[INFO] cloning 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" "clone" "--bare" "https://github.com/bentwire/stm32f072-usb-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbentwire%2Fstm32f072-usb-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbentwire%2Fstm32f072-usb-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1a76e98b6408fd1d5b635020ef4552cffa45dd4f
[INFO] testing bentwire/stm32f072-usb-test against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbentwire%2Fstm32f072-usb-test" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bentwire/stm32f072-usb-test on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/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-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/bentwire/digital-filter.git`
[INFO] [stderr]     Updating git repository `https://github.com/mvirkkunen/usbd-serial`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bfbf5a658bd69a42d01120869b27fc3c569faa133a5caf8543e283b32264066b
[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" "bfbf5a658bd69a42d01120869b27fc3c569faa133a5caf8543e283b32264066b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfbf5a658bd69a42d01120869b27fc3c569faa133a5caf8543e283b32264066b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfbf5a658bd69a42d01120869b27fc3c569faa133a5caf8543e283b32264066b", kill_on_drop: false }`
[INFO] [stdout] bfbf5a658bd69a42d01120869b27fc3c569faa133a5caf8543e283b32264066b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35a27edadc682b3e65afafb2d7cc9f1555d71ee19c65ca7d1cbb4a09447d624b
[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" "35a27edadc682b3e65afafb2d7cc9f1555d71ee19c65ca7d1cbb4a09447d624b", kill_on_drop: false }`
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling vcell v0.1.0
[INFO] [stderr]    Compiling cortex-m v0.6.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.8
[INFO] [stderr]    Compiling heapless v0.4.4
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nb v0.1.2
[INFO] [stderr]    Compiling stm32f0 v0.7.1
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]    Compiling aligned v0.2.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.3
[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 typenum v1.10.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling hash32 v0.1.0
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling generic-array v0.11.1
[INFO] [stderr]    Compiling quote v0.6.12
[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 status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.9.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/cortex-m-rt-cc31f8e399e4ba09/out" "-L" "/opt/rustwide/target/debug/build/stm32f0-137c6df6a624c26b/out" "-L" "/opt/rustwide/rustup-home/toolchains/ecabaf78506b7a4668d42dc20268c086b93f0fad/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libstm32_usbd-f761fbe4c165fb49.rlib" "/opt/rustwide/target/debug/deps/libcortex_m-4717d785cd293503.rlib" "/opt/rustwide/target/debug/deps/libaligned-0fc5a6942f0d3b41.rlib" "/opt/rustwide/target/debug/deps/libdigital_filter-1998fe803972c6b1.rlib" "/opt/rustwide/target/debug/deps/libheapless-799d49151ee1e5ac.rlib" "/opt/rustwide/target/debug/deps/libhash32-0a020516052ad63f.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-b7a89acde847f83f.rlib" "/opt/rustwide/target/debug/deps/libgeneric_array-42107de36d61b16b.rlib" "/opt/rustwide/target/debug/deps/libstm32f0xx_hal-3d1de9be29555eea.rlib" "/opt/rustwide/target/debug/deps/libcast-5b2dbde7fc6bdad8.rlib" "/opt/rustwide/target/debug/deps/libembedded_hal-e7a0d5ebbb7d8c71.rlib" "/opt/rustwide/target/debug/deps/libvoid-9068ec32ed437f13.rlib" "/opt/rustwide/target/debug/deps/libnb-b3bc912a7bbf8a39.rlib" "/opt/rustwide/target/debug/deps/libusbd_serial-9a4492bec9a9fc27.rlib" "/opt/rustwide/target/debug/deps/libusb_device-6c6cecdb8e9900d1.rlib" "/opt/rustwide/target/debug/deps/libstm32f0-024f67421a803a89.rlib" "/opt/rustwide/target/debug/deps/libcortex_m_rt-db25af17def22a68.rlib" "/opt/rustwide/target/debug/deps/libr0-280de46ad07f7ebb.rlib" "-Wl,--start-group" "/opt/rustwide/target/debug/deps/libpanic_semihosting-915fed5fb24a4a34.rlib" "/opt/rustwide/target/debug/deps/libcortex_m