[INFO] cloning repository https://github.com/Ngox-Tsjengh/rCore
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ngox-Tsjengh/rCore" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNgox-Tsjengh%2FrCore", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNgox-Tsjengh%2FrCore'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9ab2df5a0b77d6c201e7145d828430f059ae0eb
[INFO] testing Ngox-Tsjengh/rCore against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNgox-Tsjengh%2FrCore" "/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/Ngox-Tsjengh/rCore on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-10/source/.cargo/config
[INFO] removed /workspace/builds/worker-10/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/Ngox-Tsjengh/rCore
[INFO] finished tweaking git repo https://github.com/Ngox-Tsjengh/rCore
[INFO] tweaked toml for git repo https://github.com/Ngox-Tsjengh/rCore written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/Ngox-Tsjengh/rCore already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "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] 801dc9a851a4fd8e5d2f9fdacb1f9b7957d54fc3de1e593a007bc342dea3ce68
[INFO] running `Command { std: "docker" "start" "-a" "801dc9a851a4fd8e5d2f9fdacb1f9b7957d54fc3de1e593a007bc342dea3ce68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "801dc9a851a4fd8e5d2f9fdacb1f9b7957d54fc3de1e593a007bc342dea3ce68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "801dc9a851a4fd8e5d2f9fdacb1f9b7957d54fc3de1e593a007bc342dea3ce68", kill_on_drop: false }`
[INFO] [stdout] 801dc9a851a4fd8e5d2f9fdacb1f9b7957d54fc3de1e593a007bc342dea3ce68
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b80c3282ac0665120e05717eb7c14e057e041e7c4da4a6d0cbe498d48a233af
[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" "0b80c3282ac0665120e05717eb7c14e057e041e7c4da4a6d0cbe498d48a233af", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling riscv-target v0.1.2
[INFO] [stderr]    Compiling riscv v0.6.0 (https://github.com/rcore-os/riscv#21e32ee1)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/riscv-ab2abd16c438337b/21e32ee/src/lib.rs:17:45
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![cfg_attr(feature = "inline-asm", feature(llvm_asm))]
[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 `riscv` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "0b80c3282ac0665120e05717eb7c14e057e041e7c4da4a6d0cbe498d48a233af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b80c3282ac0665120e05717eb7c14e057e041e7c4da4a6d0cbe498d48a233af", kill_on_drop: false }`
[INFO] [stdout] 0b80c3282ac0665120e05717eb7c14e057e041e7c4da4a6d0cbe498d48a233af