[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] checking bentwire/stm32f072-usb-test against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbentwire%2Fstm32f072-usb-test" "/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/bentwire/stm32f072-usb-test on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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/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-13/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded panic-halt v0.2.0
[INFO] [stderr]   Downloaded panic-semihosting v0.5.2
[INFO] [stderr]   Downloaded aligned v0.3.1
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.3
[INFO] [stderr]   Downloaded cortex-m-rtfm v0.4.3
[INFO] [stderr]   Downloaded cortex-m v0.5.10
[INFO] [stderr]   Downloaded cortex-m-rtfm-macros v0.4.3
[INFO] [stderr]   Downloaded syn v0.15.35
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.8
[INFO] [stderr]   Downloaded cortex-m v0.6.0
[INFO] [stderr]   Downloaded embedded-hal v0.2.3
[INFO] [stderr]   Downloaded as-slice v0.1.0
[INFO] [stderr]   Downloaded stm32f0xx-hal v0.14.1
[INFO] [stderr]   Downloaded heapless v0.4.4
[INFO] [stderr]   Downloaded stm32-usbd v0.2.1
[INFO] [stderr]   Downloaded usb-device v0.2.1
[INFO] [stderr]   Downloaded stm32f0 v0.7.1
[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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acdd7fd78a5f94788a3c5eb582ff20e6d53e5183d38d4bedcc6dea7934efd372
[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" "acdd7fd78a5f94788a3c5eb582ff20e6d53e5183d38d4bedcc6dea7934efd372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acdd7fd78a5f94788a3c5eb582ff20e6d53e5183d38d4bedcc6dea7934efd372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acdd7fd78a5f94788a3c5eb582ff20e6d53e5183d38d4bedcc6dea7934efd372", kill_on_drop: false }`
[INFO] [stdout] acdd7fd78a5f94788a3c5eb582ff20e6d53e5183d38d4bedcc6dea7934efd372
[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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 664bc9041150059aa6baf44fce52498855d379de2a008866545c485e9bc2f0da
[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" "664bc9041150059aa6baf44fce52498855d379de2a008866545c485e9bc2f0da", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling cortex-m-rt v0.6.8
[INFO] [stderr]    Compiling heapless v0.4.4
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]    Compiling stm32f0 v0.7.1
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.3
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nb v0.1.2
[INFO] [stderr]    Compiling cortex-m-rtfm v0.4.3
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking usb-device v0.2.1
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]     Checking typenum v1.10.0
[INFO] [stderr]     Checking embedded-hal v0.2.3
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]     Checking as-slice v0.1.0
[INFO] [stderr]     Checking generic-array v0.12.0
[INFO] [stderr]     Checking generic-array v0.11.1
[INFO] [stderr]     Checking hash32 v0.1.0
[INFO] [stderr]     Checking aligned v0.3.1
[INFO] [stderr]     Checking cortex-m v0.6.0
[INFO] [stderr]     Checking cortex-m v0.5.10
[INFO] [stderr]     Checking panic-semihosting v0.5.2
[INFO] [stderr]     Checking usbd-serial v0.1.0 (https://github.com/mvirkkunen/usbd-serial#cb18cef7)
[INFO] [stderr]     Checking 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]     Checking owned-singleton v0.1.0
[INFO] [stderr]     Checking stm32f0xx-hal v0.14.1
[INFO] [stderr]     Checking stm32-usbd v0.2.1
[INFO] [stderr]     Checking 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: duplicate lang item in crate `std` (which `test` depends on): `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_semihosting` (which `stm32f072_usb_test` depends on)
[INFO] [stdout]   = note: first definition in `panic_semihosting` loaded from /opt/rustwide/target/debug/deps/libpanic_semihosting-272222acf97197c9.rmeta
[INFO] [stdout]   = note: second definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/f47dd4da3ae8c32c9e65d307bfe640b143e674df/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-edfba68bd3501617.rlib
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[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] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "664bc9041150059aa6baf44fce52498855d379de2a008866545c485e9bc2f0da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "664bc9041150059aa6baf44fce52498855d379de2a008866545c485e9bc2f0da", kill_on_drop: false }`
[INFO] [stdout] 664bc9041150059aa6baf44fce52498855d379de2a008866545c485e9bc2f0da