[INFO] cloning repository https://github.com/mengxiangyue/rust-riscv-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mengxiangyue/rust-riscv-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmengxiangyue%2Frust-riscv-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmengxiangyue%2Frust-riscv-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e8ac79751733b4312a550e66decb7a5d488c5e0
[INFO] testing mengxiangyue/rust-riscv-os against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmengxiangyue%2Frust-riscv-os" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mengxiangyue/rust-riscv-os 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-2/source/.cargo/config
[INFO] removed /workspace/builds/worker-2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/mengxiangyue/rust-riscv-os
[INFO] finished tweaking git repo https://github.com/mengxiangyue/rust-riscv-os
[INFO] tweaked toml for git repo https://github.com/mengxiangyue/rust-riscv-os written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mengxiangyue/rust-riscv-os 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", 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] 761735f5ccae79252ef58ac1559e15001dc2998e7633a728dc15e318337c4277
[INFO] running `Command { std: "docker" "start" "-a" "761735f5ccae79252ef58ac1559e15001dc2998e7633a728dc15e318337c4277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "761735f5ccae79252ef58ac1559e15001dc2998e7633a728dc15e318337c4277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "761735f5ccae79252ef58ac1559e15001dc2998e7633a728dc15e318337c4277", kill_on_drop: false }`
[INFO] [stdout] 761735f5ccae79252ef58ac1559e15001dc2998e7633a728dc15e318337c4277
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04fab3a0e52833b54362b3ecac8754b40088eb4002137261141ad995caa97d29
[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" "04fab3a0e52833b54362b3ecac8754b40088eb4002137261141ad995caa97d29", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-riscv-os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `llvm_asm`: will be removed from the compiler, use asm! instead
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         llvm_asm!("ecall"
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid instruction mnemonic 'la'
[INFO] [stdout]    |
[INFO] [stdout] note: instantiated into assembly here
[INFO] [stdout]   --> <inline asm>:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     la sp, boot_stack_top
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't allocate output register for constraint '{x10}'
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         llvm_asm!("ecall"
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-riscv-os` due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "04fab3a0e52833b54362b3ecac8754b40088eb4002137261141ad995caa97d29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04fab3a0e52833b54362b3ecac8754b40088eb4002137261141ad995caa97d29", kill_on_drop: false }`
[INFO] [stdout] 04fab3a0e52833b54362b3ecac8754b40088eb4002137261141ad995caa97d29