[INFO] fetching crate git-kickflip 0.1.0...
[INFO] documenting git-kickflip-0.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate git-kickflip 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate git-kickflip 0.1.0 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 crates.io crate git-kickflip 0.1.0
[INFO] finished tweaking crates.io crate git-kickflip 0.1.0
[INFO] tweaked toml for crates.io crate git-kickflip 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate git-kickflip 0.1.0 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 proc-macro2 v1.0.29
[INFO] [stderr]   Downloaded execute-command-macro-impl v0.1.6
[INFO] [stderr]   Downloaded execute-command-tokens v0.1.4
[INFO] [stderr]   Downloaded execute-command-macro v0.1.6
[INFO] [stderr]   Downloaded execute v0.2.9
[INFO] [stderr]   Downloaded syn v1.0.77
[INFO] [stderr]   Downloaded libc v0.2.103
[INFO] [stderr]   Downloaded object v0.26.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 99f0059a6eec426bb0a6a891a303c01532e884c0671ff9e7635bb4b44800df28
[INFO] running `Command { std: "docker" "start" "-a" "99f0059a6eec426bb0a6a891a303c01532e884c0671ff9e7635bb4b44800df28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99f0059a6eec426bb0a6a891a303c01532e884c0671ff9e7635bb4b44800df28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99f0059a6eec426bb0a6a891a303c01532e884c0671ff9e7635bb4b44800df28", kill_on_drop: false }`
[INFO] [stdout] 99f0059a6eec426bb0a6a891a303c01532e884c0671ff9e7635bb4b44800df28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 605bf14cce6cc45bb7b602a0b5e23725c09dcd00e36ef04051353b4297b4034a
[INFO] running `Command { std: "docker" "start" "-a" "605bf14cce6cc45bb7b602a0b5e23725c09dcd00e36ef04051353b4297b4034a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling syn v1.0.77
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling execute-command-tokens v0.1.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking object v0.26.2
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling execute-command-macro-impl v0.1.6
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]     Checking execute-command-macro v0.1.6
[INFO] [stderr]     Checking execute v0.2.9
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking structopt v0.3.23
[INFO] [stderr]  Documenting git-kickflip 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(exit_status_error)]
[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 `git-kickflip`
[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 --edition=2018 --crate-type bin --crate-name git_kickflip 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=fab463870e83cd9e -L dependency=/opt/rustwide/target/debug/deps --extern execute=/opt/rustwide/target/debug/deps/libexecute-1886a6f9c9fe9c80.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-aace9195e1b65366.rmeta --extern failure_derive=/opt/rustwide/target/debug/deps/libfailure_derive-3948363a6b505b11.so --extern rand=/opt/rustwide/target/debug/deps/librand-a1f904651a38021e.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-e4154a51c413669b.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-a5564135b5c51a08.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "605bf14cce6cc45bb7b602a0b5e23725c09dcd00e36ef04051353b4297b4034a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "605bf14cce6cc45bb7b602a0b5e23725c09dcd00e36ef04051353b4297b4034a", kill_on_drop: false }`
[INFO] [stdout] 605bf14cce6cc45bb7b602a0b5e23725c09dcd00e36ef04051353b4297b4034a
