[INFO] cloning repository https://github.com/weberc2/futhorc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/weberc2/futhorc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweberc2%2Ffuthorc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweberc2%2Ffuthorc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b3313d05160a950cc9e2a9151b09026758e958f
[INFO] documenting weberc2/futhorc against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fweberc2%2Ffuthorc" "/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/weberc2/futhorc on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/weberc2/futhorc
[INFO] finished tweaking git repo https://github.com/weberc2/futhorc
[INFO] tweaked toml for git repo https://github.com/weberc2/futhorc written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/weberc2/futhorc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7cc635f5a8860efdbf385e1f2342144c30555ba51274f42caace23d1bd0e9ecf
[INFO] running `Command { std: "docker" "start" "-a" "7cc635f5a8860efdbf385e1f2342144c30555ba51274f42caace23d1bd0e9ecf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cc635f5a8860efdbf385e1f2342144c30555ba51274f42caace23d1bd0e9ecf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cc635f5a8860efdbf385e1f2342144c30555ba51274f42caace23d1bd0e9ecf", kill_on_drop: false }`
[INFO] [stdout] 7cc635f5a8860efdbf385e1f2342144c30555ba51274f42caace23d1bd0e9ecf
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43e6e61a8de6aa25e99258b21615616a4a2996eb441fec93ee9bd5f18a067948
[INFO] running `Command { std: "docker" "start" "-a" "43e6e61a8de6aa25e99258b21615616a4a2996eb441fec93ee9bd5f18a067948", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.61
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling gtmpl_value v0.4.0
[INFO] [stderr]     Checking deunicode v0.4.3
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking slug v0.1.4
[INFO] [stderr]     Checking gtmpl v0.6.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking quick-xml v0.20.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking diligent-date-parser v0.1.2
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling gtmpl_derive v0.4.0
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]     Checking atom_syndication v0.9.1
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]  Documenting futhorc v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #![feature(map_into_keys_values)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `futhorc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name futhorc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern atom_syndication=/opt/rustwide/target/debug/deps/libatom_syndication-873eca5c946076ce.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-25e84387d1d57114.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-1230ef308e29b3d0.rmeta --extern gtmpl=/opt/rustwide/target/debug/deps/libgtmpl-199e980639cd44a6.rmeta --extern gtmpl_derive=/opt/rustwide/target/debug/deps/libgtmpl_derive-e3d3a12f57552770.so --extern gtmpl_value=/opt/rustwide/target/debug/deps/libgtmpl_value-ad9b8ee373349751.rmeta --extern pulldown_cmark=/opt/rustwide/target/debug/deps/libpulldown_cmark-8b7581dc46d6968c.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-6304d9c13d994dc9.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-8016d3e2091feecc.rmeta --extern slug=/opt/rustwide/target/debug/deps/libslug-7507a00a47d0e4cf.rmeta --cap-lints=warn --crate-version 0.1.6` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "43e6e61a8de6aa25e99258b21615616a4a2996eb441fec93ee9bd5f18a067948", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43e6e61a8de6aa25e99258b21615616a4a2996eb441fec93ee9bd5f18a067948", kill_on_drop: false }`
[INFO] [stdout] 43e6e61a8de6aa25e99258b21615616a4a2996eb441fec93ee9bd5f18a067948
