[INFO] cloning repository https://github.com/ChristianVisintin/studying-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ChristianVisintin/studying-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianVisintin%2Fstudying-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianVisintin%2Fstudying-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8d4bf2d168261af97fe4368bfdf641e413a60f5
[INFO] documenting ChristianVisintin/studying-rust against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChristianVisintin%2Fstudying-rust" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChristianVisintin/studying-rust 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 git repo https://github.com/ChristianVisintin/studying-rust
[INFO] finished tweaking git repo https://github.com/ChristianVisintin/studying-rust
[INFO] tweaked toml for git repo https://github.com/ChristianVisintin/studying-rust written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/ChristianVisintin/studying-rust 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stdout] 049e1b0bea706c9eaaabc36a5c42931b8f7670fe48b9693714e61d964323c2c6
[INFO] running `Command { std: "docker" "start" "-a" "049e1b0bea706c9eaaabc36a5c42931b8f7670fe48b9693714e61d964323c2c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "049e1b0bea706c9eaaabc36a5c42931b8f7670fe48b9693714e61d964323c2c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "049e1b0bea706c9eaaabc36a5c42931b8f7670fe48b9693714e61d964323c2c6", kill_on_drop: false }`
[INFO] [stdout] 049e1b0bea706c9eaaabc36a5c42931b8f7670fe48b9693714e61d964323c2c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 674766bb8f4365bfb21a8c107f0889455ce15265d8be9ba48e70f410c4b68704
[INFO] running `Command { std: "docker" "start" "-a" "674766bb8f4365bfb21a8c107f0889455ce15265d8be9ba48e70f410c4b68704", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]  Documenting myfirstmodule v0.1.0 (/opt/rustwide/workdir/myfirstmodule)
[INFO] [stderr]  Documenting datatypes v0.1.0 (/opt/rustwide/workdir/datatypes)
[INFO] [stderr]  Documenting control-flow v0.1.0 (/opt/rustwide/workdir/control-flow)
[INFO] [stderr]  Documenting hello-rust v0.1.0 (/opt/rustwide/workdir/hello-rust)
[INFO] [stderr]  Documenting collections v0.1.0 (/opt/rustwide/workdir/collections)
[INFO] [stderr]  Documenting multi-threading v0.1.0 (/opt/rustwide/workdir/multi-threading)
[INFO] [stderr]  Documenting generics v0.1.0 (/opt/rustwide/workdir/generics)
[INFO] [stderr]  Documenting ownership v0.1.0 (/opt/rustwide/workdir/ownership)
[INFO] [stderr]  Documenting tests v0.1.0 (/opt/rustwide/workdir/tests)
[INFO] [stderr]  Documenting structs v0.1.0 (/opt/rustwide/workdir/structs)
[INFO] [stderr]  Documenting errors v0.1.0 (/opt/rustwide/workdir/errors)
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr] error: could not document `structs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name structs structs/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b82a5a21a84f330c -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "674766bb8f4365bfb21a8c107f0889455ce15265d8be9ba48e70f410c4b68704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "674766bb8f4365bfb21a8c107f0889455ce15265d8be9ba48e70f410c4b68704", kill_on_drop: false }`
[INFO] [stdout] 674766bb8f4365bfb21a8c107f0889455ce15265d8be9ba48e70f410c4b68704