[INFO] fetching crate sparse-merkle-tree 0.3.1-pre...
[INFO] testing sparse-merkle-tree-0.3.1-pre against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate sparse-merkle-tree 0.3.1-pre into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sparse-merkle-tree 0.3.1-pre 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 sparse-merkle-tree 0.3.1-pre
[INFO] finished tweaking crates.io crate sparse-merkle-tree 0.3.1-pre
[INFO] tweaked toml for crates.io crate sparse-merkle-tree 0.3.1-pre written to /workspace/builds/worker-6/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusty-fork v0.2.2
[INFO] [stderr]   Downloaded proptest v0.9.6
[INFO] [stderr]   Downloaded blake2b-rs v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] 45f21a47e8694ba420875d75c2178cf0153025980748163a3cb2b5ba53088169
[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" "45f21a47e8694ba420875d75c2178cf0153025980748163a3cb2b5ba53088169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45f21a47e8694ba420875d75c2178cf0153025980748163a3cb2b5ba53088169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45f21a47e8694ba420875d75c2178cf0153025980748163a3cb2b5ba53088169", kill_on_drop: false }`
[INFO] [stdout] 45f21a47e8694ba420875d75c2178cf0153025980748163a3cb2b5ba53088169
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 7482311fc3123a73bab197a6ea1d25e308f9abf4dba3b56a8d1c397b51742fc5
[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" "7482311fc3123a73bab197a6ea1d25e308f9abf4dba3b56a8d1c397b51742fc5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling blake2b-rs v0.1.5
[INFO] [stderr]    Compiling sparse-merkle-tree v0.3.1-pre (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.76s
[INFO] running `Command { std: "docker" "inspect" "7482311fc3123a73bab197a6ea1d25e308f9abf4dba3b56a8d1c397b51742fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7482311fc3123a73bab197a6ea1d25e308f9abf4dba3b56a8d1c397b51742fc5", kill_on_drop: false }`
[INFO] [stdout] 7482311fc3123a73bab197a6ea1d25e308f9abf4dba3b56a8d1c397b51742fc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] 5635f2f2044f542b68a7af90b6cfc8451830aa86df7392fb19ed285efc854534
[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" "5635f2f2044f542b68a7af90b6cfc8451830aa86df7392fb19ed285efc854534", kill_on_drop: false }`
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling tinytemplate v1.2.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling proptest v0.9.6
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling sparse-merkle-tree v0.3.1-pre (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 30.52s
[INFO] running `Command { std: "docker" "inspect" "5635f2f2044f542b68a7af90b6cfc8451830aa86df7392fb19ed285efc854534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5635f2f2044f542b68a7af90b6cfc8451830aa86df7392fb19ed285efc854534", kill_on_drop: false }`
[INFO] [stdout] 5635f2f2044f542b68a7af90b6cfc8451830aa86df7392fb19ed285efc854534
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 27bfd1f206ead8d77b7fbe72e19061f36aaff8ee11ea51995329fe428ee9658e
[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" "27bfd1f206ead8d77b7fbe72e19061f36aaff8ee11ea51995329fe428ee9658e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/sparse_merkle_tree-603c579557626089
[INFO] [stdout] running 24 tests
[INFO] [stdout] test tests::test_default_tree ... ok
[INFO] [stdout] test tests::test_merkle_root ... ok
[INFO] [stdout] test tests::test_delete_a_leaf ... ok
[INFO] [stdout] test tests::test_default_merkle_proof ... ok
[INFO] [stdout] test tests::test_default_root ... ok
[INFO] [stdout] test tests::test_h256 ... ok
[INFO] [stdout] test tests::test_random_construct ... ok
[INFO] [stdout] test tests::test_v0_2_broken_sample ... ok
[INFO] [stdout] test tests::test_v0_3_broken_sample ... ok
[INFO] [stdout] test tests::test_h256_copy_bits ... ok
[INFO] [stdout] test tests::test_zero_value_donot_change_root ... ok
[INFO] [stdout] test tests::test_zero_value_donot_change_store ... ok
[INFO] [stdout] test tests::test_random_update ... ok
[INFO] [stdout] test tests::test_random_merkle_proof ... ok
[INFO] [stdout] test tests::test_random_update_tree_store ... ok
[INFO] [stdout] test tests::test_update_smt_tree_store ... ok
[INFO] [stdout] test tests::test_smt_update_with_zero_values ... ok
[INFO] [stdout] test tests::test_smt_non_exists_leaves ... ok
[INFO] [stdout] test tests::test_smt_non_exists_leaves_mix ... ok
[INFO] [stdout] test tests::test_smt_multi_leaves_small ... ok
[INFO] [stdout] test tests::test_smt_random_insert_order ... ok
[INFO] [stdout] test tests::test_smt_multi_leaves_large ... ok
[INFO] [stdout] test tests::test_smt_single_leaf_small ... ok
[INFO] [stderr]    Doc-tests sparse-merkle-tree
[INFO] [stdout] test tests::test_smt_single_leaf_large ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 15.64s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "27bfd1f206ead8d77b7fbe72e19061f36aaff8ee11ea51995329fe428ee9658e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27bfd1f206ead8d77b7fbe72e19061f36aaff8ee11ea51995329fe428ee9658e", kill_on_drop: false }`
[INFO] [stdout] 27bfd1f206ead8d77b7fbe72e19061f36aaff8ee11ea51995329fe428ee9658e