source/app.d(20,68): Error: cannot take address of local `size` in `@safe` function `main`
source/app.d(21,115): Error: cannot take address of local `format` in `@safe` function `main`
source/app.d(22,48): Error: cannot take address of local `time` in `@safe` function `main`
source/app.d(29,9): Error: `@safe` function `D main` cannot call `@system` function `std.stdio.makeGlobal!"core.stdc.stdio.stderr".makeGlobal`
/opt/dmd-safe/dmd/generated/linux/release/64/../../../../../phobos/std/stdio.d(4792,20):        `std.stdio.makeGlobal!"core.stdc.stdio.stderr".makeGlobal` is declared here
source/app.d(34,3): Error: `@safe` function `D main` cannot call `@system` function `std.stdio.makeGlobal!"core.stdc.stdio.stderr".makeGlobal`
/opt/dmd-safe/dmd/generated/linux/release/64/../../../../../phobos/std/stdio.d(4792,20):        `std.stdio.makeGlobal!"core.stdc.stdio.stderr".makeGlobal` is declared here
source/app.d(35,3): Error: `@safe` function `D main` cannot call `@system` function `std.stdio.makeGlobal!"core.stdc.stdio.stderr".makeGlobal`
/opt/dmd-safe/dmd/generated/linux/release/64/../../../../../phobos/std/stdio.d(4792,20):        `std.stdio.makeGlobal!"core.stdc.stdio.stderr".makeGlobal` is declared here
source/app.d(44,36): Error: `@safe` function `D main` cannot call `@system` function `app.findMostFrequent!(ulong[]).findMostFrequent`
source/app.d(86,6):        `app.findMostFrequent!(ulong[]).findMostFrequent` is declared here
/opt/dmd-safe/dmd/dmd-safe failed with exit code 1.