[INFO] cloning repository https://github.com/pop-os/upgrade
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pop-os/upgrade" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpop-os%2Fupgrade", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpop-os%2Fupgrade'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb2eb9d77bb065a533e0ff1b19d580e614937c39
[INFO] documenting pop-os/upgrade 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%2Fpop-os%2Fupgrade" "/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/pop-os/upgrade 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/pop-os/upgrade
[INFO] removed workspace from git repo https://github.com/pop-os/upgrade
[INFO] finished tweaking git repo https://github.com/pop-os/upgrade
[INFO] tweaked toml for git repo https://github.com/pop-os/upgrade written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/pop-os/upgrade 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]     Updating git repository `https://github.com/pop-os/sysfs-class`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-cli-wrappers`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-sources-lists`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/distinst/`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/exit-status-ext`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/parallel-getter`
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/sysfs-class`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-cli-wrappers`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/apt-sources-lists`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/distinst/`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/exit-status-ext`
[INFO] [stderr]     Updating git repository `https://github.com/pop-os/parallel-getter`
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-mounts v0.2.4
[INFO] [stderr]   Downloaded exec v0.3.1
[INFO] [stderr]   Downloaded snailquote v0.2.0
[INFO] [stderr]   Downloaded pidfd v0.2.4
[INFO] [stderr]   Downloaded shrinkwraprs v0.3.0
[INFO] [stderr]   Downloaded loopdev v0.2.1
[INFO] [stderr]   Downloaded waker-fn v1.1.0
[INFO] [stderr]   Downloaded procfs v0.7.9
[INFO] [stderr]   Downloaded partition-identity v0.2.8
[INFO] [stderr]   Downloaded errno v0.2.6
[INFO] [stderr]   Downloaded num-derive v0.3.2
[INFO] [stderr]   Downloaded async-channel v1.4.2
[INFO] [stderr]   Downloaded atomic v0.4.6
[INFO] [stderr]   Downloaded fastrand v1.3.5
[INFO] [stderr]   Downloaded systemd-boot-conf v0.2.1
[INFO] [stderr]   Downloaded progress-streams v1.1.0
[INFO] [stderr]   Downloaded cascade v0.1.4
[INFO] [stderr]   Downloaded sluice v0.5.2
[INFO] [stderr]   Downloaded os-detect v0.2.2
[INFO] [stderr]   Downloaded sys-mount v1.2.1
[INFO] [stderr]   Downloaded ubuntu-version v0.2.1
[INFO] [stderr]   Downloaded fomat-macros v0.3.1
[INFO] [stderr]   Downloaded pwd v1.3.0
[INFO] [stderr]   Downloaded smart-default v0.6.0
[INFO] [stderr]   Downloaded enclose v1.1.8
[INFO] [stderr]   Downloaded libparted-sys v0.3.0
[INFO] [stderr]   Downloaded envfile v0.2.1
[INFO] [stderr]   Downloaded libparted v0.1.4
[INFO] [stderr]   Downloaded sedregex v0.2.4
[INFO] [stderr]   Downloaded isahc v0.9.8
[INFO] [stderr]   Downloaded fstab-generate v0.1.2
[INFO] [stderr]   Downloaded fd-reactor v0.1.0
[INFO] [stderr]   Downloaded logind-dbus v0.1.1
[INFO] [stderr]   Downloaded human-sort v0.2.2
[INFO] [stderr]   Downloaded procfs v0.5.4
[INFO] [stderr]   Downloaded disk-types v0.1.2
[INFO] [stderr]   Downloaded future-parking_lot v0.3.3
[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" "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] 26afc41f60f5bb1ac798daf2aa196d02fb507c7603c9d0a0fab18efe6bf2d52b
[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" "26afc41f60f5bb1ac798daf2aa196d02fb507c7603c9d0a0fab18efe6bf2d52b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26afc41f60f5bb1ac798daf2aa196d02fb507c7603c9d0a0fab18efe6bf2d52b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26afc41f60f5bb1ac798daf2aa196d02fb507c7603c9d0a0fab18efe6bf2d52b", kill_on_drop: false }`
[INFO] [stdout] 26afc41f60f5bb1ac798daf2aa196d02fb507c7603c9d0a0fab18efe6bf2d52b
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ef5c8faa2a32677ffcd627e9de7dc9ab956ba96afdc6ae21665ddd5ae6b01b5e
[INFO] running `Command { std: "docker" "start" "-a" "ef5c8faa2a32677ffcd627e9de7dc9ab956ba96afdc6ae21665ddd5ae6b01b5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling bindgen v0.53.3
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking numtoa v0.2.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking rle-decode-fast v1.0.1
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking fastrand v1.3.5
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking event-listener v2.4.0
[INFO] [stderr]    Compiling curl v0.4.33
[INFO] [stderr]     Checking distinst-bootloader v0.1.0 (https://github.com/pop-os/distinst/#312f60ff)
