Jacobian warning suggests using deprecated increment_log_prob()

[bgoodri]

Summary:

Jacobian warning suggests using deprecated increment_log_prob(). It should suggest target +=

Description:

Jacobian warning suggests using deprecated increment_log_prob(). It should suggest target +=

Reproducible Steps:

Parse

parameters {
  real<lower=0> y;
}
model {
  sqrt(y) ~ gamma(0.001, 0.001);
}

Current Output:

DIAGNOSTIC(S) FROM PARSER:
Warning (non-fatal):
Left-hand side of sampling statement (~) may contain a non-linear transform of a parameter or local variable.
If so, you need to call increment_log_prob() with the log absolute determinant of the Jacobian of the transform.
Left-hand-side of sampling statement:
    sqrt(y) ~ gamma(...)

Expected Output:

DIAGNOSTIC(S) FROM PARSER:
Warning (non-fatal):
Left-hand side of sampling statement (~) may contain a non-linear transform of a parameter or local variable.
If so, you need to call target += with the log absolute determinant of the Jacobian of the transform.
Left-hand-side of sampling statement:
    sqrt(y) ~ gamma(...)

Additional Information:

None

Current Version:

v2.12.0

[bob-carpenter]

Thanks. I'll fix that and look for other occurrences of deprecated functions in warning messages.