[INFO] fetching crate frankencell 0.2.0...
[INFO] testing frankencell-0.2.0 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate frankencell 0.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate frankencell 0.2.0 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate frankencell 0.2.0
[INFO] finished tweaking crates.io crate frankencell 0.2.0
[INFO] tweaked toml for crates.io crate frankencell 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate frankencell 0.2.0 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" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7fad2a14f1b3472b6b6946e26b85c174783a6318179173ec84d425ebdfbe44f
[INFO] running `Command { std: "docker" "start" "-a" "b7fad2a14f1b3472b6b6946e26b85c174783a6318179173ec84d425ebdfbe44f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7fad2a14f1b3472b6b6946e26b85c174783a6318179173ec84d425ebdfbe44f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7fad2a14f1b3472b6b6946e26b85c174783a6318179173ec84d425ebdfbe44f", kill_on_drop: false }`
[INFO] [stdout] b7fad2a14f1b3472b6b6946e26b85c174783a6318179173ec84d425ebdfbe44f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2adf1dd859e57302fee9e51ced5b0647347f5afea15ce0e78b94dcd04274116
[INFO] running `Command { std: "docker" "start" "-a" "f2adf1dd859e57302fee9e51ced5b0647347f5afea15ce0e78b94dcd04274116", kill_on_drop: false }`
[INFO] [stderr]    Compiling frankencell v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generic_const_exprs)]
[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 `frankencell` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f2adf1dd859e57302fee9e51ced5b0647347f5afea15ce0e78b94dcd04274116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2adf1dd859e57302fee9e51ced5b0647347f5afea15ce0e78b94dcd04274116", kill_on_drop: false }`
[INFO] [stdout] f2adf1dd859e57302fee9e51ced5b0647347f5afea15ce0e78b94dcd04274116
