[INFO] cloning repository https://github.com/paulsevere/color-picker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paulsevere/color-picker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulsevere%2Fcolor-picker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulsevere%2Fcolor-picker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2e5d21215af5150a62a063b1db4766882eba3a0
[INFO] checking paulsevere/color-picker against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulsevere%2Fcolor-picker" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paulsevere/color-picker on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paulsevere/color-picker
[INFO] finished tweaking git repo https://github.com/paulsevere/color-picker
[INFO] tweaked toml for git repo https://github.com/paulsevere/color-picker written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/paulsevere/color-picker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 356206f48392bdb65979b2951da2e54ac9ca10562aacec3b369680f57e3d3397
[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" "356206f48392bdb65979b2951da2e54ac9ca10562aacec3b369680f57e3d3397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "356206f48392bdb65979b2951da2e54ac9ca10562aacec3b369680f57e3d3397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "356206f48392bdb65979b2951da2e54ac9ca10562aacec3b369680f57e3d3397", kill_on_drop: false }`
[INFO] [stdout] 356206f48392bdb65979b2951da2e54ac9ca10562aacec3b369680f57e3d3397
[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=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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b20370d7a81f31d576b145f171de35b8cfa5f6f9c345cdd4b1607ad597f5da20
[INFO] running `Command { std: "docker" "start" "-a" "b20370d7a81f31d576b145f171de35b8cfa5f6f9c345cdd4b1607ad597f5da20", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.24
[INFO] [stderr]    Compiling num-traits v0.1.39
[INFO] [stderr]    Compiling khronos_api v1.0.1
[INFO] [stderr]     Checking piston-texture v0.5.0
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking dump v0.1.1
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]    Compiling xml-rs v0.6.0
[INFO] [stderr]     Checking vecmath v0.3.0
[INFO] [stderr]     Checking shared_library v0.1.6
[INFO] [stderr]     Checking deflate v0.7.12
[INFO] [stderr]    Compiling backtrace-sys v0.1.11
[INFO] [stderr]     Checking nodrop v0.1.9
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling wayland-scanner v0.8.7
[INFO] [stderr]     Checking pistoncore-input v0.18.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/dump-0.1.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_intrinsics)]
[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 `dump`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b20370d7a81f31d576b145f171de35b8cfa5f6f9c345cdd4b1607ad597f5da20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b20370d7a81f31d576b145f171de35b8cfa5f6f9c345cdd4b1607ad597f5da20", kill_on_drop: false }`
[INFO] [stdout] b20370d7a81f31d576b145f171de35b8cfa5f6f9c345cdd4b1607ad597f5da20