[INFO] cloning repository https://github.com/viktorfrom/e7030e-embedded-system-design
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/viktorfrom/e7030e-embedded-system-design" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviktorfrom%2Fe7030e-embedded-system-design", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviktorfrom%2Fe7030e-embedded-system-design'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72339372c44f08d44f52aa7a39b51b36b4479336
[INFO] building viktorfrom/e7030e-embedded-system-design against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviktorfrom%2Fe7030e-embedded-system-design" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/viktorfrom/e7030e-embedded-system-design on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-11/source/.cargo/config
[INFO] started tweaking git repo https://github.com/viktorfrom/e7030e-embedded-system-design
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/viktorfrom/e7030e-embedded-system-design
[INFO] tweaked toml for git repo https://github.com/viktorfrom/e7030e-embedded-system-design written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/viktorfrom/e7030e-embedded-system-design already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 079d37f42755944fb6bfde00c82fe8b76f190b47e2c90b9c488df6dbb4b0ecc8
[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" "079d37f42755944fb6bfde00c82fe8b76f190b47e2c90b9c488df6dbb4b0ecc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "079d37f42755944fb6bfde00c82fe8b76f190b47e2c90b9c488df6dbb4b0ecc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "079d37f42755944fb6bfde00c82fe8b76f190b47e2c90b9c488df6dbb4b0ecc8", kill_on_drop: false }`
[INFO] [stdout] 079d37f42755944fb6bfde00c82fe8b76f190b47e2c90b9c488df6dbb4b0ecc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--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] 48b8e5b4f99e5dd11f9698cf3df524c03d892c4f09ed9f41e566e110e9865552
[INFO] running `Command { std: "docker" "start" "-a" "48b8e5b4f99e5dd11f9698cf3df524c03d892c4f09ed9f41e566e110e9865552", kill_on_drop: false }`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "48b8e5b4f99e5dd11f9698cf3df524c03d892c4f09ed9f41e566e110e9865552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48b8e5b4f99e5dd11f9698cf3df524c03d892c4f09ed9f41e566e110e9865552", kill_on_drop: false }`
[INFO] [stdout] 48b8e5b4f99e5dd11f9698cf3df524c03d892c4f09ed9f41e566e110e9865552
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8024ef2e4f80488d9fc623c02ce2dc5e264c7d49380ba61a2fb4804cd60e764
[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" "d8024ef2e4f80488d9fc623c02ce2dc5e264c7d49380ba61a2fb4804cd60e764", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling cortex-m v0.6.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling vcell v0.1.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.12
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling heapless v0.5.3
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling stm32l0 v0.9.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nb v0.1.2
[INFO] [stderr]    Compiling stm32l0xx-hal v0.5.0
[INFO] [stderr]    Compiling ssd1306 v0.3.0-alpha.4
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]    Compiling cortex-m-rtfm v0.5.1
[INFO] [stderr]    Compiling postcard-cobs v0.1.5-pre
[INFO] [stderr]    Compiling rtfm-core v0.3.0
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling cobs v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling as-slice v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling aligned v0.3.2
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling embedded-graphics v0.6.0-alpha.3
[INFO] [stderr]    Compiling panic-semihosting v0.5.3
[INFO] [stderr]    Compiling tinybmp v0.2.2
[INFO] [stderr]    Compiling rtfm-syntax v0.4.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling ufmt-macros v0.1.1
[INFO] [stderr]    Compiling ufmt v0.1.0
[INFO] [stderr]    Compiling cortex-m-rtfm-macros v0.5.0
[INFO] [stderr]    Compiling postcard v0.4.3
