[INFO] updating cached repository https://github.com/Verneri/keybos
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f6a500cb3746cb15334c098a77c201d6db36a5e6
[INFO] checking Verneri/keybos against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVerneri%2Fkeybos" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Verneri/keybos on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Verneri/keybos
[INFO] finished tweaking git repo https://github.com/Verneri/keybos
[INFO] tweaked toml for git repo https://github.com/Verneri/keybos written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Verneri/keybos already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e16655fa8570c2e4436d6a9b40919fc40d153e17fc240907083534fb9220c82f
[INFO] running `"docker" "start" "-a" "e16655fa8570c2e4436d6a9b40919fc40d153e17fc240907083534fb9220c82f"`
[INFO] [stderr]     Checking panic-abort v0.3.1
[INFO] [stderr]     Checking keybos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0658]: use of unstable library feature 'format_args_nl': `format_args_nl` is only for internal language use and is subject to change
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     format_args_nl!("ldskld")
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(format_args_nl)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/gpio.rs:141:45
[INFO] [stderr]     |
[INFO] [stderr] 141 |         GPIORegisters::_fnsetter(alt as u8, (p as u8 % 10), register)
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `delay`
[INFO] [stderr]  --> src/aux.rs:1:34
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::registers::{Register, delay};
[INFO] [stderr]   |                                  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: language item required, but not found: `eh_personality`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | /     loop {
[INFO] [stderr] 36 | |         let b = uart.recv();
[INFO] [stderr] 37 | |         uart.send(b);
[INFO] [stderr] 38 | |     }
[INFO] [stderr]    | |_____- any code following this expression is unreachable
[INFO] [stderr] 39 |       format_args_nl!("ldskld")
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub extern "C" fn  kernel_main() -> ! {
[INFO] [stderr]    |                                     - expected `!` because of return type
[INFO] [stderr] ...
[INFO] [stderr] 39 |     format_args_nl!("ldskld")
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ expected `!`, found struct `core::fmt::Arguments`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `!`
[INFO] [stderr]             found struct `core::fmt::Arguments<'_>`
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `keybos`.
[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] [stderr] error[E0658]: use of unstable library feature 'format_args_nl': `format_args_nl` is only for internal language use and is subject to change
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     format_args_nl!("ldskld")
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: add `#![feature(format_args_nl)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/gpio.rs:141:45
[INFO] [stderr]     |
[INFO] [stderr] 141 |         GPIORegisters::_fnsetter(alt as u8, (p as u8 % 10), register)
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `delay`
[INFO] [stderr]  --> src/aux.rs:1:34
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::registers::{Register, delay};
[INFO] [stderr]   |                                  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 35 | /     loop {
[INFO] [stderr] 36 | |         let b = uart.recv();
[INFO] [stderr] 37 | |         uart.send(b);
[INFO] [stderr] 38 | |     }
[INFO] [stderr]    | |_____- any code following this expression is unreachable
[INFO] [stderr] 39 |       format_args_nl!("ldskld")
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub extern "C" fn  kernel_main() -> ! {
[INFO] [stderr]    |                                     - expected `!` because of return type
[INFO] [stderr] ...
[INFO] [stderr] 39 |     format_args_nl!("ldskld")
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ expected `!`, found struct `std::fmt::Arguments`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `!`
[INFO] [stderr]             found struct `std::fmt::Arguments<'_>`
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `uninitialized` found for union `std::mem::MaybeUninit<gpio::GPIORegisters>` in the current scope
[INFO] [stderr]    --> src/gpio.rs:195:67
[INFO] [stderr]     |
[INFO] [stderr] 195 |         let mut uninit = core::mem::MaybeUninit::<GPIORegisters>::uninitialized();
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^^^ function or associated item not found in `std::mem::MaybeUninit<gpio::GPIORegisters>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `keybos`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e16655fa8570c2e4436d6a9b40919fc40d153e17fc240907083534fb9220c82f"`
[INFO] running `"docker" "rm" "-f" "e16655fa8570c2e4436d6a9b40919fc40d153e17fc240907083534fb9220c82f"`
[INFO] [stdout] e16655fa8570c2e4436d6a9b40919fc40d153e17fc240907083534fb9220c82f
