Apply rustfmt

build.rs

members/braces/src/lib.rs

members/builtins/src/calc.rs

members/builtins/src/random.rs

members/builtins/src/test.rs

members/lexers/src/assignments/keys.rs

members/lexers/src/assignments/mod.rs

members/lexers/src/assignments/operator.rs

members/lexers/src/assignments/primitive.rs

members/lexers/src/lib.rs

members/ranges/src/parse.rs

members/sys/src/sys/redox/mod.rs

members/sys/src/sys/unix/mod.rs

src/lib/builtins/command_info.rs

src/lib/builtins/exec.rs

src/lib/builtins/exists.rs

src/lib/builtins/is.rs

src/lib/builtins/job_control.rs

src/lib/builtins/man_pages.rs

src/lib/builtins/mod.rs