[INFO] [stderr]    Compiling e7020e-embedded-system-design v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Mode`, `Phase`, `Polarity`, `exti::TriggerEdge`, `pac`, `timer::Timer`
[INFO] [stdout]   --> examples/oled2.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     exti::TriggerEdge,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     gpio::*,
[INFO] [stdout] 15 |     pac,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     spi::{self, Mode, NoMiso, Phase, Polarity},
[INFO] [stdout]    |                 ^^^^          ^^^^^  ^^^^^^^^
[INFO] [stdout] 19 |     syscfg,
[INFO] [stdout] 20 |     timer::Timer,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PrimitiveStyle`
[INFO] [stdout]   --> examples/oled2.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     style::{PrimitiveStyle, PrimitiveStyleBuilder, TextStyle},
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::*`
[INFO] [stdout]  --> examples/oled.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ssd1306::{mode::TerminalMode, prelude::*, Builder};
[INFO] [stdout]   |                                   ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Mode`, `Phase`, `Polarity`, `exti::TriggerEdge`, `pac`, `timer::Timer`
[INFO] [stdout]   --> examples/oled.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     exti::TriggerEdge,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     gpio::*,
[INFO] [stdout] 14 |     pac,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     spi::{self, Mode, NoMiso, Phase, Polarity},
[INFO] [stdout]    |                 ^^^^          ^^^^^  ^^^^^^^^
[INFO] [stdout] 18 |     syscfg,
[INFO] [stdout] 19 |     timer::Timer,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DWT`, `Peripherals`, `syst`
[INFO] [stdout]  --> examples/buzzer.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | use cortex_m::peripheral::{syst, Peripherals, DWT};
[INFO] [stdout]   |                            ^^^^  ^^^^^^^^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cortex_m_semihosting::hprintln`
[INFO] [stdout]  --> examples/buzzer.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use cortex_m_semihosting::hprintln;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stm32l0xx_hal as hal`
[INFO] [stdout]  --> examples/buzzer.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use stm32l0xx_hal as hal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `adc`, `spi`, `stm32`
[INFO] [stdout]   --> examples/buzzer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     adc, exti::TriggerEdge, gpio::*, pac, prelude::*, rcc, rcc::Config, spi, stm32, syscfg, timer,
[INFO] [stdout]    |     ^^^                                                                 ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `e7020e-embedded-system-design`
[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] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `longfi_device`
[INFO] [stdout]  --> examples/longfi_bindings.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use longfi_device::{AntPinsMode, Spi};
[INFO] [stdout]   |     ^^^^^^^^^^^^^ use of undeclared crate or module `longfi_device`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DWT`, `Peripherals`, `syst`
[INFO] [stdout]  --> examples/breathalyzer.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cortex_m::peripheral::{syst, Peripherals, DWT};
[INFO] [stdout]   |                            ^^^^  ^^^^^^^^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stm32l0xx_hal as hal`
[INFO] [stdout]  --> examples/breathalyzer.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use stm32l0xx_hal as hal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `spi`, `stm32`
[INFO] [stdout]   --> examples/breathalyzer.rs:11:68
[INFO] [stdout]    |
[INFO] [stdout] 11 |     adc, exti::TriggerEdge, gpio::*, pac, prelude::*, rcc::Config, spi, stm32, syscfg, timer,
[INFO] [stdout]    |                                                                    ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `PB5` in module `stm32l0xx_hal::gpio::gpioa`
[INFO] [stdout]    --> examples/longfi_bindings.rs:82:56
[INFO] [stdout]     |