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking libflate_lz77 v1.0.0
[INFO] [stderr]     Checking parking v1.0.6
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]    Compiling isahc v0.9.8
[INFO] [stderr]     Checking cascade v0.1.4
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking exit-status-ext v0.1.0 (https://github.com/pop-os/exit-status-ext#46700735)
[INFO] [stderr]     Checking progress-streams v1.1.0
[INFO] [stderr]     Checking yansi v0.5.0
[INFO] [stderr]     Checking enclose v1.1.8
[INFO] [stderr]     Checking atomic v0.4.6
[INFO] [stderr]     Checking human-sort v0.2.2
[INFO] [stderr]     Checking fomat-macros v0.3.1
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.4+1.41.0
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]     Checking os-release v0.1.0
[INFO] [stderr]    Compiling curl-sys v0.4.36+curl-7.71.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking snailquote v0.2.0
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking sysfs-class v0.1.3 (https://github.com/pop-os/sysfs-class#c3b86e07)
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking async-channel v1.4.2
[INFO] [stderr]     Checking envfile v0.2.1
[INFO] [stderr]     Checking errno v0.2.6
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking fd-reactor v0.1.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking fern v0.6.0
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking libflate v1.0.2
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking loopdev v0.2.1
[INFO] [stderr]     Checking exec v0.3.1
[INFO] [stderr]     Checking num-integer v0.1.43
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]     Checking pidfd v0.2.4
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crossbeam-deque v0.5.2
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking sys-mount v1.2.1
[INFO] [stderr]     Checking blocking v0.4.7
[INFO] [stderr]     Checking sedregex v0.2.4
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking notify-rust v3.6.3
[INFO] [stderr]     Checking logind-dbus v0.1.1
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking publicsuffix v1.5.4
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking distinst-utils v0.1.0 (https://github.com/pop-os/distinst/#312f60ff)
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking distinst-chroot v0.1.0 (https://github.com/pop-os/distinst/#312f60ff)
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rayon v1.4.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking future-parking_lot v0.3.3
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]     Checking crossbeam-channel v0.2.6
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking procfs v0.5.4
[INFO] [stderr]     Checking procfs v0.7.9
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking apt-cli-wrappers v0.1.0 (https://github.com/pop-os/apt-cli-wrappers#8eb24ae0)
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling smart-default v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling num-derive v0.3.2
[INFO] [stderr]    Compiling shrinkwraprs v0.3.0
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]     Checking pwd v1.3.0
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking ubuntu-version v0.2.1
[INFO] [stderr]     Checking systemd-boot-conf v0.2.1
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking partition-identity v0.2.8
[INFO] [stderr]     Checking apt-sources-lists v0.1.0 (https://github.com/pop-os/apt-sources-lists#0df4611e)
[INFO] [stderr]     Checking os-detect v0.2.2
[INFO] [stderr]     Checking proc-mounts v0.2.4
[INFO] [stderr]    Compiling libparted-sys v0.3.0
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking sluice v0.5.2
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stderr]     Checking piper v0.1.3
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking libparted v0.1.4
[INFO] [stderr]     Checking disk-types v0.1.2
[INFO] [stderr]     Checking distinst-external-commands v0.1.0 (https://github.com/pop-os/distinst/#312f60ff)
[INFO] [stderr]     Checking fstab-generate v0.1.2
[INFO] [stderr]     Checking distinst-disk-ops v0.1.0 (https://github.com/pop-os/distinst/#312f60ff)
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking distinst-disks v0.1.0 (https://github.com/pop-os/distinst/#312f60ff)
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking parallel-getter v0.2.0 (https://github.com/pop-os/parallel-getter#69ba6e74)
[INFO] [stderr]  Documenting pop-upgrade v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 24s
[INFO] running `Command { std: "docker" "inspect" "ef5c8faa2a32677ffcd627e9de7dc9ab956ba96afdc6ae21665ddd5ae6b01b5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef5c8faa2a32677ffcd627e9de7dc9ab956ba96afdc6ae21665ddd5ae6b01b5e", kill_on_drop: false }`
[INFO] [stdout] ef5c8faa2a32677ffcd627e9de7dc9ab956ba96afdc6ae21665ddd5ae6b01b5e