[INFO] cloning repository https://github.com/ArdusJax/dart-frog
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArdusJax/dart-frog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArdusJax%2Fdart-frog", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArdusJax%2Fdart-frog'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b232422671d4fde470d1c1b4418ef3c8b86d4264
[INFO] documenting ArdusJax/dart-frog against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArdusJax%2Fdart-frog" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ArdusJax/dart-frog on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ArdusJax/dart-frog
[INFO] finished tweaking git repo https://github.com/ArdusJax/dart-frog
[INFO] tweaked toml for git repo https://github.com/ArdusJax/dart-frog written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ArdusJax/dart-frog already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lazy_static v1.1.0
[INFO] [stderr]   Downloaded version_check v0.1.4
[INFO] [stderr]   Downloaded unindent v0.1.3
[INFO] [stderr]   Downloaded rand_core v0.2.1
[INFO] [stderr]   Downloaded quote v0.6.8
[INFO] [stderr]   Downloaded memchr v2.0.2
[INFO] [stderr]   Downloaded smallvec v0.6.5
[INFO] [stderr]   Downloaded dtoa v0.4.3
[INFO] [stderr]   Downloaded linked-hash-map v0.5.1
[INFO] [stderr]   Downloaded proc-macro2 v0.4.19
[INFO] [stderr]   Downloaded serde_derive v1.0.78
[INFO] [stderr]   Downloaded serde_json v1.0.27
[INFO] [stderr]   Downloaded rand v0.5.5
[INFO] [stderr]   Downloaded regex v1.0.5
[INFO] [stderr]   Downloaded indicatif v0.9.0
[INFO] [stderr]   Downloaded libc v0.2.43
[INFO] [stderr]   Downloaded regex-syntax v0.6.2
[INFO] [stderr]   Downloaded aho-corasick v0.6.8
[INFO] [stderr]   Downloaded syn v0.15.4
[INFO] [stderr]   Downloaded serde v1.0.78
[INFO] [stderr]   Downloaded yaml-rust v0.4.0
[INFO] [stderr]   Downloaded parking_lot v0.6.4
[INFO] [stderr]   Downloaded ryu v0.2.6
[INFO] [stderr]   Downloaded parking_lot_core v0.3.1
[INFO] [stderr]   Downloaded colored v1.6.1
[INFO] [stderr]   Downloaded utf8-ranges v1.0.1
[INFO] [stderr]   Downloaded termios v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26de7cb2af3e06a53273618f3129a9f7e90e4f9e1377c5463c52e3df6f3add04
[INFO] running `Command { std: "docker" "start" "-a" "26de7cb2af3e06a53273618f3129a9f7e90e4f9e1377c5463c52e3df6f3add04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26de7cb2af3e06a53273618f3129a9f7e90e4f9e1377c5463c52e3df6f3add04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26de7cb2af3e06a53273618f3129a9f7e90e4f9e1377c5463c52e3df6f3add04", kill_on_drop: false }`
[INFO] [stdout] 26de7cb2af3e06a53273618f3129a9f7e90e4f9e1377c5463c52e3df6f3add04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57ff54d2bce8ddcb131387b7256635c4a11fae20dc2d8ad5aaf12a8a5fde39e8
[INFO] running `Command { std: "docker" "start" "-a" "57ff54d2bce8ddcb131387b7256635c4a11fae20dc2d8ad5aaf12a8a5fde39e8", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.78
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]     Checking memchr v2.0.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking termios v0.3.0
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]    Compiling syn v0.15.4
[INFO] [stderr]     Checking yaml-rust v0.4.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking colored v1.6.1
[INFO] [stderr]     Checking unindent v0.1.3
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking console v0.6.2
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]    Compiling serde_derive v1.0.78
[INFO] [stderr]     Checking serde_json v1.0.27
[INFO] [stderr]     Checking serde_yaml v0.7.5
[INFO] [stderr]  Documenting dart-frog v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(custom_attribute)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `dart-frog`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --crate-type bin --crate-name dart_frog src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=fba0d0bc806620cf -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-aea8438557cb892c.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-338da4709ff7d728.rmeta --extern indicatif=/opt/rustwide/target/debug/deps/libindicatif-72510526a31dd624.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-770c73392f169ad0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-64213bf0211dad61.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-cd56dd60361609b0.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-1c4cf1c0191d3812.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-26478eddbe2af2e6.rmeta --extern unindent=/opt/rustwide/target/debug/deps/libunindent-fd8b6c40072f1e05.rmeta --extern yaml_rust=/opt/rustwide/target/debug/deps/libyaml_rust-29adaffdb8f05013.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "57ff54d2bce8ddcb131387b7256635c4a11fae20dc2d8ad5aaf12a8a5fde39e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57ff54d2bce8ddcb131387b7256635c4a11fae20dc2d8ad5aaf12a8a5fde39e8", kill_on_drop: false }`
[INFO] [stdout] 57ff54d2bce8ddcb131387b7256635c4a11fae20dc2d8ad5aaf12a8a5fde39e8
