[INFO] updating cached repository https://github.com/connec/kvs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] afdf5b99b4c0ccf111900cc121486f05e1e54be1
[INFO] documenting connec/kvs against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnec%2Fkvs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/connec/kvs 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 git repo https://github.com/connec/kvs
[INFO] finished tweaking git repo https://github.com/connec/kvs
[INFO] tweaked toml for git repo https://github.com/connec/kvs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/connec/kvs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--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-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] [stdout] d469f69bf188679cf08ca08a564e696f6f808eca8af91bbca59055f5dba289e4
[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" "d469f69bf188679cf08ca08a564e696f6f808eca8af91bbca59055f5dba289e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d469f69bf188679cf08ca08a564e696f6f808eca8af91bbca59055f5dba289e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d469f69bf188679cf08ca08a564e696f6f808eca8af91bbca59055f5dba289e4", kill_on_drop: false }`
[INFO] [stdout] d469f69bf188679cf08ca08a564e696f6f808eca8af91bbca59055f5dba289e4
[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] [stdout] 6b818885bbd02e9ac63ccb7428c4eb863e7dc4a092026684bc4c91f620f7b534
[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" "6b818885bbd02e9ac63ccb7428c4eb863e7dc4a092026684bc4c91f620f7b534", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking historian v4.0.3
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking tempfile v3.0.8
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking rmp v0.8.7
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]     Checking serde v1.0.92
[INFO] [stderr]     Checking hashbrown v0.3.1
[INFO] [stderr]     Checking bincode v1.1.4
[INFO] [stderr]     Checking serde_bytes v0.11.1
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking pagecache v0.17.0
[INFO] [stderr]     Checking sled v0.24.1
[INFO] [stderr]     Checking kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/engine/kvs.rs:274:17
[INFO] [stdout]     |
[INFO] [stdout] 274 |                 mem::replace(old_entry, new_entry);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[MessagePack]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/engine/kvs.rs:22:65
[INFO] [stdout]    |
[INFO] [stdout] 22 | /// be considered opaque (currently they contain a sequence of [MessagePack]-encoded 'commands', the
[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: `[NotFound]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/protocol.rs:10:46
[INFO] [stdout]    |
[INFO] [stdout] 10 |     /// The server will respond with either [`NotFound`], if the key is not in the store, or
[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: `[Found]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/protocol.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     /// [`Found`], if the key is in the store (or [`Err`]).
[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: `[Get]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/protocol.rs:43:38
[INFO] [stdout]    |
[INFO] [stdout] 43 |     /// Indicates that the key in a [`Get`] request was not found in the store.
[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: `[Get]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/protocol.rs:46:38
[INFO] [stdout]    |
[INFO] [stdout] 46 |     /// Indicates that the key in a [`Get`] request was found in the store.
[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: `[MessagePack]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/engine/kvs.rs:22:65
[INFO] [stdout]    |
[INFO] [stdout] 22 | /// be considered opaque (currently they contain a sequence of [MessagePack]-encoded 'commands', the
[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: `[server::Server]` cannot be resolved, ignoring it.
[INFO] [stdout]  --> src/engine.rs:9:46
[INFO] [stdout]   |
[INFO] [stdout] 9 | /// Defines the storage interface used from [`server::Server`].
[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: `[server::Server]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/engine.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | /// [`server::Server`]:
[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: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.16s
[INFO] running `Command { std: "docker" "inspect" "6b818885bbd02e9ac63ccb7428c4eb863e7dc4a092026684bc4c91f620f7b534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b818885bbd02e9ac63ccb7428c4eb863e7dc4a092026684bc4c91f620f7b534", kill_on_drop: false }`
[INFO] [stdout] 6b818885bbd02e9ac63ccb7428c4eb863e7dc4a092026684bc4c91f620f7b534