[INFO] fetching crate imagesnap 0.0.1...
[INFO] documenting imagesnap-0.0.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate imagesnap 0.0.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate imagesnap 0.0.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imagesnap 0.0.1
[INFO] finished tweaking crates.io crate imagesnap 0.0.1
[INFO] tweaked toml for crates.io crate imagesnap 0.0.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate imagesnap 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f962c473ad656ce942054f16209011ee40356712eedc27e7bb4b32c32bc1a17d
[INFO] running `Command { std: "docker" "start" "-a" "f962c473ad656ce942054f16209011ee40356712eedc27e7bb4b32c32bc1a17d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f962c473ad656ce942054f16209011ee40356712eedc27e7bb4b32c32bc1a17d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f962c473ad656ce942054f16209011ee40356712eedc27e7bb4b32c32bc1a17d", kill_on_drop: false }`
[INFO] [stdout] f962c473ad656ce942054f16209011ee40356712eedc27e7bb4b32c32bc1a17d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1034e2d2ed8a1f2ea0d8567274b59c812f6b7987ef9a44eef9c8d1b167d5496a
[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" "1034e2d2ed8a1f2ea0d8567274b59c812f6b7987ef9a44eef9c8d1b167d5496a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking futures-io v0.3.12
[INFO] [stderr]    Compiling imagesnap v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking fastrand v1.4.1
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]  Documenting imagesnap v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0583]: file not found for module `os`
[INFO] [stdout]   --> src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | mod os;
[INFO] [stdout]    | ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: to create the module `os`, create file "src/os.rs" or "src/os/mod.rs"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0583`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `imagesnap`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name imagesnap src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3bd0cc0d134ff3eb -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-5301fdc54d0f74b8.rmeta --extern futures_lite=/opt/rustwide/target/debug/deps/libfutures_lite-46fb0ca7705129cb.rmeta --extern getopts=/opt/rustwide/target/debug/deps/libgetopts-a9d9951be883d60d.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-85f96f892333cd5e.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-beaed55161ed77b4.rmeta --cap-lints=warn --crate-version 0.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1034e2d2ed8a1f2ea0d8567274b59c812f6b7987ef9a44eef9c8d1b167d5496a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1034e2d2ed8a1f2ea0d8567274b59c812f6b7987ef9a44eef9c8d1b167d5496a", kill_on_drop: false }`
[INFO] [stdout] 1034e2d2ed8a1f2ea0d8567274b59c812f6b7987ef9a44eef9c8d1b167d5496a