[INFO] cloning repository https://github.com/cambyse/cross_me_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cambyse/cross_me_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcambyse%2Fcross_me_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcambyse%2Fcross_me_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e807cb87adbeba45f63e225013818a7f25cf454a
[INFO] testing cambyse/cross_me_solver against master#b03b3a7ec92682be2917540b679478d41c95a30c for pr-137122-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcambyse%2Fcross_me_solver" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cambyse/cross_me_solver
[INFO] finished tweaking git repo https://github.com/cambyse/cross_me_solver
[INFO] tweaked toml for git repo https://github.com/cambyse/cross_me_solver written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cambyse/cross_me_solver on toolchain b03b3a7ec92682be2917540b679478d41c95a30c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cambyse/cross_me_solver 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" "+b03b3a7ec92682be2917540b679478d41c95a30c" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de74e9213901763cda78ff4adb00f56c645e8b66cee674a3d75ecb98964d22a9
[INFO] running `Command { std: "docker" "start" "-a" "de74e9213901763cda78ff4adb00f56c645e8b66cee674a3d75ecb98964d22a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de74e9213901763cda78ff4adb00f56c645e8b66cee674a3d75ecb98964d22a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de74e9213901763cda78ff4adb00f56c645e8b66cee674a3d75ecb98964d22a9", kill_on_drop: false }`
[INFO] [stdout] de74e9213901763cda78ff4adb00f56c645e8b66cee674a3d75ecb98964d22a9
[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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bdee5e7ee1fd76df453d73e3258139f8d8afc76ffed26c74faf0e5434c881d5
[INFO] running `Command { std: "docker" "start" "-a" "1bdee5e7ee1fd76df453d73e3258139f8d8afc76ffed26c74faf0e5434c881d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling matrixmultiply v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling ndarray v0.15.3
[INFO] [stderr]    Compiling cross_me_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]  --> src/problems.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/problems.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]  --> src/problems.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/problems.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:129:55
[INFO] [stdout]     |
[INFO] [stdout] 129 |             (0, 1) => { n_filled+=1; islands.push(1); last = state[i]},
[INFO] [stdout]     |                                                       ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:130:26
[INFO] [stdout]     |
[INFO] [stdout] 130 |             (0, -1) => { last = state[i]; },
[INFO] [stdout]     |                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:132:72
[INFO] [stdout]     |
[INFO] [stdout] 132 |             (1, 1) => { n_filled +=1; *islands.last_mut().unwrap()+=1; last = state[i];},
[INFO] [stdout]     |                                                                        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:133:26
[INFO] [stdout]     |
[INFO] [stdout] 133 |             (1, -1) => { last = state[i]; },
[INFO] [stdout]     |                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:134:56
[INFO] [stdout]     |
[INFO] [stdout] 134 |             (-1, 1) => { n_filled+=1; islands.push(1); last = state[i]; },
[INFO] [stdout]     |                                                        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:136:27
[INFO] [stdout]     |
[INFO] [stdout] 136 |             (-1, -1) => { last = state[i];},
[INFO] [stdout]     |                           ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/solver.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | impl Features {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 85 |     fn new(n_filled: usize, islands: Vec<usize>, n_unknown:usize) -> Features {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ortho_state` and `ortho_features` are never read
[INFO] [stdout]    --> src/solver.rs:99:5
[INFO] [stdout]     |
[INFO] [stdout] 94  | struct Node {
[INFO] [stdout]     |        ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 99  |     ortho_state: Vec<i8>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     ortho_features: Features
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_node` is never used
[INFO] [stdout]    --> src/solver.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn print_node(node: &Node) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.89s
[INFO] running `Command { std: "docker" "inspect" "1bdee5e7ee1fd76df453d73e3258139f8d8afc76ffed26c74faf0e5434c881d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bdee5e7ee1fd76df453d73e3258139f8d8afc76ffed26c74faf0e5434c881d5", kill_on_drop: false }`
[INFO] [stdout] 1bdee5e7ee1fd76df453d73e3258139f8d8afc76ffed26c74faf0e5434c881d5
[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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08824c516e515ee5bc23cfc22a49544b6575de90e8577ce4b691ed5f7a86e947
[INFO] running `Command { std: "docker" "start" "-a" "08824c516e515ee5bc23cfc22a49544b6575de90e8577ce4b691ed5f7a86e947", kill_on_drop: false }`
