[INFO] cloning repository https://github.com/elpinal/rain-vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elpinal/rain-vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felpinal%2Frain-vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felpinal%2Frain-vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9bbd7110f539ac0f5a589125e6cd948133d6a68
[INFO] testing elpinal/rain-vm against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felpinal%2Frain-vm" "/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/elpinal/rain-vm on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/elpinal/rain-vm
[INFO] finished tweaking git repo https://github.com/elpinal/rain-vm
[INFO] tweaked toml for git repo https://github.com/elpinal/rain-vm written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/elpinal/rain-vm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd8553b4f9a5242469685e42b2a0093afeaf7b77d5776da7f10770e6ca6ac9b4
[INFO] running `Command { std: "docker" "start" "-a" "dd8553b4f9a5242469685e42b2a0093afeaf7b77d5776da7f10770e6ca6ac9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd8553b4f9a5242469685e42b2a0093afeaf7b77d5776da7f10770e6ca6ac9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd8553b4f9a5242469685e42b2a0093afeaf7b77d5776da7f10770e6ca6ac9b4", kill_on_drop: false }`
[INFO] [stdout] dd8553b4f9a5242469685e42b2a0093afeaf7b77d5776da7f10770e6ca6ac9b4
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fea42b66530d24faf8bb42c7b0a2eea39335e8de31ed310aa4949b88fc861e4e
[INFO] running `Command { std: "docker" "start" "-a" "fea42b66530d24faf8bb42c7b0a2eea39335e8de31ed310aa4949b88fc861e4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling structopt-derive v0.2.13
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling structopt v0.2.13
[INFO] [stderr]    Compiling rain-vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[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 `rain-vm` 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" "fea42b66530d24faf8bb42c7b0a2eea39335e8de31ed310aa4949b88fc861e4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fea42b66530d24faf8bb42c7b0a2eea39335e8de31ed310aa4949b88fc861e4e", kill_on_drop: false }`
[INFO] [stdout] fea42b66530d24faf8bb42c7b0a2eea39335e8de31ed310aa4949b88fc861e4e