[INFO] cloning repository https://github.com/chrisccerami/rust-blackjack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrisccerami/rust-blackjack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisccerami%2Frust-blackjack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisccerami%2Frust-blackjack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 015684c343950c31f5363c6cff47c32db608dbbf
[INFO] testing chrisccerami/rust-blackjack against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisccerami%2Frust-blackjack" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrisccerami/rust-blackjack on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chrisccerami/rust-blackjack
[INFO] finished tweaking git repo https://github.com/chrisccerami/rust-blackjack
[INFO] tweaked toml for git repo https://github.com/chrisccerami/rust-blackjack written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/chrisccerami/rust-blackjack already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand v0.3.13
[INFO] [stderr]   Downloaded libc v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04c161e68f6d66288c85b6ea451394bcbbe7106becd44022d3a4e1511e981659
[INFO] running `Command { std: "docker" "start" "-a" "04c161e68f6d66288c85b6ea451394bcbbe7106becd44022d3a4e1511e981659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04c161e68f6d66288c85b6ea451394bcbbe7106becd44022d3a4e1511e981659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04c161e68f6d66288c85b6ea451394bcbbe7106becd44022d3a4e1511e981659", kill_on_drop: false }`
[INFO] [stdout] 04c161e68f6d66288c85b6ea451394bcbbe7106becd44022d3a4e1511e981659
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a283339c36f17c01e36bcd57b01c93325c26d780d691258db2d6bb815e477ea
[INFO] running `Command { std: "docker" "start" "-a" "4a283339c36f17c01e36bcd57b01c93325c26d780d691258db2d6bb815e477ea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi v0.2.5
[INFO] [stderr]    Compiling libc v0.2.5
[INFO] [stderr]    Compiling advapi32-sys v0.1.2
[INFO] [stderr]    Compiling rand v0.3.13
[INFO] [stderr]    Compiling blackjack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/blackjack/game.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         &self.deck.shuffle();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.88s
[INFO] running `Command { std: "docker" "inspect" "4a283339c36f17c01e36bcd57b01c93325c26d780d691258db2d6bb815e477ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a283339c36f17c01e36bcd57b01c93325c26d780d691258db2d6bb815e477ea", kill_on_drop: false }`
[INFO] [stdout] 4a283339c36f17c01e36bcd57b01c93325c26d780d691258db2d6bb815e477ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f833f9dc22729f3363f1b29df32285e7ce19e66c78fdb68e0ba665caa7d8fa4
[INFO] running `Command { std: "docker" "start" "-a" "9f833f9dc22729f3363f1b29df32285e7ce19e66c78fdb68e0ba665caa7d8fa4", kill_on_drop: false }`
[INFO] [stderr]    Compiling blackjack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/blackjack/game.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         &self.deck.shuffle();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "9f833f9dc22729f3363f1b29df32285e7ce19e66c78fdb68e0ba665caa7d8fa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f833f9dc22729f3363f1b29df32285e7ce19e66c78fdb68e0ba665caa7d8fa4", kill_on_drop: false }`
[INFO] [stdout] 9f833f9dc22729f3363f1b29df32285e7ce19e66c78fdb68e0ba665caa7d8fa4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 34ff2d97099fb10c9eb15e264e5b7bd8b8c0a445b10f2db842ff598fcd7041bc
[INFO] running `Command { std: "docker" "start" "-a" "34ff2d97099fb10c9eb15e264e5b7bd8b8c0a445b10f2db842ff598fcd7041bc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/blackjack/game.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         &self.deck.shuffle();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `blackjack` (bin "blackjack" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.36s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/blackjack-4513c714f3585e85)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test blackjack::card::test_name ... ok
[INFO] [stdout] test blackjack::deck::test_shuffle ... ok
[INFO] [stdout] test blackjack::card::test_score_for_face_card ... ok
[INFO] [stdout] test blackjack::game::test_deal ... ok
[INFO] [stdout] test blackjack::card::test_score_for_numbers ... ok
[INFO] [stdout] test blackjack::deck::test_draw_card ... ok
[INFO] [stdout] test blackjack::player::test_score ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "34ff2d97099fb10c9eb15e264e5b7bd8b8c0a445b10f2db842ff598fcd7041bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34ff2d97099fb10c9eb15e264e5b7bd8b8c0a445b10f2db842ff598fcd7041bc", kill_on_drop: false }`
[INFO] [stdout] 34ff2d97099fb10c9eb15e264e5b7bd8b8c0a445b10f2db842ff598fcd7041bc