[INFO] fetching crate bootloader-x86_64-bios-stage-4 0.11.4...
[INFO] checking bootloader-x86_64-bios-stage-4-0.11.4 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate bootloader-x86_64-bios-stage-4 0.11.4 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate bootloader-x86_64-bios-stage-4 0.11.4 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bootloader-x86_64-bios-stage-4 0.11.4
[INFO] finished tweaking crates.io crate bootloader-x86_64-bios-stage-4 0.11.4
[INFO] tweaked toml for crates.io crate bootloader-x86_64-bios-stage-4 0.11.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate bootloader-x86_64-bios-stage-4 0.11.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded heapless v0.7.16
[INFO] [stderr]   Downloaded usize_conversions v0.2.0
[INFO] [stderr]   Downloaded bootloader-boot-config v0.11.4
[INFO] [stderr]   Downloaded bootloader-x86_64-bios-common v0.11.4
[INFO] [stderr]   Downloaded uart_16550 v0.2.18
[INFO] [stderr]   Downloaded zero v0.1.3
[INFO] [stderr]   Downloaded rsdp v2.0.0
[INFO] [stderr]   Downloaded critical-section v1.1.1
[INFO] [stderr]   Downloaded conquer-util v0.3.0
[INFO] [stderr]   Downloaded conquer-once v0.3.2
[INFO] [stderr]   Downloaded spinning_top v0.2.5
[INFO] [stderr]   Downloaded xmas-elf v0.8.0
[INFO] [stderr]   Downloaded bootloader-x86_64-common v0.11.4
[INFO] [stderr]   Downloaded bootloader_api v0.11.4
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.11
[INFO] [stderr]   Downloaded serde-json-core v0.5.0
[INFO] [stderr]   Downloaded rustversion v1.0.13
[INFO] [stderr]   Downloaded noto-sans-mono-bitmap v0.2.0
[INFO] [stderr]   Downloaded volatile v0.4.6
[INFO] [stderr]   Downloaded x86_64 v0.14.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56ca4990165eb4eca8c10d012acab339fecafee0ffe6a67f3fde53f2526d7da1
[INFO] running `Command { std: "docker" "start" "-a" "56ca4990165eb4eca8c10d012acab339fecafee0ffe6a67f3fde53f2526d7da1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56ca4990165eb4eca8c10d012acab339fecafee0ffe6a67f3fde53f2526d7da1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56ca4990165eb4eca8c10d012acab339fecafee0ffe6a67f3fde53f2526d7da1", kill_on_drop: false }`
[INFO] [stdout] 56ca4990165eb4eca8c10d012acab339fecafee0ffe6a67f3fde53f2526d7da1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9421292abd8f1e8e526d8a8ea8126025807987c65b59015d4cf8d12e694b5c8b
[INFO] running `Command { std: "docker" "start" "-a" "9421292abd8f1e8e526d8a8ea8126025807987c65b59015d4cf8d12e694b5c8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling serde v1.0.166
[INFO] [stderr]    Compiling rustversion v1.0.13
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking volatile v0.4.6
[INFO] [stderr]    Compiling bootloader_api v0.11.4
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking conquer-util v0.3.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking zero v0.1.3
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking xmas-elf v0.8.0
[INFO] [stderr]     Checking conquer-once v0.3.2
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking spinning_top v0.2.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_hc v0.3.2
[INFO] [stderr]    Compiling bootloader-x86_64-bios-stage-4 v0.11.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking noto-sans-mono-bitmap v0.2.0
[INFO] [stderr]     Checking usize_conversions v0.2.0
[INFO] [stderr]     Checking ryu v1.0.14
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]     Checking rsdp v2.0.0
[INFO] [stderr]     Checking bootloader-x86_64-bios-common v0.11.4
[INFO] [stderr]    Compiling syn v2.0.23
[INFO] [stderr]     Checking x86_64 v0.14.10
[INFO] [stderr]     Checking uart_16550 v0.2.18
[INFO] [stderr]    Compiling serde_derive v1.0.166
[INFO] [stderr]     Checking bootloader-boot-config v0.11.4
[INFO] [stderr]     Checking serde-json-core v0.5.0
[INFO] [stderr]     Checking bootloader-x86_64-common v0.11.4
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bootloader-x86_64-bios-stage-4` (bin "bootloader-x86_64-bios-stage-4") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "9421292abd8f1e8e526d8a8ea8126025807987c65b59015d4cf8d12e694b5c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9421292abd8f1e8e526d8a8ea8126025807987c65b59015d4cf8d12e694b5c8b", kill_on_drop: false }`
[INFO] [stdout] 9421292abd8f1e8e526d8a8ea8126025807987c65b59015d4cf8d12e694b5c8b
