[INFO] updating cached repository https://github.com/jjwest/gameoflife
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8c08d80c800f3c179f0ff9d2233b93deea12b8b
[INFO] testing jjwest/gameoflife against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjjwest%2Fgameoflife" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jjwest/gameoflife on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jjwest/gameoflife
[INFO] finished tweaking git repo https://github.com/jjwest/gameoflife
[INFO] tweaked toml for git repo https://github.com/jjwest/gameoflife written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jjwest/gameoflife already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a6130538be41548d6f17015a5cb3af9e7ca1d3bf7e9c6d8bd5622edf651f30c
[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" "1a6130538be41548d6f17015a5cb3af9e7ca1d3bf7e9c6d8bd5622edf651f30c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a6130538be41548d6f17015a5cb3af9e7ca1d3bf7e9c6d8bd5622edf651f30c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a6130538be41548d6f17015a5cb3af9e7ca1d3bf7e9c6d8bd5622edf651f30c", kill_on_drop: false }`
[INFO] [stdout] 1a6130538be41548d6f17015a5cb3af9e7ca1d3bf7e9c6d8bd5622edf651f30c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 773dc5342f92aecb7d9ad0f2b2bfc3c848a10b423639d7ba2329b440863d60e9
[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" "773dc5342f92aecb7d9ad0f2b2bfc3c848a10b423639d7ba2329b440863d60e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling libc v0.2.29
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling cairo-rs v0.2.0
[INFO] [stderr]    Compiling gio v0.2.0
[INFO] [stderr]    Compiling gdk-pixbuf v0.2.0
[INFO] [stderr]    Compiling c_vec v1.2.1
[INFO] [stderr]    Compiling gdk v0.6.0
[INFO] [stderr]    Compiling gtk v0.2.0
[INFO] [stderr]    Compiling glib-sys v0.4.0
[INFO] [stderr]    Compiling gobject-sys v0.4.0
[INFO] [stderr]    Compiling gio-sys v0.4.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.4.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.4.0
[INFO] [stderr]    Compiling pango-sys v0.4.0
[INFO] [stderr]    Compiling gdk-sys v0.4.0
[INFO] [stderr]    Compiling atk-sys v0.4.0
[INFO] [stderr]    Compiling gtk-sys v0.4.0
[INFO] [stderr]    Compiling glib v0.3.0
[INFO] [stderr]    Compiling pango v0.2.0
[INFO] [stderr]    Compiling gameoflife v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro)]
[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 `gameoflife`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "773dc5342f92aecb7d9ad0f2b2bfc3c848a10b423639d7ba2329b440863d60e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "773dc5342f92aecb7d9ad0f2b2bfc3c848a10b423639d7ba2329b440863d60e9", kill_on_drop: false }`
[INFO] [stdout] 773dc5342f92aecb7d9ad0f2b2bfc3c848a10b423639d7ba2329b440863d60e9