[INFO] cloning repository https://github.com/quartiq/thermostat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quartiq/thermostat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquartiq%2Fthermostat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquartiq%2Fthermostat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1fc3131baaf6dfd6b3e47f4be5e1d7187858d126
[INFO] testing quartiq/thermostat against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquartiq%2Fthermostat" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quartiq/thermostat on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] started tweaking git repo https://github.com/quartiq/thermostat
[INFO] finished tweaking git repo https://github.com/quartiq/thermostat
[INFO] tweaked toml for git repo https://github.com/quartiq/thermostat written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/quartiq/thermostat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d1b1a059ef790bbe2cf46bbd466fa0704782d126a75558a208f563d5d7e15df
[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" "9d1b1a059ef790bbe2cf46bbd466fa0704782d126a75558a208f563d5d7e15df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d1b1a059ef790bbe2cf46bbd466fa0704782d126a75558a208f563d5d7e15df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d1b1a059ef790bbe2cf46bbd466fa0704782d126a75558a208f563d5d7e15df", kill_on_drop: false }`
[INFO] [stdout] 9d1b1a059ef790bbe2cf46bbd466fa0704782d126a75558a208f563d5d7e15df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "RUSTFLAGS=--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" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17f2976d6ee5d5806af67dedce892716c7d6e14ee767f8397b7958df49d22685
[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" "17f2976d6ee5d5806af67dedce892716c7d6e14ee767f8397b7958df49d22685", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling cortex-m v0.6.3
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling usb-device v0.2.5
[INFO] [stderr]    Compiling synopsys-usb-otg v0.2.2
[INFO] [stderr]    Compiling stm32f4 v0.11.0
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling cortex-m-log v0.6.2
[INFO] [stderr]    Compiling managed v0.7.2
[INFO] [stderr]    Compiling thermostat v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling postcard-cobs v0.1.5-pre
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling embedded-dma v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling eeprom24x v0.3.0
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling usbd-serial v0.1.0
[INFO] [stderr]    Compiling smoltcp v0.6.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]    Compiling cortex-m-rt v0.6.12
[INFO] [stderr]    Compiling uom v0.29.0
[INFO] [stderr]    Compiling serde-json-core v0.1.0
[INFO] [stderr]    Compiling postcard v0.5.1
[INFO] [stderr]    Compiling stm32f4xx-hal v0.8.3 (https://github.com/stm32-rs/stm32f4xx-hal.git#4a1a019f)
[INFO] [stderr]    Compiling stm32-eth v0.2.0 (https://github.com/stm32-rs/stm32-eth.git#4d6b29bf)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(maybe_uninit_extra, maybe_uninit_ref)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `assume_init_ref` found for union `core::mem::MaybeUninit<usb_device::bus::UsbBusAllocator<stm32f4xx_hal::otg_fs::UsbBus<stm32f4xx_hal::otg_fs::USB>>>` in the current scope
[INFO] [stdout]   --> src/usb.rs:29:32
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let bus = unsafe { BUS.assume_init_ref() };
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `assume_init`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thermostat`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "17f2976d6ee5d5806af67dedce892716c7d6e14ee767f8397b7958df49d22685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17f2976d6ee5d5806af67dedce892716c7d6e14ee767f8397b7958df49d22685", kill_on_drop: false }`
[INFO] [stdout] 17f2976d6ee5d5806af67dedce892716c7d6e14ee767f8397b7958df49d22685
