[INFO] cloning repository https://github.com/xiurui-pan/rCore_user
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xiurui-pan/rCore_user" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiurui-pan%2FrCore_user", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiurui-pan%2FrCore_user'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc3acf2f7ab6e354abb128854b6bd40583463d56
[INFO] testing xiurui-pan/rCore_user against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxiurui-pan%2FrCore_user" "/workspace/builds/worker-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xiurui-pan/rCore_user on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-53/source/.cargo/config
[INFO] started tweaking git repo https://github.com/xiurui-pan/rCore_user
[INFO] finished tweaking git repo https://github.com/xiurui-pan/rCore_user
[INFO] tweaked toml for git repo https://github.com/xiurui-pan/rCore_user written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate git repo https://github.com/xiurui-pan/rCore_user already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 016c0999776ccb8783fa6488c06ea63fae6a6e615e350401cf2f9f5c15b5b7f4
[INFO] running `Command { std: "docker" "start" "-a" "016c0999776ccb8783fa6488c06ea63fae6a6e615e350401cf2f9f5c15b5b7f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "016c0999776ccb8783fa6488c06ea63fae6a6e615e350401cf2f9f5c15b5b7f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "016c0999776ccb8783fa6488c06ea63fae6a6e615e350401cf2f9f5c15b5b7f4", kill_on_drop: false }`
[INFO] [stdout] 016c0999776ccb8783fa6488c06ea63fae6a6e615e350401cf2f9f5c15b5b7f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39151026dd52da8da2cbe626bd002d42e7d7f5f831420debe12bebaa8d49ce29
[INFO] running `Command { std: "docker" "start" "-a" "39151026dd52da8da2cbe626bd002d42e7d7f5f831420debe12bebaa8d49ce29", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling user_lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't allocate output register for constraint '{x10}'
[INFO] [stdout]   --> src/syscall.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         llvm_asm!("ecall"
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `user_lib` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "39151026dd52da8da2cbe626bd002d42e7d7f5f831420debe12bebaa8d49ce29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39151026dd52da8da2cbe626bd002d42e7d7f5f831420debe12bebaa8d49ce29", kill_on_drop: false }`
[INFO] [stdout] 39151026dd52da8da2cbe626bd002d42e7d7f5f831420debe12bebaa8d49ce29