[INFO] fetching crate clap_derive 3.0.0-beta.1...
[INFO] documenting clap_derive-3.0.0-beta.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate clap_derive 3.0.0-beta.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate clap_derive 3.0.0-beta.1 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate clap_derive 3.0.0-beta.1
[INFO] finished tweaking crates.io crate clap_derive 3.0.0-beta.1
[INFO] tweaked toml for crates.io crate clap_derive 3.0.0-beta.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate clap_derive 3.0.0-beta.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trybuild v1.0.26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] be4a8e2eeead7e45e2789dd925d581f66324403aa0c7e15577b413799cc3a8a3
[INFO] running `Command { std: "docker" "start" "-a" "be4a8e2eeead7e45e2789dd925d581f66324403aa0c7e15577b413799cc3a8a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be4a8e2eeead7e45e2789dd925d581f66324403aa0c7e15577b413799cc3a8a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be4a8e2eeead7e45e2789dd925d581f66324403aa0c7e15577b413799cc3a8a3", kill_on_drop: false }`
[INFO] [stdout] be4a8e2eeead7e45e2789dd925d581f66324403aa0c7e15577b413799cc3a8a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 898995ff2408ccd47b8780d161d5ab46b28bf82557275a5eb57f7bf55b4801bd
[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" "898995ff2408ccd47b8780d161d5ab46b28bf82557275a5eb57f7bf55b4801bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]     Checking quote v1.0.4
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]  Documenting clap_derive v3.0.0-beta.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.16s
[INFO] running `Command { std: "docker" "inspect" "898995ff2408ccd47b8780d161d5ab46b28bf82557275a5eb57f7bf55b4801bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "898995ff2408ccd47b8780d161d5ab46b28bf82557275a5eb57f7bf55b4801bd", kill_on_drop: false }`
[INFO] [stdout] 898995ff2408ccd47b8780d161d5ab46b28bf82557275a5eb57f7bf55b4801bd