[INFO] cloning repository https://github.com/sunfishcode/misc-tests
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sunfishcode/misc-tests" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunfishcode%2Fmisc-tests", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunfishcode%2Fmisc-tests'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a696b1599589e6394b30e0784b980a5ff3d73517
[INFO] documenting sunfishcode/misc-tests against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunfishcode%2Fmisc-tests" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sunfishcode/misc-tests 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 git repo https://github.com/sunfishcode/misc-tests
[INFO] finished tweaking git repo https://github.com/sunfishcode/misc-tests
[INFO] tweaked toml for git repo https://github.com/sunfishcode/misc-tests written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/sunfishcode/misc-tests 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 901539b4051e6f7c28c12fddf21d80396f79b92c356456b4fe0ab2eb17a83a40
[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" "901539b4051e6f7c28c12fddf21d80396f79b92c356456b4fe0ab2eb17a83a40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "901539b4051e6f7c28c12fddf21d80396f79b92c356456b4fe0ab2eb17a83a40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "901539b4051e6f7c28c12fddf21d80396f79b92c356456b4fe0ab2eb17a83a40", kill_on_drop: false }`
[INFO] [stdout] 901539b4051e6f7c28c12fddf21d80396f79b92c356456b4fe0ab2eb17a83a40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 6d34ef90a47363af99af8bfc3c8047b065987485cf8cafc3f62891d896c99fb1
[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" "6d34ef90a47363af99af8bfc3c8047b065987485cf8cafc3f62891d896c99fb1", kill_on_drop: false }`
[INFO] [stderr]     Checking more-asserts v0.2.1
[INFO] [stderr]     Checking wasi v0.7.0
[INFO] [stderr]     Checking wasi-misc-tests v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting wasi-misc-tests v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `wasi-misc-tests`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name readlink src/bin/readlink.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-009872d6a948af31.rmeta --extern more_asserts=/opt/rustwide/target/debug/deps/libmore_asserts-613845732d24bf85.rmeta --extern wasi=/opt/rustwide/target/debug/deps/libwasi-bf500a4325395a79.rmeta --extern wasi_misc_tests=/opt/rustwide/target/debug/deps/libwasi_misc_tests-f506830bef384430.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6d34ef90a47363af99af8bfc3c8047b065987485cf8cafc3f62891d896c99fb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d34ef90a47363af99af8bfc3c8047b065987485cf8cafc3f62891d896c99fb1", kill_on_drop: false }`
[INFO] [stdout] 6d34ef90a47363af99af8bfc3c8047b065987485cf8cafc3f62891d896c99fb1