bug#37765: Trivial rust 1.37.0-compiled program immediately segfaults on newest master

[Danny Milosavljevic]

$ cat b.rs
fn main() {
}
$ rustc b.rs
$ ./b
Segmentation fault
$ gdb ./b
(gdb) r
(gdb) bt
#0  0x00007ffff7fe40f8 in call_init.part () from 
/gnu/store/ahqgl4h89xqj695lgqvsaf6zh2nhy4pj-glibc-2.29/lib/ld-linux-x86-64.so.2
#1  0x00007ffff7fe428e in _dl_init () from 
/gnu/store/ahqgl4h89xqj695lgqvsaf6zh2nhy4pj-glibc-2.29/lib/ld-linux-x86-64.so.2
#2  0x00007ffff7fd624a in _dl_start_user () from 
/gnu/store/ahqgl4h89xqj695lgqvsaf6zh2nhy4pj-glibc-2.29/lib/ld-linux-x86-64.so.2
#3  0x0000000000000001 in ?? ()
#4  0x00007fffffffdfa1 in ?? ()
#5  0x0000000000000000 in ?? ()

pgpa3h9QlZG9x.pgp
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