[INFO] cloning repository https://github.com/gridgentoo/spartan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gridgentoo/spartan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgridgentoo%2Fspartan", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgridgentoo%2Fspartan'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6d774257dbe9abdf2858fd9e29629e3e9e48cbe
[INFO] documenting gridgentoo/spartan 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%2Fgridgentoo%2Fspartan" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gridgentoo/spartan 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/gridgentoo/spartan
[INFO] finished tweaking git repo https://github.com/gridgentoo/spartan
[INFO] tweaked toml for git repo https://github.com/gridgentoo/spartan written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/gridgentoo/spartan 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/ivan770/warp`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 5e1f8c26b15002312c65516b123dd4cfd707de68791b6bc36f4d646c0aad8a63
[INFO] running `Command { std: "docker" "start" "-a" "5e1f8c26b15002312c65516b123dd4cfd707de68791b6bc36f4d646c0aad8a63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e1f8c26b15002312c65516b123dd4cfd707de68791b6bc36f4d646c0aad8a63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e1f8c26b15002312c65516b123dd4cfd707de68791b6bc36f4d646c0aad8a63", kill_on_drop: false }`
[INFO] [stdout] 5e1f8c26b15002312c65516b123dd4cfd707de68791b6bc36f4d646c0aad8a63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] e891707d12d94743dda9ebcb490cf027c15e06e5bb98eb4c057f7f480a76be9a
[INFO] running `Command { std: "docker" "start" "-a" "e891707d12d94743dda9ebcb490cf027c15e06e5bb98eb4c057f7f480a76be9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking zeroize v0.9.3
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]     Checking http v0.2.2
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking terminal_size v0.1.15
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking headers v0.3.2
[INFO] [stderr]     Checking sha-1 v0.9.2
[INFO] [stderr]     Checking multipart v0.17.0
[INFO] [stderr]     Checking tungstenite v0.11.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking console v0.13.0
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking dialoguer v0.7.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking tokio v0.2.24
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking tokio-tungstenite v0.11.0
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking maybe-owned v0.3.4
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking hyper v0.13.9
[INFO] [stderr]     Checking warp v0.2.5 (https://github.com/ivan770/warp#244bb8b2)
[INFO] [stderr]     Checking spartan v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting spartan v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> spartan/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(btree_drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `spartan`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name spartan spartan/main.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="dialoguer"' --cfg 'feature="init"' --cfg 'feature="itertools"' --cfg 'feature="replication"' --cfg 'feature="tokio-util"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d3cc26341e667131 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-59327496a5147013.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-3f38bd4b231e64fc.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-d2f9b88178ca7b9a.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-dcce77079dd8fe1e.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-927c9edf95627ab6.rmeta --extern dialoguer=/opt/rustwide/target/debug/deps/libdialoguer-bad12f62933b713a.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-acaf0838287b8570.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-6afed964e725cfad.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-2be53ef7d3962f41.rmeta --extern maybe_owned=/opt/rustwide/target/debug/deps/libmaybe_owned-e646cd83c92fed33.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-d2779799ff5b840e.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-e868e9d8015a4424.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-a050e201002ec951.rmeta --extern spartan_lib=/opt/rustwide/target/debug/deps/libspartan_lib-303318be0ce780f7.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-df0c8eca9e0ad888.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-450a2811259749e1.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-798702f59ab57d33.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-9d15a17612ed1deb.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-132ba5aa4e4532f7.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-bb325a74a8616795.rmeta --extern warp=/opt/rustwide/target/debug/deps/libwarp-b30e93024bb48a0e.rmeta --cap-lints=warn --crate-version 0.7.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e891707d12d94743dda9ebcb490cf027c15e06e5bb98eb4c057f7f480a76be9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e891707d12d94743dda9ebcb490cf027c15e06e5bb98eb4c057f7f480a76be9a", kill_on_drop: false }`
[INFO] [stdout] e891707d12d94743dda9ebcb490cf027c15e06e5bb98eb4c057f7f480a76be9a