[INFO] [stderr]    Compiling cross_me_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]  --> src/problems.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/problems.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]  --> src/problems.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/problems.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:129:55
[INFO] [stdout]     |
[INFO] [stdout] 129 |             (0, 1) => { n_filled+=1; islands.push(1); last = state[i]},
[INFO] [stdout]     |                                                       ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:130:26
[INFO] [stdout]     |
[INFO] [stdout] 130 |             (0, -1) => { last = state[i]; },
[INFO] [stdout]     |                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:132:72
[INFO] [stdout]     |
[INFO] [stdout] 132 |             (1, 1) => { n_filled +=1; *islands.last_mut().unwrap()+=1; last = state[i];},
[INFO] [stdout]     |                                                                        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:133:26
[INFO] [stdout]     |
[INFO] [stdout] 133 |             (1, -1) => { last = state[i]; },
[INFO] [stdout]     |                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:134:56
[INFO] [stdout]     |
[INFO] [stdout] 134 |             (-1, 1) => { n_filled+=1; islands.push(1); last = state[i]; },
[INFO] [stdout]     |                                                        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:136:27
[INFO] [stdout]     |
[INFO] [stdout] 136 |             (-1, -1) => { last = state[i];},
[INFO] [stdout]     |                           ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/solver.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | impl Features {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 85 |     fn new(n_filled: usize, islands: Vec<usize>, n_unknown:usize) -> Features {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ortho_state` and `ortho_features` are never read
[INFO] [stdout]    --> src/solver.rs:99:5
[INFO] [stdout]     |
[INFO] [stdout] 94  | struct Node {
[INFO] [stdout]     |        ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 99  |     ortho_state: Vec<i8>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     ortho_features: Features
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_node` is never used
[INFO] [stdout]    --> src/solver.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn print_node(node: &Node) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]  --> src/problems.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/problems.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]  --> src/problems.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/problems.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:129:55
[INFO] [stdout]     |
[INFO] [stdout] 129 |             (0, 1) => { n_filled+=1; islands.push(1); last = state[i]},
[INFO] [stdout]     |                                                       ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:130:26
[INFO] [stdout]     |
[INFO] [stdout] 130 |             (0, -1) => { last = state[i]; },
[INFO] [stdout]     |                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:132:72
[INFO] [stdout]     |
[INFO] [stdout] 132 |             (1, 1) => { n_filled +=1; *islands.last_mut().unwrap()+=1; last = state[i];},
[INFO] [stdout]     |                                                                        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:133:26
[INFO] [stdout]     |
[INFO] [stdout] 133 |             (1, -1) => { last = state[i]; },
[INFO] [stdout]     |                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:134:56
[INFO] [stdout]     |
[INFO] [stdout] 134 |             (-1, 1) => { n_filled+=1; islands.push(1); last = state[i]; },
[INFO] [stdout]     |                                                        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `last` is never read
[INFO] [stdout]    --> src/solver.rs:136:27
[INFO] [stdout]     |
[INFO] [stdout] 136 |             (-1, -1) => { last = state[i];},
[INFO] [stdout]     |                           ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ortho_state` and `ortho_features` are never read
[INFO] [stdout]    --> src/solver.rs:99:5
[INFO] [stdout]     |
[INFO] [stdout] 94  | struct Node {
[INFO] [stdout]     |        ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 99  |     ortho_state: Vec<i8>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     ortho_features: Features
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_node` is never used
[INFO] [stdout]    --> src/solver.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn print_node(node: &Node) {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "08824c516e515ee5bc23cfc22a49544b6575de90e8577ce4b691ed5f7a86e947", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08824c516e515ee5bc23cfc22a49544b6575de90e8577ce4b691ed5f7a86e947", kill_on_drop: false }`
[INFO] [stdout] 08824c516e515ee5bc23cfc22a49544b6575de90e8577ce4b691ed5f7a86e947
[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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e4a77d46fcc8057dfa2c2dc66fc78a5c352d0b28c95b66074028f472b83b1670
