[INFO] crate lazy 0.5.3 is already in cache
[INFO] documenting lazy-0.5.3 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate lazy 0.5.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lazy 0.5.3 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lazy 0.5.3
[INFO] finished tweaking crates.io crate lazy 0.5.3
[INFO] tweaked toml for crates.io crate lazy 0.5.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3690c09ed3fbc865176b16732f34df7b1533a700824abea498b178f50708670c
[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" "3690c09ed3fbc865176b16732f34df7b1533a700824abea498b178f50708670c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3690c09ed3fbc865176b16732f34df7b1533a700824abea498b178f50708670c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3690c09ed3fbc865176b16732f34df7b1533a700824abea498b178f50708670c", kill_on_drop: false }`
[INFO] [stdout] 3690c09ed3fbc865176b16732f34df7b1533a700824abea498b178f50708670c
[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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f9620a96b0c74f90ffb5635aaa4015d1f684cec42b39609977553e6beb4e647
[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" "3f9620a96b0c74f90ffb5635aaa4015d1f684cec42b39609977553e6beb4e647", kill_on_drop: false }`
[INFO] [stderr]     Checking oncemutex v0.1.1
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking debug_unreachable v0.1.1
[INFO] [stderr]  Documenting lazy v0.5.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::thunk`
[INFO] [stdout]  --> src/single.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thunk::Invoke;
[INFO] [stdout]   |          ^^^^^ could not find `thunk` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::thunk`
[INFO] [stdout]  --> src/sync.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thunk::Invoke;
[INFO] [stdout]   |          ^^^^^ could not find `thunk` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stdout]   --> src/single.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<T> !Sync for Thunk<T> {}
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #68318 <https://github.com/rust-lang/rust/issues/68318> for more information
[INFO] [stdout]    = help: add `#![feature(negative_impls)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `lazy`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name lazy 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 debug_unreachable=/opt/rustwide/target/debug/deps/libdebug_unreachable-828ec029e775a966.rmeta --extern oncemutex=/opt/rustwide/target/debug/deps/liboncemutex-f6d3df0d8a78c963.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "3f9620a96b0c74f90ffb5635aaa4015d1f684cec42b39609977553e6beb4e647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f9620a96b0c74f90ffb5635aaa4015d1f684cec42b39609977553e6beb4e647", kill_on_drop: false }`
[INFO] [stdout] 3f9620a96b0c74f90ffb5635aaa4015d1f684cec42b39609977553e6beb4e647