[INFO] cloning repository https://github.com/nstott/rstatsd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nstott/rstatsd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnstott%2Frstatsd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnstott%2Frstatsd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee5233b83ea44cfdc6a9f596e15bf6945836bee8
[INFO] documenting nstott/rstatsd against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnstott%2Frstatsd" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nstott/rstatsd on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nstott/rstatsd
[INFO] finished tweaking git repo https://github.com/nstott/rstatsd
[INFO] tweaked toml for git repo https://github.com/nstott/rstatsd written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/nstott/rstatsd already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97cddb6d6205a98af601422f62fe38f764d58b9ab007889cd969365a007f657d
[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" "97cddb6d6205a98af601422f62fe38f764d58b9ab007889cd969365a007f657d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97cddb6d6205a98af601422f62fe38f764d58b9ab007889cd969365a007f657d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97cddb6d6205a98af601422f62fe38f764d58b9ab007889cd969365a007f657d", kill_on_drop: false }`
[INFO] [stdout] 97cddb6d6205a98af601422f62fe38f764d58b9ab007889cd969365a007f657d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1bec1672131121dab0035ec3bf33ab78e645231d2d18443d4d9e236926078da
[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" "e1bec1672131121dab0035ec3bf33ab78e645231d2d18443d4d9e236926078da", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]  Documenting rstatsd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `log::LogRecord`, `log::LogLevel`, `log::LogMetadata`, `log::LogLevelFilter`
[INFO] [stdout]  --> src/simplelogger/mod.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{LogRecord, LogLevel, LogMetadata, LogLevelFilter, SetLoggerError};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^^^ no `LogLevelFilter` in the root
[INFO] [stdout]   |           |          |         |
[INFO] [stdout]   |           |          |         no `LogMetadata` in the root
[INFO] [stdout]   |           |          no `LogLevel` in the root
[INFO] [stdout]   |           no `LogRecord` in the root
[INFO] [stdout]   |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{Record, LogLevel, LogMetadata, LogLevelFilter, SetLoggerError};
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{LogRecord, LogLevel, Metadata, LogLevelFilter, SetLoggerError};
[INFO] [stdout]   |                                ^^^^^^^^
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{LogRecord, LogLevel, LogMetadata, LevelFilter, SetLoggerError};
[INFO] [stdout]   |                                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `select` in this scope
[INFO] [stdout]   --> src/metric_store.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 select!(
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(mpsc_select, drain)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `rstatsd`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name rstatsd src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern log=/opt/rustwide/target/debug/deps/liblog-75d540134d633bf3.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "e1bec1672131121dab0035ec3bf33ab78e645231d2d18443d4d9e236926078da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1bec1672131121dab0035ec3bf33ab78e645231d2d18443d4d9e236926078da", kill_on_drop: false }`
[INFO] [stdout] e1bec1672131121dab0035ec3bf33ab78e645231d2d18443d4d9e236926078da