[INFO] fetching crate openrtb 0.1.0...
[INFO] testing openrtb-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate openrtb 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate openrtb 0.1.0 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 openrtb 0.1.0
[INFO] finished tweaking crates.io crate openrtb 0.1.0
[INFO] tweaked toml for crates.io crate openrtb 0.1.0 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] 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] 421f9ef54bd753595cdfcbd2f8ec2377200d4cfe61ab5e1d34fcf5a5063f1fee
[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" "421f9ef54bd753595cdfcbd2f8ec2377200d4cfe61ab5e1d34fcf5a5063f1fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "421f9ef54bd753595cdfcbd2f8ec2377200d4cfe61ab5e1d34fcf5a5063f1fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "421f9ef54bd753595cdfcbd2f8ec2377200d4cfe61ab5e1d34fcf5a5063f1fee", kill_on_drop: false }`
[INFO] [stdout] 421f9ef54bd753595cdfcbd2f8ec2377200d4cfe61ab5e1d34fcf5a5063f1fee
[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] 35e33a88ea4bcfaee1a5594177ff1ba00a89a734553e8bad4adf4b24b07bcbd7
[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" "35e33a88ea4bcfaee1a5594177ff1ba00a89a734553e8bad4adf4b24b07bcbd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling phf_macros v0.7.24
[INFO] [stderr]    Compiling openrtb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: /opt/rustwide/target/debug/deps/libphf_macros-1c84a37466a65f7e.so: undefined symbol: __rustc_plugin_registrar_38320fd5627b7cd0c6c9150facdb0cb9__
[INFO] [stdout]   --> src/lib.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![plugin(phf_macros)]
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `openrtb`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "35e33a88ea4bcfaee1a5594177ff1ba00a89a734553e8bad4adf4b24b07bcbd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35e33a88ea4bcfaee1a5594177ff1ba00a89a734553e8bad4adf4b24b07bcbd7", kill_on_drop: false }`
[INFO] [stdout] 35e33a88ea4bcfaee1a5594177ff1ba00a89a734553e8bad4adf4b24b07bcbd7