nightly D is broken

```
Installing compilers/d/nightly/dmd dmd2-nightly
2021-07-17 12:58:09,691 lib.installation INFO Fetching https://dlang.org/install.sh (37302 bytes)
2021-07-17 12:58:09,722 lib.installation INFO 100% of https://dlang.org/install.sh
2021-07-17 12:58:09,722 lib.installation INFO compilers/d/nightly/dmd dmd2-nightly: https://dlang.org/install.sh -> install.sh
2021-07-17 12:58:09,722 lib.installation INFO Staging with bash -c mkdir dmd2-nightly
cd dmd2-nightly
chmod +x ../install.sh
# Download and unpack into current directory
../install.sh install dmd-nightly -a -p $(pwd)
# Rename the downloaded package directory to a constant name
mv dmd-master-* dmd2
# Make directory readable for other users too
chmod +rx dmd2
/opt/compiler-explorer/staging/dmd2-nightly/dmd-nightly/activate.fish
mv: cannot stat 'dmd-master-*': No such file or directory
chmod: cannot access 'dmd2': No such file or directory
```