[INFO] cloning repository https://github.com/sakurafisch/rCore-Practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sakurafisch/rCore-Practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsakurafisch%2FrCore-Practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsakurafisch%2FrCore-Practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 709af338b3db82baf73656f0c0b244855b596475
[INFO] testing sakurafisch/rCore-Practice against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsakurafisch%2FrCore-Practice" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sakurafisch/rCore-Practice on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-14/source/.cargo/config
[INFO] started tweaking git repo https://github.com/sakurafisch/rCore-Practice
[INFO] finished tweaking git repo https://github.com/sakurafisch/rCore-Practice
[INFO] tweaked toml for git repo https://github.com/sakurafisch/rCore-Practice written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/sakurafisch/rCore-Practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2305c9ea8ae02e08ed8480830fcd2e9985fdde2636aad5de4e2ed52f43f087d
[INFO] running `Command { std: "docker" "start" "-a" "e2305c9ea8ae02e08ed8480830fcd2e9985fdde2636aad5de4e2ed52f43f087d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2305c9ea8ae02e08ed8480830fcd2e9985fdde2636aad5de4e2ed52f43f087d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2305c9ea8ae02e08ed8480830fcd2e9985fdde2636aad5de4e2ed52f43f087d", kill_on_drop: false }`
[INFO] [stdout] e2305c9ea8ae02e08ed8480830fcd2e9985fdde2636aad5de4e2ed52f43f087d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc3dffa9cf7ca142dfbeab5406953517dacec1a9caa8ae1ed2097807219e4fa8
[INFO] running `Command { std: "docker" "start" "-a" "bc3dffa9cf7ca142dfbeab5406953517dacec1a9caa8ae1ed2097807219e4fa8", kill_on_drop: false }`
[INFO] [stderr]    Compiling os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(llvm_asm)]
[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 `os` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "bc3dffa9cf7ca142dfbeab5406953517dacec1a9caa8ae1ed2097807219e4fa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc3dffa9cf7ca142dfbeab5406953517dacec1a9caa8ae1ed2097807219e4fa8", kill_on_drop: false }`
[INFO] [stdout] bc3dffa9cf7ca142dfbeab5406953517dacec1a9caa8ae1ed2097807219e4fa8
