[INFO] cloning repository https://github.com/IATOW/einstein-solver-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IATOW/einstein-solver-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIATOW%2Feinstein-solver-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIATOW%2Feinstein-solver-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc6fdf58866d25eaf3f140abf0f064000aaac4f0
[INFO] building IATOW/einstein-solver-rust against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIATOW%2Feinstein-solver-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IATOW/einstein-solver-rust on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/IATOW/einstein-solver-rust
[INFO] finished tweaking git repo https://github.com/IATOW/einstein-solver-rust
[INFO] tweaked toml for git repo https://github.com/IATOW/einstein-solver-rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/IATOW/einstein-solver-rust 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ab0f66d20b52451b644742d5c59e5ccb65bee48b21ce018ab882b7afc3d3b18
[INFO] running `Command { std: "docker" "start" "-a" "8ab0f66d20b52451b644742d5c59e5ccb65bee48b21ce018ab882b7afc3d3b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ab0f66d20b52451b644742d5c59e5ccb65bee48b21ce018ab882b7afc3d3b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab0f66d20b52451b644742d5c59e5ccb65bee48b21ce018ab882b7afc3d3b18", kill_on_drop: false }`
[INFO] [stdout] 8ab0f66d20b52451b644742d5c59e5ccb65bee48b21ce018ab882b7afc3d3b18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0629200e4c177a65777ecd0c49391092129cd19ae1d211e255655b9029a62a8
[INFO] running `Command { std: "docker" "start" "-a" "a0629200e4c177a65777ecd0c49391092129cd19ae1d211e255655b9029a62a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling einstein v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `it` is never read
[INFO] [stdout]   --> src/solvers/brute_force_solver.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut it = 0;
[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 `w` is never read
[INFO] [stdout]   --> src/simulator.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut w = 0_i32;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `einstein::board`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use einstein::board;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `brute_force_solver`
[INFO] [stdout]  --> src/main.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use einstein::solvers::{brute_force_solver};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "a0629200e4c177a65777ecd0c49391092129cd19ae1d211e255655b9029a62a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0629200e4c177a65777ecd0c49391092129cd19ae1d211e255655b9029a62a8", kill_on_drop: false }`
[INFO] [stdout] a0629200e4c177a65777ecd0c49391092129cd19ae1d211e255655b9029a62a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6024a0e68266e3ccd422b8d38e0d56e665d4cb88dd9d3db61a75601889ea07b
[INFO] running `Command { std: "docker" "start" "-a" "e6024a0e68266e3ccd422b8d38e0d56e665d4cb88dd9d3db61a75601889ea07b", kill_on_drop: false }`
[INFO] [stdout] warning: value assigned to `it` is never read
[INFO] [stdout]   --> src/solvers/brute_force_solver.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut it = 0;
[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] [stderr]    Compiling einstein v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `w` is never read
[INFO] [stdout]   --> src/simulator.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut w = 0_i32;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `einstein::board`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use einstein::board;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `brute_force_solver`
[INFO] [stdout]  --> src/main.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use einstein::solvers::{brute_force_solver};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `it` is never read
[INFO] [stdout]   --> src/solvers/brute_force_solver.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut it = 0;
[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 `w` is never read
[INFO] [stdout]   --> src/simulator.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut w = 0_i32;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "e6024a0e68266e3ccd422b8d38e0d56e665d4cb88dd9d3db61a75601889ea07b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6024a0e68266e3ccd422b8d38e0d56e665d4cb88dd9d3db61a75601889ea07b", kill_on_drop: false }`
[INFO] [stdout] e6024a0e68266e3ccd422b8d38e0d56e665d4cb88dd9d3db61a75601889ea07b