[INFO] fetching crate tiny-cid 0.3.0...
[INFO] checking tiny-cid-0.3.0 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate tiny-cid 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate tiny-cid 0.3.0 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tiny-cid 0.3.0
[INFO] finished tweaking crates.io crate tiny-cid 0.3.0
[INFO] tweaked toml for crates.io crate tiny-cid 0.3.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c8dc5d70ed54f082f6c6449b827e07b9a91d6ff631fb51a83f5938abc9017d2
[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" "0c8dc5d70ed54f082f6c6449b827e07b9a91d6ff631fb51a83f5938abc9017d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c8dc5d70ed54f082f6c6449b827e07b9a91d6ff631fb51a83f5938abc9017d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c8dc5d70ed54f082f6c6449b827e07b9a91d6ff631fb51a83f5938abc9017d2", kill_on_drop: false }`
[INFO] [stdout] 0c8dc5d70ed54f082f6c6449b827e07b9a91d6ff631fb51a83f5938abc9017d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57a0211068881b1987c82687d0abf8f879d69577afdac0af084d84f4a0de207b
[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" "57a0211068881b1987c82687d0abf8f879d69577afdac0af084d84f4a0de207b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]     Checking cpufeatures v0.1.1
[INFO] [stderr]     Checking base-x v0.2.8
[INFO] [stderr]     Checking unsigned-varint v0.5.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling blake3 v0.3.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking blake2s_simd v0.5.11
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[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 rand_core v0.5.1
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking sha2 v0.9.4
[INFO] [stderr]     Checking sha-1 v0.9.5
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking strobe-rs v0.5.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.9
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]     Checking data-encoding-macro v0.1.10
[INFO] [stderr]    Compiling tiny-multihash-derive v0.5.0
[INFO] [stderr]     Checking multibase v0.8.0
[INFO] [stderr]     Checking tiny-multihash v0.5.0
[INFO] [stderr]     Checking tiny-cid v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.73s
[INFO] running `Command { std: "docker" "inspect" "57a0211068881b1987c82687d0abf8f879d69577afdac0af084d84f4a0de207b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57a0211068881b1987c82687d0abf8f879d69577afdac0af084d84f4a0de207b", kill_on_drop: false }`
[INFO] [stdout] 57a0211068881b1987c82687d0abf8f879d69577afdac0af084d84f4a0de207b