Printing in src/prelude.lisp sometimes breaks the interpreter

[GNUfan42]

[nix-shell:~/lambdalisp]$ echo "(format t \"test\")" >> src/prelude.lisp 

[nix-shell:~/lambdalisp]$ make run-repl
mkdir -p src/build
./tools/compile-prelude.sh > ./src/build/def-prelude.cl.tmp
mv ./src/build/def-prelude.cl.tmp ./src/build/def-prelude.cl
cd src; sbcl --script main.cl > .././bin/lambdalisp.blc.tmp
mv ./bin/lambdalisp.blc.tmp ./bin/lambdalisp.blc
( cat ./bin/lambdalisp.blc | ./bin/asc2bin; cat ) | ./bin/Blc
> test()
>   
[nix-shell:~/lambdalisp]$ git restore .

[nix-shell:~/lambdalisp]$ echo "(format t \"test1234567\")" >> src/prelude.lisp 

[nix-shell:~/lambdalisp]$ make run-repl
mkdir -p src/build
./tools/compile-prelude.sh > ./src/build/def-prelude.cl.tmp
mv ./src/build/def-prelude.cl.tmp ./src/build/def-prelude.cl
cd src; sbcl --script main.cl > .././bin/lambdalisp.blc.tmp
mv ./bin/lambdalisp.blc.tmp ./bin/lambdalisp.blc
( cat ./bin/lambdalisp.blc | ./bin/asc2bin; cat ) | ./bin/Blc
<SSS
make: *** [Makefile:38: run-repl] Error 8