run.dlang.io: failure to pass some command line options for "all dmd compilers"

[rainers]

Some compiler options don't work with "all dmd compilers", e.g. -betterC or -boundscheck=off, they result in std.conv.ConvException@/home/travis/dlang/dmd-2.084.0/linux/bin64/../../src/phobos/std/conv.d(2110): Can't parse string: bool should be case-insensitive 'true' or 'false'

[wilzbach]

That's probably because a different Docker image is used for this: https://github.com/dlang-tour/core-dreg