[INFO] fetching crate crossbeam-channel 0.5.4...
[INFO] documenting crossbeam-channel-0.5.4 against master#e1df625306f4136949e02612406f0c60df6008f3 for pr-96676
[INFO] extracting crate crossbeam-channel 0.5.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate crossbeam-channel 0.5.4 on toolchain e1df625306f4136949e02612406f0c60df6008f3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate crossbeam-channel 0.5.4
[INFO] finished tweaking crates.io crate crossbeam-channel 0.5.4
[INFO] tweaked toml for crates.io crate crossbeam-channel 0.5.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate crossbeam-channel 0.5.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5210ea8999f5544a3292eafd5cd5f29d07628ac8dd05c3aec10b418176a53421
[INFO] running `Command { std: "docker" "start" "-a" "5210ea8999f5544a3292eafd5cd5f29d07628ac8dd05c3aec10b418176a53421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5210ea8999f5544a3292eafd5cd5f29d07628ac8dd05c3aec10b418176a53421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5210ea8999f5544a3292eafd5cd5f29d07628ac8dd05c3aec10b418176a53421", kill_on_drop: false }`
[INFO] [stdout] 5210ea8999f5544a3292eafd5cd5f29d07628ac8dd05c3aec10b418176a53421
[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=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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e20fa07067811c889f27c1f082836d2ceab656fb8c88dcf39f6da9e22b03c311
[INFO] running `Command { std: "docker" "start" "-a" "e20fa07067811c889f27c1f082836d2ceab656fb8c88dcf39f6da9e22b03c311", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]  Documenting crossbeam-channel v0.5.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.22s
[INFO] running `Command { std: "docker" "inspect" "e20fa07067811c889f27c1f082836d2ceab656fb8c88dcf39f6da9e22b03c311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e20fa07067811c889f27c1f082836d2ceab656fb8c88dcf39f6da9e22b03c311", kill_on_drop: false }`
[INFO] [stdout] e20fa07067811c889f27c1f082836d2ceab656fb8c88dcf39f6da9e22b03c311
[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" "RUSTFLAGS=--cap-lints=forbid" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "+e1df625306f4136949e02612406f0c60df6008f3" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 2bcf16633bf0ff27996c0fac5af81ca9725fbd43b9dd2f2c8b31f49696aff7c4
[INFO] running `Command { std: "docker" "start" "-a" "2bcf16633bf0ff27996c0fac5af81ca9725fbd43b9dd2f2c8b31f49696aff7c4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]  Documenting crossbeam-channel v0.5.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.79s
[INFO] running `Command { std: "docker" "inspect" "2bcf16633bf0ff27996c0fac5af81ca9725fbd43b9dd2f2c8b31f49696aff7c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bcf16633bf0ff27996c0fac5af81ca9725fbd43b9dd2f2c8b31f49696aff7c4", kill_on_drop: false }`
[INFO] [stdout] 2bcf16633bf0ff27996c0fac5af81ca9725fbd43b9dd2f2c8b31f49696aff7c4