[INFO] fetching crate buf 0.2.3...
[INFO] documenting buf-0.2.3 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate buf 0.2.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate buf 0.2.3 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 buf 0.2.3
[INFO] finished tweaking crates.io crate buf 0.2.3
[INFO] tweaked toml for crates.io crate buf 0.2.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded abort v0.1.3
[INFO] [stderr]   Downloaded fallible v0.1.3
[INFO] [stderr]   Downloaded i-o v0.4.7
[INFO] [stderr]   Downloaded ptr v0.2.3
[INFO] [stderr]   Downloaded containers v0.9.13
[INFO] [stderr]   Downloaded default_allocator v0.3.0
[INFO] [stderr]   Downloaded hash-table v0.2.5
[INFO] [stderr]   Downloaded heap v0.1.0
[INFO] [stderr]   Downloaded rel v0.2.0
[INFO] [stderr]   Downloaded loca v0.7.4
[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" "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] 65ce94af0ef005e06718347f4fb784949760e0501efcd95af1f8218f7b85d413
[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" "65ce94af0ef005e06718347f4fb784949760e0501efcd95af1f8218f7b85d413", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65ce94af0ef005e06718347f4fb784949760e0501efcd95af1f8218f7b85d413", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65ce94af0ef005e06718347f4fb784949760e0501efcd95af1f8218f7b85d413", kill_on_drop: false }`
[INFO] [stdout] 65ce94af0ef005e06718347f4fb784949760e0501efcd95af1f8218f7b85d413
[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" "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] 9997c3d4cce27a5b7b76b7b483dbbd95b4faeedaadb47c9aa066cfbce7856425
[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" "9997c3d4cce27a5b7b76b7b483dbbd95b4faeedaadb47c9aa066cfbce7856425", kill_on_drop: false }`
[INFO] [stderr]    Compiling ptr v0.2.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling hash-table v0.2.5
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]    Compiling containers v0.9.13
[INFO] [stderr]     Checking rel v0.2.0
[INFO] [stderr]     Checking abort v0.1.3
[INFO] [stderr]     Checking heap v0.1.0
[INFO] [stderr]    Compiling i-o v0.4.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking fallible v0.1.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr] error: Cannot set `RUSTC_BOOTSTRAP=1` from build script of `i-o v0.4.7`.
[INFO] [stderr] note: Crates cannot set `RUSTC_BOOTSTRAP` themselves, as doing so would subvert the stability guarantees of Rust for your project.
[INFO] [stderr] help: If you're sure you want to do this in your project, set the environment variable `RUSTC_BOOTSTRAP=io` before running cargo instead.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9997c3d4cce27a5b7b76b7b483dbbd95b4faeedaadb47c9aa066cfbce7856425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9997c3d4cce27a5b7b76b7b483dbbd95b4faeedaadb47c9aa066cfbce7856425", kill_on_drop: false }`
[INFO] [stdout] 9997c3d4cce27a5b7b76b7b483dbbd95b4faeedaadb47c9aa066cfbce7856425