[INFO] cloning repository https://github.com/Sintrastes/pure-prolog-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sintrastes/pure-prolog-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSintrastes%2Fpure-prolog-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSintrastes%2Fpure-prolog-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c528eda274848e3ed19b955b0dbc2242e7ca405b
[INFO] testing Sintrastes/pure-prolog-rs against beta-2023-04-20 for beta-1.70-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSintrastes%2Fpure-prolog-rs" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sintrastes/pure-prolog-rs on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sintrastes/pure-prolog-rs
[INFO] finished tweaking git repo https://github.com/Sintrastes/pure-prolog-rs
[INFO] tweaked toml for git repo https://github.com/Sintrastes/pure-prolog-rs written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Sintrastes/pure-prolog-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mdo v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75dac09bc7aac03469e8678e3c978b1f3518ddfed16f63e2d2f744c737838812
[INFO] running `Command { std: "docker" "start" "-a" "75dac09bc7aac03469e8678e3c978b1f3518ddfed16f63e2d2f744c737838812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75dac09bc7aac03469e8678e3c978b1f3518ddfed16f63e2d2f744c737838812", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75dac09bc7aac03469e8678e3c978b1f3518ddfed16f63e2d2f744c737838812", kill_on_drop: false }`
[INFO] [stdout] 75dac09bc7aac03469e8678e3c978b1f3518ddfed16f63e2d2f744c737838812
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0725b837827046fc628e4f3dc7b0716ae50fe8d4ba230d71e6320fd9b06d4388
[INFO] running `Command { std: "docker" "start" "-a" "0725b837827046fc628e4f3dc7b0716ae50fe8d4ba230d71e6320fd9b06d4388", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling mdo v0.3.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling bedelibry-prolog-runtime-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(untagged_unions)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(once_cell)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(fn_box)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(untagged_unions)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(unsized_locals)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `unsized_locals` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(unsized_locals)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #48055 <https://github.com/rust-lang/rust/issues/48055> for more information
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(once_cell)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(fn_box)]
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `once_cell` has been stable since 1.70.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(once_cell)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `fn_box`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(fn_box)]
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `Vec<&tree::Tree<term::Goal<'_, T, V>, unifiable::Unifier<'_, V, term::Term<'_, T, V>>>>` is not an iterator
[INFO] [stdout]    --> src/interp.rs:34:21
[INFO] [stdout]     |
[INFO] [stdout] 34  |           let trees = mdo! {
[INFO] [stdout]     |  _____________________^
[INFO] [stdout] 35  | |             clause =<< program.clauses.iter();
[INFO] [stdout] 36  | |             let Clause {head: clauseHead, body: clauseBody} = freshen(varsInGoal.clone(), clause);
[INFO] [stdout] 37  | |             ret match Term::unify(&clauseHead, &t) {
[INFO] [stdout] ...   |
[INFO] [stdout] 52  | |             }
[INFO] [stdout] 53  | |         };
[INFO] [stdout]     | |_________^ `Vec<&tree::Tree<term::Goal<'_, T, V>, unifiable::Unifier<'_, V, term::Term<'_, T, V>>>>` is not an iterator; try calling `.into_iter()` or `.iter()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::iter::Iterator` is not implemented for `Vec<&tree::Tree<term::Goal<'_, T, V>, unifiable::Unifier<'_, V, term::Term<'_, T, V>>>>`
[INFO] [stdout]     = note: required for `&mut Vec<&tree::Tree<term::Goal<'_, T, V>, unifiable::Unifier<'_, V, term::Term<'_, T, V>>>>` to implement `std::iter::Iterator`
[INFO] [stdout] note: required by a bound in `mdo::iter::bind`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mdo-0.3.0/src/lib.rs:133:27
[INFO] [stdout]     |
[INFO] [stdout] 133 |     where I: Iterator, U: Iterator, F: FnMut(<I as Iterator>::Item) -> U {
[INFO] [stdout]     |                           ^^^^^^^^ required by this bound in `bind`
[INFO] [stdout]     = note: this error originates in the macro `mdo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: expected `FlatMap<Iter<'_, Clause<'_, T, V>>, &mut Vec<&Tree<Goal<'_, T, V>, Unifier<'_, V, Term<'_, T, V>>>>, [closure@lib.rs:64:18]>` to be an iterator that yields `Tree<Goal<'_, T, V>, _>`, but it yields `&mut &Tree<Goal<'_, T, V>, Unifier<'_, V, Term<'_, T, V>>>`
[INFO] [stdout]   --> src/interp.rs:57:31
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 goal.clone(), lazy_trees
[INFO] [stdout]    |                               ^^^^^^^^^^ expected `Tree<Goal<'_, T, V>, _>`, found `&mut &Tree<Goal<'_, T, V>, ...>`
[INFO] [stdout]    |
[INFO] [stdout]    = note:           expected enum `tree::Tree<term::Goal<'_, T, V>, _>`
[INFO] [stdout]            found mutable reference `&mut &tree::Tree<term::Goal<'_, T, V>, unifiable::Unifier<'_, V, term::Term<'_, T, V>>>`
[INFO] [stdout]    = note: required for the cast from `FlatMap<Iter<'_, Clause<'_, T, V>>, &mut Vec<&Tree<Goal<'_, T, V>, Unifier<'_, V, Term<'_, T, V>>>>, ...>` to the object type `dyn std::iter::Iterator<Item = tree::Tree<term::Goal<'_, T, V>, _>>`
[INFO] [stdout]    = note: the full name for the casted type has been written to '/opt/rustwide/target/debug/deps/bedelibry_prolog_runtime_rs-f738ca61c34ac8bd.long-type-14826397435243913323.txt'
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0271, E0277, E0554, E0557, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0271`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bedelibry-prolog-runtime-rs` (bin "bedelibry-prolog-runtime-rs") due to 11 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0725b837827046fc628e4f3dc7b0716ae50fe8d4ba230d71e6320fd9b06d4388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0725b837827046fc628e4f3dc7b0716ae50fe8d4ba230d71e6320fd9b06d4388", kill_on_drop: false }`
[INFO] [stdout] 0725b837827046fc628e4f3dc7b0716ae50fe8d4ba230d71e6320fd9b06d4388
