[INFO] cloning repository https://github.com/RustyGecko/sensor-tracker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RustyGecko/sensor-tracker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustyGecko%2Fsensor-tracker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustyGecko%2Fsensor-tracker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 453510e4acec853e4a3229d488c093e91a596b69
[INFO] documenting RustyGecko/sensor-tracker 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%2FRustyGecko%2Fsensor-tracker" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RustyGecko/sensor-tracker 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 git repo https://github.com/RustyGecko/sensor-tracker
[INFO] finished tweaking git repo https://github.com/RustyGecko/sensor-tracker
[INFO] tweaked toml for git repo https://github.com/RustyGecko/sensor-tracker written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/RustyGecko/sensor-tracker 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]     Updating git repository `https://github.com/RustyGecko/rust-alloc.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/cmsis.git`
[INFO] [stderr]     Updating git submodule `https://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rust-collections.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rust-core.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/emdrv.git`
[INFO] [stderr]     Updating git submodule `https://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/emlib.git`
[INFO] [stderr]     Updating git submodule `git://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git submodule `https://github.com/ThrowTheSwitch/Unity.git`
[INFO] [stderr]     Updating git submodule `https://github.com/ThrowTheSwitch/CMock.git`
[INFO] [stderr]     Updating git submodule `https://github.com/throwtheswitch/cexception.git`
[INFO] [stderr]     Updating git submodule `https://github.com/throwtheswitch/unity.git`
[INFO] [stderr]     Updating git submodule `https://github.com/throwtheswitch/unity.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/kits.git`
[INFO] [stderr]     Updating git submodule `https://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rust-libc.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/modules.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/sensors.git`
[INFO] [stderr]     Updating git submodule `https://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git repository `https://github.com/sondrele/rust-src.git`
[INFO] [stderr]     Updating git repository `https://github.com/sondrele/gcc-rs.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rust-unicode.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rlibc.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/startup.git`
[INFO] [stderr]     Updating git submodule `https://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rust-alloc.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/cmsis.git`
[INFO] [stderr]     Updating git submodule `https://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rust-collections.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rust-core.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/emdrv.git`
[INFO] [stderr]     Updating git submodule `https://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/emlib.git`
[INFO] [stderr]     Updating git submodule `git://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git submodule `https://github.com/ThrowTheSwitch/Unity.git`
[INFO] [stderr]     Updating git submodule `https://github.com/ThrowTheSwitch/CMock.git`
[INFO] [stderr]     Updating git submodule `https://github.com/throwtheswitch/cexception.git`
[INFO] [stderr]     Updating git submodule `https://github.com/throwtheswitch/unity.git`
[INFO] [stderr]     Updating git submodule `https://github.com/throwtheswitch/unity.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/kits.git`
[INFO] [stderr]     Updating git submodule `https://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rust-libc.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/modules.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/sensors.git`
[INFO] [stderr]     Updating git submodule `https://github.com/RustyGecko/efm32-common.git`
[INFO] [stderr]     Updating git repository `https://github.com/sondrele/rust-src.git`
[INFO] [stderr]     Updating git repository `https://github.com/sondrele/gcc-rs.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rust-unicode.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/rlibc.git`
[INFO] [stderr]     Updating git repository `https://github.com/RustyGecko/startup.git`
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded submodules v0.1.0
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2b919f9f0c4f4b52074d3c472188001df4379e9a6d904dea268bdc8aa885ae67
[INFO] running `Command { std: "docker" "start" "-a" "2b919f9f0c4f4b52074d3c472188001df4379e9a6d904dea268bdc8aa885ae67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b919f9f0c4f4b52074d3c472188001df4379e9a6d904dea268bdc8aa885ae67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b919f9f0c4f4b52074d3c472188001df4379e9a6d904dea268bdc8aa885ae67", kill_on_drop: false }`
[INFO] [stdout] 2b919f9f0c4f4b52074d3c472188001df4379e9a6d904dea268bdc8aa885ae67
[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] 6b992ab8b8f578e57cb124eba41698b1d314627bccb2241e209774d0a5bf5d55
[INFO] running `Command { std: "docker" "start" "-a" "6b992ab8b8f578e57cb124eba41698b1d314627bccb2241e209774d0a5bf5d55", kill_on_drop: false }`
[INFO] [stderr]  Documenting sensor-tracker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0259]: the name `core` is defined multiple times
[INFO] [stdout]  --> src/main.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate core;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^ `core` reimported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `core` must be defined only once in the type namespace of this module
[INFO] [stdout] help: you can use `as` to change the binding name of the import
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate core as other_core;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `emlib`
[INFO] [stdout]  --> src/main.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | extern crate emlib;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0259, E0463.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0259`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `sensor-tracker`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name sensor_tracker src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "6b992ab8b8f578e57cb124eba41698b1d314627bccb2241e209774d0a5bf5d55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b992ab8b8f578e57cb124eba41698b1d314627bccb2241e209774d0a5bf5d55", kill_on_drop: false }`
[INFO] [stdout] 6b992ab8b8f578e57cb124eba41698b1d314627bccb2241e209774d0a5bf5d55