[INFO] fetching crate lovm2 0.4.8...
[INFO] testing lovm2-0.4.8 against 1.60.0 for beta-1.61-1
[INFO] extracting crate lovm2 0.4.8 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lovm2 0.4.8 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lovm2 0.4.8
[INFO] finished tweaking crates.io crate lovm2 0.4.8
[INFO] tweaked toml for crates.io crate lovm2 0.4.8 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate lovm2 0.4.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded adler v0.2.3
[INFO] [stderr]   Downloaded openssl-sys v0.9.60
[INFO] [stderr]   Downloaded unicode-normalization v0.1.16
[INFO] [stderr]   Downloaded openssl v0.10.32
[INFO] [stderr]   Downloaded idna v0.2.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.18
[INFO] [stderr]   Downloaded curl v0.4.34
[INFO] [stderr]   Downloaded openssl-probe v0.1.2
[INFO] [stderr]   Downloaded addr2line v0.14.1
[INFO] [stderr]   Downloaded object v0.22.0
[INFO] [stderr]   Downloaded backtrace v0.3.55
[INFO] [stderr]   Downloaded miniz_oxide v0.4.3
[INFO] [stderr]   Downloaded tinyvec v1.1.0
[INFO] [stderr]   Downloaded serde_derive v1.0.119
[INFO] [stderr]   Downloaded serde v1.0.119
[INFO] [stderr]   Downloaded url v2.2.0
[INFO] [stderr]   Downloaded lovm2_std v0.4.8
[INFO] [stderr]   Downloaded syn v1.0.58
[INFO] [stderr]   Downloaded gimli v0.23.0
[INFO] [stderr]   Downloaded dirs-sys v0.3.5
[INFO] [stderr]   Downloaded dirs v3.0.1
[INFO] [stderr]   Downloaded libz-sys v1.1.2
[INFO] [stderr]   Downloaded curl-sys v0.4.39+curl-7.74.0
[INFO] [stderr]   Downloaded libc v0.2.82
[INFO] [stderr]   Downloaded bincode v1.3.1
[INFO] [stderr]   Downloaded thread_local v1.1.0
[INFO] [stderr]   Downloaded chunked_transfer v1.3.0
[INFO] [stderr]   Downloaded log v0.4.13
[INFO] [stderr]   Downloaded vcpkg v0.2.11
[INFO] [stderr]   Downloaded form_urlencoded v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64f5c767c59ea054fddb7c6c2653aadfbe0d0e6521f02325b5d5973e960a3067
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "64f5c767c59ea054fddb7c6c2653aadfbe0d0e6521f02325b5d5973e960a3067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64f5c767c59ea054fddb7c6c2653aadfbe0d0e6521f02325b5d5973e960a3067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64f5c767c59ea054fddb7c6c2653aadfbe0d0e6521f02325b5d5973e960a3067", kill_on_drop: false }`
[INFO] [stdout] 64f5c767c59ea054fddb7c6c2653aadfbe0d0e6521f02325b5d5973e960a3067
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f1f5d1915c09d17cff1c6229e4566bdf49f51abd91da68523674d7fafe1b857
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4f1f5d1915c09d17cff1c6229e4566bdf49f51abd91da68523674d7fafe1b857", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]    Compiling object v0.22.0
[INFO] [stderr]    Compiling ascii v1.0.0
[INFO] [stderr]    Compiling chunked_transfer v1.3.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling curl-sys v0.4.39+curl-7.74.0
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling tiny_http v0.7.0
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]    Compiling lovm2_module v0.1.0
[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/lovm2_module-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lovm2_module` 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" "4f1f5d1915c09d17cff1c6229e4566bdf49f51abd91da68523674d7fafe1b857", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f1f5d1915c09d17cff1c6229e4566bdf49f51abd91da68523674d7fafe1b857", kill_on_drop: false }`
[INFO] [stdout] 4f1f5d1915c09d17cff1c6229e4566bdf49f51abd91da68523674d7fafe1b857