[INFO] fetching crate katexit-example-nightly 0.1.4...
[INFO] documenting katexit-example-nightly-0.1.4 against master#8afe9ff1caa97654c31fb8c259dac9fdf67d6302 for pr-151918
[INFO] extracting crate katexit-example-nightly 0.1.4 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate katexit-example-nightly 0.1.4
[INFO] finished tweaking crates.io crate katexit-example-nightly 0.1.4
[INFO] tweaked toml for crates.io crate katexit-example-nightly 0.1.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate katexit-example-nightly 0.1.4 on toolchain 8afe9ff1caa97654c31fb8c259dac9fdf67d6302
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded katexit v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcfbbca5e67d59d634c2a9fe555d2ee63d2a73a223e1fad5f6c044c6f1f221b2
[INFO] running `Command { std: "docker" "start" "-a" "bcfbbca5e67d59d634c2a9fe555d2ee63d2a73a223e1fad5f6c044c6f1f221b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcfbbca5e67d59d634c2a9fe555d2ee63d2a73a223e1fad5f6c044c6f1f221b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcfbbca5e67d59d634c2a9fe555d2ee63d2a73a223e1fad5f6c044c6f1f221b2", kill_on_drop: false }`
[INFO] [stdout] bcfbbca5e67d59d634c2a9fe555d2ee63d2a73a223e1fad5f6c044c6f1f221b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 792ec7c47fbdf436c1d2987b7eff9b4e9e63e74b8dc30e50c0ccf14a2a92383b
[INFO] running `Command { std: "docker" "start" "-a" "792ec7c47fbdf436c1d2987b7eff9b4e9e63e74b8dc30e50c0ccf14a2a92383b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling katexit v0.1.5
[INFO] [stderr]  Documenting katexit-example-nightly v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `prelude_import` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(prelude_import, custom_inner_attributes)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.66s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/katexit_example_nightly/index.html
[INFO] running `Command { std: "docker" "inspect" "792ec7c47fbdf436c1d2987b7eff9b4e9e63e74b8dc30e50c0ccf14a2a92383b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792ec7c47fbdf436c1d2987b7eff9b4e9e63e74b8dc30e50c0ccf14a2a92383b", kill_on_drop: false }`
[INFO] [stdout] 792ec7c47fbdf436c1d2987b7eff9b4e9e63e74b8dc30e50c0ccf14a2a92383b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f948dfc584889d4b8a199e439d38629fca7f68c314e79367aa9877dfcbbd2e6
[INFO] running `Command { std: "docker" "start" "-a" "2f948dfc584889d4b8a199e439d38629fca7f68c314e79367aa9877dfcbbd2e6", kill_on_drop: false }`
[INFO] [stderr]  Documenting katexit-example-nightly v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `prelude_import` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(prelude_import, custom_inner_attributes)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/katexit_example_nightly/index.html
[INFO] running `Command { std: "docker" "inspect" "2f948dfc584889d4b8a199e439d38629fca7f68c314e79367aa9877dfcbbd2e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f948dfc584889d4b8a199e439d38629fca7f68c314e79367aa9877dfcbbd2e6", kill_on_drop: false }`
[INFO] [stdout] 2f948dfc584889d4b8a199e439d38629fca7f68c314e79367aa9877dfcbbd2e6