[INFO] fetching crate shtc1 0.1.0...
[INFO] testing shtc1-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate shtc1 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate shtc1 0.1.0 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 shtc1 0.1.0
[INFO] finished tweaking crates.io crate shtc1 0.1.0
[INFO] tweaked toml for crates.io crate shtc1 0.1.0 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]     Blocking waiting for file lock on package cache
[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] f91dc527c5d1d80d63a3ceb528ab86b15bed027f1cc46f5ee4ccd4a8c5e78d70
[INFO] running `Command { std: "docker" "start" "-a" "f91dc527c5d1d80d63a3ceb528ab86b15bed027f1cc46f5ee4ccd4a8c5e78d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f91dc527c5d1d80d63a3ceb528ab86b15bed027f1cc46f5ee4ccd4a8c5e78d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91dc527c5d1d80d63a3ceb528ab86b15bed027f1cc46f5ee4ccd4a8c5e78d70", kill_on_drop: false }`
[INFO] [stdout] f91dc527c5d1d80d63a3ceb528ab86b15bed027f1cc46f5ee4ccd4a8c5e78d70
[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] ccd745c768512753b9c8b61cd1913639e7cac978c05d3e1547bd78e6dee6a47f
[INFO] running `Command { std: "docker" "start" "-a" "ccd745c768512753b9c8b61cd1913639e7cac978c05d3e1547bd78e6dee6a47f", kill_on_drop: false }`
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling crc8 v0.1.1
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.6
[INFO] [stderr]    Compiling shtc1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "ccd745c768512753b9c8b61cd1913639e7cac978c05d3e1547bd78e6dee6a47f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccd745c768512753b9c8b61cd1913639e7cac978c05d3e1547bd78e6dee6a47f", kill_on_drop: false }`
[INFO] [stdout] ccd745c768512753b9c8b61cd1913639e7cac978c05d3e1547bd78e6dee6a47f
[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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 954060e0a490651d9e2912bbeb6564095f285d8cc1a015ecc68732f80d2015c4
[INFO] running `Command { std: "docker" "start" "-a" "954060e0a490651d9e2912bbeb6564095f285d8cc1a015ecc68732f80d2015c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling bytecount v0.6.2
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling bitflags v0.3.3
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling embedded-hal v0.1.3
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling serde v1.0.130
[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/embedded-hal-0.1.3/src/lib.rs:681:1
[INFO] [stdout]     |
[INFO] [stdout] 681 | #![feature(never_type)]
[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 `embedded-hal` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "954060e0a490651d9e2912bbeb6564095f285d8cc1a015ecc68732f80d2015c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "954060e0a490651d9e2912bbeb6564095f285d8cc1a015ecc68732f80d2015c4", kill_on_drop: false }`
[INFO] [stdout] 954060e0a490651d9e2912bbeb6564095f285d8cc1a015ecc68732f80d2015c4