[INFO] fetching crate signature 1.1.0...
[INFO] documenting signature-1.1.0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate signature 1.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate signature 1.1.0 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 signature 1.1.0
[INFO] finished tweaking crates.io crate signature 1.1.0
[INFO] tweaked toml for crates.io crate signature 1.1.0 written to /workspace/builds/worker-0/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] [stderr]     Blocking waiting for file lock on package cache
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 1f606d24a6b1d504aa57b151f245ffce51946d19aea408ae5bb1f2ac47e0ec83
[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" "1f606d24a6b1d504aa57b151f245ffce51946d19aea408ae5bb1f2ac47e0ec83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f606d24a6b1d504aa57b151f245ffce51946d19aea408ae5bb1f2ac47e0ec83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f606d24a6b1d504aa57b151f245ffce51946d19aea408ae5bb1f2ac47e0ec83", kill_on_drop: false }`
[INFO] [stdout] 1f606d24a6b1d504aa57b151f245ffce51946d19aea408ae5bb1f2ac47e0ec83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 5b93dba1f7ebf6af221ad00b63efecde77146294b8b91b724051039caf8317f7
[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" "5b93dba1f7ebf6af221ad00b63efecde77146294b8b91b724051039caf8317f7", kill_on_drop: false }`
[INFO] [stderr]  Documenting signature v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[DigestSigner]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:133:8
[INFO] [stdout]     |
[INFO] [stdout] 133 | //!   [`DigestSigner`] and [`DigestVerifier`], the `derive-preview` feature
[INFO] [stdout]     |        ^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:165:5
[INFO] [stdout]     |
[INFO] [stdout] 165 |     intra_doc_link_resolution_failure
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[DigestVerifier]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:133:29
[INFO] [stdout]     |
[INFO] [stdout] 133 | //!   [`DigestSigner`] and [`DigestVerifier`], the `derive-preview` feature
[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: `[PrehashSignature::Digest]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:135:36
[INFO] [stdout]     |
[INFO] [stdout] 135 | //!   the input message using the [`PrehashSignature::Digest`] algorithm for
[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: `[DigestSigner]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:141:38
[INFO] [stdout]     |
[INFO] [stdout] 141 | //! - `digest-preview`: enables the [`DigestSigner`] and [`DigestVerifier`]
[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: `[DigestVerifier]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:141:59
[INFO] [stdout]     |
[INFO] [stdout] 141 | //! - `digest-preview`: enables the [`DigestSigner`] and [`DigestVerifier`]
[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: `[RandomizedSigner]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:146:36
[INFO] [stdout]     |
[INFO] [stdout] 146 | //! - `rand-preview`: enables the [`RandomizedSigner`] trait for signature
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "5b93dba1f7ebf6af221ad00b63efecde77146294b8b91b724051039caf8317f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b93dba1f7ebf6af221ad00b63efecde77146294b8b91b724051039caf8317f7", kill_on_drop: false }`
[INFO] [stdout] 5b93dba1f7ebf6af221ad00b63efecde77146294b8b91b724051039caf8317f7