[INFO] cloning repository https://github.com/SanTMK/Rust_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SanTMK/Rust_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSanTMK%2FRust_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSanTMK%2FRust_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5238926b06c338a9cb116084eff60d3272699312
[INFO] testing SanTMK/Rust_demo against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSanTMK%2FRust_demo" "/workspace/builds/worker-73/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-73/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SanTMK/Rust_demo on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SanTMK/Rust_demo
[INFO] finished tweaking git repo https://github.com/SanTMK/Rust_demo
[INFO] tweaked toml for git repo https://github.com/SanTMK/Rust_demo written to /workspace/builds/worker-73/source/Cargo.toml
[INFO] crate git repo https://github.com/SanTMK/Rust_demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0acbff88c343494a95d0b631fb9935ab5c2d10cddd0c5ea701cc1e0a5aa30fff
[INFO] running `Command { std: "docker" "start" "-a" "0acbff88c343494a95d0b631fb9935ab5c2d10cddd0c5ea701cc1e0a5aa30fff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0acbff88c343494a95d0b631fb9935ab5c2d10cddd0c5ea701cc1e0a5aa30fff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0acbff88c343494a95d0b631fb9935ab5c2d10cddd0c5ea701cc1e0a5aa30fff", kill_on_drop: false }`
[INFO] [stdout] 0acbff88c343494a95d0b631fb9935ab5c2d10cddd0c5ea701cc1e0a5aa30fff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be631b1660599989f3a7219d51169e4d3250cbbf2b2f1b4c6e7114e9b062bcb4
[INFO] running `Command { std: "docker" "start" "-a" "be631b1660599989f3a7219d51169e4d3250cbbf2b2f1b4c6e7114e9b062bcb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `file` is never read
[INFO] [stdout]   --> src/structs.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut file: char = 'z';
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rank` is never read
[INFO] [stdout]   --> src/structs.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut rank: u8 = 0;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "be631b1660599989f3a7219d51169e4d3250cbbf2b2f1b4c6e7114e9b062bcb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be631b1660599989f3a7219d51169e4d3250cbbf2b2f1b4c6e7114e9b062bcb4", kill_on_drop: false }`
[INFO] [stdout] be631b1660599989f3a7219d51169e4d3250cbbf2b2f1b4c6e7114e9b062bcb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e781653a493473dc391518094d1be2a5ce02a937b00f799f4a1fe44f0c9612a
[INFO] running `Command { std: "docker" "start" "-a" "5e781653a493473dc391518094d1be2a5ce02a937b00f799f4a1fe44f0c9612a", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `file` is never read
[INFO] [stdout]   --> src/structs.rs:18:17
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut file: char = 'z';
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rank` is never read
[INFO] [stdout]   --> src/structs.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut rank: u8 = 0;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "5e781653a493473dc391518094d1be2a5ce02a937b00f799f4a1fe44f0c9612a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e781653a493473dc391518094d1be2a5ce02a937b00f799f4a1fe44f0c9612a", kill_on_drop: false }`
[INFO] [stdout] 5e781653a493473dc391518094d1be2a5ce02a937b00f799f4a1fe44f0c9612a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6aca4f4af8b2774a932f85ba360ff08c6c75ce100dfd5f010abd51cfa1e89ff0
[INFO] running `Command { std: "docker" "start" "-a" "6aca4f4af8b2774a932f85ba360ff08c6c75ce100dfd5f010abd51cfa1e89ff0", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `file` is never read
[INFO] [stderr]   --> src/structs.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut file: char = 'z';
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `rank` is never read
[INFO] [stderr]   --> src/structs.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |         let mut rank: u8 = 0;
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `cargo_demo` (bin "cargo_demo" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cargo_demo-206c5d6165f76a94)
[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" "6aca4f4af8b2774a932f85ba360ff08c6c75ce100dfd5f010abd51cfa1e89ff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aca4f4af8b2774a932f85ba360ff08c6c75ce100dfd5f010abd51cfa1e89ff0", kill_on_drop: false }`
[INFO] [stdout] 6aca4f4af8b2774a932f85ba360ff08c6c75ce100dfd5f010abd51cfa1e89ff0