[INFO] cloning repository https://github.com/Ferryistaken/operating_system
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ferryistaken/operating_system" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFerryistaken%2Foperating_system", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFerryistaken%2Foperating_system'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cad5ad9ecf62e0f468e3beef34ba04baa2e34167
[INFO] checking Ferryistaken/operating_system against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFerryistaken%2Foperating_system" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ferryistaken/operating_system on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-9/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Ferryistaken/operating_system
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/Ferryistaken/operating_system
[INFO] tweaked toml for git repo https://github.com/Ferryistaken/operating_system written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Ferryistaken/operating_system already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a831a0c6b406067ecf11519e170d05fb43e77355c3ea0f5dc7fb5a847874211b
[INFO] running `Command { std: "docker" "start" "-a" "a831a0c6b406067ecf11519e170d05fb43e77355c3ea0f5dc7fb5a847874211b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a831a0c6b406067ecf11519e170d05fb43e77355c3ea0f5dc7fb5a847874211b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a831a0c6b406067ecf11519e170d05fb43e77355c3ea0f5dc7fb5a847874211b", kill_on_drop: false }`
[INFO] [stdout] a831a0c6b406067ecf11519e170d05fb43e77355c3ea0f5dc7fb5a847874211b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67ae8483a98cb174a4efa9189b76a2503720d944676febe23a463c23e30780a8
[INFO] running `Command { std: "docker" "start" "-a" "67ae8483a98cb174a4efa9189b76a2503720d944676febe23a463c23e30780a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86_64 v0.13.6
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]    Compiling bootloader v0.9.16
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/x86_64-0.13.6/src/lib.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature = "const_fn", feature(const_fn))] // Needed for generic access to associated consts
[INFO] [stdout]   |                                           ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `x86_64`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "67ae8483a98cb174a4efa9189b76a2503720d944676febe23a463c23e30780a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67ae8483a98cb174a4efa9189b76a2503720d944676febe23a463c23e30780a8", kill_on_drop: false }`
[INFO] [stdout] 67ae8483a98cb174a4efa9189b76a2503720d944676febe23a463c23e30780a8