_semihosting-c58ca4422ac67f35.rlib" "/opt/rustwide/target/debug/deps/libcortex_m-01bcd1733b0b9181.rlib" "/opt/rustwide/target/debug/deps/libvolatile_register-6b9f038c1a06a5f1.rlib" "/opt/rustwide/target/debug/deps/libvcell-8524c0b3de2ec9a8.rlib" "/opt/rustwide/target/debug/deps/libbare_metal-abc4bd6583fe998b.rlib" "/opt/rustwide/target/debug/deps/libaligned-f274dac5da6c47b4.rlib" "/opt/rustwide/target/debug/deps/libas_slice-9fe270f69743ee7d.rlib" "/opt/rustwide/target/debug/deps/libstable_deref_trait-c2c8c3cb81d22967.rlib" "/opt/rustwide/target/debug/deps/libgeneric_array-9678a8c204ec06fc.rlib" "/opt/rustwide/target/debug/deps/libtypenum-3753b225230e2e34.rlib" "/opt/rustwide/rustup-home/toolchains/ecabaf78506b7a4668d42dc20268c086b93f0fad/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-52d5241975807511.rlib" "/opt/rustwide/rustup-home/toolchains/ecabaf78506b7a4668d42dc20268c086b93f0fad/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9924c22ae1efcf66.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/ecabaf78506b7a4668d42dc20268c086b93f0fad/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-d1241f7bd234a268.rlib" "-Wl,-Bdynamic" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/ecabaf78506b7a4668d42dc20268c086b93f0fad/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[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-d57478317794d988.stm32f072_usb_test.03f8c333-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: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-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.1.rcgu.o: in function `core::mem::maybe_uninit::MaybeUninit<T>::assume_init':
[INFO] [stdout]           /rustc/ecabaf78506b7a4668d42dc20268c086b93f0fad/library/core/src/mem/maybe_uninit.rs:600: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.1.rcgu.o: in function `core::mem::manually_drop::ManuallyDrop<T>::into_inner':
[INFO] [stdout]           /rustc/ecabaf78506b7a4668d42dc20268c086b93f0fad/library/core/src/mem/manually_drop.rs:88: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.1.rcgu.o: in function `stm32_usbd::bus::UsbBus<PINS>::new':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stm32-usbd-0.2.1/src/bus.rs:38: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/stm32f072_usb_test-d57478317794d988.stm32f072_usb_test.03f8c333-cgu.1.rcgu.o:/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stm32-usbd-0.2.1/src/bus.rs:27: more undefined references to `memcpy' follow
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libcortex_m_semihosting-c58ca4422ac67f35.rlib(cortex_m_semihosting-c58ca4422ac67f35.cortex_m_semihosting.3b2358a8-cgu.5.rcgu.o): in function `core::fmt::Write::write_char':
[INFO] [stdout]           /rustc/ecabaf78506b7a4668d42dc20268c086b93f0fad/library/core/src/fmt/mod.rs:164: undefined reference to `memset'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libcortex_m_semihosting-c58ca4422ac67f35.rlib(cortex_m_semihosting-c58ca4422ac67f35.cortex_m_semihosting.3b2358a8-cgu.5.rcgu.o): in function `core::fmt::Write::write_fmt':
[INFO] [stdout]           /rustc/ecabaf78506b7a4668d42dc20268c086b93f0fad/library/core/src/fmt/mod.rs:187: undefined reference to `memcpy'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libcortex_m_semihosting-c58ca4422ac67f35.rlib(cortex_m_semihosting-c58ca4422ac67f35.cortex_m_semihosting.3b2358a8-cgu.5.rcgu.o): in function `<&mut W as core::fmt::Write>::write_fmt':
[INFO] [stdout]           /rustc/ecabaf78506b7a4668d42dc20268c086b93f0fad/library/core/src/fmt/mod.rs:202: undefined reference to `memcpy'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout]   = help: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
[INFO] [stdout]   = note: use the `-l` flag to specify native libraries to link
[INFO] [stdout]   = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
[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" "35a27edadc682b3e65afafb2d7cc9f1555d71ee19c65ca7d1cbb4a09447d624b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35a27edadc682b3e65afafb2d7cc9f1555d71ee19c65ca7d1cbb4a09447d624b", kill_on_drop: false }`
[INFO] [stdout] 35a27edadc682b3e65afafb2d7cc9f1555d71ee19c65ca7d1cbb4a09447d624b