[INFO] fetching crate singleton 0.2.2...
[INFO] documenting singleton-0.2.2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate singleton 0.2.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate singleton 0.2.2 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 singleton 0.2.2
[INFO] finished tweaking crates.io crate singleton 0.2.2
[INFO] tweaked toml for crates.io crate singleton 0.2.2 written to /workspace/builds/worker-2/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 81cf051714cb730e80654949b760998914a5b735821068df4769a66b907b1bd7
[INFO] running `Command { std: "docker" "start" "-a" "81cf051714cb730e80654949b760998914a5b735821068df4769a66b907b1bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81cf051714cb730e80654949b760998914a5b735821068df4769a66b907b1bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81cf051714cb730e80654949b760998914a5b735821068df4769a66b907b1bd7", kill_on_drop: false }`
[INFO] [stdout] 81cf051714cb730e80654949b760998914a5b735821068df4769a66b907b1bd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 333c095dd332e2c1983fe035c9141eadccd2ee46e36c99c4c9c4aed5ca4889d1
[INFO] running `Command { std: "docker" "start" "-a" "333c095dd332e2c1983fe035c9141eadccd2ee46e36c99c4c9c4aed5ca4889d1", kill_on_drop: false }`
[INFO] [stderr]     Checking singleton v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting singleton v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/singleton.rs:87:40
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let mut cur_state = self.state.compare_and_swap(
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/singleton.rs:104:44
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     cur_state = self.state.compare_and_swap(
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.47s
[INFO] running `Command { std: "docker" "inspect" "333c095dd332e2c1983fe035c9141eadccd2ee46e36c99c4c9c4aed5ca4889d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "333c095dd332e2c1983fe035c9141eadccd2ee46e36c99c4c9c4aed5ca4889d1", kill_on_drop: false }`
[INFO] [stdout] 333c095dd332e2c1983fe035c9141eadccd2ee46e36c99c4c9c4aed5ca4889d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] eee5832d30038d225f552d400bc334e50d6ee27631fa447834c56f41e2ae6b3f
[INFO] running `Command { std: "docker" "start" "-a" "eee5832d30038d225f552d400bc334e50d6ee27631fa447834c56f41e2ae6b3f", kill_on_drop: false }`
[INFO] [stderr]  Documenting singleton v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "eee5832d30038d225f552d400bc334e50d6ee27631fa447834c56f41e2ae6b3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eee5832d30038d225f552d400bc334e50d6ee27631fa447834c56f41e2ae6b3f", kill_on_drop: false }`
[INFO] [stdout] eee5832d30038d225f552d400bc334e50d6ee27631fa447834c56f41e2ae6b3f