Update syscall.

2 jobs for master in 2 minutes and 3 seconds (queued for 11 seconds)
latest
Status Name Job ID Coverage
  Build
passed build:redox #32939

00:01:00

 
  Test
failed test:redox #32940

00:01:02

 
Name Stage Failure
failed
test:redox Test
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0277`.
error: build failed
redoxer cargo: exit code: 101
Cleaning up file based variables
ERROR: Job failed: exit code 1