[INFO] fetching crate wf2_core 0.31.0...
[INFO] testing wf2_core-0.31.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate wf2_core 0.31.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate wf2_core 0.31.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wf2_core 0.31.0
[INFO] finished tweaking crates.io crate wf2_core 0.31.0
[INFO] tweaked toml for crates.io crate wf2_core 0.31.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7f51216b7d02da2585c0cc2be4bf2c97f89414e8f74f6b7e074c674846f968e
[INFO] running `Command { std: "docker" "start" "-a" "f7f51216b7d02da2585c0cc2be4bf2c97f89414e8f74f6b7e074c674846f968e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7f51216b7d02da2585c0cc2be4bf2c97f89414e8f74f6b7e074c674846f968e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7f51216b7d02da2585c0cc2be4bf2c97f89414e8f74f6b7e074c674846f968e", kill_on_drop: false }`
[INFO] [stdout] f7f51216b7d02da2585c0cc2be4bf2c97f89414e8f74f6b7e074c674846f968e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11ce8129cbcd27070027e66451f8db428f208e5be04f4137d032bcf6102a3122
[INFO] running `Command { std: "docker" "start" "-a" "11ce8129cbcd27070027e66451f8db428f208e5be04f4137d032bcf6102a3122", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling encode_unicode v0.3.6
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling base64 v0.11.0
[INFO] [stderr]    Compiling filepath v0.1.1
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling try_from v0.3.2
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling users v0.9.1
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling flate2 v1.0.21
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling publicsuffix v1.5.6
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling snailquote v0.2.0
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling libmath v0.2.1
[INFO] [stderr]    Compiling cookie v0.12.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling tokio-buf v0.1.1
[INFO] [stderr]    Compiling string v0.2.1
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling bzip2 v0.4.3
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling zip v0.5.13
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling http-body v0.1.0
[INFO] [stderr] error: could not compile `http`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name http /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/http-0.1.21/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=5dd318469f750660 -C extra-filename=-5dd318469f750660 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-74650cd9af495baf.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-d1dc8bedb5ffcb44.rmeta --extern itoa=/opt/rustwide/target/debug/deps/libitoa-3f192c06d1c819c3.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "11ce8129cbcd27070027e66451f8db428f208e5be04f4137d032bcf6102a3122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11ce8129cbcd27070027e66451f8db428f208e5be04f4137d032bcf6102a3122", kill_on_drop: false }`
[INFO] [stdout] 11ce8129cbcd27070027e66451f8db428f208e5be04f4137d032bcf6102a3122