[INFO] fetching crate redox_hwio 0.1.3...
[INFO] testing redox_hwio-0.1.3 against 1.54.0 for beta-1.55-1
[INFO] extracting crate redox_hwio 0.1.3 into /workspace/builds/worker-111/source
[INFO] validating manifest of crates.io crate redox_hwio 0.1.3 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate redox_hwio 0.1.3
[INFO] finished tweaking crates.io crate redox_hwio 0.1.3
[INFO] tweaked toml for crates.io crate redox_hwio 0.1.3 written to /workspace/builds/worker-111/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 402e5fb7a572d5da4716223d73783129534b9b56ee7cbde2b460d194e862a622
[INFO] running `Command { std: "docker" "start" "-a" "402e5fb7a572d5da4716223d73783129534b9b56ee7cbde2b460d194e862a622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "402e5fb7a572d5da4716223d73783129534b9b56ee7cbde2b460d194e862a622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "402e5fb7a572d5da4716223d73783129534b9b56ee7cbde2b460d194e862a622", kill_on_drop: false }`
[INFO] [stdout] 402e5fb7a572d5da4716223d73783129534b9b56ee7cbde2b460d194e862a622
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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" "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" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50bbb02059e1dbcd6af08dc87e1aefb0c3b29d08f38d10f501b5eb767f3554e8
[INFO] running `Command { std: "docker" "start" "-a" "50bbb02059e1dbcd6af08dc87e1aefb0c3b29d08f38d10f501b5eb767f3554e8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling redox_hwio v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:3:46
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(not(feature = "stable"), 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[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:93
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(all(not(feature = "stable"), any(target_arch = "x86", target_arch = "x86_64")), feature(llvm_asm))]
[INFO] [stdout]   |                                                                                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:38
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(not(feature = "stable"), feature(const_fn))]
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `redox_hwio`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "50bbb02059e1dbcd6af08dc87e1aefb0c3b29d08f38d10f501b5eb767f3554e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50bbb02059e1dbcd6af08dc87e1aefb0c3b29d08f38d10f501b5eb767f3554e8", kill_on_drop: false }`
[INFO] [stdout] 50bbb02059e1dbcd6af08dc87e1aefb0c3b29d08f38d10f501b5eb767f3554e8
