[INFO] fetching crate dbkit-engine 0.0.9...
[INFO] documenting dbkit-engine-0.0.9 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate dbkit-engine 0.0.9 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate dbkit-engine 0.0.9 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 dbkit-engine 0.0.9
[INFO] finished tweaking crates.io crate dbkit-engine 0.0.9
[INFO] tweaked toml for crates.io crate dbkit-engine 0.0.9 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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 itertools v0.4.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f75e13c5e4c46653f8bddb481765ecdd988378146d828534fc7481034010b954
[INFO] running `Command { std: "docker" "start" "-a" "f75e13c5e4c46653f8bddb481765ecdd988378146d828534fc7481034010b954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f75e13c5e4c46653f8bddb481765ecdd988378146d828534fc7481034010b954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f75e13c5e4c46653f8bddb481765ecdd988378146d828534fc7481034010b954", kill_on_drop: false }`
[INFO] [stdout] f75e13c5e4c46653f8bddb481765ecdd988378146d828534fc7481034010b954
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2d11895aa197546e7f5b64e0f4b4eda5894fa2de0e94a650fd1fe2f4ef8c1696
[INFO] running `Command { std: "docker" "start" "-a" "2d11895aa197546e7f5b64e0f4b4eda5894fa2de0e94a650fd1fe2f4ef8c1696", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]     Checking toml v0.2.1
[INFO] [stderr]  Documenting dbkit-engine v0.0.9 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[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 `dbkit-engine`
[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 lib --crate-name dbkit_engine src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=020abd32aae59fc4 -L dependency=/opt/rustwide/target/debug/deps --extern itertools=/opt/rustwide/target/debug/deps/libitertools-a70a9d34f2bd886c.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-3d27937a83d9eb13.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-e1cbcf89c6ff6e04.rmeta --cap-lints=warn --crate-version 0.0.9` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2d11895aa197546e7f5b64e0f4b4eda5894fa2de0e94a650fd1fe2f4ef8c1696", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d11895aa197546e7f5b64e0f4b4eda5894fa2de0e94a650fd1fe2f4ef8c1696", kill_on_drop: false }`
[INFO] [stdout] 2d11895aa197546e7f5b64e0f4b4eda5894fa2de0e94a650fd1fe2f4ef8c1696
