[INFO] fetching crate mips-mcu-alloc 0.6.1...
[INFO] testing mips-mcu-alloc-0.6.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate mips-mcu-alloc 0.6.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate mips-mcu-alloc 0.6.1 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] started tweaking crates.io crate mips-mcu-alloc 0.6.1
[INFO] finished tweaking crates.io crate mips-mcu-alloc 0.6.1
[INFO] tweaked toml for crates.io crate mips-mcu-alloc 0.6.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded mips-rt-macros v0.3.4
[INFO] [stderr]   Downloaded mips-mcu v0.3.1
[INFO] [stderr]   Downloaded mips-rt v0.3.5
[INFO] [stderr]   Downloaded linked_list_allocator v0.10.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 93cb7e218bc7393ea4258bb0ef7f2e3bf63d6afe36cbccdcf779ba42bc58718c
[INFO] running `Command { std: "docker" "start" "-a" "93cb7e218bc7393ea4258bb0ef7f2e3bf63d6afe36cbccdcf779ba42bc58718c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93cb7e218bc7393ea4258bb0ef7f2e3bf63d6afe36cbccdcf779ba42bc58718c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93cb7e218bc7393ea4258bb0ef7f2e3bf63d6afe36cbccdcf779ba42bc58718c", kill_on_drop: false }`
[INFO] [stdout] 93cb7e218bc7393ea4258bb0ef7f2e3bf63d6afe36cbccdcf779ba42bc58718c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 19b2f0ebab634330dfa2e1b1b06dc28f3efebbf4722767763096453e114a3b0b
[INFO] running `Command { std: "docker" "start" "-a" "19b2f0ebab634330dfa2e1b1b06dc28f3efebbf4722767763096453e114a3b0b", kill_on_drop: false }`
[INFO] [stderr]    Compiling mips-mcu v0.3.1
[INFO] [stderr]    Compiling mips-rt v0.3.5
[INFO] [stderr]    Compiling critical-section v1.1.2
[INFO] [stderr]    Compiling linked_list_allocator v0.10.5
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling mips-rt-macros v0.3.4
[INFO] [stderr]    Compiling mips-mcu-alloc v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | #![feature(asm_experimental_arch)]
[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 `mips-mcu-alloc` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "19b2f0ebab634330dfa2e1b1b06dc28f3efebbf4722767763096453e114a3b0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19b2f0ebab634330dfa2e1b1b06dc28f3efebbf4722767763096453e114a3b0b", kill_on_drop: false }`
[INFO] [stdout] 19b2f0ebab634330dfa2e1b1b06dc28f3efebbf4722767763096453e114a3b0b
