[INFO] fetching crate dlx 0.1.0...
[INFO] testing dlx-0.1.0 against 1.69.0 for beta-1.70-1
[INFO] extracting crate dlx 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate dlx 0.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dlx 0.1.0
[INFO] finished tweaking crates.io crate dlx 0.1.0
[INFO] tweaked toml for crates.io crate dlx 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42e12d332e34578d3551c5f3570bfa54daad3e4eb45ea86f11df644202edbc64
[INFO] running `Command { std: "docker" "start" "-a" "42e12d332e34578d3551c5f3570bfa54daad3e4eb45ea86f11df644202edbc64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42e12d332e34578d3551c5f3570bfa54daad3e4eb45ea86f11df644202edbc64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42e12d332e34578d3551c5f3570bfa54daad3e4eb45ea86f11df644202edbc64", kill_on_drop: false }`
[INFO] [stdout] 42e12d332e34578d3551c5f3570bfa54daad3e4eb45ea86f11df644202edbc64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d32c3ae17f96d8468c100042bb2f19bd6df95146da88c3d3c8e1189b85d04981
[INFO] running `Command { std: "docker" "start" "-a" "d32c3ae17f96d8468c100042bb2f19bd6df95146da88c3d3c8e1189b85d04981", kill_on_drop: false }`
[INFO] [stderr]    Compiling dlx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:178:59
[INFO] [stdout]     |
[INFO] [stdout] 178 |     pub fn solve(&mut self, partial: Vec<Row>, sols: &mut Solutions) {
[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] 178 |     pub fn solve(&mut self, partial: Vec<Row>, sols: &mut dyn Solutions) {
[INFO] [stdout]     |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:197:60
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn solveception(&mut self, partial: &[Row], sols: &mut Solutions) {
[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] 197 |     fn solveception(&mut self, partial: &[Row], sols: &mut dyn Solutions) {
[INFO] [stdout]     |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "d32c3ae17f96d8468c100042bb2f19bd6df95146da88c3d3c8e1189b85d04981", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d32c3ae17f96d8468c100042bb2f19bd6df95146da88c3d3c8e1189b85d04981", kill_on_drop: false }`
[INFO] [stdout] d32c3ae17f96d8468c100042bb2f19bd6df95146da88c3d3c8e1189b85d04981
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.69.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79b27ef3e66257f4b339d803a9e0a51417b145b4aec57023228e52abbabfed21
[INFO] running `Command { std: "docker" "start" "-a" "79b27ef3e66257f4b339d803a9e0a51417b145b4aec57023228e52abbabfed21", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:178:59
[INFO] [stdout]     |
[INFO] [stdout] 178 |     pub fn solve(&mut self, partial: Vec<Row>, sols: &mut Solutions) {
[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] 178 |     pub fn solve(&mut self, partial: Vec<Row>, sols: &mut dyn Solutions) {
[INFO] [stdout]     |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:197:60
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn solveception(&mut self, partial: &[Row], sols: &mut Solutions) {
[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] 197 |     fn solveception(&mut self, partial: &[Row], sols: &mut dyn Solutions) {
[INFO] [stdout]     |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dlx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> examples/sudoku.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 | /         /// Convert the rows from the exact cover matrix into a
[INFO] [stdout] 92 | |         /// standard sudoku grid.
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout] 93 |           let mut grid = vec![b'0'; SIZE_SQ];
[INFO] [stdout]    |           ----------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:178:59
[INFO] [stdout]     |
[INFO] [stdout] 178 |     pub fn solve(&mut self, partial: Vec<Row>, sols: &mut Solutions) {
[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] 178 |     pub fn solve(&mut self, partial: Vec<Row>, sols: &mut dyn Solutions) {
[INFO] [stdout]     |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:197:60
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn solveception(&mut self, partial: &[Row], sols: &mut Solutions) {
[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] 197 |     fn solveception(&mut self, partial: &[Row], sols: &mut dyn Solutions) {
[INFO] [stdout]     |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "79b27ef3e66257f4b339d803a9e0a51417b145b4aec57023228e52abbabfed21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79b27ef3e66257f4b339d803a9e0a51417b145b4aec57023228e52abbabfed21", kill_on_drop: false }`
[INFO] [stdout] 79b27ef3e66257f4b339d803a9e0a51417b145b4aec57023228e52abbabfed21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.69.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d806b3967dba9213edb4c7f24463cefcaea342748558dff7b49f62e2a882fe65
[INFO] running `Command { std: "docker" "start" "-a" "d806b3967dba9213edb4c7f24463cefcaea342748558dff7b49f62e2a882fe65", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:178:59
[INFO] [stderr]     |
[INFO] [stderr] 178 |     pub fn solve(&mut self, partial: Vec<Row>, sols: &mut Solutions) {
[INFO] [stderr]     |                                                           ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 178 |     pub fn solve(&mut self, partial: Vec<Row>, sols: &mut dyn Solutions) {
[INFO] [stderr]     |                                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:197:60
[INFO] [stderr]     |
[INFO] [stderr] 197 |     fn solveception(&mut self, partial: &[Row], sols: &mut Solutions) {
[INFO] [stderr]     |                                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 197 |     fn solveception(&mut self, partial: &[Row], sols: &mut dyn Solutions) {
[INFO] [stderr]     |                                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: `dlx` (lib) generated 2 warnings (run `cargo fix --lib -p dlx` to apply 2 suggestions)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> examples/sudoku.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 | /         /// Convert the rows from the exact cover matrix into a
[INFO] [stderr] 92 | |         /// standard sudoku grid.
[INFO] [stderr]    | |_________________________________^
[INFO] [stderr] 93 |           let mut grid = vec![b'0'; SIZE_SQ];
[INFO] [stderr]    |           ----------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `dlx` (example "sudoku") generated 1 warning
[INFO] [stderr] warning: `dlx` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/dlx-9361a354ea573e72)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dlx
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d806b3967dba9213edb4c7f24463cefcaea342748558dff7b49f62e2a882fe65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d806b3967dba9213edb4c7f24463cefcaea342748558dff7b49f62e2a882fe65", kill_on_drop: false }`
[INFO] [stdout] d806b3967dba9213edb4c7f24463cefcaea342748558dff7b49f62e2a882fe65
