[INFO] cloning repository https://github.com/Shakeeb-Ansari/Rust_Practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shakeeb-Ansari/Rust_Practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShakeeb-Ansari%2FRust_Practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShakeeb-Ansari%2FRust_Practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 44271ed09ea7715d4ccea94c35c03bc97da630d3
[INFO] testing Shakeeb-Ansari/Rust_Practice 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%2FShakeeb-Ansari%2FRust_Practice" "/workspace/builds/worker-97/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-97/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Shakeeb-Ansari/Rust_Practice 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/Shakeeb-Ansari/Rust_Practice
[INFO] finished tweaking git repo https://github.com/Shakeeb-Ansari/Rust_Practice
[INFO] tweaked toml for git repo https://github.com/Shakeeb-Ansari/Rust_Practice written to /workspace/builds/worker-97/source/Cargo.toml
[INFO] crate git repo https://github.com/Shakeeb-Ansari/Rust_Practice 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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] ff4b2d311f22112bb2e6f54fb29f2f2bd2dfe710ef79a7f7095ba9a5903b48e9
[INFO] running `Command { std: "docker" "start" "-a" "ff4b2d311f22112bb2e6f54fb29f2f2bd2dfe710ef79a7f7095ba9a5903b48e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff4b2d311f22112bb2e6f54fb29f2f2bd2dfe710ef79a7f7095ba9a5903b48e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff4b2d311f22112bb2e6f54fb29f2f2bd2dfe710ef79a7f7095ba9a5903b48e9", kill_on_drop: false }`
[INFO] [stdout] ff4b2d311f22112bb2e6f54fb29f2f2bd2dfe710ef79a7f7095ba9a5903b48e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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] e9afe30209589a9c45ce23df291d191bad68ccd5cb8300f3ec804dfa09424708
[INFO] running `Command { std: "docker" "start" "-a" "e9afe30209589a9c45ce23df291d191bad68ccd5cb8300f3ec804dfa09424708", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling Rust_Practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Currency`
[INFO] [stdout]   --> src/pmatching.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |      enum Currency {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `validity`
[INFO] [stdout]   --> src/pmatching.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |      fn validity(var: Currency) -> u8 {
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.76s
[INFO] running `Command { std: "docker" "inspect" "e9afe30209589a9c45ce23df291d191bad68ccd5cb8300f3ec804dfa09424708", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9afe30209589a9c45ce23df291d191bad68ccd5cb8300f3ec804dfa09424708", kill_on_drop: false }`
[INFO] [stdout] e9afe30209589a9c45ce23df291d191bad68ccd5cb8300f3ec804dfa09424708
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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] 82ead7f2cc43e5493f84cadb06e82fc14d4aa7501d97d9d8669228a6fe586399
[INFO] running `Command { std: "docker" "start" "-a" "82ead7f2cc43e5493f84cadb06e82fc14d4aa7501d97d9d8669228a6fe586399", kill_on_drop: false }`
[INFO] [stderr]    Compiling Rust_Practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Currency`
[INFO] [stdout]   --> src/pmatching.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |      enum Currency {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `validity`
[INFO] [stdout]   --> src/pmatching.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |      fn validity(var: Currency) -> u8 {
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "82ead7f2cc43e5493f84cadb06e82fc14d4aa7501d97d9d8669228a6fe586399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82ead7f2cc43e5493f84cadb06e82fc14d4aa7501d97d9d8669228a6fe586399", kill_on_drop: false }`
[INFO] [stdout] 82ead7f2cc43e5493f84cadb06e82fc14d4aa7501d97d9d8669228a6fe586399
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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] 2dfe5a2228386ea91154b6596d9bfeb4a12f8c43b43e489da25fb507bd8aaebd
[INFO] running `Command { std: "docker" "start" "-a" "2dfe5a2228386ea91154b6596d9bfeb4a12f8c43b43e489da25fb507bd8aaebd", kill_on_drop: false }`
[INFO] [stderr] warning: enum is never used: `Currency`
[INFO] [stderr]   --> src/pmatching.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 |      enum Currency {
[INFO] [stderr]    |           ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `validity`
[INFO] [stderr]   --> src/pmatching.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |      fn validity(var: Currency) -> u8 {
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `Rust_Practice` (bin "Rust_Practice" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.25s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/Rust_Practice-463ecbc470721a15)
[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" "2dfe5a2228386ea91154b6596d9bfeb4a12f8c43b43e489da25fb507bd8aaebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dfe5a2228386ea91154b6596d9bfeb4a12f8c43b43e489da25fb507bd8aaebd", kill_on_drop: false }`
[INFO] [stdout] 2dfe5a2228386ea91154b6596d9bfeb4a12f8c43b43e489da25fb507bd8aaebd