[INFO] fetching crate futures-zipkin 0.4.0...
[INFO] testing futures-zipkin-0.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate futures-zipkin 0.4.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate futures-zipkin 0.4.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-zipkin 0.4.0
[INFO] finished tweaking crates.io crate futures-zipkin 0.4.0
[INFO] tweaked toml for crates.io crate futures-zipkin 0.4.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2696bab3bda983fe3666fbf3b37dea610487be7e36d0976727f711d9c25086b9
[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" "2696bab3bda983fe3666fbf3b37dea610487be7e36d0976727f711d9c25086b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2696bab3bda983fe3666fbf3b37dea610487be7e36d0976727f711d9c25086b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2696bab3bda983fe3666fbf3b37dea610487be7e36d0976727f711d9c25086b9", kill_on_drop: false }`
[INFO] [stdout] 2696bab3bda983fe3666fbf3b37dea610487be7e36d0976727f711d9c25086b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ce7e5395e0d02ee031125d0d90c09a4a7533da9b669c31dc796605638168fc5
[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" "9ce7e5395e0d02ee031125d0d90c09a4a7533da9b669c31dc796605638168fc5", kill_on_drop: false }`
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling data-encoding v2.3.1
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling thread-local-object v0.1.0
[INFO] [stderr]    Compiling zipkin-types v0.1.0
[INFO] [stderr]    Compiling zipkin v0.3.5
[INFO] [stderr]    Compiling futures-zipkin v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.32s
[INFO] running `Command { std: "docker" "inspect" "9ce7e5395e0d02ee031125d0d90c09a4a7533da9b669c31dc796605638168fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ce7e5395e0d02ee031125d0d90c09a4a7533da9b669c31dc796605638168fc5", kill_on_drop: false }`
[INFO] [stdout] 9ce7e5395e0d02ee031125d0d90c09a4a7533da9b669c31dc796605638168fc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0192757342dbd0ea9b7ac1d48573baf2f36a070e66fd44484dc80d405550de3
[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" "a0192757342dbd0ea9b7ac1d48573baf2f36a070e66fd44484dc80d405550de3", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-zipkin v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "a0192757342dbd0ea9b7ac1d48573baf2f36a070e66fd44484dc80d405550de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0192757342dbd0ea9b7ac1d48573baf2f36a070e66fd44484dc80d405550de3", kill_on_drop: false }`
[INFO] [stdout] a0192757342dbd0ea9b7ac1d48573baf2f36a070e66fd44484dc80d405550de3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7dd210846d94f24a39e3f59bc37dca47d6081ffbfda0ac56ad50b6f483ffcdf5
[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" "7dd210846d94f24a39e3f59bc37dca47d6081ffbfda0ac56ad50b6f483ffcdf5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/futures_zipkin-85fb096b219aa909
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests futures-zipkin
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7dd210846d94f24a39e3f59bc37dca47d6081ffbfda0ac56ad50b6f483ffcdf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dd210846d94f24a39e3f59bc37dca47d6081ffbfda0ac56ad50b6f483ffcdf5", kill_on_drop: false }`
[INFO] [stdout] 7dd210846d94f24a39e3f59bc37dca47d6081ffbfda0ac56ad50b6f483ffcdf5