[INFO] cloning repository https://github.com/afandian/folktunefinder-abc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/afandian/folktunefinder-abc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fafandian%2Ffolktunefinder-abc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fafandian%2Ffolktunefinder-abc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] edf2a0fa212e35e940d2d4d91ae6b66fbeec182b
[INFO] documenting afandian/folktunefinder-abc against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fafandian%2Ffolktunefinder-abc" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/afandian/folktunefinder-abc on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/afandian/folktunefinder-abc
[INFO] finished tweaking git repo https://github.com/afandian/folktunefinder-abc
[INFO] tweaked toml for git repo https://github.com/afandian/folktunefinder-abc written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/afandian/folktunefinder-abc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.46.0" "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] b2f34278372a0e3745ee27fbb402d32d305f700df02b34d32d7d8f5970d11a98
[INFO] running `Command { std: "docker" "start" "-a" "b2f34278372a0e3745ee27fbb402d32d305f700df02b34d32d7d8f5970d11a98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2f34278372a0e3745ee27fbb402d32d305f700df02b34d32d7d8f5970d11a98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2f34278372a0e3745ee27fbb402d32d305f700df02b34d32d7d8f5970d11a98", kill_on_drop: false }`
[INFO] [stdout] b2f34278372a0e3745ee27fbb402d32d305f700df02b34d32d7d8f5970d11a98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 524538f39eca64a979c7fe1cdf93fa2c65d8d3bbc96b8f555afc4ac2531accd2
[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" "524538f39eca64a979c7fe1cdf93fa2c65d8d3bbc96b8f555afc4ac2531accd2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]     Checking unidecode v0.3.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking memchr v2.1.2
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]     Checking pest v2.0.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking url v0.2.38
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking regex v0.2.5
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]    Compiling pest_meta v2.0.3
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]     Checking tiny_http v0.5.9
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling pest_derive v2.0.1
[INFO] [stderr]     Checking serde_json v1.0.33
[INFO] [stderr]     Checking handlebars v1.1.0
[INFO] [stderr]  Documenting folktunefinder-abc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.92s
[INFO] running `Command { std: "docker" "inspect" "524538f39eca64a979c7fe1cdf93fa2c65d8d3bbc96b8f555afc4ac2531accd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "524538f39eca64a979c7fe1cdf93fa2c65d8d3bbc96b8f555afc4ac2531accd2", kill_on_drop: false }`
[INFO] [stdout] 524538f39eca64a979c7fe1cdf93fa2c65d8d3bbc96b8f555afc4ac2531accd2