[INFO] fetching crate glade_derive 0.1.0-alpha...
[INFO] testing glade_derive-0.1.0-alpha against 1.47.0 for beta-1.48-1
[INFO] extracting crate glade_derive 0.1.0-alpha into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate glade_derive 0.1.0-alpha 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 glade_derive 0.1.0-alpha
[INFO] finished tweaking crates.io crate glade_derive 0.1.0-alpha
[INFO] tweaked toml for crates.io crate glade_derive 0.1.0-alpha written to /workspace/builds/worker-10/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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 71ff16808803a16f00e7f376e68fc3640f932ce7bf6ac5b6c4e73f2fcac88469
[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" "71ff16808803a16f00e7f376e68fc3640f932ce7bf6ac5b6c4e73f2fcac88469", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71ff16808803a16f00e7f376e68fc3640f932ce7bf6ac5b6c4e73f2fcac88469", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71ff16808803a16f00e7f376e68fc3640f932ce7bf6ac5b6c4e73f2fcac88469", kill_on_drop: false }`
[INFO] [stdout] 71ff16808803a16f00e7f376e68fc3640f932ce7bf6ac5b6c4e73f2fcac88469
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 19436a14a084f796de25dc6e623d7efb57b26dba33d3e85e622c00f3aecd82d1
[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" "19436a14a084f796de25dc6e623d7efb57b26dba33d3e85e622c00f3aecd82d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling amplify v0.1.9
[INFO] [stderr]    Compiling derive_wrapper v0.1.7
[INFO] [stderr]    Compiling amplify_derive v0.1.3
[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/amplify_derive-0.1.3/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(try_find)]
[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 `amplify_derive`.
[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" "19436a14a084f796de25dc6e623d7efb57b26dba33d3e85e622c00f3aecd82d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19436a14a084f796de25dc6e623d7efb57b26dba33d3e85e622c00f3aecd82d1", kill_on_drop: false }`
[INFO] [stdout] 19436a14a084f796de25dc6e623d7efb57b26dba33d3e85e622c00f3aecd82d1
