[INFO] fetching crate platform-treesmethods 0.1.0-aplha.2...
[INFO] testing platform-treesmethods-0.1.0-aplha.2 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate platform-treesmethods 0.1.0-aplha.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate platform-treesmethods 0.1.0-aplha.2
[INFO] finished tweaking crates.io crate platform-treesmethods 0.1.0-aplha.2
[INFO] tweaked toml for crates.io crate platform-treesmethods 0.1.0-aplha.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate platform-treesmethods 0.1.0-aplha.2 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to highest compatible versions
[INFO] [stderr]       Adding platform-num v0.1.0-aplha.1 (available: v0.8.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded platform-num v0.1.0-aplha.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] cc3bf5e5516533f6e3b787f7140495d1c85ec69df0c63f3c9baf1fe17e5f0fca
[INFO] running `Command { std: "docker" "start" "cc3bf5e5516533f6e3b787f7140495d1c85ec69df0c63f3c9baf1fe17e5f0fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc3bf5e5516533f6e3b787f7140495d1c85ec69df0c63f3c9baf1fe17e5f0fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cc3bf5e5516533f6e3b787f7140495d1c85ec69df0c63f3c9baf1fe17e5f0fca" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc3bf5e5516533f6e3b787f7140495d1c85ec69df0c63f3c9baf1fe17e5f0fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cc3bf5e5516533f6e3b787f7140495d1c85ec69df0c63f3c9baf1fe17e5f0fca" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling platform-num v0.1.0-aplha.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta 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] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `platform-num` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "cc3bf5e5516533f6e3b787f7140495d1c85ec69df0c63f3c9baf1fe17e5f0fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc3bf5e5516533f6e3b787f7140495d1c85ec69df0c63f3c9baf1fe17e5f0fca", kill_on_drop: false }`
[INFO] [stdout] cc3bf5e5516533f6e3b787f7140495d1c85ec69df0c63f3c9baf1fe17e5f0fca
