[INFO] fetching crate mbus 0.3.5...
[INFO] documenting mbus-0.3.5 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate mbus 0.3.5 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate mbus 0.3.5 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mbus 0.3.5
[INFO] finished tweaking crates.io crate mbus 0.3.5
[INFO] tweaked toml for crates.io crate mbus 0.3.5 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate crates.io crate mbus 0.3.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syntex_errors v0.42.0
[INFO] [stderr]   Downloaded pnet_macros_support v0.26.0
[INFO] [stderr]   Downloaded bitflags v0.5.0
[INFO] [stderr]   Downloaded tokio-core v0.1.18
[INFO] [stderr]   Downloaded ipnetwork v0.16.0
[INFO] [stderr]   Downloaded pnet_datalink v0.26.0
[INFO] [stderr]   Downloaded tiny_http v0.6.3
[INFO] [stderr]   Downloaded groupable v0.2.0
[INFO] [stderr]   Downloaded nickel v0.11.0
[INFO] [stderr]   Downloaded pnet_packet v0.26.0
[INFO] [stderr]   Downloaded pnet_transport v0.26.0
[INFO] [stderr]   Downloaded syntex v0.42.2
[INFO] [stderr]   Downloaded pnet v0.26.0
[INFO] [stderr]   Downloaded unsafe-any v0.4.2
[INFO] [stderr]   Downloaded typemap v0.3.3
[INFO] [stderr]   Downloaded plugin v0.2.6
[INFO] [stderr]   Downloaded modifier v0.1.0
[INFO] [stderr]   Downloaded syntex_pos v0.42.0
[INFO] [stderr]   Downloaded pnet_macros v0.26.0
[INFO] [stderr]   Downloaded syntex_syntax v0.42.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.19
[INFO] [stderr]   Downloaded backtrace v0.3.58
[INFO] [stderr]   Downloaded pnet_sys v0.26.0
[INFO] [stderr]   Downloaded object v0.23.0
[INFO] [stderr]   Downloaded buf_redux v0.8.4
[INFO] [stderr]   Downloaded mime_guess v1.8.8
[INFO] [stderr]   Downloaded nix v0.11.1
[INFO] [stderr]   Downloaded iron v0.6.1
[INFO] [stderr]   Downloaded ascii v0.8.7
[INFO] [stderr]   Downloaded pnet_base v0.26.0
[INFO] [stderr]   Downloaded chunked_transfer v0.3.1
[INFO] [stderr]   Downloaded httpd-util v0.1.6
[INFO] [stderr]   Downloaded twoway v0.1.8
[INFO] [stderr]   Downloaded mbus-api v0.3.5
[INFO] [stderr]   Downloaded mustache v0.9.0
[INFO] [stderr]   Downloaded unicode-xid v0.0.3
[INFO] [stderr]   Downloaded multipart v0.16.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 685ed538ac3caf9473286758fe852533a938ddf2cf22ea83359536f67f950dec
[INFO] running `Command { std: "docker" "start" "-a" "685ed538ac3caf9473286758fe852533a938ddf2cf22ea83359536f67f950dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "685ed538ac3caf9473286758fe852533a938ddf2cf22ea83359536f67f950dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "685ed538ac3caf9473286758fe852533a938ddf2cf22ea83359536f67f950dec", kill_on_drop: false }`
[INFO] [stdout] 685ed538ac3caf9473286758fe852533a938ddf2cf22ea83359536f67f950dec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1b7a723f195ab07113bb8583f2be5ba453f0166e117b381cb66b7bbb1f62df7
[INFO] running `Command { std: "docker" "start" "-a" "f1b7a723f195ab07113bb8583f2be5ba453f0166e117b381cb66b7bbb1f62df7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling httparse v1.4.0
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking pnet_base v0.26.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]    Compiling hyper-openssl v0.8.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling pnet v0.26.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking tower-layer v0.3.1
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking rustc-demangle v0.1.19
[INFO] [stderr]     Checking chunked_transfer v0.3.1
[INFO] [stderr]     Checking ascii v0.8.7
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]     Checking xml-rs v0.8.3
[INFO] [stderr]     Checking groupable v0.2.0
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking pnet_macros_support v0.26.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr] error: could not compile `cc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name cc --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cc-1.0.67/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=a9a197744028a34f -C extra-filename=-a9a197744028a34f --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] running `Command { std: "docker" "inspect" "f1b7a723f195ab07113bb8583f2be5ba453f0166e117b381cb66b7bbb1f62df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b7a723f195ab07113bb8583f2be5ba453f0166e117b381cb66b7bbb1f62df7", kill_on_drop: false }`
[INFO] [stdout] f1b7a723f195ab07113bb8583f2be5ba453f0166e117b381cb66b7bbb1f62df7