[INFO] crate with_tempdir 0.1.0 is already in cache
[INFO] documenting with_tempdir-0.1.0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate with_tempdir 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate with_tempdir 0.1.0 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate with_tempdir 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate with_tempdir 0.1.0
[INFO] tweaked toml for crates.io crate with_tempdir 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 924fd086e25acc8a9df67f0fa1fdb18e3025501acec02a6609e5f4c6ad55565b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "924fd086e25acc8a9df67f0fa1fdb18e3025501acec02a6609e5f4c6ad55565b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "924fd086e25acc8a9df67f0fa1fdb18e3025501acec02a6609e5f4c6ad55565b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "924fd086e25acc8a9df67f0fa1fdb18e3025501acec02a6609e5f4c6ad55565b", kill_on_drop: false }`
[INFO] [stdout] 924fd086e25acc8a9df67f0fa1fdb18e3025501acec02a6609e5f4c6ad55565b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4b30d095ff835a10e1aade8cc084ce47c9d9983cdd29bc74c5914ce74bbcecc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b4b30d095ff835a10e1aade8cc084ce47c9d9983cdd29bc74c5914ce74bbcecc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]  Documenting with_tempdir v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::ItemFn`
[INFO] [stdout]   --> src/lib.rs:22:45
[INFO] [stdout]    |
[INFO] [stdout] 22 | use syn::{parse_macro_input, AttributeArgs, ItemFn, Lit, Meta, NestedMeta};
[INFO] [stdout]    |                                             ^^^^^^ no `ItemFn` in the root
[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 `with_tempdir`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name with_tempdir 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 proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ae23360b00ab2b8b.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-205ee3420ce6b991.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-d383fb6c6db01ed6.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-f5838006d67be7f3.rmeta --extern proc_macro --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "b4b30d095ff835a10e1aade8cc084ce47c9d9983cdd29bc74c5914ce74bbcecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4b30d095ff835a10e1aade8cc084ce47c9d9983cdd29bc74c5914ce74bbcecc", kill_on_drop: false }`
[INFO] [stdout] b4b30d095ff835a10e1aade8cc084ce47c9d9983cdd29bc74c5914ce74bbcecc