[INFO] cloning repository https://github.com/dekokun/deko_os_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dekokun/deko_os_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekokun%2Fdeko_os_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekokun%2Fdeko_os_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b195468563426311c0dcfbe345efe8ca8c6d528f
[INFO] testing dekokun/deko_os_rust against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekokun%2Fdeko_os_rust" "/workspace/builds/worker-16/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-16/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dekokun/deko_os_rust on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-16/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/dekokun/deko_os_rust
[INFO] finished tweaking git repo https://github.com/dekokun/deko_os_rust
[INFO] tweaked toml for git repo https://github.com/dekokun/deko_os_rust written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate git repo https://github.com/dekokun/deko_os_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded os_bootinfo v0.2.1
[INFO] [stderr]   Downloaded array-init v0.0.3
[INFO] [stderr]   Downloaded volatile v0.2.4
[INFO] [stderr]   Downloaded ux v0.1.2
[INFO] [stderr]   Downloaded bootloader_precompiled v0.2.0
[INFO] [stderr]   Downloaded spin v0.4.9
[INFO] [stderr]   Downloaded x86_64 v0.2.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbc1013965150d9b6938c809e2eac4681585ada5dd396a12291423915ec75279
[INFO] running `Command { std: "docker" "start" "-a" "fbc1013965150d9b6938c809e2eac4681585ada5dd396a12291423915ec75279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbc1013965150d9b6938c809e2eac4681585ada5dd396a12291423915ec75279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbc1013965150d9b6938c809e2eac4681585ada5dd396a12291423915ec75279", kill_on_drop: false }`
[INFO] [stdout] fbc1013965150d9b6938c809e2eac4681585ada5dd396a12291423915ec75279
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bace06315da07d62c8b59e93a98f82bbfa8904ce2e48529ae22c98b53668719d
[INFO] running `Command { std: "docker" "start" "-a" "bace06315da07d62c8b59e93a98f82bbfa8904ce2e48529ae22c98b53668719d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling os_bootinfo v0.2.1
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling ux v0.1.2
[INFO] [stderr]    Compiling usize_conversions v0.2.0
[INFO] [stderr]    Compiling bit_field v0.9.0
[INFO] [stderr]    Compiling spin v0.4.9
[INFO] [stderr]    Compiling volatile v0.2.4
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.9/src/lib.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "const_fn", feature(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] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spin` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "bace06315da07d62c8b59e93a98f82bbfa8904ce2e48529ae22c98b53668719d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bace06315da07d62c8b59e93a98f82bbfa8904ce2e48529ae22c98b53668719d", kill_on_drop: false }`
[INFO] [stdout] bace06315da07d62c8b59e93a98f82bbfa8904ce2e48529ae22c98b53668719d