[INFO] fetching crate merkle-cbt 0.3.0...
[INFO] testing merkle-cbt-0.3.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate merkle-cbt 0.3.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate merkle-cbt 0.3.0 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-cbt 0.3.0
[INFO] finished tweaking crates.io crate merkle-cbt 0.3.0
[INFO] tweaked toml for crates.io crate merkle-cbt 0.3.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate merkle-cbt 0.3.0 already has a lockfile, it will not be regenerated
[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 proptest v0.8.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 06488f012fdc3b0a3d855c08239ced9606c1cabc69a576835a1c2eed12159c4c
[INFO] running `Command { std: "docker" "start" "-a" "06488f012fdc3b0a3d855c08239ced9606c1cabc69a576835a1c2eed12159c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06488f012fdc3b0a3d855c08239ced9606c1cabc69a576835a1c2eed12159c4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06488f012fdc3b0a3d855c08239ced9606c1cabc69a576835a1c2eed12159c4c", kill_on_drop: false }`
[INFO] [stdout] 06488f012fdc3b0a3d855c08239ced9606c1cabc69a576835a1c2eed12159c4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 31f09e6d86d031674c53ca194ebfba7374b9be13b71114186faa34c0702f8387
[INFO] running `Command { std: "docker" "start" "-a" "31f09e6d86d031674c53ca194ebfba7374b9be13b71114186faa34c0702f8387", kill_on_drop: false }`
[INFO] [stderr]    Compiling merkle-cbt v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "31f09e6d86d031674c53ca194ebfba7374b9be13b71114186faa34c0702f8387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f09e6d86d031674c53ca194ebfba7374b9be13b71114186faa34c0702f8387", kill_on_drop: false }`
[INFO] [stdout] 31f09e6d86d031674c53ca194ebfba7374b9be13b71114186faa34c0702f8387
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] a6a32569483e1e3be22f27c3c4e8bda88b9326ce7a1d09791e550de54429ef26
[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" "a6a32569483e1e3be22f27c3c4e8bda88b9326ce7a1d09791e550de54429ef26", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling proptest v0.8.7
[INFO] [stderr]    Compiling merkle-cbt v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 30.69s
[INFO] running `Command { std: "docker" "inspect" "a6a32569483e1e3be22f27c3c4e8bda88b9326ce7a1d09791e550de54429ef26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6a32569483e1e3be22f27c3c4e8bda88b9326ce7a1d09791e550de54429ef26", kill_on_drop: false }`
[INFO] [stdout] a6a32569483e1e3be22f27c3c4e8bda88b9326ce7a1d09791e550de54429ef26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] d8a40cc9365e9da8708c36442f5ea5a1dac1f2414dca2504bd715f60529245a7
[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" "d8a40cc9365e9da8708c36442f5ea5a1dac1f2414dca2504bd715f60529245a7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/merkle_cbt-55571d829f993271
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test merkle_tree::tests::build_five ... ok
[INFO] [stdout] test merkle_tree::tests::build_empty ... ok
[INFO] [stdout] test merkle_tree::tests::build_one ... ok
[INFO] [stdout] test merkle_tree::tests::verify_retrieve_leaves ... ok
[INFO] [stdout] test merkle_tree::tests::build_proof ... ok
[INFO] [stdout] test merkle_tree::tests::build_root_directly ... ok
[INFO] [stdout] test merkle_tree::tests::build_two ... ok
[INFO] [stdout] test merkle_tree::tests::rebuild_proof ... ok
[INFO] [stdout] test merkle_tree::tests::build_root_is_same_as_tree_root ... ok
[INFO] [stderr]    Doc-tests merkle-cbt
[INFO] [stdout] test merkle_tree::tests::tree_root_is_same_as_proof_root ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.60s
[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" "d8a40cc9365e9da8708c36442f5ea5a1dac1f2414dca2504bd715f60529245a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a40cc9365e9da8708c36442f5ea5a1dac1f2414dca2504bd715f60529245a7", kill_on_drop: false }`
[INFO] [stdout] d8a40cc9365e9da8708c36442f5ea5a1dac1f2414dca2504bd715f60529245a7