[INFO] fetching crate ipld-block-builder 0.4.1...
[INFO] checking ipld-block-builder-0.4.1 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate ipld-block-builder 0.4.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ipld-block-builder 0.4.1 on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ipld-block-builder 0.4.1
[INFO] finished tweaking crates.io crate ipld-block-builder 0.4.1
[INFO] tweaked toml for crates.io crate ipld-block-builder 0.4.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cached v0.12.0
[INFO] [stderr]   Downloaded libipld-cbor v0.3.0
[INFO] [stderr]   Downloaded libipld-core v0.3.1
[INFO] [stderr]   Downloaded libipld-macro v0.3.0
[INFO] [stderr]   Downloaded libipld-cbor-derive v0.3.0
[INFO] [stderr]   Downloaded libipld v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6739c7df5c1c0d86de612a8bff1c8e2419700b1ecd3a349d9a17c73ff0ae56f9
[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" "6739c7df5c1c0d86de612a8bff1c8e2419700b1ecd3a349d9a17c73ff0ae56f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6739c7df5c1c0d86de612a8bff1c8e2419700b1ecd3a349d9a17c73ff0ae56f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6739c7df5c1c0d86de612a8bff1c8e2419700b1ecd3a349d9a17c73ff0ae56f9", kill_on_drop: false }`
[INFO] [stdout] 6739c7df5c1c0d86de612a8bff1c8e2419700b1ecd3a349d9a17c73ff0ae56f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53caa5235446bbac12755af60d01043bd9055024b508ece8d7dc68d09675e3ea
[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" "53caa5235446bbac12755af60d01043bd9055024b508ece8d7dc68d09675e3ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]    Compiling data-encoding v2.3.1
[INFO] [stderr]     Checking base-x v0.2.8
[INFO] [stderr]     Checking unsigned-varint v0.5.1
[INFO] [stderr]     Checking unsigned-varint v0.3.3
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking cached v0.12.0
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]     Checking blake2s_simd v0.5.11
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr]     Checking sha-1 v0.9.2
[INFO] [stderr]     Checking multihash v0.11.4
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling libipld-cbor-derive v0.3.0
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]     Checking async-std v1.7.0
[INFO] [stderr]     Checking data-encoding-macro v0.1.10
[INFO] [stderr]     Checking multibase v0.8.0
[INFO] [stderr]     Checking cid v0.5.1
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking libipld-core v0.3.1
[INFO] [stderr]     Checking libipld-cbor v0.3.0
[INFO] [stderr]     Checking libipld-macro v0.3.0
[INFO] [stderr]     Checking libipld v0.3.1
[INFO] [stderr]     Checking ipld-block-builder v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.77s
[INFO] running `Command { std: "docker" "inspect" "53caa5235446bbac12755af60d01043bd9055024b508ece8d7dc68d09675e3ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53caa5235446bbac12755af60d01043bd9055024b508ece8d7dc68d09675e3ea", kill_on_drop: false }`
[INFO] [stdout] 53caa5235446bbac12755af60d01043bd9055024b508ece8d7dc68d09675e3ea