[INFO] cloning repository https://github.com/gretchenfrage/clusterzip
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gretchenfrage/clusterzip" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgretchenfrage%2Fclusterzip", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgretchenfrage%2Fclusterzip'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3950a835105c2ce215310f68c64029a79ec58278
[INFO] testing gretchenfrage/clusterzip against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgretchenfrage%2Fclusterzip" "/workspace/builds/worker-113/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-113/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gretchenfrage/clusterzip on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gretchenfrage/clusterzip
[INFO] finished tweaking git repo https://github.com/gretchenfrage/clusterzip
[INFO] tweaked toml for git repo https://github.com/gretchenfrage/clusterzip written to /workspace/builds/worker-113/source/Cargo.toml
[INFO] crate git repo https://github.com/gretchenfrage/clusterzip already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded monitor v0.1.0
[INFO] [stderr]   Downloaded ssh2 v0.3.2
[INFO] [stderr]   Downloaded rust-libcore v0.0.3
[INFO] [stderr]   Downloaded num-bigint v0.1.43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 078946682e6515aacefeaf61e479d3cf3e6be4f8acf988de99dbc4710cc0a030
[INFO] running `Command { std: "docker" "start" "-a" "078946682e6515aacefeaf61e479d3cf3e6be4f8acf988de99dbc4710cc0a030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "078946682e6515aacefeaf61e479d3cf3e6be4f8acf988de99dbc4710cc0a030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "078946682e6515aacefeaf61e479d3cf3e6be4f8acf988de99dbc4710cc0a030", kill_on_drop: false }`
[INFO] [stdout] 078946682e6515aacefeaf61e479d3cf3e6be4f8acf988de99dbc4710cc0a030
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2b2607fa7577cea1e3fa8b86058aa5f8e5bc8de983609dffe68a547b420ab8e
[INFO] running `Command { std: "docker" "start" "-a" "c2b2607fa7577cea1e3fa8b86058aa5f8e5bc8de983609dffe68a547b420ab8e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling cc v1.0.9
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling futures v0.1.19
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling serde v1.0.35
[INFO] [stderr]    Compiling file v1.1.1
[INFO] [stderr]    Compiling volatile_cell v1.0.0
[INFO] [stderr]    Compiling monitor v0.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[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/volatile_cell-1.0.0/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![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 `volatile_cell`
[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" "c2b2607fa7577cea1e3fa8b86058aa5f8e5bc8de983609dffe68a547b420ab8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2b2607fa7577cea1e3fa8b86058aa5f8e5bc8de983609dffe68a547b420ab8e", kill_on_drop: false }`
[INFO] [stdout] c2b2607fa7577cea1e3fa8b86058aa5f8e5bc8de983609dffe68a547b420ab8e
