[INFO] fetching crate tld 2.24.0...
[INFO] testing tld-2.24.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate tld 2.24.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate tld 2.24.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tld 2.24.0
[INFO] finished tweaking crates.io crate tld 2.24.0
[INFO] tweaked toml for crates.io crate tld 2.24.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded phf_codegen v0.9.0
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03abc791d5190c1c5c62bd284ac759adc8bb98e55c575a0d6314c1bf256857d0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "03abc791d5190c1c5c62bd284ac759adc8bb98e55c575a0d6314c1bf256857d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03abc791d5190c1c5c62bd284ac759adc8bb98e55c575a0d6314c1bf256857d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03abc791d5190c1c5c62bd284ac759adc8bb98e55c575a0d6314c1bf256857d0", kill_on_drop: false }`
[INFO] [stdout] 03abc791d5190c1c5c62bd284ac759adc8bb98e55c575a0d6314c1bf256857d0
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f5eeef5292cb09240b95cd5b65c988ce2fed09236085404b9b556276ed9b3269
[INFO] running `Command { std: "docker" "start" "-a" "f5eeef5292cb09240b95cd5b65c988ce2fed09236085404b9b556276ed9b3269", kill_on_drop: false }`
[INFO] [stderr]    Compiling phf_shared v0.9.0
[INFO] [stderr]    Compiling phf_generator v0.9.1
[INFO] [stderr]    Compiling phf v0.9.0
[INFO] [stderr]    Compiling phf_codegen v0.9.0
[INFO] [stderr]    Compiling tld v2.24.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin)]
[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 `tld` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f5eeef5292cb09240b95cd5b65c988ce2fed09236085404b9b556276ed9b3269", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5eeef5292cb09240b95cd5b65c988ce2fed09236085404b9b556276ed9b3269", kill_on_drop: false }`
[INFO] [stdout] f5eeef5292cb09240b95cd5b65c988ce2fed09236085404b9b556276ed9b3269