[INFO] fetching crate msp430 0.4.1...
[INFO] testing msp430-0.4.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate msp430 0.4.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate msp430 0.4.1
[INFO] finished tweaking crates.io crate msp430 0.4.1
[INFO] tweaked toml for crates.io crate msp430 0.4.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate msp430 0.4.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9663a9a78a116817a121fc612c4537e6d987a350d0ae3320af9aa7f9bb4ca845
[INFO] running `Command { std: "docker" "start" "-a" "9663a9a78a116817a121fc612c4537e6d987a350d0ae3320af9aa7f9bb4ca845", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9663a9a78a116817a121fc612c4537e6d987a350d0ae3320af9aa7f9bb4ca845", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9663a9a78a116817a121fc612c4537e6d987a350d0ae3320af9aa7f9bb4ca845", kill_on_drop: false }`
[INFO] [stdout] 9663a9a78a116817a121fc612c4537e6d987a350d0ae3320af9aa7f9bb4ca845
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] beb48fd60bcf98a7b8b5a00223925ef554a868d3ccab3c8c65431ae36152cb6f
[INFO] running `Command { std: "docker" "start" "-a" "beb48fd60bcf98a7b8b5a00223925ef554a868d3ccab3c8c65431ae36152cb6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling critical-section v1.2.0
[INFO] [stderr]    Compiling msp430 v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(asm_experimental_arch)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::asm`
[INFO] [stdout]  --> src/interrupt.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::asm;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]   --> src/register/pc.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |         asm!("mov R0, {0}", out(reg) r, options(nomem, nostack, preserves_flags));
[INFO] [stdout]    |                       ^^^            - for this argument
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `{0:x}` to have the register formatted as `ax` (for 16-bit values)
[INFO] [stdout]    = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout]    = note: `#[warn(asm_sub_register)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]   --> src/register/sp.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 |         asm!("mov R1, {0}", out(reg) r, options(nomem, nostack, preserves_flags));
[INFO] [stdout]    |                       ^^^            - for this argument
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `{0:x}` to have the register formatted as `ax` (for 16-bit values)
[INFO] [stdout]    = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]   --> src/register/sr.rs:83:23
[INFO] [stdout]    |
[INFO] [stdout] 83 |         asm!("mov R2, {0}", out(reg) r, options(nomem, nostack, preserves_flags));
[INFO] [stdout]    |                       ^^^            - for this argument
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `{0:x}` to have the register formatted as `ax` (for 16-bit values)
[INFO] [stdout]    = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `msp430` (lib) due to 1 previous error; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "beb48fd60bcf98a7b8b5a00223925ef554a868d3ccab3c8c65431ae36152cb6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beb48fd60bcf98a7b8b5a00223925ef554a868d3ccab3c8c65431ae36152cb6f", kill_on_drop: false }`
[INFO] [stdout] beb48fd60bcf98a7b8b5a00223925ef554a868d3ccab3c8c65431ae36152cb6f