[INFO] cloning repository https://github.com/wusyong/corgo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wusyong/corgo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwusyong%2Fcorgo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwusyong%2Fcorgo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f849ca9f36ddf104d7c7e8edb8a72a7c8df2acaf
[INFO] testing wusyong/corgo against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwusyong%2Fcorgo" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wusyong/corgo 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] removed /workspace/builds/worker-7/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/wusyong/corgo
[INFO] finished tweaking git repo https://github.com/wusyong/corgo
[INFO] tweaked toml for git repo https://github.com/wusyong/corgo written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/wusyong/corgo 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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] a78a315bee4e6686b80ce686ae75b5809cf73e8bd5cc3061e71b32d614d1df0e
[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" "a78a315bee4e6686b80ce686ae75b5809cf73e8bd5cc3061e71b32d614d1df0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a78a315bee4e6686b80ce686ae75b5809cf73e8bd5cc3061e71b32d614d1df0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a78a315bee4e6686b80ce686ae75b5809cf73e8bd5cc3061e71b32d614d1df0e", kill_on_drop: false }`
[INFO] [stdout] a78a315bee4e6686b80ce686ae75b5809cf73e8bd5cc3061e71b32d614d1df0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a45009b1de0966702d49b6ac3a5a3d7b3e53dc3dd2531c5891d7b2614f24e6f4
[INFO] running `Command { std: "docker" "start" "-a" "a45009b1de0966702d49b6ac3a5a3d7b3e53dc3dd2531c5891d7b2614f24e6f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling corgo 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:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / #![feature(
[INFO] [stdout] 6  | |     panic_info_message,
[INFO] [stdout] 7  | |     llvm_asm,
[INFO] [stdout] 8  | |     allocator_api,
[INFO] [stdout] 9  | |     alloc_error_handler,
[INFO] [stdout] 10 | |     alloc_prelude
[INFO] [stdout] 11 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `corgo` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "a45009b1de0966702d49b6ac3a5a3d7b3e53dc3dd2531c5891d7b2614f24e6f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a45009b1de0966702d49b6ac3a5a3d7b3e53dc3dd2531c5891d7b2614f24e6f4", kill_on_drop: false }`
[INFO] [stdout] a45009b1de0966702d49b6ac3a5a3d7b3e53dc3dd2531c5891d7b2614f24e6f4