[INFO] fetching crate mcai-workers 0.0.4...
[INFO] documenting mcai-workers-0.0.4 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate mcai-workers 0.0.4 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate mcai-workers 0.0.4 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mcai-workers 0.0.4
[INFO] finished tweaking crates.io crate mcai-workers 0.0.4
[INFO] tweaked toml for crates.io crate mcai-workers 0.0.4 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate crates.io crate mcai-workers 0.0.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f2217d19b73ab9c71c0922497dd209d79fa47f002c14590e40fef083a760885
[INFO] running `Command { std: "docker" "start" "-a" "4f2217d19b73ab9c71c0922497dd209d79fa47f002c14590e40fef083a760885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f2217d19b73ab9c71c0922497dd209d79fa47f002c14590e40fef083a760885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f2217d19b73ab9c71c0922497dd209d79fa47f002c14590e40fef083a760885", kill_on_drop: false }`
[INFO] [stdout] 4f2217d19b73ab9c71c0922497dd209d79fa47f002c14590e40fef083a760885
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "RUSTDOCFLAGS=--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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6421708d20171bae7138d8354d9dc7f6edc41721e9e6e51f4c7a3a938b61cdf9
[INFO] running `Command { std: "docker" "start" "-a" "6421708d20171bae7138d8354d9dc7f6edc41721e9e6e51f4c7a3a938b61cdf9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling syn v1.0.46
[INFO] [stderr]     Checking futures v0.1.30
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking futures-core v0.3.6
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling gimli v0.22.0
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling object v0.21.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling ascii v0.9.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking futures-io v0.3.6
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking futures-sink v0.3.6
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]    Compiling encoding_rs v0.8.24
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.20
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking ipnet v2.3.0
[INFO] [stderr]     Checking enquote v1.0.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking semver-parser v0.10.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking futures-task v0.3.6
[INFO] [stderr]     Checking futures-channel v0.3.6
[INFO] [stderr] error: could not compile `futures`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name futures /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.30/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="use_std"' --cfg 'feature="with-deprecated"' -C metadata=817b458fe0ca5160 -C extra-filename=-817b458fe0ca5160 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (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" "6421708d20171bae7138d8354d9dc7f6edc41721e9e6e51f4c7a3a938b61cdf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6421708d20171bae7138d8354d9dc7f6edc41721e9e6e51f4c7a3a938b61cdf9", kill_on_drop: false }`
[INFO] [stdout] 6421708d20171bae7138d8354d9dc7f6edc41721e9e6e51f4c7a3a938b61cdf9
