[INFO] fetching crate dlx 0.1.0...
[INFO] checking dlx-0.1.0 against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] extracting crate dlx 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate dlx 0.1.0 on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", 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-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d37b7c1bd46461339a345ef59b148d2c13ca209c95904bd1ab8ad84272f0f0d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1d37b7c1bd46461339a345ef59b148d2c13ca209c95904bd1ab8ad84272f0f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d37b7c1bd46461339a345ef59b148d2c13ca209c95904bd1ab8ad84272f0f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d37b7c1bd46461339a345ef59b148d2c13ca209c95904bd1ab8ad84272f0f0d", kill_on_drop: false }`
[INFO] [stdout] 1d37b7c1bd46461339a345ef59b148d2c13ca209c95904bd1ab8ad84272f0f0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5832484d567d28c6f312f3f659c98e74af5fcc3ed8b4c98b46164afa2d4f6456
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5832484d567d28c6f312f3f659c98e74af5fcc3ed8b4c98b46164afa2d4f6456", kill_on_drop: false }`
[INFO] [stderr]     Checking 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]     |                                                           ^^^^^^^^^ help: use `dyn`: `dyn Solutions`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[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]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn Solutions`
[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]     |                                                           ^^^^^^^^^ help: use `dyn`: `dyn Solutions`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[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]     |                                                            ^^^^^^^^^ help: use `dyn`: `dyn Solutions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[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]    = note: `#[warn(unused_doc_comments)]` on by default
[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 dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "5832484d567d28c6f312f3f659c98e74af5fcc3ed8b4c98b46164afa2d4f6456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5832484d567d28c6f312f3f659c98e74af5fcc3ed8b4c98b46164afa2d4f6456", kill_on_drop: false }`
[INFO] [stdout] 5832484d567d28c6f312f3f659c98e74af5fcc3ed8b4c98b46164afa2d4f6456