[INFO] fetching crate xuantie 0.0.1...
[INFO] testing xuantie-0.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate xuantie 0.0.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate xuantie 0.0.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-13/source/.cargo/config.toml
[INFO] started tweaking crates.io crate xuantie 0.0.1
[INFO] finished tweaking crates.io crate xuantie 0.0.1
[INFO] tweaked toml for crates.io crate xuantie 0.0.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fa3e7aef4c5bf196bceb213d0894e454916dbf46c6ea3984ffe8aaf1c05efca
[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" "9fa3e7aef4c5bf196bceb213d0894e454916dbf46c6ea3984ffe8aaf1c05efca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fa3e7aef4c5bf196bceb213d0894e454916dbf46c6ea3984ffe8aaf1c05efca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fa3e7aef4c5bf196bceb213d0894e454916dbf46c6ea3984ffe8aaf1c05efca", kill_on_drop: false }`
[INFO] [stdout] 9fa3e7aef4c5bf196bceb213d0894e454916dbf46c6ea3984ffe8aaf1c05efca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", 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] 20f3e793300f8e1f742976d4a831dd6d359614a9fa4c3b38012da21e6ba7e481
[INFO] running `Command { std: "docker" "start" "-a" "20f3e793300f8e1f742976d4a831dd6d359614a9fa4c3b38012da21e6ba7e481", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling xuantie v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/asm.rs:45:30
[INFO] [stdout]    |
[INFO] [stdout] 45 |     asm!(".word 0x0245000B", in("a0") va)
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/asm.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 51 |     asm!(".word 0x0285000B", in("a0") pa)
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/asm.rs:57:30
[INFO] [stdout]    |
[INFO] [stdout] 57 |     asm!(".word 0x0215000B", in("a0") set_or_way)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/asm.rs:69:30
[INFO] [stdout]    |
[INFO] [stdout] 69 |     asm!(".word 0x0265000B", in("a0") va)
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/asm.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |     asm!(".word 0x02A5000B", in("a0") pa)
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/asm.rs:81:30
[INFO] [stdout]    |
[INFO] [stdout] 81 |     asm!(".word 0x0225000B", in("a0") set_or_way)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/asm.rs:93:30
[INFO] [stdout]    |
[INFO] [stdout] 93 |     asm!(".word 0x0275000B", in("a0") va)
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]   --> src/asm.rs:99:30
[INFO] [stdout]    |
[INFO] [stdout] 99 |     asm!(".word 0x02B5000B", in("a0") pa)
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]    --> src/asm.rs:105:30
[INFO] [stdout]     |
[INFO] [stdout] 105 |     asm!(".word 0x0235000B", in("a0") set_or_way)
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]    --> src/asm.rs:123:30
[INFO] [stdout]     |
[INFO] [stdout] 123 |     asm!(".word 0x0305000B", in("a0") va)
[INFO] [stdout]     |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `a0`: unknown register
[INFO] [stdout]    --> src/asm.rs:129:30
[INFO] [stdout]     |
[INFO] [stdout] 129 |     asm!(".word 0x0385000B", in("a0") pa)
[INFO] [stdout]     |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 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 `xuantie` due to 13 previous errors
[INFO] running `Command { std: "docker" "inspect" "20f3e793300f8e1f742976d4a831dd6d359614a9fa4c3b38012da21e6ba7e481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20f3e793300f8e1f742976d4a831dd6d359614a9fa4c3b38012da21e6ba7e481", kill_on_drop: false }`
[INFO] [stdout] 20f3e793300f8e1f742976d4a831dd6d359614a9fa4c3b38012da21e6ba7e481