[INFO] fetching crate bootloader-x86_64-bios-stage-4 0.11.4...
[INFO] documenting bootloader-x86_64-bios-stage-4-0.11.4 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate bootloader-x86_64-bios-stage-4 0.11.4 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate bootloader-x86_64-bios-stage-4 0.11.4 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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-4-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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rsdp v2.0.0
[INFO] [stderr]   Downloaded bootloader-x86_64-common v0.11.4
[INFO] [stderr]   Downloaded bootloader_api v0.11.4
[INFO] [stderr]   Downloaded uart_16550 v0.2.18
[INFO] [stderr]   Downloaded bootloader-boot-config v0.11.4
[INFO] [stderr]   Downloaded rand_hc v0.3.2
[INFO] [stderr]   Downloaded unicode-ident v1.0.10
[INFO] [stderr]   Downloaded hash32 v0.2.1
[INFO] [stderr]   Downloaded xmas-elf v0.8.0
[INFO] [stderr]   Downloaded semver v1.0.17
[INFO] [stderr]   Downloaded heapless v0.7.16
[INFO] [stderr]   Downloaded serde v1.0.166
[INFO] [stderr]   Downloaded raw-cpuid v10.7.0
[INFO] [stderr]   Downloaded syn v2.0.23
[INFO] [stderr]   Downloaded spin v0.9.8
[INFO] [stderr]   Downloaded ryu v1.0.14
[INFO] [stderr]   Downloaded quote v1.0.29
[INFO] [stderr]   Downloaded proc-macro2 v1.0.63
[INFO] [stderr]   Downloaded serde-json-core v0.5.0
[INFO] [stderr]   Downloaded serde_derive v1.0.166
[INFO] [stderr]   Downloaded rustversion v1.0.13
[INFO] [stderr]   Downloaded bit_field v0.10.2
[INFO] [stderr]   Downloaded log v0.4.19
[INFO] [stderr]   Downloaded critical-section v1.1.1
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.11
[INFO] [stderr]   Downloaded bootloader-x86_64-bios-common v0.11.4
[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 x86_64 v0.14.10
[INFO] [stderr]   Downloaded zero v0.1.3
[INFO] [stderr]   Downloaded volatile v0.4.6
[INFO] [stderr]   Downloaded usize_conversions v0.2.0
[INFO] [stderr]   Downloaded noto-sans-mono-bitmap v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2cef30e3a22ca17bab2e78b21bf78155eb6833f62438c4ae3a1c8dd7bb65e67
[INFO] running `Command { std: "docker" "start" "-a" "b2cef30e3a22ca17bab2e78b21bf78155eb6833f62438c4ae3a1c8dd7bb65e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2cef30e3a22ca17bab2e78b21bf78155eb6833f62438c4ae3a1c8dd7bb65e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2cef30e3a22ca17bab2e78b21bf78155eb6833f62438c4ae3a1c8dd7bb65e67", kill_on_drop: false }`
[INFO] [stdout] b2cef30e3a22ca17bab2e78b21bf78155eb6833f62438c4ae3a1c8dd7bb65e67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0201615cc236c61bb271ad516c0119bbc782ad6ffce6897aa9936dbb9ec084bb
[INFO] running `Command { std: "docker" "start" "-a" "0201615cc236c61bb271ad516c0119bbc782ad6ffce6897aa9936dbb9ec084bb", 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 autocfg v1.1.0
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rustversion v1.0.13
[INFO] [stderr]    Compiling serde v1.0.166
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking byteorder v1.4.3
[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 rand_core v0.6.4
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking conquer-util v0.3.0
[INFO] [stderr]     Checking zero v0.1.3
[INFO] [stderr]     Checking conquer-once v0.3.2
[INFO] [stderr]     Checking xmas-elf v0.8.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_hc v0.3.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking raw-cpuid v10.7.0
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking spinning_top v0.2.5
[INFO] [stderr]     Checking noto-sans-mono-bitmap v0.2.0
[INFO] [stderr]     Checking usize_conversions v0.2.0
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/usize_conversions-0.2.0/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(i128_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `i128_type` has been stable since `1.26.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `usize_conversions` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0201615cc236c61bb271ad516c0119bbc782ad6ffce6897aa9936dbb9ec084bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0201615cc236c61bb271ad516c0119bbc782ad6ffce6897aa9936dbb9ec084bb", kill_on_drop: false }`
[INFO] [stdout] 0201615cc236c61bb271ad516c0119bbc782ad6ffce6897aa9936dbb9ec084bb
