[INFO] fetching crate generic-json 0.7.0...
[INFO] testing generic-json-0.7.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate generic-json 0.7.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate generic-json 0.7.0 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 generic-json 0.7.0
[INFO] finished tweaking crates.io crate generic-json 0.7.0
[INFO] tweaked toml for crates.io crate generic-json 0.7.0 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallstr v0.2.0
[INFO] [stderr]   Downloaded cc-traits v0.7.3
[INFO] [stderr]   Downloaded ijson v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 1513b5fb3f6ee1a9356be27345139011c4d71298f24dd8dad15c572b2c4a9a6e
[INFO] running `Command { std: "docker" "start" "-a" "1513b5fb3f6ee1a9356be27345139011c4d71298f24dd8dad15c572b2c4a9a6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1513b5fb3f6ee1a9356be27345139011c4d71298f24dd8dad15c572b2c4a9a6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1513b5fb3f6ee1a9356be27345139011c4d71298f24dd8dad15c572b2c4a9a6e", kill_on_drop: false }`
[INFO] [stdout] 1513b5fb3f6ee1a9356be27345139011c4d71298f24dd8dad15c572b2c4a9a6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 6f8e2982fa8d1eeafedaa6d0c44b50ab8c803a2f6c461a9800e4ad322db76d28
[INFO] running `Command { std: "docker" "start" "-a" "6f8e2982fa8d1eeafedaa6d0c44b50ab8c803a2f6c461a9800e4ad322db76d28", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc-traits v0.7.3
[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/cc-traits-0.7.3/src/lib.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | #![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 `cc-traits` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6f8e2982fa8d1eeafedaa6d0c44b50ab8c803a2f6c461a9800e4ad322db76d28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f8e2982fa8d1eeafedaa6d0c44b50ab8c803a2f6c461a9800e4ad322db76d28", kill_on_drop: false }`
[INFO] [stdout] 6f8e2982fa8d1eeafedaa6d0c44b50ab8c803a2f6c461a9800e4ad322db76d28