[INFO] fetching crate redoxfs 0.4.4...
[INFO] testing redoxfs-0.4.4 against 1.59.0 for beta-1.60-1
[INFO] extracting crate redoxfs 0.4.4 into /workspace/builds/worker-17/source
[INFO] validating manifest of crates.io crate redoxfs 0.4.4 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate redoxfs 0.4.4
[INFO] finished tweaking crates.io crate redoxfs 0.4.4
[INFO] tweaked toml for crates.io crate redoxfs 0.4.4 written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate crates.io crate redoxfs 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a82ef357bbbdd5763e50f7d7cfe1f73b21c8f4195cdd405b1d8a0156de29939
[INFO] running `Command { std: "docker" "start" "-a" "7a82ef357bbbdd5763e50f7d7cfe1f73b21c8f4195cdd405b1d8a0156de29939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a82ef357bbbdd5763e50f7d7cfe1f73b21c8f4195cdd405b1d8a0156de29939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a82ef357bbbdd5763e50f7d7cfe1f73b21c8f4195cdd405b1d8a0156de29939", kill_on_drop: false }`
[INFO] [stdout] 7a82ef357bbbdd5763e50f7d7cfe1f73b21c8f4195cdd405b1d8a0156de29939
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7969afc54f5dce0df040086b8a1eb8b93387a375228d37e7dfafa8ba04cc2c1
[INFO] running `Command { std: "docker" "start" "-a" "c7969afc54f5dce0df040086b8a1eb8b93387a375228d37e7dfafa8ba04cc2c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling thread-scoped v1.0.2
[INFO] [stderr]    Compiling fuse v0.3.1
[INFO] [stderr]    Compiling redox_syscall v0.2.9
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/redox_syscall-0.2.9/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm)]
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/redox_syscall-0.2.9/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(llvm_asm)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `redox_syscall` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c7969afc54f5dce0df040086b8a1eb8b93387a375228d37e7dfafa8ba04cc2c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7969afc54f5dce0df040086b8a1eb8b93387a375228d37e7dfafa8ba04cc2c1", kill_on_drop: false }`
[INFO] [stdout] c7969afc54f5dce0df040086b8a1eb8b93387a375228d37e7dfafa8ba04cc2c1