[INFO] fetching crate elrond-wasm-module-users 0.18.2...
[INFO] testing elrond-wasm-module-users-0.18.2 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate elrond-wasm-module-users 0.18.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate elrond-wasm-module-users 0.18.2 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate elrond-wasm-module-users 0.18.2
[INFO] finished tweaking crates.io crate elrond-wasm-module-users 0.18.2
[INFO] tweaked toml for crates.io crate elrond-wasm-module-users 0.18.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded elrond-wasm-derive v0.18.2
[INFO] [stderr]   Downloaded elrond-wasm-debug v0.18.2
[INFO] [stderr]   Downloaded mandos v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 436f76c2ef726368c74c1e0ff3f89c81fca7360477afebd39a775de2a6505f78
[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" "436f76c2ef726368c74c1e0ff3f89c81fca7360477afebd39a775de2a6505f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "436f76c2ef726368c74c1e0ff3f89c81fca7360477afebd39a775de2a6505f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "436f76c2ef726368c74c1e0ff3f89c81fca7360477afebd39a775de2a6505f78", kill_on_drop: false }`
[INFO] [stdout] 436f76c2ef726368c74c1e0ff3f89c81fca7360477afebd39a775de2a6505f78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2bd127736afcb5d1151516c595572c4beb42fd5d40559de0a98176d3bb7d893
[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" "e2bd127736afcb5d1151516c595572c4beb42fd5d40559de0a98176d3bb7d893", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.7.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling elrond-wasm-derive v0.18.2
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling elrond-wasm v0.18.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/elrond-wasm-0.18.2/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/elrond-wasm-0.18.2/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/elrond-wasm-0.18.2/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(control_flow_enum)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `elrond-wasm` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "e2bd127736afcb5d1151516c595572c4beb42fd5d40559de0a98176d3bb7d893", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2bd127736afcb5d1151516c595572c4beb42fd5d40559de0a98176d3bb7d893", kill_on_drop: false }`
[INFO] [stdout] e2bd127736afcb5d1151516c595572c4beb42fd5d40559de0a98176d3bb7d893