[INFO] cloning repository https://github.com/manpat/spider-butter-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/manpat/spider-butter-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmanpat%2Fspider-butter-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmanpat%2Fspider-butter-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c94472b3751d48008d084eb8955dbe30aa84fe5d [INFO] documenting manpat/spider-butter-rs against 1.61.0 for beta-1.62-rustdoc-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmanpat%2Fspider-butter-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/manpat/spider-butter-rs on toolchain 1.61.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/manpat/spider-butter-rs [INFO] finished tweaking git repo https://github.com/manpat/spider-butter-rs [INFO] tweaked toml for git repo https://github.com/manpat/spider-butter-rs written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/manpat/spider-butter-rs already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating git repository `https://github.com/manpat/acme-client` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cc v1.0.63 [INFO] [stderr] Downloaded inotify v0.4.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1f5fde83f5154b0be437fc285e20c2a16f00d6210a6119818d1425694b27ede9 [INFO] running `Command { std: "docker" "start" "-a" "1f5fde83f5154b0be437fc285e20c2a16f00d6210a6119818d1425694b27ede9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1f5fde83f5154b0be437fc285e20c2a16f00d6210a6119818d1425694b27ede9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1f5fde83f5154b0be437fc285e20c2a16f00d6210a6119818d1425694b27ede9", kill_on_drop: false }` [INFO] [stdout] 1f5fde83f5154b0be437fc285e20c2a16f00d6210a6119818d1425694b27ede9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d1dfe84e5cf8519e41e5ede751b718473a5258af05a830aa5fd2e37f8b7f7a75 [INFO] running `Command { std: "docker" "start" "-a" "d1dfe84e5cf8519e41e5ede751b718473a5258af05a830aa5fd2e37f8b7f7a75", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking futures v0.1.30 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling syn v1.0.48 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling pkg-config v0.3.19 [INFO] [stderr] Compiling cc v1.0.63 [INFO] [stderr] Compiling serde_derive v1.0.117 [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Checking object v0.22.0 [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Checking regex-syntax v0.6.21 [INFO] [stderr] Compiling native-tls v0.2.6 [INFO] [stderr] Compiling encoding_rs v0.8.26 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling unicode-segmentation v1.7.0 [INFO] [stderr] Checking safemem v0.3.3 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking tinyvec v1.0.1 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Compiling miniz_oxide v0.4.3 [INFO] [stderr] Compiling indexmap v1.6.0 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Compiling error-chain v0.12.4 [INFO] [stderr] Checking addr2line v0.14.0 [INFO] [stderr] Checking form_urlencoded v1.0.0 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Compiling crc32fast v1.2.1 [INFO] [stderr] Checking try_from v0.3.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking base64 v0.9.3 [INFO] [stderr] Checking smallvec v0.6.13 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling hyper v0.12.35 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking mime v0.2.6 [INFO] [stderr] Checking unicode-normalization v0.1.16 [INFO] [stderr] Compiling mime_guess v2.0.3 [INFO] [stderr] Compiling openssl-sys v0.9.58 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking regex v1.4.2 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking want v0.2.0 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking time v0.1.44 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking inotify-sys v0.1.4 [INFO] [stderr] Checking flate2 v1.0.19 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking inotify v0.4.2 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking idna v0.2.0 [INFO] [stderr] Checking crossbeam-deque v0.7.3 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking http v0.1.21 [INFO] [stderr] Checking tokio-buf v0.1.1 [INFO] [stderr] Checking string v0.2.1 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Compiling openssl v0.10.30 [INFO] [stderr] Checking url v2.2.0 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking uuid v0.7.4 [INFO] [stderr] Checking backtrace v0.3.54 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking publicsuffix v1.5.4 [INFO] [stderr] Checking cookie v0.12.0 [INFO] [stderr] Checking hyper v0.10.16 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking http-body v0.1.0 [INFO] [stderr] Checking h2 v0.1.26 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Compiling structopt-derive v0.2.18 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking structopt v0.2.18 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking hyper-tls v0.3.2 [INFO] [stderr] Checking serde_urlencoded v0.5.5 [INFO] [stderr] Checking cookie_store v0.7.0 [INFO] [stderr] Checking reqwest v0.9.24 [INFO] [stderr] Checking acme-client v0.5.3 (https://github.com/manpat/acme-client#d5385dda) [INFO] [stderr] Documenting spiderbutter v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(generators, generator_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/main.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/main.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: Compilation failed, aborting rustdoc [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not document `spiderbutter` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name spiderbutter src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f85492c365bea5a3 -L dependency=/opt/rustwide/target/debug/deps --extern acme_client=/opt/rustwide/target/debug/deps/libacme_client-fe87fc5115681ef1.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-f36495bce88f5cd4.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-02b4c0e0b8124440.rmeta --extern inotify=/opt/rustwide/target/debug/deps/libinotify-d2714b3dd9a0d05a.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-dac614a132f67804.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-21ae26493584da16.rmeta --cap-lints=warn --crate-version 0.2.1` (exit status: 1) [INFO] running `Command { std: "docker" "inspect" "d1dfe84e5cf8519e41e5ede751b718473a5258af05a830aa5fd2e37f8b7f7a75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d1dfe84e5cf8519e41e5ede751b718473a5258af05a830aa5fd2e37f8b7f7a75", kill_on_drop: false }` [INFO] [stdout] d1dfe84e5cf8519e41e5ede751b718473a5258af05a830aa5fd2e37f8b7f7a75