[INFO] cloning repository https://github.com/paulsevere/blockchin-img
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paulsevere/blockchin-img" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulsevere%2Fblockchin-img", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulsevere%2Fblockchin-img'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9c6fee7b9e7647742d7978f50ed5f1ebc856c5b
[INFO] testing paulsevere/blockchin-img against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulsevere%2Fblockchin-img" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paulsevere/blockchin-img on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paulsevere/blockchin-img
[INFO] finished tweaking git repo https://github.com/paulsevere/blockchin-img
[INFO] tweaked toml for git repo https://github.com/paulsevere/blockchin-img written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/paulsevere/blockchin-img already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 624e321657d66c565bacf7284b9c7faf511862ccaebbbddb5bddad689d0caf6a
[INFO] running `Command { std: "docker" "start" "-a" "624e321657d66c565bacf7284b9c7faf511862ccaebbbddb5bddad689d0caf6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "624e321657d66c565bacf7284b9c7faf511862ccaebbbddb5bddad689d0caf6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "624e321657d66c565bacf7284b9c7faf511862ccaebbbddb5bddad689d0caf6a", kill_on_drop: false }`
[INFO] [stdout] 624e321657d66c565bacf7284b9c7faf511862ccaebbbddb5bddad689d0caf6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcdd7bbba0dda68481032c2e37ae4d7cca142354694d3cf48b6b942c416618b5
[INFO] running `Command { std: "docker" "start" "-a" "fcdd7bbba0dda68481032c2e37ae4d7cca142354694d3cf48b6b942c416618b5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.0
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling adler32 v1.0.2
[INFO] [stderr]    Compiling byteorder v1.2.1
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stderr]    Compiling scoped_threadpool v0.1.8
[INFO] [stderr]    Compiling dump v0.1.1
[INFO] [stderr]    Compiling gif v0.9.2
[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/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` 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" "fcdd7bbba0dda68481032c2e37ae4d7cca142354694d3cf48b6b942c416618b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcdd7bbba0dda68481032c2e37ae4d7cca142354694d3cf48b6b942c416618b5", kill_on_drop: false }`
[INFO] [stdout] fcdd7bbba0dda68481032c2e37ae4d7cca142354694d3cf48b6b942c416618b5