[INFO] fetching crate flexible-locks 0.1.0...
[INFO] documenting flexible-locks-0.1.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate flexible-locks 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate flexible-locks 0.1.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flexible-locks 0.1.0
[INFO] finished tweaking crates.io crate flexible-locks 0.1.0
[INFO] tweaked toml for crates.io crate flexible-locks 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a094508d8a23ebf4f33e98bea967acbf0108abe99ddbdfdd1ef95278c9d93fe0
[INFO] running `Command { std: "docker" "start" "-a" "a094508d8a23ebf4f33e98bea967acbf0108abe99ddbdfdd1ef95278c9d93fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a094508d8a23ebf4f33e98bea967acbf0108abe99ddbdfdd1ef95278c9d93fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a094508d8a23ebf4f33e98bea967acbf0108abe99ddbdfdd1ef95278c9d93fe0", kill_on_drop: false }`
[INFO] [stdout] a094508d8a23ebf4f33e98bea967acbf0108abe99ddbdfdd1ef95278c9d93fe0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e26eb9ee3d1ddfd68484a05657674e16824eb196ef0d6e1bbd5923f8e7f0a2e7
[INFO] running `Command { std: "docker" "start" "-a" "e26eb9ee3d1ddfd68484a05657674e16824eb196ef0d6e1bbd5923f8e7f0a2e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling flexible-locks_derive v0.1.0
[INFO] [stderr]  Documenting flexible-locks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Mutex`
[INFO] [stdout]   --> src/os.rs:60:46
[INFO] [stdout]    |
[INFO] [stdout] 60 | /// Platform mutex primitives for use with [`Mutex`] and [`MutexWrap`].
[INFO] [stdout]    |                                              ^^^^^ no item named `Mutex` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `MutexWrap`
[INFO] [stdout]   --> src/os.rs:60:60
[INFO] [stdout]    |
[INFO] [stdout] 60 | /// Platform mutex primitives for use with [`Mutex`] and [`MutexWrap`].
[INFO] [stdout]    |                                                            ^^^^^^^^^ no item named `MutexWrap` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.92s
[INFO] running `Command { std: "docker" "inspect" "e26eb9ee3d1ddfd68484a05657674e16824eb196ef0d6e1bbd5923f8e7f0a2e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e26eb9ee3d1ddfd68484a05657674e16824eb196ef0d6e1bbd5923f8e7f0a2e7", kill_on_drop: false }`
[INFO] [stdout] e26eb9ee3d1ddfd68484a05657674e16824eb196ef0d6e1bbd5923f8e7f0a2e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 5f63344919c3d65e683f3a7c1adc129fdddc63939fb1c797b0341a08cd164ecd
[INFO] running `Command { std: "docker" "start" "-a" "5f63344919c3d65e683f3a7c1adc129fdddc63939fb1c797b0341a08cd164ecd", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling flexible-locks_derive v0.1.0
[INFO] [stderr]  Documenting flexible-locks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Mutex`
[INFO] [stdout]   --> src/os.rs:60:46
[INFO] [stdout]    |
[INFO] [stdout] 60 | /// Platform mutex primitives for use with [`Mutex`] and [`MutexWrap`].
[INFO] [stdout]    |                                              ^^^^^ no item named `Mutex` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `MutexWrap`
[INFO] [stdout]   --> src/os.rs:60:60
[INFO] [stdout]    |
[INFO] [stdout] 60 | /// Platform mutex primitives for use with [`Mutex`] and [`MutexWrap`].
[INFO] [stdout]    |                                                            ^^^^^^^^^ no item named `MutexWrap` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.72s
[INFO] running `Command { std: "docker" "inspect" "5f63344919c3d65e683f3a7c1adc129fdddc63939fb1c797b0341a08cd164ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f63344919c3d65e683f3a7c1adc129fdddc63939fb1c797b0341a08cd164ecd", kill_on_drop: false }`
[INFO] [stdout] 5f63344919c3d65e683f3a7c1adc129fdddc63939fb1c797b0341a08cd164ecd