[INFO] cloning repository https://github.com/itsbth/Rust_OS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/itsbth/Rust_OS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitsbth%2FRust_OS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitsbth%2FRust_OS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6ead62aae994d4a6c2f453b7de7d79dd8fe2b73
[INFO] checking itsbth/Rust_OS against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitsbth%2FRust_OS" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/itsbth/Rust_OS on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/itsbth/Rust_OS
[INFO] finished tweaking git repo https://github.com/itsbth/Rust_OS
[INFO] tweaked toml for git repo https://github.com/itsbth/Rust_OS written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/itsbth/Rust_OS already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spin v0.3.4
[INFO] [stderr]   Downloaded rlibc v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e7c1f3b28da5e8735747ac2e3424ba4f08d08bbee2dfd3b93757d73e31ea706
[INFO] running `Command { std: "docker" "start" "-a" "5e7c1f3b28da5e8735747ac2e3424ba4f08d08bbee2dfd3b93757d73e31ea706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e7c1f3b28da5e8735747ac2e3424ba4f08d08bbee2dfd3b93757d73e31ea706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e7c1f3b28da5e8735747ac2e3424ba4f08d08bbee2dfd3b93757d73e31ea706", kill_on_drop: false }`
[INFO] [stdout] 5e7c1f3b28da5e8735747ac2e3424ba4f08d08bbee2dfd3b93757d73e31ea706
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9f32525250ac3101ef4a6af5940280f872bf9f42f70c69392b22539296418e2
[INFO] running `Command { std: "docker" "start" "-a" "c9f32525250ac3101ef4a6af5940280f872bf9f42f70c69392b22539296418e2", kill_on_drop: false }`
[INFO] [stderr]     Checking spin v0.3.4
[INFO] [stderr]     Checking rlibc v0.1.4
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.3.4/src/lib.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(no_std, const_fn)]
[INFO] [stdout]   |                    ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spin` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c9f32525250ac3101ef4a6af5940280f872bf9f42f70c69392b22539296418e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9f32525250ac3101ef4a6af5940280f872bf9f42f70c69392b22539296418e2", kill_on_drop: false }`
[INFO] [stdout] c9f32525250ac3101ef4a6af5940280f872bf9f42f70c69392b22539296418e2