[INFO] fetching crate xiao_m0 0.7.0...
[INFO] documenting xiao_m0-0.7.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate xiao_m0 0.7.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate xiao_m0 0.7.0 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] removed /workspace/builds/worker-9/source/.cargo/config
[INFO] started tweaking crates.io crate xiao_m0 0.7.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate xiao_m0 0.7.0
[INFO] tweaked toml for crates.io crate xiao_m0 0.7.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate xiao_m0 0.7.0 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-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" "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] 5ae973fb0cbfc2987f87b2e337e6bc5e2143837a2f20a952ec79fb638483c306
[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" "5ae973fb0cbfc2987f87b2e337e6bc5e2143837a2f20a952ec79fb638483c306", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ae973fb0cbfc2987f87b2e337e6bc5e2143837a2f20a952ec79fb638483c306", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ae973fb0cbfc2987f87b2e337e6bc5e2143837a2f20a952ec79fb638483c306", kill_on_drop: false }`
[INFO] [stdout] 5ae973fb0cbfc2987f87b2e337e6bc5e2143837a2f20a952ec79fb638483c306
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c84e1d9d4d285030aede82208cf4d94f85c199999262dd32c7d5e3531ac6b40f
[INFO] running `Command { std: "docker" "start" "-a" "c84e1d9d4d285030aede82208cf4d94f85c199999262dd32c7d5e3531ac6b40f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling atsamd21g18a v0.7.0
[INFO] [stderr]     Checking aligned v0.3.3
[INFO] [stderr]     Checking cortex-m v0.6.3
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking cortex-m-rt v0.6.12
[INFO] [stderr]     Checking atsamd-hal v0.9.0
[INFO] [stderr]  Documenting xiao_m0 v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.95s
[INFO] running `Command { std: "docker" "inspect" "c84e1d9d4d285030aede82208cf4d94f85c199999262dd32c7d5e3531ac6b40f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c84e1d9d4d285030aede82208cf4d94f85c199999262dd32c7d5e3531ac6b40f", kill_on_drop: false }`
[INFO] [stdout] c84e1d9d4d285030aede82208cf4d94f85c199999262dd32c7d5e3531ac6b40f