our lazy statics are a panic hazard

[eminence]

We have several lazy statics that use .unwrap(), thus they can panic. This is poor API design and should be fixed. See #136 for an example of this.

lazy_static! {
    /// The number of clock ticks per second.
    ///
    /// This is calculated from `sysconf(_SC_CLK_TCK)`.
    static ref TICKS_PER_SECOND: i64 = {
        ticks_per_second().unwrap()
    };
    /// The version of the currently running kernel.
    ///
    /// This is a lazily constructed static.  You can also get this information via
    /// [KernelVersion::new()].
    static ref KERNEL: KernelVersion = {
        KernelVersion::current().unwrap()
    };
    /// Memory page size, in bytes.
    ///
    /// This is calculated from `sysconf(_SC_PAGESIZE)`.
    static ref PAGESIZE: i64 = {
        page_size().unwrap()
    };
}

[tiann]

Maybe unwrap_or_else to give a default version or to get it from Environment?