[INFO] fetching crate mail_slot 0.1.3...
[INFO] documenting mail_slot-0.1.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate mail_slot 0.1.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mail_slot 0.1.3 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mail_slot 0.1.3
[INFO] finished tweaking crates.io crate mail_slot 0.1.3
[INFO] tweaked toml for crates.io crate mail_slot 0.1.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate mail_slot 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 959083d8e45f2244ff86c43b7454a4b34fa45f30d5e88e0f20aa8b5231cc2030
[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" "959083d8e45f2244ff86c43b7454a4b34fa45f30d5e88e0f20aa8b5231cc2030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "959083d8e45f2244ff86c43b7454a4b34fa45f30d5e88e0f20aa8b5231cc2030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "959083d8e45f2244ff86c43b7454a4b34fa45f30d5e88e0f20aa8b5231cc2030", kill_on_drop: false }`
[INFO] [stdout] 959083d8e45f2244ff86c43b7454a4b34fa45f30d5e88e0f20aa8b5231cc2030
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d0443a2dc950f33350290f995dea1c50341a26ae5e3bdbe30ea59caca5cab5d
[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" "7d0443a2dc950f33350290f995dea1c50341a26ae5e3bdbe30ea59caca5cab5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]  Documenting mail_slot v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stdout]   --> src/lib.rs:19:39
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::{ffi::OsStr, iter::once, os::windows::ffi::OsStrExt};
[INFO] [stdout]    |                                       ^^^^^^^ could not find `windows` in `os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stdout]  --> src/server.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     os::windows::io::{AsRawHandle, FromRawHandle},
[INFO] [stdout]   |         ^^^^^^^ could not find `windows` in `os`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `um` in `winapi`
[INFO] [stdout]  --> src/server.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use winapi::um::{
[INFO] [stdout]   |             ^^ could not find `um` in `winapi`
[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 `mail_slot`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name mail_slot 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 --extern winapi=/opt/rustwide/target/debug/deps/libwinapi-82addabfc86b60a5.rmeta --cap-lints=warn --crate-version 0.1.3` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "7d0443a2dc950f33350290f995dea1c50341a26ae5e3bdbe30ea59caca5cab5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d0443a2dc950f33350290f995dea1c50341a26ae5e3bdbe30ea59caca5cab5d", kill_on_drop: false }`
[INFO] [stdout] 7d0443a2dc950f33350290f995dea1c50341a26ae5e3bdbe30ea59caca5cab5d