[INFO] fetching crate dejavu 2.37.0...
[INFO] testing dejavu-2.37.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate dejavu 2.37.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate dejavu 2.37.0 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 dejavu 2.37.0
[INFO] finished tweaking crates.io crate dejavu 2.37.0
[INFO] tweaked toml for crates.io crate dejavu 2.37.0 written to /workspace/builds/worker-0/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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8fb8419fd0ac001a3879905e2c177e9d13f9e9cc1da0185801486231da4d0ecc
[INFO] running `Command { std: "docker" "start" "-a" "8fb8419fd0ac001a3879905e2c177e9d13f9e9cc1da0185801486231da4d0ecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fb8419fd0ac001a3879905e2c177e9d13f9e9cc1da0185801486231da4d0ecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fb8419fd0ac001a3879905e2c177e9d13f9e9cc1da0185801486231da4d0ecc", kill_on_drop: false }`
[INFO] [stdout] 8fb8419fd0ac001a3879905e2c177e9d13f9e9cc1da0185801486231da4d0ecc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] e6ec2702b806fc83f12c9cd6cc64dc6259e39092313bcc6c7be0969f0b528bb0
[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" "e6ec2702b806fc83f12c9cd6cc64dc6259e39092313bcc6c7be0969f0b528bb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling dejavu v2.37.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "e6ec2702b806fc83f12c9cd6cc64dc6259e39092313bcc6c7be0969f0b528bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6ec2702b806fc83f12c9cd6cc64dc6259e39092313bcc6c7be0969f0b528bb0", kill_on_drop: false }`
[INFO] [stdout] e6ec2702b806fc83f12c9cd6cc64dc6259e39092313bcc6c7be0969f0b528bb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stdout] 2ad4e30b72868b0d74681b0f8f4b275b5c92636b3a9c09e1eabb1ed3af1b8250
[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" "2ad4e30b72868b0d74681b0f8f4b275b5c92636b3a9c09e1eabb1ed3af1b8250", kill_on_drop: false }`
[INFO] [stderr]    Compiling dejavu v2.37.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "2ad4e30b72868b0d74681b0f8f4b275b5c92636b3a9c09e1eabb1ed3af1b8250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad4e30b72868b0d74681b0f8f4b275b5c92636b3a9c09e1eabb1ed3af1b8250", kill_on_drop: false }`
[INFO] [stdout] 2ad4e30b72868b0d74681b0f8f4b275b5c92636b3a9c09e1eabb1ed3af1b8250
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 4c0076707a8e0782d22db8ec0ed3585ac14ddc6ed488a13029f21fb36ef6adcd
[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" "4c0076707a8e0782d22db8ec0ed3585ac14ddc6ed488a13029f21fb36ef6adcd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/dejavu-c8cac27eeb2e09f5
[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] [stderr]    Doc-tests dejavu
[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" "4c0076707a8e0782d22db8ec0ed3585ac14ddc6ed488a13029f21fb36ef6adcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c0076707a8e0782d22db8ec0ed3585ac14ddc6ed488a13029f21fb36ef6adcd", kill_on_drop: false }`
[INFO] [stdout] 4c0076707a8e0782d22db8ec0ed3585ac14ddc6ed488a13029f21fb36ef6adcd