[INFO] fetching crate uuid_v1 0.1.2...
[INFO] documenting uuid_v1-0.1.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate uuid_v1 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate uuid_v1 0.1.2 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 uuid_v1 0.1.2
[INFO] finished tweaking crates.io crate uuid_v1 0.1.2
[INFO] tweaked toml for crates.io crate uuid_v1 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ip v1.1.1
[INFO] [stderr]   Downloaded interfaces v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 92c4344a7311d65ff8cf271fc0a35cc767a245427ceddb0e45be0d79e58903e7
[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" "92c4344a7311d65ff8cf271fc0a35cc767a245427ceddb0e45be0d79e58903e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92c4344a7311d65ff8cf271fc0a35cc767a245427ceddb0e45be0d79e58903e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92c4344a7311d65ff8cf271fc0a35cc767a245427ceddb0e45be0d79e58903e7", kill_on_drop: false }`
[INFO] [stdout] 92c4344a7311d65ff8cf271fc0a35cc767a245427ceddb0e45be0d79e58903e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 0713841c38d1260e0f03f5fe15da04f68b2cea2a4bfdb10e6d1bf6efc8641d63
[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" "0713841c38d1260e0f03f5fe15da04f68b2cea2a4bfdb10e6d1bf6efc8641d63", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.4.19
[INFO] [stderr]     Checking ip v1.1.1
[INFO] [stderr]    Compiling handlebars v0.16.1
[INFO] [stderr]    Compiling interfaces v0.0.1
[INFO] [stderr] error: failed to run custom build command for `interfaces v0.0.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/interfaces-4b93804e7ee48207/build-script-build` (exit code: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   Error creating `constants.c` from template
[INFO] [stderr]   -> IoError(Os { code: 30, kind: Other, message: "Read-only file system" })
[INFO] running `Command { std: "docker" "inspect" "0713841c38d1260e0f03f5fe15da04f68b2cea2a4bfdb10e6d1bf6efc8641d63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0713841c38d1260e0f03f5fe15da04f68b2cea2a4bfdb10e6d1bf6efc8641d63", kill_on_drop: false }`
[INFO] [stdout] 0713841c38d1260e0f03f5fe15da04f68b2cea2a4bfdb10e6d1bf6efc8641d63