[INFO] fetching crate merkle-accumulator 0.0.0...
[INFO] testing merkle-accumulator-0.0.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate merkle-accumulator 0.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate merkle-accumulator 0.0.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merkle-accumulator 0.0.0
[INFO] finished tweaking crates.io crate merkle-accumulator 0.0.0
[INFO] tweaked toml for crates.io crate merkle-accumulator 0.0.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] acb0acd0d6cf3a854a5f937ea6471b34218e534d59f9e203c976b7dd75e90666
[INFO] running `Command { std: "docker" "start" "-a" "acb0acd0d6cf3a854a5f937ea6471b34218e534d59f9e203c976b7dd75e90666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acb0acd0d6cf3a854a5f937ea6471b34218e534d59f9e203c976b7dd75e90666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acb0acd0d6cf3a854a5f937ea6471b34218e534d59f9e203c976b7dd75e90666", kill_on_drop: false }`
[INFO] [stdout] acb0acd0d6cf3a854a5f937ea6471b34218e534d59f9e203c976b7dd75e90666
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bb5ba209f81046f70de106674363a3289a2b93b0a58aacf2615e06be22ddf9e
[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" "6bb5ba209f81046f70de106674363a3289a2b93b0a58aacf2615e06be22ddf9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling merkle-accumulator v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "6bb5ba209f81046f70de106674363a3289a2b93b0a58aacf2615e06be22ddf9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bb5ba209f81046f70de106674363a3289a2b93b0a58aacf2615e06be22ddf9e", kill_on_drop: false }`
[INFO] [stdout] 6bb5ba209f81046f70de106674363a3289a2b93b0a58aacf2615e06be22ddf9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-01-01" "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] e824ed2067214494e8a8f244a8c0c39dc57bcba5c29bf141e8b1fc1753406558
[INFO] running `Command { std: "docker" "start" "-a" "e824ed2067214494e8a8f244a8c0c39dc57bcba5c29bf141e8b1fc1753406558", kill_on_drop: false }`
[INFO] [stderr]    Compiling merkle-accumulator v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "e824ed2067214494e8a8f244a8c0c39dc57bcba5c29bf141e8b1fc1753406558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e824ed2067214494e8a8f244a8c0c39dc57bcba5c29bf141e8b1fc1753406558", kill_on_drop: false }`
[INFO] [stdout] e824ed2067214494e8a8f244a8c0c39dc57bcba5c29bf141e8b1fc1753406558
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 27d22dfecc5d459a6e4328b60ae868b7ea6d8a7e87dc5888a26d584eca3f64c9
[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" "27d22dfecc5d459a6e4328b60ae868b7ea6d8a7e87dc5888a26d584eca3f64c9", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/merkle_accumulator-fb1b85a774f5f8cd
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    Doc-tests merkle-accumulator
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "27d22dfecc5d459a6e4328b60ae868b7ea6d8a7e87dc5888a26d584eca3f64c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27d22dfecc5d459a6e4328b60ae868b7ea6d8a7e87dc5888a26d584eca3f64c9", kill_on_drop: false }`
[INFO] [stdout] 27d22dfecc5d459a6e4328b60ae868b7ea6d8a7e87dc5888a26d584eca3f64c9