[INFO] fetching crate static-ref 0.2.1...
[INFO] testing static-ref-0.2.1 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate static-ref 0.2.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate static-ref 0.2.1 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate static-ref 0.2.1
[INFO] finished tweaking crates.io crate static-ref 0.2.1
[INFO] tweaked toml for crates.io crate static-ref 0.2.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", 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] 304737492aa7d02468bb584a78293ec46a8dd348e63ec65e9df1ffd5fa0f8dac
[INFO] running `Command { std: "docker" "start" "-a" "304737492aa7d02468bb584a78293ec46a8dd348e63ec65e9df1ffd5fa0f8dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "304737492aa7d02468bb584a78293ec46a8dd348e63ec65e9df1ffd5fa0f8dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "304737492aa7d02468bb584a78293ec46a8dd348e63ec65e9df1ffd5fa0f8dac", kill_on_drop: false }`
[INFO] [stdout] 304737492aa7d02468bb584a78293ec46a8dd348e63ec65e9df1ffd5fa0f8dac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 531fda37e3985d63d63d8ea3f6bf04dcc259d6c8e10c328b8c2d33c15d00e371
[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" "531fda37e3985d63d63d8ea3f6bf04dcc259d6c8e10c328b8c2d33c15d00e371", kill_on_drop: false }`
[INFO] [stderr]    Compiling static-ref v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_fn)]
[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 `static-ref`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "531fda37e3985d63d63d8ea3f6bf04dcc259d6c8e10c328b8c2d33c15d00e371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "531fda37e3985d63d63d8ea3f6bf04dcc259d6c8e10c328b8c2d33c15d00e371", kill_on_drop: false }`
[INFO] [stdout] 531fda37e3985d63d63d8ea3f6bf04dcc259d6c8e10c328b8c2d33c15d00e371
