[INFO] fetching crate interledger-settlement-engines 0.2.0...
[INFO] documenting interledger-settlement-engines-0.2.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate interledger-settlement-engines 0.2.0 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate interledger-settlement-engines 0.2.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate interledger-settlement-engines 0.2.0
[INFO] finished tweaking crates.io crate interledger-settlement-engines 0.2.0
[INFO] tweaked toml for crates.io crate interledger-settlement-engines 0.2.0 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate crates.io crate interledger-settlement-engines 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d055bc2dbcf3890818369a51125260ce78864c9a7a2afb2ed22b7c02ae9480b
[INFO] running `Command { std: "docker" "start" "-a" "2d055bc2dbcf3890818369a51125260ce78864c9a7a2afb2ed22b7c02ae9480b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d055bc2dbcf3890818369a51125260ce78864c9a7a2afb2ed22b7c02ae9480b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d055bc2dbcf3890818369a51125260ce78864c9a7a2afb2ed22b7c02ae9480b", kill_on_drop: false }`
[INFO] [stdout] 2d055bc2dbcf3890818369a51125260ce78864c9a7a2afb2ed22b7c02ae9480b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fad5606c666636819b971a447787afb1931c9fb1baacfb4c2116eca669d4924
[INFO] running `Command { std: "docker" "start" "-a" "7fad5606c666636819b971a447787afb1931c9fb1baacfb4c2116eca669d4924", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling byteorder v1.3.2
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[INFO] [stderr]    Compiling num-derive v0.2.5
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[INFO] [stderr]     Checking lazy_static v0.2.11
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[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling unicase v1.4.2
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[INFO] [stderr]    Compiling unicase v2.5.1
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling semver v0.9.0
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[INFO] [stderr]     Checking lock_api v0.2.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[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-0.1.29/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=950314d9859ac145 -C extra-filename=-950314d9859ac145 --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" "7fad5606c666636819b971a447787afb1931c9fb1baacfb4c2116eca669d4924", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fad5606c666636819b971a447787afb1931c9fb1baacfb4c2116eca669d4924", kill_on_drop: false }`
[INFO] [stdout] 7fad5606c666636819b971a447787afb1931c9fb1baacfb4c2116eca669d4924
