[INFO] cloning repository https://github.com/BBScholar/rmc_mag_encoder_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BBScholar/rmc_mag_encoder_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBBScholar%2Frmc_mag_encoder_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBBScholar%2Frmc_mag_encoder_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18dd56250cc68669b0b60a9d4126828a1a0fdb18
[INFO] documenting BBScholar/rmc_mag_encoder_rust against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBBScholar%2Frmc_mag_encoder_rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BBScholar/rmc_mag_encoder_rust 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-13/source/.cargo/config
[INFO] started tweaking git repo https://github.com/BBScholar/rmc_mag_encoder_rust
[INFO] finished tweaking git repo https://github.com/BBScholar/rmc_mag_encoder_rust
[INFO] tweaked toml for git repo https://github.com/BBScholar/rmc_mag_encoder_rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/BBScholar/rmc_mag_encoder_rust 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stm32f1xx-hal v0.5.3
[INFO] [stderr]   Downloaded stm32f1 v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] ec28f9aca8e3950f86e12f1cabe7747fab5b70fa505a66b2998db4b48ee062dc
[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" "ec28f9aca8e3950f86e12f1cabe7747fab5b70fa505a66b2998db4b48ee062dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec28f9aca8e3950f86e12f1cabe7747fab5b70fa505a66b2998db4b48ee062dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec28f9aca8e3950f86e12f1cabe7747fab5b70fa505a66b2998db4b48ee062dc", kill_on_drop: false }`
[INFO] [stdout] ec28f9aca8e3950f86e12f1cabe7747fab5b70fa505a66b2998db4b48ee062dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] e9c045ec7007dd9cc4ecdd113b9897709918a701bf80c95f21a8c40d1a47bb67
[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" "e9c045ec7007dd9cc4ecdd113b9897709918a701bf80c95f21a8c40d1a47bb67", kill_on_drop: false }`
[INFO] [stderr]    Compiling stm32f1 v0.9.0
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking as-slice v0.1.3
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking aligned v0.3.2
[INFO] [stderr]     Checking cortex-m v0.6.2
[INFO] [stderr]     Checking cortex-m-rt v0.6.12
[INFO] [stderr]     Checking stm32f1xx-hal v0.5.3
[INFO] [stderr]  Documenting mag_encoder_firmware v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.36s
[INFO] running `Command { std: "docker" "inspect" "e9c045ec7007dd9cc4ecdd113b9897709918a701bf80c95f21a8c40d1a47bb67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9c045ec7007dd9cc4ecdd113b9897709918a701bf80c95f21a8c40d1a47bb67", kill_on_drop: false }`
[INFO] [stdout] e9c045ec7007dd9cc4ecdd113b9897709918a701bf80c95f21a8c40d1a47bb67