[INFO] cloning repository https://github.com/mercur3/synkronizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mercur3/synkronizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmercur3%2Fsynkronizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmercur3%2Fsynkronizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a1e960463a46fe380ff8b78531761290339d39b
[INFO] documenting mercur3/synkronizer against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmercur3%2Fsynkronizer" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mercur3/synkronizer on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mercur3/synkronizer
[INFO] finished tweaking git repo https://github.com/mercur3/synkronizer
[INFO] tweaked toml for git repo https://github.com/mercur3/synkronizer written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mercur3/synkronizer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "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] a9bc0ea69f64b9211aa1fbfbc224aae49ce73f2ca15218f5a5f3474aa8b5c0a3
[INFO] running `Command { std: "docker" "start" "-a" "a9bc0ea69f64b9211aa1fbfbc224aae49ce73f2ca15218f5a5f3474aa8b5c0a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9bc0ea69f64b9211aa1fbfbc224aae49ce73f2ca15218f5a5f3474aa8b5c0a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9bc0ea69f64b9211aa1fbfbc224aae49ce73f2ca15218f5a5f3474aa8b5c0a3", kill_on_drop: false }`
[INFO] [stdout] a9bc0ea69f64b9211aa1fbfbc224aae49ce73f2ca15218f5a5f3474aa8b5c0a3
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 397d8ec590f2682efd6772a8c73a45858cf0f92df66d31efc8ccdd9760777978
[INFO] running `Command { std: "docker" "start" "-a" "397d8ec590f2682efd6772a8c73a45858cf0f92df66d31efc8ccdd9760777978", kill_on_drop: false }`
[INFO] [stderr]     Checking libsynkronizer v0.1.0 (/opt/rustwide/workdir/libsynkronizer)
[INFO] [stderr]  Documenting libsynkronizer v0.1.0 (/opt/rustwide/workdir/libsynkronizer)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> libsynkronizer/src/sync.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 |             x => Err(()),
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting synkronizer v1.0.0 (/opt/rustwide/workdir/app)
[INFO] [stderr]  Documenting app-gtk v0.1.0 (/opt/rustwide/workdir/app-gtk)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.23s
[INFO] running `Command { std: "docker" "inspect" "397d8ec590f2682efd6772a8c73a45858cf0f92df66d31efc8ccdd9760777978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "397d8ec590f2682efd6772a8c73a45858cf0f92df66d31efc8ccdd9760777978", kill_on_drop: false }`
[INFO] [stdout] 397d8ec590f2682efd6772a8c73a45858cf0f92df66d31efc8ccdd9760777978
[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" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", 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] 4bbc2ce7e49a110b4232f2bd940c235c3b6a8ce8f90889d7bc32c1264b64b657
[INFO] running `Command { std: "docker" "start" "-a" "4bbc2ce7e49a110b4232f2bd940c235c3b6a8ce8f90889d7bc32c1264b64b657", kill_on_drop: false }`
[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
[INFO] running `Command { std: "docker" "inspect" "4bbc2ce7e49a110b4232f2bd940c235c3b6a8ce8f90889d7bc32c1264b64b657", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bbc2ce7e49a110b4232f2bd940c235c3b6a8ce8f90889d7bc32c1264b64b657", kill_on_drop: false }`
[INFO] [stdout] 4bbc2ce7e49a110b4232f2bd940c235c3b6a8ce8f90889d7bc32c1264b64b657