[INFO] fetching crate concat_strs 1.0.2...
[INFO] documenting concat_strs-1.0.2 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate concat_strs 1.0.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate concat_strs 1.0.2 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concat_strs 1.0.2
[INFO] finished tweaking crates.io crate concat_strs 1.0.2
[INFO] tweaked toml for crates.io crate concat_strs 1.0.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded concat_strs_impl v1.0.1
[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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8b62b1e9bb75c8c57826dac52b0eee4e6cf8a0bd5cb2bac56b5e25478775f6a
[INFO] running `Command { std: "docker" "start" "-a" "c8b62b1e9bb75c8c57826dac52b0eee4e6cf8a0bd5cb2bac56b5e25478775f6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8b62b1e9bb75c8c57826dac52b0eee4e6cf8a0bd5cb2bac56b5e25478775f6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8b62b1e9bb75c8c57826dac52b0eee4e6cf8a0bd5cb2bac56b5e25478775f6a", kill_on_drop: false }`
[INFO] [stdout] c8b62b1e9bb75c8c57826dac52b0eee4e6cf8a0bd5cb2bac56b5e25478775f6a
[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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 351d392cd0b4caa329efd090d31dd329860471e424cf90db4c505c9716de65c5
[INFO] running `Command { std: "docker" "start" "-a" "351d392cd0b4caa329efd090d31dd329860471e424cf90db4c505c9716de65c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling concat_strs_impl v1.0.1
[INFO] [stderr]  Documenting concat_strs v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.88s
[INFO] running `Command { std: "docker" "inspect" "351d392cd0b4caa329efd090d31dd329860471e424cf90db4c505c9716de65c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "351d392cd0b4caa329efd090d31dd329860471e424cf90db4c505c9716de65c5", kill_on_drop: false }`
[INFO] [stdout] 351d392cd0b4caa329efd090d31dd329860471e424cf90db4c505c9716de65c5
