[INFO] fetching crate simdnbt 0.3.0...
[INFO] testing simdnbt-0.3.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate simdnbt 0.3.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate simdnbt 0.3.0 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] started tweaking crates.io crate simdnbt 0.3.0
[INFO] finished tweaking crates.io crate simdnbt 0.3.0
[INFO] tweaked toml for crates.io crate simdnbt 0.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate simdnbt 0.3.0 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 hematite-nbt v0.5.2
[INFO] [stderr]   Downloaded residua-mutf8 v2.0.0
[INFO] [stderr]   Downloaded simdnbt-derive v0.3.0
[INFO] [stderr]   Downloaded graphite_binary v0.1.0
[INFO] [stderr]   Downloaded fastnbt v2.4.4
[INFO] [stderr]   Downloaded residua-cesu8 v2.0.0
[INFO] [stderr]   Downloaded graphite_binary_macros v0.1.0
[INFO] [stderr]   Downloaded valence_nbt v0.8.0
[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] 5d374cdeed2f344bca9fff104217e60af6d4ea95af356ef0980dd689bbca5144
[INFO] running `Command { std: "docker" "start" "-a" "5d374cdeed2f344bca9fff104217e60af6d4ea95af356ef0980dd689bbca5144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d374cdeed2f344bca9fff104217e60af6d4ea95af356ef0980dd689bbca5144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d374cdeed2f344bca9fff104217e60af6d4ea95af356ef0980dd689bbca5144", kill_on_drop: false }`
[INFO] [stdout] 5d374cdeed2f344bca9fff104217e60af6d4ea95af356ef0980dd689bbca5144
[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] 993546a2d3c580c98904ed0582fbcb4444485545be0b9a31473c586ae926961a
[INFO] running `Command { std: "docker" "start" "-a" "993546a2d3c580c98904ed0582fbcb4444485545be0b9a31473c586ae926961a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]    Compiling residua-cesu8 v2.0.0
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]    Compiling residua-mutf8 v2.0.0
[INFO] [stderr]    Compiling flate2 v1.0.28
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling simdnbt-derive v0.3.0
[INFO] [stderr]    Compiling simdnbt v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(portable_simd)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(array_chunks)]
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(split_array)]
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `simdnbt` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "993546a2d3c580c98904ed0582fbcb4444485545be0b9a31473c586ae926961a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "993546a2d3c580c98904ed0582fbcb4444485545be0b9a31473c586ae926961a", kill_on_drop: false }`
[INFO] [stdout] 993546a2d3c580c98904ed0582fbcb4444485545be0b9a31473c586ae926961a
