Kto krest odnazhdu budet nest',
Tot raspinaem budet vechno.

It does mean "he will be cruicified forever" This is just a poetic reduction. This phrase is suppose to be "тот распинаем <на нём, на этом кресте> будет вечно".

No, kto, boyas' za nim idti,
Sebya razdumiem trevozhit,
Pust' brosit krest sredi puti,
Pust' ichet schast'ya, esli mozhet!

This is hard...

But one, who is afraid to follow it <the voise>,
who is disturbed by regret,
he shall lay down the cross on a half-way,
he shall seek for happiness, if he can do it.

Menya v literaturu poperlo.....gibloe delo...

It means "I suddenly got a great interest in literature and I dig it... Can't tear myself away" - something like this, an arrant slang.