[INFO] cloning repository https://github.com/ChristopherBiscardi/digital-garden
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ChristopherBiscardi/digital-garden" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristopherBiscardi%2Fdigital-garden", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristopherBiscardi%2Fdigital-garden'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95d2d82364305ce39150bc2e8301bf6adece1696
[INFO] documenting ChristopherBiscardi/digital-garden 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%2FChristopherBiscardi%2Fdigital-garden" "/workspace/builds/worker-77/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-77/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChristopherBiscardi/digital-garden 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/ChristopherBiscardi/digital-garden
[INFO] finished tweaking git repo https://github.com/ChristopherBiscardi/digital-garden
[INFO] tweaked toml for git repo https://github.com/ChristopherBiscardi/digital-garden written to /workspace/builds/worker-77/source/Cargo.toml
[INFO] crate git repo https://github.com/ChristopherBiscardi/digital-garden 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.58
[INFO] [stderr]   Downloaded owo-colors v1.1.3
[INFO] [stderr]   Downloaded globwalk v0.7.3
[INFO] [stderr]   Downloaded predicates v1.0.5
[INFO] [stderr]   Downloaded eyre v0.6.1
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.13
[INFO] [stderr]   Downloaded assert_fs v1.0.0
[INFO] [stderr]   Downloaded ignore v0.4.16
[INFO] [stderr]   Downloaded terminal_size v0.1.15
[INFO] [stderr]   Downloaded dialoguer v0.7.1
[INFO] [stderr]   Downloaded escargot v0.5.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.17
[INFO] [stderr]   Downloaded backtrace v0.3.52
[INFO] [stderr]   Downloaded zeroize v0.9.3
[INFO] [stderr]   Downloaded regex-syntax v0.6.19
[INFO] [stderr]   Downloaded assert_cmd v1.0.1
[INFO] [stderr]   Downloaded mio v0.7.6
[INFO] [stderr]   Downloaded tracing-error v0.1.2
[INFO] [stderr]   Downloaded rust-argon2 v0.8.2
[INFO] [stderr]   Downloaded structopt-derive v0.4.12
[INFO] [stderr]   Downloaded color-eyre v0.5.6
[INFO] [stderr]   Downloaded deunicode v0.4.3
[INFO] [stderr]   Downloaded syn v1.0.55
[INFO] [stderr]   Downloaded rprompt v1.0.5
[INFO] [stderr]   Downloaded color-spantrace v0.1.4
[INFO] [stderr]   Downloaded slug v0.1.4
[INFO] [stderr]   Downloaded pin-project-lite v0.1.10
[INFO] [stderr]   Downloaded regex v1.4.0
[INFO] [stderr]   Downloaded indenter v0.3.0
[INFO] [stderr]   Downloaded edit v0.1.2
[INFO] [stderr]   Downloaded flate2 v1.0.19
[INFO] [stderr]   Downloaded structopt v0.3.19
[INFO] [stderr]   Downloaded minus v2.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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] 242153214d558ca576d08e3a4ab0d73a786b0e4665e75ef72427a7fc52c9c8b9
[INFO] running `Command { std: "docker" "start" "-a" "242153214d558ca576d08e3a4ab0d73a786b0e4665e75ef72427a7fc52c9c8b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "242153214d558ca576d08e3a4ab0d73a786b0e4665e75ef72427a7fc52c9c8b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "242153214d558ca576d08e3a4ab0d73a786b0e4665e75ef72427a7fc52c9c8b9", kill_on_drop: false }`
[INFO] [stdout] 242153214d558ca576d08e3a4ab0d73a786b0e4665e75ef72427a7fc52c9c8b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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] f3f7e13344a615590efd661357d1aea6381ec7e82e8cd439f78eff43040f45d0
[INFO] running `Command { std: "docker" "start" "-a" "f3f7e13344a615590efd661357d1aea6381ec7e82e8cd439f78eff43040f45d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking pin-project-lite v0.1.10
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]     Checking regex-syntax v0.6.19
[INFO] [stderr]    Compiling serde_json v1.0.58
[INFO] [stderr]    Compiling eyre v0.6.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]     Checking rustc-demangle v0.1.17
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking xml-rs v0.8.3
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking indenter v0.3.0
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]     Checking zeroize v0.9.3
[INFO] [stderr]     Checking deunicode v0.4.3
[INFO] [stderr]     Checking owo-colors v1.1.3
[INFO] [stderr]     Checking rprompt v1.0.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling onig_sys v69.6.0
[INFO] [stderr]     Checking sharded-slab v0.0.9
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking slug v0.1.4
[INFO] [stderr]     Checking tracing-subscriber v0.2.13
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]     Checking terminal_size v0.1.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking which v3.1.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking directories v3.0.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking crossterm v0.18.2
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking backtrace v0.3.52
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking regex v1.4.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking edit v0.1.2
[INFO] [stderr]     Checking console v0.13.0
[INFO] [stderr]     Checking dialoguer v0.7.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling structopt-derive v0.4.12
[INFO] [stderr]     Checking onig v6.1.1
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking minus v2.1.0
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking structopt v0.3.19
[INFO] [stderr]     Checking color-spantrace v0.1.4
[INFO] [stderr]     Checking color-eyre v0.5.6
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking plist v1.0.0
[INFO] [stderr]     Checking syntect v4.5.0
[INFO] [stderr]     Checking digital-garden v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting digital-garden v0.1.0 (/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(bool_to_option)]
[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 `digital-garden`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name garden src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern color_eyre=/opt/rustwide/target/debug/deps/libcolor_eyre-1eaa1ff842f174a8.rmeta --extern console=/opt/rustwide/target/debug/deps/libconsole-9fc34f32f629c986.rmeta --extern dialoguer=/opt/rustwide/target/debug/deps/libdialoguer-0f5abf8c981b622c.rmeta --extern digital_garden=/opt/rustwide/target/debug/deps/libdigital_garden-ffa8c19c9cafcf96.rmeta --extern directories=/opt/rustwide/target/debug/deps/libdirectories-45dcbcbb5f2f1b9a.rmeta --extern edit=/opt/rustwide/target/debug/deps/libedit-9ad54b7ca5d0abf0.rmeta --extern minus=/opt/rustwide/target/debug/deps/libminus-eacf975d91fa7891.rmeta --extern owo_colors=/opt/rustwide/target/debug/deps/libowo_colors-7c374bfa30752aed.rmeta --extern pulldown_cmark=/opt/rustwide/target/debug/deps/libpulldown_cmark-07c5c7e2cdad9428.rmeta --extern rprompt=/opt/rustwide/target/debug/deps/librprompt-e059a50aed1256f0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-e592ed2ab3570701.rmeta --extern slug=/opt/rustwide/target/debug/deps/libslug-7507a00a47d0e4cf.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-06c94a0cfaea9d51.rmeta --extern syntect=/opt/rustwide/target/debug/deps/libsyntect-6281d43005a591bd.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-eb7768592674b82d.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-811bfec873c72918.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-02dc6bfcfb89f9cc.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f3f7e13344a615590efd661357d1aea6381ec7e82e8cd439f78eff43040f45d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3f7e13344a615590efd661357d1aea6381ec7e82e8cd439f78eff43040f45d0", kill_on_drop: false }`
[INFO] [stdout] f3f7e13344a615590efd661357d1aea6381ec7e82e8cd439f78eff43040f45d0
