[INFO] fetching crate type-freak 0.2.0...
[INFO] testing type-freak-0.2.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate type-freak 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate type-freak 0.2.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate type-freak 0.2.0
[INFO] finished tweaking crates.io crate type-freak 0.2.0
[INFO] tweaked toml for crates.io crate type-freak 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54cb7fb6cfb0ffa6074ebaaa3d5240859e0812c9b3f104e243c13787d1fdb868
[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" "54cb7fb6cfb0ffa6074ebaaa3d5240859e0812c9b3f104e243c13787d1fdb868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54cb7fb6cfb0ffa6074ebaaa3d5240859e0812c9b3f104e243c13787d1fdb868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54cb7fb6cfb0ffa6074ebaaa3d5240859e0812c9b3f104e243c13787d1fdb868", kill_on_drop: false }`
[INFO] [stdout] 54cb7fb6cfb0ffa6074ebaaa3d5240859e0812c9b3f104e243c13787d1fdb868
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4ea2edd23b395fed2e1698e18c58a66b63f1e6c77bc352e2d5eeb2320065db7
[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" "a4ea2edd23b395fed2e1698e18c58a66b63f1e6c77bc352e2d5eeb2320065db7", kill_on_drop: false }`
[INFO] [stderr]    Compiling type-freak v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:215:1
[INFO] [stdout]     |
[INFO] [stdout] 215 | #![feature(vec_remove_item)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `type-freak`.
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "a4ea2edd23b395fed2e1698e18c58a66b63f1e6c77bc352e2d5eeb2320065db7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4ea2edd23b395fed2e1698e18c58a66b63f1e6c77bc352e2d5eeb2320065db7", kill_on_drop: false }`
[INFO] [stdout] a4ea2edd23b395fed2e1698e18c58a66b63f1e6c77bc352e2d5eeb2320065db7
