.18.1
error[E0433]: failed to resolve: could not find `format_args` in `core`
   --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/gfx_device_gl-0.16.1/src/shade.rs:434:24
    |
434 |                 name = format!("Target{}", index);
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^ could not find `format_args` in `core`
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0433]: failed to resolve: could not find `format_args` in `core`
   --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/gfx_device_gl-0.16.1/src/shade.rs:487:30
    |
487 |             let color_name = format!("Target{}\0", i);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^ could not find `format_args` in `core`
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0433`.
error: Could not compile `gfx_device_gl`.
warning: build failed, waiting for other jobs to finish...
error: build failed
   Compiling gfx_device_gl v0.16.1
   Compiling wayland-protocols v0.21.13
error[E0433]: failed to resolve: could not find `format_args` in `core`
   --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/gfx_device_gl-0.16.1/src/shade.rs:434:24
    |
434 |                 name = format!("Target{}", index);
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^ could not find `format_args` in `core`
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error[E0433]: failed to resolve: could not find `format_args` in `core`
   --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/gfx_device_gl-0.16.1/src/shade.rs:487:30
    |
487 |             let color_name = format!("Target{}\0", i);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^ could not find `format_args` in `core`
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0433`.
error: Could not compile `gfx_device_gl`.
warning: build failed, waiting for other jobs to finish...
error: build failed
The command '/bin/sh -c . /root/.cargo/env;     cd veloren/voxygen;     cargo build;     cargo rustc' returned a non-zero code: 101
[ec2-user@ip-172-31-3-101 veloren-docker-ci]$