[INFO] fetching crate mongo_sync 0.1.0...
[INFO] documenting mongo_sync-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate mongo_sync 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mongo_sync 0.1.0 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 mongo_sync 0.1.0
[INFO] finished tweaking crates.io crate mongo_sync 0.1.0
[INFO] tweaked toml for crates.io crate mongo_sync 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate mongo_sync 0.1.0 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 }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] c8fd37ccab3d4193f0915c024e4b365cd10e3a28840db05ebe1f031849016f9e
[INFO] running `Command { std: "docker" "start" "-a" "c8fd37ccab3d4193f0915c024e4b365cd10e3a28840db05ebe1f031849016f9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8fd37ccab3d4193f0915c024e4b365cd10e3a28840db05ebe1f031849016f9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8fd37ccab3d4193f0915c024e4b365cd10e3a28840db05ebe1f031849016f9e", kill_on_drop: false }`
[INFO] [stdout] c8fd37ccab3d4193f0915c024e4b365cd10e3a28840db05ebe1f031849016f9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 1f3531db94cd4777678a63e09b66831f019da49d5b3a93028cc9c07b8ac3ff96
[INFO] running `Command { std: "docker" "start" "-a" "1f3531db94cd4777678a63e09b66831f019da49d5b3a93028cc9c07b8ac3ff96", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
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[INFO] [stderr]    Compiling darling_core v0.13.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
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[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]    Compiling tokio-macros v1.4.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
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[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.4
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling typed-builder v0.9.1
[INFO] [stderr]    Compiling darling_macro v0.13.0
[INFO] [stderr] error: could not compile `serde_derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.130/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=ee29cfd2e875517a -C extra-filename=-ee29cfd2e875517a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-5b34fa5e5ca537c0.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-a95288b535c7c6e8.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-0043a79d32b9b761.rlib --extern proc_macro --cap-lints allow --cfg underscore_consts --cfg ptr_addr_of` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1f3531db94cd4777678a63e09b66831f019da49d5b3a93028cc9c07b8ac3ff96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f3531db94cd4777678a63e09b66831f019da49d5b3a93028cc9c07b8ac3ff96", kill_on_drop: false }`
[INFO] [stdout] 1f3531db94cd4777678a63e09b66831f019da49d5b3a93028cc9c07b8ac3ff96