[INFO] cloning repository https://github.com/imbolc/rust-derive-macro-guide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imbolc/rust-derive-macro-guide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbolc%2Frust-derive-macro-guide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbolc%2Frust-derive-macro-guide'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb1564ad3b42f7e94ad21143ae3017f533c30a7a
[INFO] documenting imbolc/rust-derive-macro-guide against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbolc%2Frust-derive-macro-guide" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imbolc/rust-derive-macro-guide 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 git repo https://github.com/imbolc/rust-derive-macro-guide
[INFO] finished tweaking git repo https://github.com/imbolc/rust-derive-macro-guide
[INFO] tweaked toml for git repo https://github.com/imbolc/rust-derive-macro-guide written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/imbolc/rust-derive-macro-guide 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 }`
[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] 99d0bdcc13dc6d7488a30a765c0f600b840c0176ca92fcd5216854e127b06fb5
[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" "99d0bdcc13dc6d7488a30a765c0f600b840c0176ca92fcd5216854e127b06fb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99d0bdcc13dc6d7488a30a765c0f600b840c0176ca92fcd5216854e127b06fb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99d0bdcc13dc6d7488a30a765c0f600b840c0176ca92fcd5216854e127b06fb5", kill_on_drop: false }`
[INFO] [stdout] 99d0bdcc13dc6d7488a30a765c0f600b840c0176ca92fcd5216854e127b06fb5
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9ca04b7b3dde30c0ce28681973ffc541b9f83f5fa01d07d021b4f5d224b38b27
[INFO] running `Command { std: "docker" "start" "-a" "9ca04b7b3dde30c0ce28681973ffc541b9f83f5fa01d07d021b4f5d224b38b27", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling darling_core v0.13.0
[INFO] [stderr]    Compiling darling_macro v0.13.0
[INFO] [stderr]    Compiling darling v0.13.0
[INFO] [stderr]    Compiling mytrait-derive v0.1.0 (/opt/rustwide/workdir/mytrait-derive)
[INFO] [stderr]  Documenting derive-mytrait v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.17s
[INFO] running `Command { std: "docker" "inspect" "9ca04b7b3dde30c0ce28681973ffc541b9f83f5fa01d07d021b4f5d224b38b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ca04b7b3dde30c0ce28681973ffc541b9f83f5fa01d07d021b4f5d224b38b27", kill_on_drop: false }`
[INFO] [stdout] 9ca04b7b3dde30c0ce28681973ffc541b9f83f5fa01d07d021b4f5d224b38b27
[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=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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" "+1.61.0" "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] 2a7264446bbd1430154b53e6a60de846b3941f86952c9506ec0b1531a0fe541e
[INFO] running `Command { std: "docker" "start" "-a" "2a7264446bbd1430154b53e6a60de846b3941f86952c9506ec0b1531a0fe541e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling darling_core v0.13.0
[INFO] [stderr]    Compiling darling_macro v0.13.0
[INFO] [stderr]    Compiling darling v0.13.0
[INFO] [stderr]    Compiling mytrait-derive v0.1.0 (/opt/rustwide/workdir/mytrait-derive)
[INFO] [stderr]  Documenting derive-mytrait v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.51s
[INFO] running `Command { std: "docker" "inspect" "2a7264446bbd1430154b53e6a60de846b3941f86952c9506ec0b1531a0fe541e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a7264446bbd1430154b53e6a60de846b3941f86952c9506ec0b1531a0fe541e", kill_on_drop: false }`
[INFO] [stdout] 2a7264446bbd1430154b53e6a60de846b3941f86952c9506ec0b1531a0fe541e