[INFO] fetching crate doublets 0.1.0-pre+beta.15...
[INFO] testing doublets-0.1.0-pre+beta.15 against 1.90.0 for beta-1.91-3
[INFO] extracting crate doublets 0.1.0-pre+beta.15 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate doublets 0.1.0-pre+beta.15
[INFO] finished tweaking crates.io crate doublets 0.1.0-pre+beta.15
[INFO] tweaked toml for crates.io crate doublets 0.1.0-pre+beta.15 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate doublets 0.1.0-pre+beta.15 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 94 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[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] [stderr] warning: version requirement `0.1.0-pre+beta.2` for dependency `mem` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded leak_slice v0.2.0
[INFO] [stderr]   Downloaded platform-treesmethods v0.1.0-aplha.2
[INFO] [stderr]   Downloaded platform-mem v0.1.0-pre+beta.2
[INFO] [stderr]   Downloaded platform-data v0.1.0-beta.3
[INFO] [stderr]   Downloaded platform-num v0.1.0-aplha.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 709add628042f600e9c3e25cc4cf952872beaa0075b11ea53e830d3fa50a2b98
[INFO] running `Command { std: "docker" "start" "-a" "709add628042f600e9c3e25cc4cf952872beaa0075b11ea53e830d3fa50a2b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "709add628042f600e9c3e25cc4cf952872beaa0075b11ea53e830d3fa50a2b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "709add628042f600e9c3e25cc4cf952872beaa0075b11ea53e830d3fa50a2b98", kill_on_drop: false }`
[INFO] [stdout] 709add628042f600e9c3e25cc4cf952872beaa0075b11ea53e830d3fa50a2b98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 604e698c9039a3f4b917a920970a0b79de4211bf86d1abde3b5b00f07dc642d2
[INFO] running `Command { std: "docker" "start" "-a" "604e698c9039a3f4b917a920970a0b79de4211bf86d1abde3b5b00f07dc642d2", kill_on_drop: false }`
[INFO] [stderr] warning: version requirement `0.1.0-pre+beta.2` for dependency `mem` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling platform-num v0.1.0-aplha.1
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling memmap2 v0.5.10
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/platform-num-0.1.0-aplha.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(step_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[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/index.crates.io-1949cf8c6b5b557f/platform-num-0.1.0-aplha.1/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `platform-num` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "604e698c9039a3f4b917a920970a0b79de4211bf86d1abde3b5b00f07dc642d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "604e698c9039a3f4b917a920970a0b79de4211bf86d1abde3b5b00f07dc642d2", kill_on_drop: false }`
[INFO] [stdout] 604e698c9039a3f4b917a920970a0b79de4211bf86d1abde3b5b00f07dc642d2