[INFO] fetching crate serde-version 0.5.1...
[INFO] testing serde-version-0.5.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate serde-version 0.5.1 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate serde-version 0.5.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-version 0.5.1
[INFO] finished tweaking crates.io crate serde-version 0.5.1
[INFO] tweaked toml for crates.io crate serde-version 0.5.1 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] crate crates.io crate serde-version 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.103
[INFO] [stderr]   Downloaded serde v1.0.103
[INFO] [stderr]   Downloaded quickcheck v0.8.5
[INFO] [stderr]   Downloaded serde_test v1.0.103
[INFO] [stderr]   Downloaded ron v0.5.1
[INFO] [stderr]   Downloaded toml v0.5.5
[INFO] [stderr]   Downloaded type-name v0.1.0
[INFO] [stderr]   Downloaded quickcheck_macros v0.8.0
[INFO] [stderr]   Downloaded serde_version_derive v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a340121d82a0e3f03f050facdb0a65263adfbe66ec7566db5086474b341f9c9e
[INFO] running `Command { std: "docker" "start" "-a" "a340121d82a0e3f03f050facdb0a65263adfbe66ec7566db5086474b341f9c9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a340121d82a0e3f03f050facdb0a65263adfbe66ec7566db5086474b341f9c9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a340121d82a0e3f03f050facdb0a65263adfbe66ec7566db5086474b341f9c9e", kill_on_drop: false }`
[INFO] [stdout] a340121d82a0e3f03f050facdb0a65263adfbe66ec7566db5086474b341f9c9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0869d04c6d4718979a786ce47c895f700dff896c65b84c0826da76b52500a99f
[INFO] running `Command { std: "docker" "start" "-a" "0869d04c6d4718979a786ce47c895f700dff896c65b84c0826da76b52500a99f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling type-name v0.1.0
[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/type-name-0.1.0/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(core_intrinsics)]
[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 `type-name` 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" "0869d04c6d4718979a786ce47c895f700dff896c65b84c0826da76b52500a99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0869d04c6d4718979a786ce47c895f700dff896c65b84c0826da76b52500a99f", kill_on_drop: false }`
[INFO] [stdout] 0869d04c6d4718979a786ce47c895f700dff896c65b84c0826da76b52500a99f