[INFO] cloning repository https://github.com/conundrumer/crossword
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/conundrumer/crossword" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconundrumer%2Fcrossword", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconundrumer%2Fcrossword'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cec0ee1cc7277c14c4afeb48fc9488b7fa941ab3
[INFO] testing conundrumer/crossword 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%2Fconundrumer%2Fcrossword" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/conundrumer/crossword 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/conundrumer/crossword
[INFO] finished tweaking git repo https://github.com/conundrumer/crossword
[INFO] tweaked toml for git repo https://github.com/conundrumer/crossword written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/conundrumer/crossword 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f609f917fde4c6fa488cfe7f9fa8f5951f505efccf9f53b2e896403829d8ed32
[INFO] running `Command { std: "docker" "start" "-a" "f609f917fde4c6fa488cfe7f9fa8f5951f505efccf9f53b2e896403829d8ed32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f609f917fde4c6fa488cfe7f9fa8f5951f505efccf9f53b2e896403829d8ed32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f609f917fde4c6fa488cfe7f9fa8f5951f505efccf9f53b2e896403829d8ed32", kill_on_drop: false }`
[INFO] [stdout] f609f917fde4c6fa488cfe7f9fa8f5951f505efccf9f53b2e896403829d8ed32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9463d8a4a2728f7050b6a24d4b099ee671461a9151aa8823c3d579381066460e
[INFO] running `Command { std: "docker" "start" "-a" "9463d8a4a2728f7050b6a24d4b099ee671461a9151aa8823c3d579381066460e", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossword v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `conservative_impl_trait` has been stable since `1.26.0` and no longer requires an attribute to enable
[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(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/grid.rs:25:21
[INFO] [stdout]    |
[INFO] [stdout] 25 |         vec![Empty; ((bb.width() as usize) * (bb.height() as usize))]
[INFO] [stdout]    |                     ^                                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 25 -         vec![Empty; ((bb.width() as usize) * (bb.height() as usize))]
[INFO] [stdout] 25 +         vec![Empty; (bb.width() as usize) * (bb.height() as usize)]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_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:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generate.rs:41:38
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter<'b>(&'b self) -> Box<Iterator<Item=Crossword> + 'b> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn iter<'b>(&'b self) -> Box<dyn Iterator<Item=Crossword> + 'b> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generate.rs:46:62
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn multi_iter<'b>(&'b self, num_iters: usize) -> Box<Iterator<Item=Crossword> + 'b> {
[INFO] [stdout]    |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn multi_iter<'b>(&'b self, num_iters: usize) -> Box<dyn Iterator<Item=Crossword> + 'b> {
[INFO] [stdout]    |                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generate.rs:78:112
[INFO] [stdout]    |
[INFO] [stdout] 78 | ...didates: Rc<Vec<usize>>, seed: u64) -> Box<Iterator<Item=(Crossword, Rc<Vec<usize>>)> + 'b> {
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn from_word_vec_partial<'b>(&'b self, crossword: Crossword, candidates: Rc<Vec<usize>>, seed: u64) -> Box<dyn Iterator<Item=(Crossword, Rc<Vec<usize>>)> + 'b> {
[INFO] [stdout]    |                                                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/generate.rs:89:114
[INFO] [stdout]    |
[INFO] [stdout] 89 | ...word, candidates: Rc<Vec<usize>>, seed: u64) -> Box<Iterator<Item=Crossword> + 'b> {
[INFO] [stdout]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn from_word_vec_recursive<'b>(&'b self, crossword: Crossword, candidates: Rc<Vec<usize>>, seed: u64) -> Box<dyn Iterator<Item=Crossword> + 'b> {
[INFO] [stdout]    |                                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/generate.rs:100:104
[INFO] [stdout]     |
[INFO] [stdout] 100 | ...didates: Rc<Vec<usize>>, seed: u64) -> Box<Iterator<Item=(Crossword, Rc<Vec<usize>>)> + 'b> {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn from_word_vec<'b>(&'b self, crossword: Crossword, candidates: Rc<Vec<usize>>, seed: u64) -> Box<dyn Iterator<Item=(Crossword, Rc<Vec<usize>>)> + 'b> {
[INFO] [stdout]     |                                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/filter.rs:33:31
[INFO] [stdout]    |
[INFO] [stdout] 33 |                     if area > prev_area {
[INFO] [stdout]    |                               ^^^^^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               expected `&i16`, found `i16`
[INFO] [stdout]    |                               help: consider borrowing here: `&prev_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/filter.rs:34:49
[INFO] [stdout]    |
[INFO] [stdout] 34 |                         return (overlaps as i8, area)
[INFO] [stdout]    |                                                 ^^^^ expected `i16`, found `&i16`
[INFO] [stdout]    |
[INFO] [stdout] help: consider dereferencing the borrow
[INFO] [stdout]    |
[INFO] [stdout] 34 |                         return (overlaps as i8, *area)
[INFO] [stdout]    |                                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/filter.rs:57:27
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 if area > last_area {
[INFO] [stdout]    |                    ----   ^^^^^^^^^ expected `i16`, found `&i16`
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    expected because this is `i16`
[INFO] [stdout]    |
[INFO] [stdout] help: consider dereferencing the borrow
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 if area > *last_area {
[INFO] [stdout]    |                           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/filter.rs:60:27
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if area < last_area && !areas.contains(&area) {
[INFO] [stdout]    |                    ----   ^^^^^^^^^ expected `i16`, found `&i16`
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    expected because this is `i16`
[INFO] [stdout]    |
[INFO] [stdout] help: consider dereferencing the borrow
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 if area < *last_area && !areas.contains(&area) {
[INFO] [stdout]    |                           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors; 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crossword` (bin "crossword") due to 8 previous errors; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9463d8a4a2728f7050b6a24d4b099ee671461a9151aa8823c3d579381066460e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9463d8a4a2728f7050b6a24d4b099ee671461a9151aa8823c3d579381066460e", kill_on_drop: false }`
[INFO] [stdout] 9463d8a4a2728f7050b6a24d4b099ee671461a9151aa8823c3d579381066460e
