[INFO] fetching crate json-ld 0.6.1...
[INFO] testing json-ld-0.6.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate json-ld 0.6.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate json-ld 0.6.1 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 json-ld 0.6.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate json-ld 0.6.1
[INFO] tweaked toml for crates.io crate json-ld 0.6.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate json-ld 0.6.1 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 stderrlog v0.5.1
[INFO] [stderr]   Downloaded mown v0.2.1
[INFO] [stderr]   Downloaded pct-str v1.1.0
[INFO] [stderr]   Downloaded iref v1.4.3
[INFO] [stderr]   Downloaded langtag v0.2.0
[INFO] [stderr]   Downloaded gloo-timers v0.2.2
[INFO] [stderr]   Downloaded cc-traits v0.7.3
[INFO] [stderr]   Downloaded iref-enum v1.2.0
[INFO] [stderr]   Downloaded static-iref v1.0.0
[INFO] [stderr]   Downloaded iref v2.1.0
[INFO] [stderr]   Downloaded generic-json v0.7.0
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce62326e5a45fe2a36de2c154fdeee0a40cb0d0e517bc330b9fb6587ad424cf6
[INFO] running `Command { std: "docker" "start" "-a" "ce62326e5a45fe2a36de2c154fdeee0a40cb0d0e517bc330b9fb6587ad424cf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce62326e5a45fe2a36de2c154fdeee0a40cb0d0e517bc330b9fb6587ad424cf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce62326e5a45fe2a36de2c154fdeee0a40cb0d0e517bc330b9fb6587ad424cf6", kill_on_drop: false }`
[INFO] [stdout] ce62326e5a45fe2a36de2c154fdeee0a40cb0d0e517bc330b9fb6587ad424cf6
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06231c19bb7b91b9e9b507ea5d857bd4adb272e4f6936ce18bfb2e30dda30fd1
[INFO] running `Command { std: "docker" "start" "-a" "06231c19bb7b91b9e9b507ea5d857bd4adb272e4f6936ce18bfb2e30dda30fd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling futures-sink v0.3.19
[INFO] [stderr]    Compiling futures-io v0.3.19
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling pct-str v1.1.0
[INFO] [stderr]    Compiling mown v0.2.1
[INFO] [stderr]    Compiling langtag v0.2.0
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.8
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling iref v2.1.0
[INFO] [stderr]    Compiling serde_json v1.0.74
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "06231c19bb7b91b9e9b507ea5d857bd4adb272e4f6936ce18bfb2e30dda30fd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06231c19bb7b91b9e9b507ea5d857bd4adb272e4f6936ce18bfb2e30dda30fd1", kill_on_drop: false }`
[INFO] [stdout] 06231c19bb7b91b9e9b507ea5d857bd4adb272e4f6936ce18bfb2e30dda30fd1