[INFO] fetching crate threadgroup 0.1.0...
[INFO] documenting threadgroup-0.1.0 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate threadgroup 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate threadgroup 0.1.0 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 threadgroup 0.1.0
[INFO] finished tweaking crates.io crate threadgroup 0.1.0
[INFO] tweaked toml for crates.io crate threadgroup 0.1.0 written to /workspace/builds/worker-4/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] 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f5642fc086940d12ac0a4a6be2ca38c5755e6357b07fc5fd52e0c35d7198bbf3
[INFO] running `Command { std: "docker" "start" "-a" "f5642fc086940d12ac0a4a6be2ca38c5755e6357b07fc5fd52e0c35d7198bbf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5642fc086940d12ac0a4a6be2ca38c5755e6357b07fc5fd52e0c35d7198bbf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5642fc086940d12ac0a4a6be2ca38c5755e6357b07fc5fd52e0c35d7198bbf3", kill_on_drop: false }`
[INFO] [stdout] f5642fc086940d12ac0a4a6be2ca38c5755e6357b07fc5fd52e0c35d7198bbf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cae27a8a8162da813cf0a876c8d285af372f0890cc9765bb6a5ac0833e90dd73
[INFO] running `Command { std: "docker" "start" "-a" "cae27a8a8162da813cf0a876c8d285af372f0890cc9765bb6a5ac0833e90dd73", kill_on_drop: false }`
[INFO] [stderr]  Documenting threadgroup v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[join]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/lib.rs:41:34
[INFO] [stdout]    |
[INFO] [stdout] 41 | /// Possible error returns from [`join()`] and [`join_timeout()`].
[INFO] [stdout]    |                                  ^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(intra_doc_link_resolution_failure)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[join_timeout]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/lib.rs:41:49
[INFO] [stdout]    |
[INFO] [stdout] 41 | /// Possible error returns from [`join()`] and [`join_timeout()`].
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[join]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/lib.rs:42:6
[INFO] [stdout]    |
[INFO] [stdout] 42 | /// [`join()`]:         struct.ThreadGroup.html#method.join
[INFO] [stdout]    |      ^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[join_timeout]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/lib.rs:43:6
[INFO] [stdout]    |
[INFO] [stdout] 43 | /// [`join_timeout()`]: struct.ThreadGroup.html#method.join_timeout
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[spawn]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:121:49
[INFO] [stdout]     |
[INFO] [stdout] 121 |     /// Return count of threads that have been [`spawn()`]ed but not yet [`join()`]ed.
[INFO] [stdout]     |                                                 ^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[join]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:121:75
[INFO] [stdout]     |
[INFO] [stdout] 121 |     /// Return count of threads that have been [`spawn()`]ed but not yet [`join()`]ed.
[INFO] [stdout]     |                                                                           ^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[spawn]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:122:10
[INFO] [stdout]     |
[INFO] [stdout] 122 |     /// [`spawn()`]: struct.ThreadGroup.html#method.spawn
[INFO] [stdout]     |          ^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[join]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:123:10
[INFO] [stdout]     |
[INFO] [stdout] 123 |     /// [`join()`]: struct.ThreadGroup.html#method.join
[INFO] [stdout]     |          ^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[join]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:128:47
[INFO] [stdout]     |
[INFO] [stdout] 128 |     /// Check if there is any thread not yet [`join()`]ed.
[INFO] [stdout]     |                                               ^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[join]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:129:10
[INFO] [stdout]     |
[INFO] [stdout] 129 |     /// [`join()`]: struct.ThreadGroup.html#method.join
[INFO] [stdout]     |          ^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "cae27a8a8162da813cf0a876c8d285af372f0890cc9765bb6a5ac0833e90dd73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cae27a8a8162da813cf0a876c8d285af372f0890cc9765bb6a5ac0833e90dd73", kill_on_drop: false }`
[INFO] [stdout] cae27a8a8162da813cf0a876c8d285af372f0890cc9765bb6a5ac0833e90dd73