[INFO] fetching crate opentracing-rs-core 0.1.0...
[INFO] testing opentracing-rs-core-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate opentracing-rs-core 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate opentracing-rs-core 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 opentracing-rs-core 0.1.0
[INFO] finished tweaking crates.io crate opentracing-rs-core 0.1.0
[INFO] tweaked toml for crates.io crate opentracing-rs-core 0.1.0 written to /workspace/builds/worker-14/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 2e1bc18a6c46682f2ff12b27a4d9b5cac33096a976cdd3d52369d70ff5971bd8
[INFO] running `Command { std: "docker" "start" "-a" "2e1bc18a6c46682f2ff12b27a4d9b5cac33096a976cdd3d52369d70ff5971bd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e1bc18a6c46682f2ff12b27a4d9b5cac33096a976cdd3d52369d70ff5971bd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e1bc18a6c46682f2ff12b27a4d9b5cac33096a976cdd3d52369d70ff5971bd8", kill_on_drop: false }`
[INFO] [stdout] 2e1bc18a6c46682f2ff12b27a4d9b5cac33096a976cdd3d52369d70ff5971bd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 7ed6b21c969b49019b471312d690391dd696cd35b5e18ac349eba9b4f7c1b7c9
[INFO] running `Command { std: "docker" "start" "-a" "7ed6b21c969b49019b471312d690391dd696cd35b5e18ac349eba9b4f7c1b7c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling opentracing-rs-core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.97s
[INFO] running `Command { std: "docker" "inspect" "7ed6b21c969b49019b471312d690391dd696cd35b5e18ac349eba9b4f7c1b7c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ed6b21c969b49019b471312d690391dd696cd35b5e18ac349eba9b4f7c1b7c9", kill_on_drop: false }`
[INFO] [stdout] 7ed6b21c969b49019b471312d690391dd696cd35b5e18ac349eba9b4f7c1b7c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] f88c069f7c597d3e3878a7a49349379687e6f6a2b23f009680633b776ddaff0e
[INFO] running `Command { std: "docker" "start" "-a" "f88c069f7c597d3e3878a7a49349379687e6f6a2b23f009680633b776ddaff0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling opentracing-rs-core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "f88c069f7c597d3e3878a7a49349379687e6f6a2b23f009680633b776ddaff0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f88c069f7c597d3e3878a7a49349379687e6f6a2b23f009680633b776ddaff0e", kill_on_drop: false }`
[INFO] [stdout] f88c069f7c597d3e3878a7a49349379687e6f6a2b23f009680633b776ddaff0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 19c56c39fa2ce53f5bc800078341b9800c80e39392aba34df94f3c808dece1e9
[INFO] running `Command { std: "docker" "start" "-a" "19c56c39fa2ce53f5bc800078341b9800c80e39392aba34df94f3c808dece1e9", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/opentracing_rs_core-6bd1da769623c56a)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests opentracing-rs-core
[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" "19c56c39fa2ce53f5bc800078341b9800c80e39392aba34df94f3c808dece1e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19c56c39fa2ce53f5bc800078341b9800c80e39392aba34df94f3c808dece1e9", kill_on_drop: false }`
[INFO] [stdout] 19c56c39fa2ce53f5bc800078341b9800c80e39392aba34df94f3c808dece1e9