; Symbol "LAYOUT-INFO" not found in the SB-KERNEL package.

[lispnik]

[package prepl].............
; 
; caught ERROR:
;   READ error during COMPILE-FILE:
;   
;     Symbol "LAYOUT-INFO" not found in the SB-KERNEL package.
;   
;       Line: 765, Column: 43, File-Position: 28261
;   
;       Stream: #<SB-INT:FORM-TRACKING-STREAM for "file /home/mkennedy/Quicklisp/local-projects/prepl/inspect.lisp" {10064099F3}>
; Debugger entered on #<UIOP/LISP-BUILD:COMPILE-FILE-ERROR {1005F25EA3}>
[1] CL-USER> 

[lispnik]

I think I've seen this in other recent SBCL. I ran into it on SBCL 2.1.6 on CentOS 7 x86_64 here though.

$ sbcl
This is SBCL 2.1.6, an implementation of ANSI Common Lisp.
More information about SBCL is available at <http://www.sbcl.org/>.

SBCL is free software, provided as is, with absolutely no warranty.
It is mostly in the public domain; some portions are provided under
BSD-style licenses.  See the CREDITS and COPYING files in the
distribution for more information.
* (lisp-implementation-version)
"2.1.6"
* (lisp-implementation-type)
"SBCL"
* (machine-type)
"X86-64"
*