[INFO] cloning repository https://github.com/ElArtista/Blocky
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ElArtista/Blocky" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElArtista%2FBlocky", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElArtista%2FBlocky'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1dcf381934a580872a0ac5534c01c541f2cb5883
[INFO] testing ElArtista/Blocky against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElArtista%2FBlocky" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ElArtista/Blocky on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ElArtista/Blocky
[INFO] finished tweaking git repo https://github.com/ElArtista/Blocky
[INFO] tweaked toml for git repo https://github.com/ElArtista/Blocky written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/ElArtista/Blocky already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pretty-bytes v0.2.2
[INFO] [stderr]   Downloaded packed_simd_2 v0.3.4
[INFO] [stderr]   Downloaded fast_rsync v0.1.3
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a0926cda972966c645ad90b1d523893c8c6cd674c23d24c92a56daae553d5cf
[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" "5a0926cda972966c645ad90b1d523893c8c6cd674c23d24c92a56daae553d5cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a0926cda972966c645ad90b1d523893c8c6cd674c23d24c92a56daae553d5cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a0926cda972966c645ad90b1d523893c8c6cd674c23d24c92a56daae553d5cf", kill_on_drop: false }`
[INFO] [stdout] 5a0926cda972966c645ad90b1d523893c8c6cd674c23d24c92a56daae553d5cf
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e35d50da3e84303562af7f61c81427a0f097a04595b49b90952426a8b066dfb
[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" "4e35d50da3e84303562af7f61c81427a0f097a04595b49b90952426a8b066dfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling packed_simd_2 v0.3.4
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling os_str_bytes v2.4.0
[INFO] [stderr]    Compiling humantime v2.0.1
[INFO] [stderr]    Compiling textwrap v0.12.1
[INFO] [stderr]    Compiling net2 v0.2.36
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling sha2 v0.9.2
[INFO] [stderr]    Compiling pretty-bytes v0.2.2
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling regex v1.4.2
[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/packed_simd_2-0.3.4/src/lib.rs:202:1
[INFO] [stdout]     |
[INFO] [stdout] 202 | / #![feature(
[INFO] [stdout] 203 | |     repr_simd,
[INFO] [stdout] 204 | |     rustc_attrs,
[INFO] [stdout] 205 | |     const_fn,
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     llvm_asm
[INFO] [stdout] 216 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling env_logger v0.8.2
[INFO] [stderr]    Compiling native-tls v0.2.6
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling tokio v0.2.23
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling clap v3.0.0-beta.2
[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 `packed_simd_2`
[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" "4e35d50da3e84303562af7f61c81427a0f097a04595b49b90952426a8b066dfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e35d50da3e84303562af7f61c81427a0f097a04595b49b90952426a8b066dfb", kill_on_drop: false }`
[INFO] [stdout] 4e35d50da3e84303562af7f61c81427a0f097a04595b49b90952426a8b066dfb