[INFO] cloning repository https://github.com/Aaron1011/let_else
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aaron1011/let_else" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAaron1011%2Flet_else", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAaron1011%2Flet_else'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34967b82778ff8383b5f43947d075e528aed4c25
[INFO] documenting Aaron1011/let_else 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%2FAaron1011%2Flet_else" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Aaron1011/let_else 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/Aaron1011/let_else
[INFO] finished tweaking git repo https://github.com/Aaron1011/let_else
[INFO] tweaked toml for git repo https://github.com/Aaron1011/let_else written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/Aaron1011/let_else 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-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] [stdout] 07fe8e929332094105c0d0b1b6cd8824eaabe6f62ca0951459a20b4a68318ad7
[INFO] running `Command { std: "docker" "start" "-a" "07fe8e929332094105c0d0b1b6cd8824eaabe6f62ca0951459a20b4a68318ad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07fe8e929332094105c0d0b1b6cd8824eaabe6f62ca0951459a20b4a68318ad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07fe8e929332094105c0d0b1b6cd8824eaabe6f62ca0951459a20b4a68318ad7", kill_on_drop: false }`
[INFO] [stdout] 07fe8e929332094105c0d0b1b6cd8824eaabe6f62ca0951459a20b4a68318ad7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] [stdout] 1a4507b55bdfbb85592cea7b85a18bbe5fac305d9016ac5e38a908b855f7cddb
[INFO] running `Command { std: "docker" "start" "-a" "1a4507b55bdfbb85592cea7b85a18bbe5fac305d9016ac5e38a908b855f7cddb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]  Documenting let_else v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.27s
[INFO] running `Command { std: "docker" "inspect" "1a4507b55bdfbb85592cea7b85a18bbe5fac305d9016ac5e38a908b855f7cddb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a4507b55bdfbb85592cea7b85a18bbe5fac305d9016ac5e38a908b855f7cddb", kill_on_drop: false }`
[INFO] [stdout] 1a4507b55bdfbb85592cea7b85a18bbe5fac305d9016ac5e38a908b855f7cddb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] [stdout] 43d2dcf28a5f7962aa240a98840bb8f0eae415cc2871ad17c3d66a8bee46225a
[INFO] running `Command { std: "docker" "start" "-a" "43d2dcf28a5f7962aa240a98840bb8f0eae415cc2871ad17c3d66a8bee46225a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]  Documenting let_else v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.80s
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "43d2dcf28a5f7962aa240a98840bb8f0eae415cc2871ad17c3d66a8bee46225a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43d2dcf28a5f7962aa240a98840bb8f0eae415cc2871ad17c3d66a8bee46225a", kill_on_drop: false }`
[INFO] [stdout] 43d2dcf28a5f7962aa240a98840bb8f0eae415cc2871ad17c3d66a8bee46225a