[INFO] fetching crate cribbage-core 0.1.1...
[INFO] testing cribbage-core-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate cribbage-core 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cribbage-core 0.1.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cribbage-core 0.1.1
[INFO] finished tweaking crates.io crate cribbage-core 0.1.1
[INFO] tweaked toml for crates.io crate cribbage-core 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cribbage-core 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6fb5ad44196e7245ae674c85b6072af46d6eb90d2fb836b47c582c651b67dca
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b6fb5ad44196e7245ae674c85b6072af46d6eb90d2fb836b47c582c651b67dca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6fb5ad44196e7245ae674c85b6072af46d6eb90d2fb836b47c582c651b67dca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6fb5ad44196e7245ae674c85b6072af46d6eb90d2fb836b47c582c651b67dca", kill_on_drop: false }`
[INFO] [stdout] b6fb5ad44196e7245ae674c85b6072af46d6eb90d2fb836b47c582c651b67dca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80fe7011a07b7818f0ed916b17ea6c4f3d37a1038cb96e54166dae481fafadd7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "80fe7011a07b7818f0ed916b17ea6c4f3d37a1038cb96e54166dae481fafadd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling cribbage-core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.75s
[INFO] running `Command { std: "docker" "inspect" "80fe7011a07b7818f0ed916b17ea6c4f3d37a1038cb96e54166dae481fafadd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80fe7011a07b7818f0ed916b17ea6c4f3d37a1038cb96e54166dae481fafadd7", kill_on_drop: false }`
[INFO] [stdout] 80fe7011a07b7818f0ed916b17ea6c4f3d37a1038cb96e54166dae481fafadd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c610563d7cae196b2f1d4f1abce42cb555ad9d2cdfb79d20fe8ec45b0f019bb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9c610563d7cae196b2f1d4f1abce42cb555ad9d2cdfb79d20fe8ec45b0f019bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling cribbage-core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.65s
[INFO] running `Command { std: "docker" "inspect" "9c610563d7cae196b2f1d4f1abce42cb555ad9d2cdfb79d20fe8ec45b0f019bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c610563d7cae196b2f1d4f1abce42cb555ad9d2cdfb79d20fe8ec45b0f019bb", kill_on_drop: false }`
[INFO] [stdout] 9c610563d7cae196b2f1d4f1abce42cb555ad9d2cdfb79d20fe8ec45b0f019bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b3287892b198de6fd07b5499d7cfa999a958db1a97367b2b116bc6d003f57d03
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b3287892b198de6fd07b5499d7cfa999a958db1a97367b2b116bc6d003f57d03", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cribbage_core-dff680424658ae49
[INFO] [stdout] running 14 tests
[INFO] [stdout] test board::tests::test_four_player_board ... ok
[INFO] [stdout] test board::tests::test_two_player_board ... ok
[INFO] [stdout] test deck::tests::test_new ... ok
[INFO] [stdout] test deck::tests::test_new_shuffle ... ok
[INFO] [stdout] test card::test::test_rank_to_string ... ok
[INFO] [stdout] test card::test::test_suit_to_string ... ok
[INFO] [stdout] test deck::tests::test_draw_n ... ok
[INFO] [stdout] test deck::tests::test_shuffle ... ok
[INFO] [stdout] test pegging::test::test_is_run ... ok
[INFO] [stdout] test deck::tests::test_draw ... ok
[INFO] [stdout] test board::tests::test_three_player_board ... ok
[INFO] [stderr] 
[INFO] [stderr] thread 'card::test::test_card_from_str' has overflowed its stack
[INFO] [stderr] fatal runtime error: stack overflow
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/cribbage_core-dff680424658ae49` (signal: 6, SIGABRT: process abort signal)
[INFO] running `Command { std: "docker" "inspect" "b3287892b198de6fd07b5499d7cfa999a958db1a97367b2b116bc6d003f57d03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3287892b198de6fd07b5499d7cfa999a958db1a97367b2b116bc6d003f57d03", kill_on_drop: false }`
[INFO] [stdout] b3287892b198de6fd07b5499d7cfa999a958db1a97367b2b116bc6d003f57d03