Diesel cannot infer schema when table has `builder` column

[alanhdu]

When I have a table with a column named builder:

CREATE TABLE diesel_test (
    id INTEGER PRIMARY KEY,
    builder INTEGER
);

then compiling anything with infer_schema! fails with:

$ cargo check
   Compiling scratch v0.1.0 (file:///vagrant/scratch)
error[E0530]: let bindings cannot shadow unit structs
  |
  = note: this error originates in a macro outside of the current crate

error[E0530]: let bindings cannot shadow unit structs
  |
  = note: this error originates in a macro outside of the current crate

error[E0530]: let bindings cannot shadow unit structs
  |
  = note: this error originates in a macro outside of the current crate

error[E0530]: let bindings cannot shadow unit structs
  |
  = note: this error originates in a macro outside of the current crate

error: aborting due to previous error(s)

error: Could not compile `scratch`.

This is with diesel 0.13 and rust 1.17.

[sgrif]

Looking at the generated code from cargo rustc -- -Zunstable-options --pretty=expanded, I can safely say this is not a bug in Diesel. You should open a bug on the Rust language with this reproduction script: https://is.gd/hhcC15

[Eijebong]

rust-lang/rust#48934 This is now fixed :)