[INFO] fetching crate prefix_num_ops 0.1.3...
[INFO] testing prefix_num_ops-0.1.3 against 1.49.0 for beta-1.50-1
[INFO] extracting crate prefix_num_ops 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate prefix_num_ops 0.1.3 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 prefix_num_ops 0.1.3
[INFO] finished tweaking crates.io crate prefix_num_ops 0.1.3
[INFO] tweaked toml for crates.io crate prefix_num_ops 0.1.3 written to /workspace/builds/worker-4/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-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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39fe9a8bdc2c0b21e3f3ef05d43626936a5a58e410d35bba2ef1216b7372e79b
[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" "39fe9a8bdc2c0b21e3f3ef05d43626936a5a58e410d35bba2ef1216b7372e79b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39fe9a8bdc2c0b21e3f3ef05d43626936a5a58e410d35bba2ef1216b7372e79b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39fe9a8bdc2c0b21e3f3ef05d43626936a5a58e410d35bba2ef1216b7372e79b", kill_on_drop: false }`
[INFO] [stdout] 39fe9a8bdc2c0b21e3f3ef05d43626936a5a58e410d35bba2ef1216b7372e79b
[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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c90a56a74703674758f1ecfb58e5312c0f7246e09715834630a7fd79bcb0085
[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" "8c90a56a74703674758f1ecfb58e5312c0f7246e09715834630a7fd79bcb0085", kill_on_drop: false }`
[INFO] [stderr]    Compiling prefix_num_ops v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "8c90a56a74703674758f1ecfb58e5312c0f7246e09715834630a7fd79bcb0085", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c90a56a74703674758f1ecfb58e5312c0f7246e09715834630a7fd79bcb0085", kill_on_drop: false }`
[INFO] [stdout] 8c90a56a74703674758f1ecfb58e5312c0f7246e09715834630a7fd79bcb0085
[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" "+1.49.0" "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] e54e5b84e26c70d9cecf97dd2472f89ea95ce3f4476e28f92de35706aa9992de
[INFO] running `Command { std: "docker" "start" "-a" "e54e5b84e26c70d9cecf97dd2472f89ea95ce3f4476e28f92de35706aa9992de", kill_on_drop: false }`
[INFO] [stderr]    Compiling prefix_num_ops v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "e54e5b84e26c70d9cecf97dd2472f89ea95ce3f4476e28f92de35706aa9992de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e54e5b84e26c70d9cecf97dd2472f89ea95ce3f4476e28f92de35706aa9992de", kill_on_drop: false }`
[INFO] [stdout] e54e5b84e26c70d9cecf97dd2472f89ea95ce3f4476e28f92de35706aa9992de
[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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9fe85155b2bbcc08e3bdf9af8598d654e7b96391cfbb2b54dd96671d6c315e8b
[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" "9fe85155b2bbcc08e3bdf9af8598d654e7b96391cfbb2b54dd96671d6c315e8b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/prefix_num_ops-fb4ade822522642e
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prefix_num_ops
[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" "9fe85155b2bbcc08e3bdf9af8598d654e7b96391cfbb2b54dd96671d6c315e8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fe85155b2bbcc08e3bdf9af8598d654e7b96391cfbb2b54dd96671d6c315e8b", kill_on_drop: false }`
[INFO] [stdout] 9fe85155b2bbcc08e3bdf9af8598d654e7b96391cfbb2b54dd96671d6c315e8b