[INFO] fetching crate hashcons 0.1.2...
[INFO] testing hashcons-0.1.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate hashcons 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate hashcons 0.1.2 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 hashcons 0.1.2
[INFO] finished tweaking crates.io crate hashcons 0.1.2
[INFO] tweaked toml for crates.io crate hashcons 0.1.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 3c0c12aa2a10328a43a851128b36315fd40fefb566c1d8dbaad58c17cc991e4f
[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" "3c0c12aa2a10328a43a851128b36315fd40fefb566c1d8dbaad58c17cc991e4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c0c12aa2a10328a43a851128b36315fd40fefb566c1d8dbaad58c17cc991e4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c0c12aa2a10328a43a851128b36315fd40fefb566c1d8dbaad58c17cc991e4f", kill_on_drop: false }`
[INFO] [stdout] 3c0c12aa2a10328a43a851128b36315fd40fefb566c1d8dbaad58c17cc991e4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 432ea9cfc05ad1ad9275b55dd3fc0053f6d0835dc3a81f5fc6cac48f73ca1ecb
[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" "432ea9cfc05ad1ad9275b55dd3fc0053f6d0835dc3a81f5fc6cac48f73ca1ecb", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling hashcons v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.43s
[INFO] running `Command { std: "docker" "inspect" "432ea9cfc05ad1ad9275b55dd3fc0053f6d0835dc3a81f5fc6cac48f73ca1ecb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "432ea9cfc05ad1ad9275b55dd3fc0053f6d0835dc3a81f5fc6cac48f73ca1ecb", kill_on_drop: false }`
[INFO] [stdout] 432ea9cfc05ad1ad9275b55dd3fc0053f6d0835dc3a81f5fc6cac48f73ca1ecb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4d5343e20a6f82b002157ed030764f86963e7c45b94eda2d76b510cb63d0dbe0
[INFO] running `Command { std: "docker" "start" "-a" "4d5343e20a6f82b002157ed030764f86963e7c45b94eda2d76b510cb63d0dbe0", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashcons v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "4d5343e20a6f82b002157ed030764f86963e7c45b94eda2d76b510cb63d0dbe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5343e20a6f82b002157ed030764f86963e7c45b94eda2d76b510cb63d0dbe0", kill_on_drop: false }`
[INFO] [stdout] 4d5343e20a6f82b002157ed030764f86963e7c45b94eda2d76b510cb63d0dbe0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0ccc89360dcb3ed749adcd652fe3a367d5ec31fdc1946f1c70ea47e2cdeca381
[INFO] running `Command { std: "docker" "start" "-a" "0ccc89360dcb3ed749adcd652fe3a367d5ec31fdc1946f1c70ea47e2cdeca381", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/hashcons-6c5954cbe8964c79
[INFO] [stdout] running 3 tests
[INFO] [stdout] test merkle::list_example::test_elim_forms ... ok
[INFO] [stderr]    Doc-tests hashcons
[INFO] [stdout] test merkle::list_example::test_intro_forms ... ok
[INFO] [stdout] test merkle::list_example::test_serde ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0ccc89360dcb3ed749adcd652fe3a367d5ec31fdc1946f1c70ea47e2cdeca381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ccc89360dcb3ed749adcd652fe3a367d5ec31fdc1946f1c70ea47e2cdeca381", kill_on_drop: false }`
[INFO] [stdout] 0ccc89360dcb3ed749adcd652fe3a367d5ec31fdc1946f1c70ea47e2cdeca381