[INFO] fetching crate smithy_core 0.0.7...
[INFO] testing smithy_core-0.0.7 against 1.47.0 for beta-1.48-1
[INFO] extracting crate smithy_core 0.0.7 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate smithy_core 0.0.7 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 smithy_core 0.0.7
[INFO] finished tweaking crates.io crate smithy_core 0.0.7
[INFO] tweaked toml for crates.io crate smithy_core 0.0.7 written to /workspace/builds/worker-11/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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f2e3508d1f2d3ee450cacba37e7b37b63a1ee9d5da3451402cc66e827537f969
[INFO] running `Command { std: "docker" "start" "-a" "f2e3508d1f2d3ee450cacba37e7b37b63a1ee9d5da3451402cc66e827537f969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2e3508d1f2d3ee450cacba37e7b37b63a1ee9d5da3451402cc66e827537f969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2e3508d1f2d3ee450cacba37e7b37b63a1ee9d5da3451402cc66e827537f969", kill_on_drop: false }`
[INFO] [stdout] f2e3508d1f2d3ee450cacba37e7b37b63a1ee9d5da3451402cc66e827537f969
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 26d46cb05dd6c61ad61ad1ddca28310f91d104769bf096d42b5413b0d700d8cd
[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" "26d46cb05dd6c61ad61ad1ddca28310f91d104769bf096d42b5413b0d700d8cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.68
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling enum_derive v0.1.7
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.68
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.68
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.68
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.68
[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/wasm-bindgen-0.2.68/src/lib.rs:11:34
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![cfg_attr(feature = "nightly", feature(unsize))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasm-bindgen`.
[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" "26d46cb05dd6c61ad61ad1ddca28310f91d104769bf096d42b5413b0d700d8cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26d46cb05dd6c61ad61ad1ddca28310f91d104769bf096d42b5413b0d700d8cd", kill_on_drop: false }`
[INFO] [stdout] 26d46cb05dd6c61ad61ad1ddca28310f91d104769bf096d42b5413b0d700d8cd
