[INFO] updating cached repository https://github.com/bentwire/stm32f072-usb-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a76e98b6408fd1d5b635020ef4552cffa45dd4f
[INFO] testing bentwire/stm32f072-usb-test against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbentwire%2Fstm32f072-usb-test" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bentwire/stm32f072-usb-test on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/.cargo/config
[INFO] started tweaking git repo https://github.com/bentwire/stm32f072-usb-test
[INFO] finished tweaking git repo https://github.com/bentwire/stm32f072-usb-test
[INFO] tweaked toml for git repo https://github.com/bentwire/stm32f072-usb-test written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/bentwire/stm32f072-usb-test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 53ba8ca589e68e169fd55caac5aa4640dbbf5ade071bd5654a8674ff9e585bf1
[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" "53ba8ca589e68e169fd55caac5aa4640dbbf5ade071bd5654a8674ff9e585bf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53ba8ca589e68e169fd55caac5aa4640dbbf5ade071bd5654a8674ff9e585bf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53ba8ca589e68e169fd55caac5aa4640dbbf5ade071bd5654a8674ff9e585bf1", kill_on_drop: false }`
[INFO] [stdout] 53ba8ca589e68e169fd55caac5aa4640dbbf5ade071bd5654a8674ff9e585bf1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d410a7fe8c95a961ea72b81a67e421d6177d15e911e329dc57f68bcf607d2e1
[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" "4d410a7fe8c95a961ea72b81a67e421d6177d15e911e329dc57f68bcf607d2e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling cortex-m v0.6.0
[INFO] [stderr]    Compiling vcell v0.1.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.8
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling heapless v0.4.4
[INFO] [stderr]    Compiling nb v0.1.2
[INFO] [stderr]    Compiling stm32f0 v0.7.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.3
[INFO] [stderr]    Compiling aligned v0.2.0
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling usb-device v0.2.1
[INFO] [stderr]    Compiling cortex-m-rtfm v0.4.3
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling embedded-hal v0.2.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling hash32 v0.1.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling generic-array v0.11.1
[INFO] [stderr]    Compiling as-slice v0.1.0
[INFO] [stderr]    Compiling aligned v0.3.1
[INFO] [stderr]    Compiling panic-semihosting v0.5.2
[INFO] [stderr]    Compiling usbd-serial v0.1.0 (https://github.com/mvirkkunen/usbd-serial#cb18cef7)
[INFO] [stderr]    Compiling digital-filter v0.1.0 (https://github.com/bentwire/digital-filter.git#47339eff)
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.5
[INFO] [stderr]    Compiling owned-singleton-macros v0.1.0
[INFO] [stderr]    Compiling cortex-m-rtfm-macros v0.4.3
[INFO] [stderr]    Compiling owned-singleton v0.1.0
[INFO] [stderr]    Compiling stm32f0xx-hal v0.14.1
[INFO] [stderr]    Compiling stm32-usbd v0.2.1
[INFO] [stderr]    Compiling stm32f072-usb-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `dac`
[INFO] [stdout]   --> src/main.rs:19:26
[INFO] [stdout]    |
[INFO] [stdout] 19 | use stm32f0::stm32f0x2::{dac, Interrupt};
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `digital_filter::DigitalFilter`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use digital_filter::DigitalFilter;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fmt::Write`
[INFO] [stdout]   --> src/main.rs:32:27
[INFO] [stdout]    |
[INFO] [stdout] 32 | use core::{cell::RefCell, fmt::Write, ops::DerefMut};
[INFO] [stdout]    |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-07-24-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/cortex-m-rt-33908e58bdc08581/out" "-L" "/opt/rustwide/target/debug/build/stm32f0-9874162aa8bf649d/out" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2020-07-24-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libstm32_usbd-76badb163575a00d.rlib" "/opt/rustwide/target/debug/deps/libcortex_m-959f557710f28b47.rlib" "/opt/rustwide/target/debug/deps/libaligned-966872b0b4d763c5.rlib" "/opt/rustwide/target/debug/deps/libdigital_filter-0cace8e8b8609e87.rlib" "/opt/rustwide/target/debug/deps/libheapless-ef39a27fa874af65.rlib" "/opt/rustwide/target/debug/deps/libhash32-a7cd3d01fe679a66.