[INFO] fetching crate randen 0.0.0...
[INFO] testing randen-0.0.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate randen 0.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate randen 0.0.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate randen 0.0.0
[INFO] finished tweaking crates.io crate randen 0.0.0
[INFO] tweaked toml for crates.io crate randen 0.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a13b7bfc597e1a24f02d1a321d5e8d1ff0c07a1b223b6dcfbc060e3dd9da105
[INFO] running `Command { std: "docker" "start" "-a" "9a13b7bfc597e1a24f02d1a321d5e8d1ff0c07a1b223b6dcfbc060e3dd9da105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a13b7bfc597e1a24f02d1a321d5e8d1ff0c07a1b223b6dcfbc060e3dd9da105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a13b7bfc597e1a24f02d1a321d5e8d1ff0c07a1b223b6dcfbc060e3dd9da105", kill_on_drop: false }`
[INFO] [stdout] 9a13b7bfc597e1a24f02d1a321d5e8d1ff0c07a1b223b6dcfbc060e3dd9da105
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9dd56d4d50edb8d584934eb00ecdeee4de89b0614902407fe3278629b66d3da
[INFO] running `Command { std: "docker" "start" "-a" "d9dd56d4d50edb8d584934eb00ecdeee4de89b0614902407fe3278629b66d3da", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.4.6/src/lib.rs:248:39
[INFO] [stdout]     |
[INFO] [stdout] 248 | #![cfg_attr(feature = "i128_support", feature(i128_type, i128))]
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: the feature `i128_type` has been stable since 1.26.0 and no longer requires an attribute to enable
[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 `rand` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d9dd56d4d50edb8d584934eb00ecdeee4de89b0614902407fe3278629b66d3da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9dd56d4d50edb8d584934eb00ecdeee4de89b0614902407fe3278629b66d3da", kill_on_drop: false }`
[INFO] [stdout] d9dd56d4d50edb8d584934eb00ecdeee4de89b0614902407fe3278629b66d3da
