[INFO] fetching crate trace-context 0.1.0...
[INFO] testing trace-context-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate trace-context 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate trace-context 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 trace-context 0.1.0
[INFO] finished tweaking crates.io crate trace-context 0.1.0
[INFO] tweaked toml for crates.io crate trace-context 0.1.0 written to /workspace/builds/worker-6/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-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" "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] 126f0f4495e001dc3ddf28e5f2a2c6e8207b24007c3d71e8b8a737c2b8e6db8d
[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" "126f0f4495e001dc3ddf28e5f2a2c6e8207b24007c3d71e8b8a737c2b8e6db8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "126f0f4495e001dc3ddf28e5f2a2c6e8207b24007c3d71e8b8a737c2b8e6db8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "126f0f4495e001dc3ddf28e5f2a2c6e8207b24007c3d71e8b8a737c2b8e6db8d", kill_on_drop: false }`
[INFO] [stdout] 126f0f4495e001dc3ddf28e5f2a2c6e8207b24007c3d71e8b8a737c2b8e6db8d
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b0239a25d2b10097fda989c3871021082a186510d426d767f2f58fa319cf9360
[INFO] running `Command { std: "docker" "start" "-a" "b0239a25d2b10097fda989c3871021082a186510d426d767f2f58fa319cf9360", kill_on_drop: false }`
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling trace-context v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.97s
[INFO] running `Command { std: "docker" "inspect" "b0239a25d2b10097fda989c3871021082a186510d426d767f2f58fa319cf9360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0239a25d2b10097fda989c3871021082a186510d426d767f2f58fa319cf9360", kill_on_drop: false }`
[INFO] [stdout] b0239a25d2b10097fda989c3871021082a186510d426d767f2f58fa319cf9360
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6c0b45208001470dd9d1a38ec1763be4eb81e9b64da0ab0b65f5a694f0f52ad8
[INFO] running `Command { std: "docker" "start" "-a" "6c0b45208001470dd9d1a38ec1763be4eb81e9b64da0ab0b65f5a694f0f52ad8", kill_on_drop: false }`
[INFO] [stderr]    Compiling trace-context v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "6c0b45208001470dd9d1a38ec1763be4eb81e9b64da0ab0b65f5a694f0f52ad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c0b45208001470dd9d1a38ec1763be4eb81e9b64da0ab0b65f5a694f0f52ad8", kill_on_drop: false }`
[INFO] [stdout] 6c0b45208001470dd9d1a38ec1763be4eb81e9b64da0ab0b65f5a694f0f52ad8
[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" "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] ebfffebc2afdea9a0b89060226913a433db728ec46a52751fee3f830f7b3ba56
[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" "ebfffebc2afdea9a0b89060226913a433db728ec46a52751fee3f830f7b3ba56", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/trace_context-34e16c7d4949cf42)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test::extract::default ... ok
[INFO] [stdout] test test::extract::not_sampled ... ok
[INFO] [stdout] test test::extract::sampled ... ok
[INFO] [stderr]    Doc-tests trace-context
[INFO] [stdout] test test::extract::no_header ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - TraceContext::set_sampled (line 150) ... ok
[INFO] [stdout] test src/lib.rs - TraceContext::extract (line 37) ... ok
[INFO] [stdout] test src/lib.rs - TraceContext::sampled (line 137) ... ok
[INFO] [stdout] test src/lib.rs - TraceContext::inject (line 82) ... ok
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.63s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ebfffebc2afdea9a0b89060226913a433db728ec46a52751fee3f830f7b3ba56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebfffebc2afdea9a0b89060226913a433db728ec46a52751fee3f830f7b3ba56", kill_on_drop: false }`
[INFO] [stdout] ebfffebc2afdea9a0b89060226913a433db728ec46a52751fee3f830f7b3ba56