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-7292ee2b00d6b364.rlib" "/opt/rustwide/target/debug/deps/libgeneric_array-11b355ffd8abc6e2.rlib" "/opt/rustwide/target/debug/deps/libstm32f0xx_hal-f567e02aeafaadf4.rlib" "/opt/rustwide/target/debug/deps/libcast-5278f7ed37d4aa4a.rlib" "/opt/rustwide/target/debug/deps/libembedded_hal-7522702d051bdf18.rlib" "/opt/rustwide/target/debug/deps/libvoid-9a3710cb9d0e15bd.rlib" "/opt/rustwide/target/debug/deps/libnb-17ca41ce9efa4f5c.rlib" "/opt/rustwide/target/debug/deps/libusbd_serial-9cddc49f7ab00649.rlib" "/opt/rustwide/target/debug/deps/libusb_device-8439f5128101506f.rlib" "/opt/rustwide/target/debug/deps/libstm32f0-4e1d66c9d66133cd.rlib" "/opt/rustwide/target/debug/deps/libcortex_m_rt-7d7a91a0ef524cc1.rlib" "/opt/rustwide/target/debug/deps/libr0-6c96b1ae34c60772.rlib" "-Wl,--start-group" "/opt/rustwide/target/debug/deps/libpanic_semihosting-2dcbe14ae822d10f.rlib" "/opt/rustwide/target/debug/deps/libcortex_m_semihosting-c1a9b352f6c161de.rlib" "/opt/rustwide/target/debug/deps/libcortex_m-70c9a73e888cbd9c.rlib" "/opt/rustwide/target/debug/deps/libvolatile_register-f9358514d884e0f1.rlib" "/opt/rustwide/target/debug/deps/libvcell-d6ce923bff121ead.rlib" "/opt/rustwide/target/debug/deps/libbare_metal-8543257393bab655.rlib" "/opt/rustwide/target/debug/deps/libaligned-b27b5bc1b7855a99.rlib" "/opt/rustwide/target/debug/deps/libas_slice-f305fb560baf9309.rlib" "/opt/rustwide/target/debug/deps/libstable_deref_trait-5f60ee49025af8f7.rlib" "/opt/rustwide/target/debug/deps/libgeneric_array-2f91eb1052e3fc53.rlib" "/opt/rustwide/target/debug/deps/libtypenum-c64e4a278d562809.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-07-24-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-5eb391c8dabdee77.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2020-07-24-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-b0689b528b222bee.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2020-07-24-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ed072ac495e62e7a.rlib" "-Wl,-Bdynamic"
[INFO] [stdout]   = note: /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
[INFO] [stdout]           (.text+0x16): undefined reference to `__libc_csu_fini'
[INFO] [stdout]           /usr/bin/ld: (.text+0x1d): undefined reference to `__libc_csu_init'
[INFO] [stdout]           /usr/bin/ld: (.text+0x2a): undefined reference to `__libc_start_main'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.0.rcgu.o: in function `usb_device::device::UsbDevice<B>::build':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/usb-device-0.2.1/src/device.rs:84: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/usb-device-0.2.1/src/device.rs:82: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/usb-device-0.2.1/src/device.rs:82: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.1.rcgu.o: in function `core::mem::maybe_uninit::MaybeUninit<T>::assume_init':
[INFO] [stdout]           /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libcore/mem/maybe_uninit.rs:501: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.1.rcgu.o: in function `core::mem::manually_drop::ManuallyDrop<T>::into_inner':
[INFO] [stdout]           /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libcore/mem/manually_drop.rs:101: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/stm32f072_usb_test-a6f7edf36f7ae148.stm32f072_usb_test.7aewykun-cgu.1.rcgu.o:/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stm32-usbd-0.2.1/src/bus.rs:38: more undefined references to `memcpy' follow
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libcortex_m_semihosting-c1a9b352f6c161de.rlib(cortex_m_semihosting-c1a9b352f6c161de.cortex_m_semihosting.3p83qrgq-cgu.10.rcgu.o): in function `core::fmt::Write::write_char':
[INFO] [stdout]           /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libcore/fmt/mod.rs:168: undefined reference to `memset'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libcortex_m_semihosting-c1a9b352f6c161de.rlib(cortex_m_semihosting-c1a9b352f6c161de.cortex_m_semihosting.3p83qrgq-cgu.10.rcgu.o): in function `core::fmt::Write::write_fmt':
[INFO] [stdout]           /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libcore/fmt/mod.rs:193: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libcortex_m_semihosting-c1a9b352f6c161de.rlib(cortex_m_semihosting-c1a9b352f6c161de.cortex_m_semihosting.3p83qrgq-cgu.10.rcgu.o): in function `<&mut W as core::fmt::Write>::write_fmt':
[INFO] [stdout]           /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libcore/fmt/mod.rs:208: undefined reference to `memcpy'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stm32f072-usb-test`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "4d410a7fe8c95a961ea72b81a67e421d6177d15e911e329dc57f68bcf607d2e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d410a7fe8c95a961ea72b81a67e421d6177d15e911e329dc57f68bcf607d2e1", kill_on_drop: false }`
[INFO] [stdout] 4d410a7fe8c95a961ea72b81a67e421d6177d15e911e329dc57f68bcf607d2e1