[INFO] fetching crate bupstash 0.1.1...
[INFO] documenting bupstash-0.1.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate bupstash 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate bupstash 0.1.1 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 crates.io crate bupstash 0.1.1
[INFO] finished tweaking crates.io crate bupstash 0.1.1
[INFO] tweaked toml for crates.io crate bupstash 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate bupstash 0.1.1 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded codemap v0.1.3
[INFO] [stderr]   Downloaded codemap-diagnostic v0.1.1
[INFO] [stderr]   Downloaded serde_bare v0.3.0
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a81c1b607ff139d70170ec230b3f820b8d4537d9d0295912e553ab7985498cd8
[INFO] running `Command { std: "docker" "start" "-a" "a81c1b607ff139d70170ec230b3f820b8d4537d9d0295912e553ab7985498cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a81c1b607ff139d70170ec230b3f820b8d4537d9d0295912e553ab7985498cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a81c1b607ff139d70170ec230b3f820b8d4537d9d0295912e553ab7985498cd8", kill_on_drop: false }`
[INFO] [stdout] a81c1b607ff139d70170ec230b3f820b8d4537d9d0295912e553ab7985498cd8
[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" "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] 3dc2f1bc5bb0e5c97563b9a6cac31a506b3fc280347e91440beb965d4f7b567e
[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" "3dc2f1bc5bb0e5c97563b9a6cac31a506b3fc280347e91440beb965d4f7b567e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking codemap v0.1.3
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]     Checking path-clean v0.1.0
[INFO] [stderr]     Checking shlex v0.1.1
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]    Compiling bupstash v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking filetime v0.2.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking codemap-diagnostic v0.1.1
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking tar v0.4.29
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]    Compiling libsqlite3-sys v0.18.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking rusqlite v0.23.1
[INFO] [stderr]     Checking serde_bare v0.3.0
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking zstd-safe v2.0.5+zstd.1.4.5
[INFO] [stderr]     Checking zstd v0.5.3+zstd.1.4.5
[INFO] [stderr]  Documenting bupstash v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 44s
[INFO] running `Command { std: "docker" "inspect" "3dc2f1bc5bb0e5c97563b9a6cac31a506b3fc280347e91440beb965d4f7b567e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dc2f1bc5bb0e5c97563b9a6cac31a506b3fc280347e91440beb965d4f7b567e", kill_on_drop: false }`
[INFO] [stdout] 3dc2f1bc5bb0e5c97563b9a6cac31a506b3fc280347e91440beb965d4f7b567e