[INFO] updating cached repository https://github.com/exp-3/ruspberry_os
[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] f48e6b248d166976b1c345c3ba327d485f2b077f
[INFO] testing exp-3/ruspberry_os against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexp-3%2Fruspberry_os" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/exp-3/ruspberry_os on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/exp-3/ruspberry_os
[INFO] finished tweaking git repo https://github.com/exp-3/ruspberry_os
[INFO] tweaked toml for git repo https://github.com/exp-3/ruspberry_os written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/exp-3/ruspberry_os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.45.2" "metadata" "--no-deps" "--format-version=1", 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] ef2370c893bcb718b9c730a74000b7f06ad225195a76d37d41598ffe95c08967
[INFO] running `Command { std: "docker" "start" "-a" "ef2370c893bcb718b9c730a74000b7f06ad225195a76d37d41598ffe95c08967", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef2370c893bcb718b9c730a74000b7f06ad225195a76d37d41598ffe95c08967", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef2370c893bcb718b9c730a74000b7f06ad225195a76d37d41598ffe95c08967", kill_on_drop: false }`
[INFO] [stdout] ef2370c893bcb718b9c730a74000b7f06ad225195a76d37d41598ffe95c08967
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72ab5b1a70b101706bb7afcb275b8d7c3a8c959944db2c1fcf6949785476762a
[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" "72ab5b1a70b101706bb7afcb275b8d7c3a8c959944db2c1fcf6949785476762a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruspberry_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm, core_intrinsics, lang_items)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/periph_driver/timer.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     (chi << 32 | clo)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `ruspberry_os`
[INFO] [stdout]   --> src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / #![feature(asm, core_intrinsics, lang_items)]
[INFO] [stdout] 2  | | #![no_std]
[INFO] [stdout] 3  | |
[INFO] [stdout] 4  | | #![crate_type="staticlib"]
[INFO] [stdout] ...  |
[INFO] [stdout] 20 | | #[no_mangle]
[INFO] [stdout] 21 | | pub unsafe fn __aeabi_unwind_cpp_pr0() {loop{}}
[INFO] [stdout]    | |_______________________________________________^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stdout]  --> src/runtime.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[lang="panic_fmt"]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0522, E0554, E0601.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0522`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruspberry_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "72ab5b1a70b101706bb7afcb275b8d7c3a8c959944db2c1fcf6949785476762a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72ab5b1a70b101706bb7afcb275b8d7c3a8c959944db2c1fcf6949785476762a", kill_on_drop: false }`
[INFO] [stdout] 72ab5b1a70b101706bb7afcb275b8d7c3a8c959944db2c1fcf6949785476762a