[INFO] [stdout] 82  |   static mut EN_TCXO: Option<stm32l0xx_hal::gpio::gpioa::PB5<Output<PushPull>>> = None;
[INFO] [stdout]     |                                                          ^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stm32l0xx-hal-0.5.0/src/gpio.rs:461:1
[INFO] [stdout]     |
[INFO] [stdout] 461 | / gpio!(GPIOA, gpioa, iopaen, PA, [
[INFO] [stdout] 462 | |     PA0: (pa0, 0, Input<Floating>),
[INFO] [stdout] 463 | |     PA1: (pa1, 1, Input<Floating>),
[INFO] [stdout] 464 | |     PA2: (pa2, 2, Input<Floating>),
[INFO] [stdout] ...   |
[INFO] [stdout] 477 | |     PA15: (pa15, 15, Input<Floating>),
[INFO] [stdout] 478 | | ]);
[INFO] [stdout]     | |___- similarly named struct `PA5` defined here
[INFO] [stdout]     |
[INFO] [stdout] help: a struct with a similar name exists
[INFO] [stdout]     |
[INFO] [stdout] 82  | static mut EN_TCXO: Option<stm32l0xx_hal::gpio::gpioa::PA5<Output<PushPull>>> = None;
[INFO] [stdout]     |                                                        ^^^
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 1   | use crate::hal::serial::PB5;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use stm32l0xx_hal::serial::PB5;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `PB5` in module `stm32l0xx_hal::gpio::gpioa`
[INFO] [stdout]    --> examples/longfi_bindings.rs:83:55
[INFO] [stdout]     |
[INFO] [stdout] 83  |   pub fn set_tcxo_pins(pin: stm32l0xx_hal::gpio::gpioa::PB5<Output<PushPull>>) {
[INFO] [stdout]     |                                                         ^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stm32l0xx-hal-0.5.0/src/gpio.rs:461:1
[INFO] [stdout]     |
[INFO] [stdout] 461 | / gpio!(GPIOA, gpioa, iopaen, PA, [
[INFO] [stdout] 462 | |     PA0: (pa0, 0, Input<Floating>),
[INFO] [stdout] 463 | |     PA1: (pa1, 1, Input<Floating>),
[INFO] [stdout] 464 | |     PA2: (pa2, 2, Input<Floating>),
[INFO] [stdout] ...   |
[INFO] [stdout] 477 | |     PA15: (pa15, 15, Input<Floating>),
[INFO] [stdout] 478 | | ]);
[INFO] [stdout]     | |___- similarly named struct `PA5` defined here
[INFO] [stdout]     |
[INFO] [stdout] help: a struct with a similar name exists
[INFO] [stdout]     |
[INFO] [stdout] 83  | pub fn set_tcxo_pins(pin: stm32l0xx_hal::gpio::gpioa::PA5<Output<PushPull>>) {
[INFO] [stdout]     |                                                       ^^^
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 1   | use crate::hal::serial::PB5;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use stm32l0xx_hal::serial::PB5;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `longfi_bindings`
[INFO] [stdout]    --> examples/longfi_bindings.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / use embedded_hal::digital::v2::OutputPin;
[INFO] [stdout] 2   | | use embedded_hal::spi::FullDuplex;
[INFO] [stdout] 3   | | use longfi_device::{AntPinsMode, Spi};
[INFO] [stdout] 4   | | use nb::block;
[INFO] [stdout] ...   |
[INFO] [stdout] 178 | |     0x1
[INFO] [stdout] 179 | | }
[INFO] [stdout]     | |_^ consider adding a `main` function to `examples/longfi_bindings.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: duplicate lang item in crate `panic_semihosting`: `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `std` (which `longfi_bindings` depends on)
[INFO] [stdout]   = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-c6dddd3d354e6bea.so, /opt/rustwide/rustup-home/toolchains/ff34b919075f35a1787659e9c448a34b06bab8de/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-c6dddd3d354e6bea.rlib
[INFO] [stdout]   = note: second definition in `panic_semihosting` loaded from /opt/rustwide/target/debug/deps/libpanic_semihosting-95812e5e45b0fec9.rlib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0432, E0601.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d8024ef2e4f80488d9fc623c02ce2dc5e264c7d49380ba61a2fb4804cd60e764", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8024ef2e4f80488d9fc623c02ce2dc5e264c7d49380ba61a2fb4804cd60e764", kill_on_drop: false }`
[INFO] [stdout] d8024ef2e4f80488d9fc623c02ce2dc5e264c7d49380ba61a2fb4804cd60e764