[INFO] running `Command { std: "docker" "start" "-a" "e4a77d46fcc8057dfa2c2dc66fc78a5c352d0b28c95b66074028f472b83b1670", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ndarray::prelude::*`
[INFO] [stderr]  --> src/problems.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ndarray::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Debug`
[INFO] [stderr]  --> src/problems.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::Debug;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::vec::Vec`
[INFO] [stderr]  --> src/problems.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::vec::Vec;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> src/problems.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last` is never read
[INFO] [stderr]    --> src/solver.rs:129:55
[INFO] [stderr]     |
[INFO] [stderr] 129 |             (0, 1) => { n_filled+=1; islands.push(1); last = state[i]},
[INFO] [stderr]     |                                                       ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last` is never read
[INFO] [stderr]    --> src/solver.rs:130:26
[INFO] [stderr]     |
[INFO] [stderr] 130 |             (0, -1) => { last = state[i]; },
[INFO] [stderr]     |                          ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last` is never read
[INFO] [stderr]    --> src/solver.rs:132:72
[INFO] [stderr]     |
[INFO] [stderr] 132 |             (1, 1) => { n_filled +=1; *islands.last_mut().unwrap()+=1; last = state[i];},
[INFO] [stderr]     |                                                                        ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last` is never read
[INFO] [stderr]    --> src/solver.rs:133:26
[INFO] [stderr]     |
[INFO] [stderr] 133 |             (1, -1) => { last = state[i]; },
[INFO] [stderr]     |                          ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last` is never read
[INFO] [stderr]    --> src/solver.rs:134:56
[INFO] [stderr]     |
[INFO] [stderr] 134 |             (-1, 1) => { n_filled+=1; islands.push(1); last = state[i]; },
[INFO] [stderr]     |                                                        ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last` is never read
[INFO] [stderr]    --> src/solver.rs:136:27
[INFO] [stderr]     |
[INFO] [stderr] 136 |             (-1, -1) => { last = state[i];},
[INFO] [stderr]     |                           ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/solver.rs:85:8
[INFO] [stderr]    |
[INFO] [stderr] 84 | impl Features {
[INFO] [stderr]    | ------------- associated function in this implementation
[INFO] [stderr] 85 |     fn new(n_filled: usize, islands: Vec<usize>, n_unknown:usize) -> Features {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `ortho_state` and `ortho_features` are never read
[INFO] [stderr]    --> src/solver.rs:99:5
[INFO] [stderr]     |
[INFO] [stderr] 94  | struct Node {
[INFO] [stderr]     |        ---- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 99  |     ortho_state: Vec<i8>,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |     ortho_features: Features
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `print_node` is never used
[INFO] [stderr]    --> src/solver.rs:105:4
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn print_node(node: &Node) {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `ortho_state` and `ortho_features` are never read
[INFO] [stderr]    --> src/solver.rs:99:5
[INFO] [stderr]     |
[INFO] [stderr] 94  | struct Node {
[INFO] [stderr]     |        ---- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 99  |     ortho_state: Vec<i8>,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |     ortho_features: Features
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cross_me_solver` (lib) generated 14 warnings (run `cargo fix --lib -p cross_me_solver` to apply 4 suggestions)
[INFO] [stderr] warning: `cross_me_solver` (lib test) generated 13 warnings (12 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/cross_me_solver-776d5744842a46e5)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test solver::tests::test_get_features ... ok
[INFO] [stdout] test solver::tests::test_problem_10101 ... ok
[INFO] [stdout] test solver::tests::test_problem_10100_11111 ... ok
[INFO] [stdout] test solver::tests::test_problem_11111 ... ok
[INFO] [stdout] test solver::tests::test_problem_110001_with_prefilled_board ... ok
[INFO] [stdout] test solver::tests::test_solve_simple_6x6_problem ... ok
[INFO] [stdout] test solver::tests::test_solve_simple_problem ... ok
[INFO] [stdout] test solver::tests::test_solve_medium_problem ... ok
[INFO] [stdout] test solver::tests::test_solve_medium_10x10_problem ... ok
[INFO] [stdout] test solver::tests::test_solve_2_29 ... ok
[INFO] [stdout] test solver::tests::test_solve_4_1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.53s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cross_me_solver-e18dce2059fc38aa)
[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 cross_me_solver
[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" "e4a77d46fcc8057dfa2c2dc66fc78a5c352d0b28c95b66074028f472b83b1670", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4a77d46fcc8057dfa2c2dc66fc78a5c352d0b28c95b66074028f472b83b1670", kill_on_drop: false }`
[INFO] [stdout] e4a77d46fcc8057dfa2c2dc66fc78a5c352d0b28c95b66074028f472b83b1670