[INFO] fetching crate stochastic-data-structures 0.1.0...
[INFO] testing stochastic-data-structures-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate stochastic-data-structures 0.1.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate stochastic-data-structures 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stochastic-data-structures 0.1.0
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate stochastic-data-structures 0.1.0
[INFO] tweaked toml for crates.io crate stochastic-data-structures 0.1.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcba47ba84ac1a31c905d05c7df1408c74aaeb386206ff4d3ead43cabeed684d
[INFO] running `Command { std: "docker" "start" "-a" "bcba47ba84ac1a31c905d05c7df1408c74aaeb386206ff4d3ead43cabeed684d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcba47ba84ac1a31c905d05c7df1408c74aaeb386206ff4d3ead43cabeed684d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcba47ba84ac1a31c905d05c7df1408c74aaeb386206ff4d3ead43cabeed684d", kill_on_drop: false }`
[INFO] [stdout] bcba47ba84ac1a31c905d05c7df1408c74aaeb386206ff4d3ead43cabeed684d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef2fc3b0b99600ccbf6fd7cf994f376964af54d3ab2a57e4fd8ee97858ab5db5
[INFO] running `Command { std: "docker" "start" "-a" "ef2fc3b0b99600ccbf6fd7cf994f376964af54d3ab2a57e4fd8ee97858ab5db5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling streaming-stats v0.2.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling stochastic-data-structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `Command { std: "docker" "inspect" "ef2fc3b0b99600ccbf6fd7cf994f376964af54d3ab2a57e4fd8ee97858ab5db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef2fc3b0b99600ccbf6fd7cf994f376964af54d3ab2a57e4fd8ee97858ab5db5", kill_on_drop: false }`
[INFO] [stdout] ef2fc3b0b99600ccbf6fd7cf994f376964af54d3ab2a57e4fd8ee97858ab5db5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17a62f9d989458cc7bf18c46397e0910c9431d38e93322e58f339d3c2adf5278
[INFO] running `Command { std: "docker" "start" "-a" "17a62f9d989458cc7bf18c46397e0910c9431d38e93322e58f339d3c2adf5278", kill_on_drop: false }`
[INFO] [stderr]    Compiling stochastic-data-structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "17a62f9d989458cc7bf18c46397e0910c9431d38e93322e58f339d3c2adf5278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17a62f9d989458cc7bf18c46397e0910c9431d38e93322e58f339d3c2adf5278", kill_on_drop: false }`
[INFO] [stdout] 17a62f9d989458cc7bf18c46397e0910c9431d38e93322e58f339d3c2adf5278
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ec91d34333133fb88408d63a2aaadd75f0888f5b32e46017d4f65b89391dda78
[INFO] running `Command { std: "docker" "start" "-a" "ec91d34333133fb88408d63a2aaadd75f0888f5b32e46017d4f65b89391dda78", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/stochastic_data_structures-10b13c90a8b11c0a)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stochastic-data-structures
[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] [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" "ec91d34333133fb88408d63a2aaadd75f0888f5b32e46017d4f65b89391dda78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec91d34333133fb88408d63a2aaadd75f0888f5b32e46017d4f65b89391dda78", kill_on_drop: false }`
[INFO] [stdout] ec91d34333133fb88408d63a2aaadd75f0888f5b32e46017d4f65b89391dda78