[INFO] fetching crate catchr-core 0.1.2...
[INFO] documenting catchr-core-0.1.2 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate catchr-core 0.1.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate catchr-core 0.1.2 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 crates.io crate catchr-core 0.1.2
[INFO] finished tweaking crates.io crate catchr-core 0.1.2
[INFO] tweaked toml for crates.io crate catchr-core 0.1.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 948d00b034e8e9685cc89756873cf66b28080f94dffe531517ed3cd7451e0d04
[INFO] running `Command { std: "docker" "start" "-a" "948d00b034e8e9685cc89756873cf66b28080f94dffe531517ed3cd7451e0d04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "948d00b034e8e9685cc89756873cf66b28080f94dffe531517ed3cd7451e0d04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "948d00b034e8e9685cc89756873cf66b28080f94dffe531517ed3cd7451e0d04", kill_on_drop: false }`
[INFO] [stdout] 948d00b034e8e9685cc89756873cf66b28080f94dffe531517ed3cd7451e0d04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 107731edb36e26ed1442fc66875bbfe5b55675f7d203968bf5518fb5640d9867
[INFO] running `Command { std: "docker" "start" "-a" "107731edb36e26ed1442fc66875bbfe5b55675f7d203968bf5518fb5640d9867", kill_on_drop: false }`
[INFO] [stderr]     Checking proc-macro2 v1.0.28
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking syn v1.0.74
[INFO] [stderr]  Documenting catchr-core v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> src/scope.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | use syn::export::TokenStream2;
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `catchr-core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name catchr_core src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern itertools=/opt/rustwide/target/debug/deps/libitertools-759cc9e18e60c59e.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-664abb91e2bdc317.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-dc7cbb122f009b6c.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-63f4f0fb77efda36.rmeta --cap-lints=warn --crate-version 0.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "107731edb36e26ed1442fc66875bbfe5b55675f7d203968bf5518fb5640d9867", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "107731edb36e26ed1442fc66875bbfe5b55675f7d203968bf5518fb5640d9867", kill_on_drop: false }`
[INFO] [stdout] 107731edb36e26ed1442fc66875bbfe5b55675f7d203968bf5518fb5640d9867
