[INFO] cloning repository https://github.com/duskmoon314/rv-csr-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/duskmoon314/rv-csr-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduskmoon314%2Frv-csr-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduskmoon314%2Frv-csr-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f05fcd3c6ef64fc0c707043dc7b37d01523db999
[INFO] testing duskmoon314/rv-csr-test against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduskmoon314%2Frv-csr-test" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/duskmoon314/rv-csr-test 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-6/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-6/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/duskmoon314/rv-csr-test
[INFO] finished tweaking git repo https://github.com/duskmoon314/rv-csr-test
[INFO] tweaked toml for git repo https://github.com/duskmoon314/rv-csr-test written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/duskmoon314/rv-csr-test 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] 935c4a72848d878e0e96bef182f562203c0d6187f96660e92ab41d3e202ec936
[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" "935c4a72848d878e0e96bef182f562203c0d6187f96660e92ab41d3e202ec936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "935c4a72848d878e0e96bef182f562203c0d6187f96660e92ab41d3e202ec936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "935c4a72848d878e0e96bef182f562203c0d6187f96660e92ab41d3e202ec936", kill_on_drop: false }`
[INFO] [stdout] 935c4a72848d878e0e96bef182f562203c0d6187f96660e92ab41d3e202ec936
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 765d7759237d080a413ddff653679b3a374f38f12f7c70bd3577be66bb1a79c3
[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" "765d7759237d080a413ddff653679b3a374f38f12f7c70bd3577be66bb1a79c3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling riscv-target v0.1.2
[INFO] [stderr]    Compiling volatile-register v0.2.1
[INFO] [stderr]    Compiling embedded-hal v1.0.0-alpha.4
[INFO] [stderr]    Compiling rv-plic v0.4.0 (https://github.com/duskmoon314/rv-plic#e94d511e)
[INFO] [stderr]    Compiling riscv v0.6.0 (https://github.com/duskmoon314/riscv.git?branch=extN#f31def9e)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/riscv-fe4cb92025bd9ab8/f31def9/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" "765d7759237d080a413ddff653679b3a374f38f12f7c70bd3577be66bb1a79c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "765d7759237d080a413ddff653679b3a374f38f12f7c70bd3577be66bb1a79c3", kill_on_drop: false }`
[INFO] [stdout] 765d7759237d080a413ddff653679b3a374f38f12f7c70bd3577be66bb1a79c3