[INFO] fetching crate rational_deduction 0.0.5...
[INFO] testing rational_deduction-0.0.5 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate rational_deduction 0.0.5 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rational_deduction 0.0.5 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 rational_deduction 0.0.5
[INFO] finished tweaking crates.io crate rational_deduction 0.0.5
[INFO] tweaked toml for crates.io crate rational_deduction 0.0.5 written to /workspace/builds/worker-7/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitvec v0.21.2
[INFO] [stderr]   Downloaded exprz v0.0.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 8bba6463339847256ae3aac730f3914283716e4af31e52c1fb4e62fd0fbcae3a
[INFO] running `Command { std: "docker" "start" "-a" "8bba6463339847256ae3aac730f3914283716e4af31e52c1fb4e62fd0fbcae3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bba6463339847256ae3aac730f3914283716e4af31e52c1fb4e62fd0fbcae3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bba6463339847256ae3aac730f3914283716e4af31e52c1fb4e62fd0fbcae3a", kill_on_drop: false }`
[INFO] [stdout] 8bba6463339847256ae3aac730f3914283716e4af31e52c1fb4e62fd0fbcae3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] d7d00b74c72e914fbb37909f891a0d2b72a83a84de0d88a229acbbd9847b8ea2
[INFO] running `Command { std: "docker" "start" "-a" "d7d00b74c72e914fbb37909f891a0d2b72a83a84de0d88a229acbbd9847b8ea2", kill_on_drop: false }`
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling funty v1.2.0
[INFO] [stderr]    Compiling exprz v0.0.12
[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/exprz-0.0.12/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(generic_associated_types)]
[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 `exprz` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d7d00b74c72e914fbb37909f891a0d2b72a83a84de0d88a229acbbd9847b8ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7d00b74c72e914fbb37909f891a0d2b72a83a84de0d88a229acbbd9847b8ea2", kill_on_drop: false }`
[INFO] [stdout] d7d00b74c72e914fbb37909f891a0d2b72a83a84de0d88a229acbbd9847b8ea2
