nightly regression: "overflow evaluating the requirement <Self as query_dsl::limit_dsl::LimitDsl>::Output"

[masonk]

After upgrading to the latest 1-15-2020 nightly, I can't compile diesel 1.4.3. even in a perfectly clean repo with the following Cargo.toml:

[package]
name = "diesel-test"
version = "0.1.0"
authors = ["Mason Kramer <mason@masonkramer.net>"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
diesel = "1.4.3"

This regression happened sometime between 19bd93467 2019-12-18 and 3291ae339 2020-01-15.

The error is:

error[E0275]: overflow evaluating the requirement `<Self as query_dsl::limit_dsl::LimitDsl>::Output

[masonk]

I bisected this

cargo install cargo-bisect-rustc
cargo bisect-rustc --start=2019-12-18

The first occurrence of this was today's nightly, nightly-2020-01-15.

Bisect is looking for the exact commit to rustc that causes this; I will post in the morning what it found.

[masonk]

Bisect was able to find 6d0bb91bcba33a70fae4b0c663fb4403ed78f071 as the culprit, but it's a rollup.

[humb1t]

Confirm this issue on ARM64bit compilation via nightly-2020-01-15:

overflow evaluating the requirement `<Self as query_dsl::limit_dsl::LimitDsl>::Output`

[weiznich]

As the issue guide lines say: That's not a issue on the current stable release, therefore I close this issue. Nightly is not a officially supported target for diesel, it's expected that things break there.
Please open a issue at rustc repository, as this is clearly a rustc issue.

[weiznich]

Someone else already has this reported in rust-lang/rust#68264