[INFO] cloning repository https://github.com/fijk/smtp-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fijk/smtp-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffijk%2Fsmtp-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffijk%2Fsmtp-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 621937ce802e273a2a0d5649af4ba9da8348d968
[INFO] documenting fijk/smtp-rs 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%2Ffijk%2Fsmtp-rs" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fijk/smtp-rs 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/fijk/smtp-rs
[INFO] finished tweaking git repo https://github.com/fijk/smtp-rs
[INFO] tweaked toml for git repo https://github.com/fijk/smtp-rs written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/fijk/smtp-rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 439bc704800d0afb838ce96a0a01e749001218e4a93d111a084f01d67251b4b8
[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" "439bc704800d0afb838ce96a0a01e749001218e4a93d111a084f01d67251b4b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "439bc704800d0afb838ce96a0a01e749001218e4a93d111a084f01d67251b4b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "439bc704800d0afb838ce96a0a01e749001218e4a93d111a084f01d67251b4b8", kill_on_drop: false }`
[INFO] [stdout] 439bc704800d0afb838ce96a0a01e749001218e4a93d111a084f01d67251b4b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 0d0cf30373fe76b33a99c800d0f9fd982a9e9e428f0e75bbd04ef1743088b411
[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" "0d0cf30373fe76b33a99c800d0f9fd982a9e9e428f0e75bbd04ef1743088b411", kill_on_drop: false }`
[INFO] [stderr]  Documenting smtp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `err` in `std`
[INFO] [stdout]   --> src/lib.rs:30:15
[INFO] [stdout]    |
[INFO] [stdout] 30 |     impl std::err::Error for SmtpCommandError {
[INFO] [stdout]    |               ^^^ could not find `err` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `hash_map` in `std`
[INFO] [stdout]   --> src/lib.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |         users: std::hash_map::HashMap<String, u64>,
[INFO] [stdout]    |                     ^^^^^^^^ could not find `hash_map` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `err` in `self`
[INFO] [stdout]    --> src/lib.rs:127:62
[INFO] [stdout]     |
[INFO] [stdout] 127 |         pub fn from(text: &str) -> Result<SmtpCommand, self::err::SmtpCommandError> {
[INFO] [stdout]     |                                                              ^^^ could not find `err` in `self`
[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] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `smtp`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name smtp src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "0d0cf30373fe76b33a99c800d0f9fd982a9e9e428f0e75bbd04ef1743088b411", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d0cf30373fe76b33a99c800d0f9fd982a9e9e428f0e75bbd04ef1743088b411", kill_on_drop: false }`
[INFO] [stdout] 0d0cf30373fe76b33a99c800d0f9fd982a9e9e428f0e75bbd04ef1743088b411