[INFO] fetching crate d1-rom-rt 0.0.0...
[INFO] testing d1-rom-rt-0.0.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate d1-rom-rt 0.0.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate d1-rom-rt 0.0.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate d1-rom-rt 0.0.0
[INFO] finished tweaking crates.io crate d1-rom-rt 0.0.0
[INFO] tweaked toml for crates.io crate d1-rom-rt 0.0.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate d1-rom-rt 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile-register v0.2.1
[INFO] [stderr]   Downloaded ufmt-macros v0.3.0
[INFO] [stderr]   Downloaded embedded-hal v1.0.0-alpha.9
[INFO] [stderr]   Downloaded embedded-hal-nb v1.0.0-alpha.1
[INFO] [stderr]   Downloaded ufmt v0.2.0
[INFO] [stderr]   Downloaded ufmt-write v0.1.0
[INFO] [stderr]   Downloaded d1-rom-rt-macros v0.0.0
[INFO] [stderr]   Downloaded base-address v0.0.0
[INFO] [stderr]   Downloaded uart16550 v0.0.1
[INFO] [stderr]   Downloaded plic v0.0.2
[INFO] [stderr]   Downloaded aw-soc v0.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e82b53ed71afad07290766ad83967a485fc43b7c6faccea70b94918f1240f96
[INFO] running `Command { std: "docker" "start" "-a" "2e82b53ed71afad07290766ad83967a485fc43b7c6faccea70b94918f1240f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e82b53ed71afad07290766ad83967a485fc43b7c6faccea70b94918f1240f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e82b53ed71afad07290766ad83967a485fc43b7c6faccea70b94918f1240f96", kill_on_drop: false }`
[INFO] [stdout] 2e82b53ed71afad07290766ad83967a485fc43b7c6faccea70b94918f1240f96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 905cba5f478e8f50493d72849b7a4b4991ed81d1eb51f94efb487b4b5dc4a59a
[INFO] running `Command { std: "docker" "start" "-a" "905cba5f478e8f50493d72849b7a4b4991ed81d1eb51f94efb487b4b5dc4a59a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling embedded-hal v1.0.0-alpha.9
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling uart16550 v0.0.1
[INFO] [stderr]    Compiling base-address v0.0.0
[INFO] [stderr]    Compiling d1-rom-rt v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling plic v0.0.2
[INFO] [stderr]    Compiling volatile-register v0.2.1
[INFO] [stderr]    Compiling embedded-hal-nb v1.0.0-alpha.1
[INFO] [stderr]    Compiling aw-soc v0.0.0
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling d1-rom-rt-macros v0.0.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(naked_functions, asm_const)]
[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 `d1-rom-rt` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "905cba5f478e8f50493d72849b7a4b4991ed81d1eb51f94efb487b4b5dc4a59a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "905cba5f478e8f50493d72849b7a4b4991ed81d1eb51f94efb487b4b5dc4a59a", kill_on_drop: false }`
[INFO] [stdout] 905cba5f478e8f50493d72849b7a4b4991ed81d1eb51f94efb487b4b5dc4a59a
