[INFO] cloning repository https://github.com/Cedian03/sudoku-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Cedian03/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCedian03%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCedian03%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0be8bfedb68d7291279d33388fc482d20f4560d6
[INFO] building Cedian03/sudoku-solver 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%2FCedian03%2Fsudoku-solver" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Cedian03/sudoku-solver 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/Cedian03/sudoku-solver
[INFO] finished tweaking git repo https://github.com/Cedian03/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/Cedian03/sudoku-solver written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Cedian03/sudoku-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 1210da2319e23745b826d17e760a99d13c276273e1685074b301f7e55afa2760
[INFO] running `Command { std: "docker" "start" "-a" "1210da2319e23745b826d17e760a99d13c276273e1685074b301f7e55afa2760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1210da2319e23745b826d17e760a99d13c276273e1685074b301f7e55afa2760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1210da2319e23745b826d17e760a99d13c276273e1685074b301f7e55afa2760", kill_on_drop: false }`
[INFO] [stdout] 1210da2319e23745b826d17e760a99d13c276273e1685074b301f7e55afa2760
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6d00801f9d49fb543dcda7dbf18254e69537e0e2b978796c5768fde6acdaaffc
[INFO] running `Command { std: "docker" "start" "-a" "6d00801f9d49fb543dcda7dbf18254e69537e0e2b978796c5768fde6acdaaffc", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ParseSudokuError` is never constructed
[INFO] [stdout]  --> src/main.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct ParseSudokuError;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Sudoku {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "6d00801f9d49fb543dcda7dbf18254e69537e0e2b978796c5768fde6acdaaffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d00801f9d49fb543dcda7dbf18254e69537e0e2b978796c5768fde6acdaaffc", kill_on_drop: false }`
[INFO] [stdout] 6d00801f9d49fb543dcda7dbf18254e69537e0e2b978796c5768fde6acdaaffc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 299d76c1eb3a8637ac9e20f315e93e2ab51dbd08b3e179e3dc64d1db014b0830
[INFO] running `Command { std: "docker" "start" "-a" "299d76c1eb3a8637ac9e20f315e93e2ab51dbd08b3e179e3dc64d1db014b0830", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ParseSudokuError` is never constructed
[INFO] [stdout]  --> src/main.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct ParseSudokuError;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Sudoku {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "299d76c1eb3a8637ac9e20f315e93e2ab51dbd08b3e179e3dc64d1db014b0830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "299d76c1eb3a8637ac9e20f315e93e2ab51dbd08b3e179e3dc64d1db014b0830", kill_on_drop: false }`
[INFO] [stdout] 299d76c1eb3a8637ac9e20f315e93e2ab51dbd08b3e179e3dc64d1db014b0830