$ make promote
dune promote
Promoting _build/default/book/classes/README.md.corrected to book/classes/README.md.
Promoting _build/default/book/compiler-frontend/README.md.corrected to book/compiler-frontend/README.md.
Error: exception Sys_error("_build/default/book/compiler-frontend/README.md.corrected: No such file or directory")
Backtrace:
Raised by primitive operation at file "stdlib.ml", line 390, characters 28-54
Called from file "src/stdune/io.ml", line 63, characters 17-37
Called from file "src/promotion.ml", line 86, characters 6-31
Called from file "map.ml", line 295, characters 20-25
Called from file "src/promotion.ml", line 93, characters 4-44
Called from file "src/promotion.ml", line 124, characters 11-41
Called from file "bin/main.ml", line 962, characters 4-422
Called from file "vendor/cmdliner/src/cmdliner_term.ml", line 27, characters 19-24
Called from file "vendor/cmdliner/src/cmdliner.ml", line 106, characters 32-39
Called from file "vendor/cmdliner/src/cmdliner.ml", line 136, characters 18-36
Called from file "vendor/cmdliner/src/cmdliner.ml", line 251, characters 22-48
Called from file "bin/main.ml", line 1219, characters 10-51

I must not segfault.  Uncertainty is the mind-killer.  Exceptions are
the little-death that brings total obliteration.  I will fully express
my cases.  Execution will pass over me and through me.  And when it
has gone past, I will unwind the stack along its path.  Where the
cases are handled there will be nothing.  Only I will remain.
make: *** [promote] Error 1
cork:book avsm$ find _build/ -name \*.corrected
_build//default/examples/code/classes-async/shapes/shapes.ml.corrected
_build//default/examples/code/classes-async/verbose_shapes.ml.corrected
_build//default/examples/code/front-end/doc.ml.corrected
_build//default/book/classes/README.md.corrected
cork:book avsm$ dune --version
1.6.3