[INFO] fetching crate release-experiment-top-crate 0.3.5...
[INFO] testing release-experiment-top-crate-0.3.5 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate release-experiment-top-crate 0.3.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate release-experiment-top-crate 0.3.5 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate release-experiment-top-crate 0.3.5
[INFO] finished tweaking crates.io crate release-experiment-top-crate 0.3.5
[INFO] tweaked toml for crates.io crate release-experiment-top-crate 0.3.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac8ed09a1e7c2c5e1122fc7d0c56db4c3a35722ddd85792e6ca19602895a7c13
[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" "ac8ed09a1e7c2c5e1122fc7d0c56db4c3a35722ddd85792e6ca19602895a7c13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac8ed09a1e7c2c5e1122fc7d0c56db4c3a35722ddd85792e6ca19602895a7c13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac8ed09a1e7c2c5e1122fc7d0c56db4c3a35722ddd85792e6ca19602895a7c13", kill_on_drop: false }`
[INFO] [stdout] ac8ed09a1e7c2c5e1122fc7d0c56db4c3a35722ddd85792e6ca19602895a7c13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] fe6daaf47fe584a8e9057d35c7f9bcb097cfd7eef051e455d5223f481e3e4efe
[INFO] running `Command { std: "docker" "start" "-a" "fe6daaf47fe584a8e9057d35c7f9bcb097cfd7eef051e455d5223f481e3e4efe", kill_on_drop: false }`
[INFO] [stderr]    Compiling release-experiment-top-crate v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "fe6daaf47fe584a8e9057d35c7f9bcb097cfd7eef051e455d5223f481e3e4efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe6daaf47fe584a8e9057d35c7f9bcb097cfd7eef051e455d5223f481e3e4efe", kill_on_drop: false }`
[INFO] [stdout] fe6daaf47fe584a8e9057d35c7f9bcb097cfd7eef051e455d5223f481e3e4efe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9cada2a1f112415aa9e274c949544d95ea2dc8e3a4577f6b5daa5766f5e39a61
[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" "9cada2a1f112415aa9e274c949544d95ea2dc8e3a4577f6b5daa5766f5e39a61", kill_on_drop: false }`
[INFO] [stderr]    Compiling release-experiment-top-crate v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "9cada2a1f112415aa9e274c949544d95ea2dc8e3a4577f6b5daa5766f5e39a61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cada2a1f112415aa9e274c949544d95ea2dc8e3a4577f6b5daa5766f5e39a61", kill_on_drop: false }`
[INFO] [stdout] 9cada2a1f112415aa9e274c949544d95ea2dc8e3a4577f6b5daa5766f5e39a61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2975fec517526a119257c0dcb187d2752f46a4a1ed4f2d9afac2aa5f6ab749eb
[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" "2975fec517526a119257c0dcb187d2752f46a4a1ed4f2d9afac2aa5f6ab749eb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/release_experiment_top_crate-675faf41cdc776e3
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests release-experiment-top-crate
[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" "2975fec517526a119257c0dcb187d2752f46a4a1ed4f2d9afac2aa5f6ab749eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2975fec517526a119257c0dcb187d2752f46a4a1ed4f2d9afac2aa5f6ab749eb", kill_on_drop: false }`
[INFO] [stdout] 2975fec517526a119257c0dcb187d2752f46a4a1ed4f2d9afac2aa5f6ab749eb