[INFO] cloning repository https://github.com/nekomaru0510/Violet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nekomaru0510/Violet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnekomaru0510%2FViolet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnekomaru0510%2FViolet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99e5035156776425ac5e7ca80a7e14f824009a54
[INFO] testing nekomaru0510/Violet against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnekomaru0510%2FViolet" "/workspace/builds/worker-44/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-44/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nekomaru0510/Violet on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-44/source/.cargo/config
[INFO] removed /workspace/builds/worker-44/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/nekomaru0510/Violet
[INFO] finished tweaking git repo https://github.com/nekomaru0510/Violet
[INFO] tweaked toml for git repo https://github.com/nekomaru0510/Violet written to /workspace/builds/worker-44/source/Cargo.toml
[INFO] crate git repo https://github.com/nekomaru0510/Violet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a34c2233c45876b99221d29da95ff09eec8c698511d1759ab39d740f0e29a8e
[INFO] running `Command { std: "docker" "start" "-a" "8a34c2233c45876b99221d29da95ff09eec8c698511d1759ab39d740f0e29a8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a34c2233c45876b99221d29da95ff09eec8c698511d1759ab39d740f0e29a8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a34c2233c45876b99221d29da95ff09eec8c698511d1759ab39d740f0e29a8e", kill_on_drop: false }`
[INFO] [stdout] 8a34c2233c45876b99221d29da95ff09eec8c698511d1759ab39d740f0e29a8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 091843feb3c6e66c75219bbe683cb8659b8c2b3b413274f823fbfb9638e02317
[INFO] running `Command { std: "docker" "start" "-a" "091843feb3c6e66c75219bbe683cb8659b8c2b3b413274f823fbfb9638e02317", kill_on_drop: false }`
[INFO] [stderr]    Compiling uart v0.1.0 (/opt/rustwide/workdir/driver/board/sifive_u/uart)
[INFO] [stderr]    Compiling class v0.1.0 (/opt/rustwide/workdir/violet/class)
[INFO] [stderr]    Compiling tock-registers v0.5.0
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling kernel v0.1.0 (/opt/rustwide/workdir/violet/kernel)
[INFO] [stderr]    Compiling entry v0.1.0 (/opt/rustwide/workdir/driver/arch/rv64/entry)
[INFO] [stderr]    Compiling plic v0.1.0 (/opt/rustwide/workdir/driver/board/sifive_u/plic)
[INFO] [stderr]    Compiling clint_timer v0.1.0 (/opt/rustwide/workdir/driver/board/sifive_u/clint_timer)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tock-registers-0.5.0/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tock-registers-0.5.0/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> violet/kernel/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(alloc_error_handler)]
[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] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> driver/arch/rv64/entry/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(llvm_asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> driver/arch/rv64/entry/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(naked_functions)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the LLVM-style inline assembly is unsupported in naked functions
[INFO] [stdout]   --> driver/arch/rv64/entry/src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | /         llvm_asm! ("
[INFO] [stdout] 13 | |             .align 4
[INFO] [stdout] 14 | |             //set sp
[INFO] [stdout] 15 | |             csrr    t0, mhartid
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | |         :
[INFO] [stdout] 34 | |         : "volatile");
[INFO] [stdout]    | |______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unsupported_naked_functions)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout]    = help: use the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: this warning originates in the macro `llvm_asm` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the LLVM-style inline assembly is unsupported in naked functions
[INFO] [stdout]    --> driver/arch/rv64/entry/src/lib.rs:56:9
[INFO] [stdout]     |
[INFO] [stdout] 56  | /         llvm_asm! ("
[INFO] [stdout] 57  | |         // from kernel
[INFO] [stdout] 58  | |         .align 4
[INFO] [stdout] 59  | |             csrrw sp, 0x340, sp // CSR=0x340=mscratch
[INFO] [stdout] ...   |
[INFO] [stdout] 109 | |         :
[INFO] [stdout] 110 | |         : "volatile");
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout]     = help: use the new asm! syntax specified in RFC 2873
[INFO] [stdout]     = note: this warning originates in the macro `llvm_asm` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling serial v0.1.0 (/opt/rustwide/workdir/resource/io/serial)
[INFO] [stderr] error: could not compile `kernel`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "091843feb3c6e66c75219bbe683cb8659b8c2b3b413274f823fbfb9638e02317", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "091843feb3c6e66c75219bbe683cb8659b8c2b3b413274f823fbfb9638e02317", kill_on_drop: false }`
[INFO] [stdout] 091843feb3c6e66c75219bbe683cb8659b8c2b3b413274f823fbfb9638e02317
