[INFO] fetching crate serial_test_derive 0.5.1...
[INFO] testing serial_test_derive-0.5.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate serial_test_derive 0.5.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate serial_test_derive 0.5.1 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 serial_test_derive 0.5.1
[INFO] finished tweaking crates.io crate serial_test_derive 0.5.1
[INFO] tweaked toml for crates.io crate serial_test_derive 0.5.1 written to /workspace/builds/worker-5/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 9563be4bfd2ad553d46a89fe31601f553a76a019ff6893a508887d52c15ecfb6
[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" "9563be4bfd2ad553d46a89fe31601f553a76a019ff6893a508887d52c15ecfb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9563be4bfd2ad553d46a89fe31601f553a76a019ff6893a508887d52c15ecfb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9563be4bfd2ad553d46a89fe31601f553a76a019ff6893a508887d52c15ecfb6", kill_on_drop: false }`
[INFO] [stdout] 9563be4bfd2ad553d46a89fe31601f553a76a019ff6893a508887d52c15ecfb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 8d6a97fd941562117d78cb8cf6fb73351fb713192ce12ebea0e14ab8fe64bfba
[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" "8d6a97fd941562117d78cb8cf6fb73351fb713192ce12ebea0e14ab8fe64bfba", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling serial_test_derive v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.01s
[INFO] running `Command { std: "docker" "inspect" "8d6a97fd941562117d78cb8cf6fb73351fb713192ce12ebea0e14ab8fe64bfba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d6a97fd941562117d78cb8cf6fb73351fb713192ce12ebea0e14ab8fe64bfba", kill_on_drop: false }`
[INFO] [stdout] 8d6a97fd941562117d78cb8cf6fb73351fb713192ce12ebea0e14ab8fe64bfba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] d8662234997e664848242419fd6c256bb20aecbc4bba5de5fa02b3c3267a3ef2
[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" "d8662234997e664848242419fd6c256bb20aecbc4bba5de5fa02b3c3267a3ef2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling env_logger v0.8.2
[INFO] [stderr]    Compiling serial_test_derive v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.60s
[INFO] running `Command { std: "docker" "inspect" "d8662234997e664848242419fd6c256bb20aecbc4bba5de5fa02b3c3267a3ef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8662234997e664848242419fd6c256bb20aecbc4bba5de5fa02b3c3267a3ef2", kill_on_drop: false }`
[INFO] [stdout] d8662234997e664848242419fd6c256bb20aecbc4bba5de5fa02b3c3267a3ef2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] da367d2f270cdbb4d4949498fa19a77d6ab0d7bffa9229f593f43b5ee634c7a2
[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" "da367d2f270cdbb4d4949498fa19a77d6ab0d7bffa9229f593f43b5ee634c7a2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serial_test_derive-4dd2b81260754293
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_serial ... ok
[INFO] [stdout] test test_serial_async ... ok
[INFO] [stdout] test test_stripped_attributes ... ok
[INFO] [stdout] test test_serial_async_return ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serial_test_derive
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - serial (line 13) ... ok
[INFO] [stdout] test src/lib.rs - serial (line 30) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "da367d2f270cdbb4d4949498fa19a77d6ab0d7bffa9229f593f43b5ee634c7a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da367d2f270cdbb4d4949498fa19a77d6ab0d7bffa9229f593f43b5ee634c7a2", kill_on_drop: false }`
[INFO] [stdout] da367d2f270cdbb4d4949498fa19a77d6ab0d7bffa9229f593f43b5ee634c7a2