[INFO] cloning repository https://github.com/themeliolabs/melminter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/themeliolabs/melminter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemeliolabs%2Fmelminter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemeliolabs%2Fmelminter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33eca57324bcde6c638af57d84966d4c32fea7f7
[INFO] documenting themeliolabs/melminter against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemeliolabs%2Fmelminter" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/themeliolabs/melminter 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 git repo https://github.com/themeliolabs/melminter
[INFO] finished tweaking git repo https://github.com/themeliolabs/melminter
[INFO] tweaked toml for git repo https://github.com/themeliolabs/melminter written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/themeliolabs/melminter 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] 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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1b4f308587322de9e6c45475049a147c9f048378ddf5f60affd44a42751b2b0d
[INFO] running `Command { std: "docker" "start" "-a" "1b4f308587322de9e6c45475049a147c9f048378ddf5f60affd44a42751b2b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b4f308587322de9e6c45475049a147c9f048378ddf5f60affd44a42751b2b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b4f308587322de9e6c45475049a147c9f048378ddf5f60affd44a42751b2b0d", kill_on_drop: false }`
[INFO] [stdout] 1b4f308587322de9e6c45475049a147c9f048378ddf5f60affd44a42751b2b0d
[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" "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] 41f22f856d8a0fcc2e5140e4787b89bc13c83e76a44f8b82dcfc24169bff8848
[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" "41f22f856d8a0fcc2e5140e4787b89bc13c83e76a44f8b82dcfc24169bff8848", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling http-types v2.11.1
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking futures-micro v0.3.1
[INFO] [stderr]     Checking infer v0.2.3
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking defmac v0.2.1
[INFO] [stderr]     Checking ethnum v1.0.3
[INFO] [stderr]     Checking by_address v1.0.4
[INFO] [stderr]     Checking min-max-heap v1.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]     Checking sharded-slab v0.1.3
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]     Checking rtrb v0.1.4
[INFO] [stderr]     Checking ed25519 v1.2.0
[INFO] [stderr]     Checking async-oneshot v0.4.2
[INFO] [stderr]     Checking async-dup v1.2.2
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]     Checking object v0.26.0
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking futures-channel v0.3.16
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking bitvec v0.20.4
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking signal-hook v0.3.9
[INFO] [stderr]     Checking universal-hash v0.4.1
[INFO] [stderr]     Checking crypto-mac v0.10.1
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking byte-pool v0.2.3
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling syn-mid v0.5.3
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling derive_arbitrary v1.0.1
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling serde_repr v0.1.7
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking format_num v0.1.0
[INFO] [stderr]     Checking tabwriter v1.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]     Checking futures-intrusive v0.4.0
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]     Checking futures-util v0.3.16
[INFO] [stderr] error: could not compile `object`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name object --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/object-0.26.0/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="archive"' --cfg 'feature="coff"' --cfg 'feature="elf"' --cfg 'feature="macho"' --cfg 'feature="pe"' --cfg 'feature="read_core"' --cfg 'feature="unaligned"' -C metadata=a001bf5295b7cb8e -C extra-filename=-a001bf5295b7cb8e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-df16d2ab8eb23f89.rmeta --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" "41f22f856d8a0fcc2e5140e4787b89bc13c83e76a44f8b82dcfc24169bff8848", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f22f856d8a0fcc2e5140e4787b89bc13c83e76a44f8b82dcfc24169bff8848", kill_on_drop: false }`
[INFO] [stdout] 41f22f856d8a0fcc2e5140e4787b89bc13c83e76a44f8b82dcfc24169bff8848