[INFO] fetching crate libipld-core 0.12.0...
[INFO] checking libipld-core-0.12.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate libipld-core 0.12.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate libipld-core 0.12.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libipld-core 0.12.0
[INFO] finished tweaking crates.io crate libipld-core 0.12.0
[INFO] tweaked toml for crates.io crate libipld-core 0.12.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 938715635c77d42f6e84d4b3cfc7b7a3994ef2bfcc0ed09a6ba9f31aa1e4a11a
[INFO] running `Command { std: "docker" "start" "-a" "938715635c77d42f6e84d4b3cfc7b7a3994ef2bfcc0ed09a6ba9f31aa1e4a11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "938715635c77d42f6e84d4b3cfc7b7a3994ef2bfcc0ed09a6ba9f31aa1e4a11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "938715635c77d42f6e84d4b3cfc7b7a3994ef2bfcc0ed09a6ba9f31aa1e4a11a", kill_on_drop: false }`
[INFO] [stdout] 938715635c77d42f6e84d4b3cfc7b7a3994ef2bfcc0ed09a6ba9f31aa1e4a11a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98f878095b8fe3b6abdf3fe6212a8352c2dcc2052ae606b4a0c4a823ec69a731
[INFO] running `Command { std: "docker" "start" "-a" "98f878095b8fe3b6abdf3fe6212a8352c2dcc2052ae606b4a0c4a823ec69a731", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]     Checking cpufeatures v0.1.5
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]     Checking unsigned-varint v0.7.0
[INFO] [stderr]     Checking base-x v0.2.8
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]     Checking blake2s_simd v0.5.11
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking sha2 v0.9.5
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.10
[INFO] [stderr]     Checking data-encoding-macro v0.1.12
[INFO] [stderr]     Checking multibase v0.9.1
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling proc-macro-crate v1.0.0
[INFO] [stderr]    Compiling multihash-derive v0.7.2
[INFO] [stderr]     Checking multihash v0.14.0
[INFO] [stderr]     Checking cid v0.7.0
[INFO] [stderr]     Checking libipld-core v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.72s
[INFO] running `Command { std: "docker" "inspect" "98f878095b8fe3b6abdf3fe6212a8352c2dcc2052ae606b4a0c4a823ec69a731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98f878095b8fe3b6abdf3fe6212a8352c2dcc2052ae606b4a0c4a823ec69a731", kill_on_drop: false }`
[INFO] [stdout] 98f878095b8fe3b6abdf3fe6212a8352c2dcc2052ae606b4a0c4a823ec69a731