[INFO] fetching crate doh-client 2.2.0...
[INFO] testing doh-client-2.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate doh-client 2.2.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate doh-client 2.2.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate doh-client 2.2.0
[INFO] finished tweaking crates.io crate doh-client 2.2.0
[INFO] tweaked toml for crates.io crate doh-client 2.2.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate doh-client 2.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-derive v0.3.0
[INFO] [stderr]   Downloaded tokio-socks v0.2.2
[INFO] [stderr]   Downloaded pin-project v0.4.14
[INFO] [stderr]   Downloaded tokio v0.2.20
[INFO] [stderr]   Downloaded pin-project-internal v0.4.14
[INFO] [stderr]   Downloaded dns-message-parser v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46b5909973258d258c0537a5d3d9740eca7325fc8a7d7cc7d346ec67880e15f9
[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" "46b5909973258d258c0537a5d3d9740eca7325fc8a7d7cc7d346ec67880e15f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46b5909973258d258c0537a5d3d9740eca7325fc8a7d7cc7d346ec67880e15f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46b5909973258d258c0537a5d3d9740eca7325fc8a7d7cc7d346ec67880e15f9", kill_on_drop: false }`
[INFO] [stdout] 46b5909973258d258c0537a5d3d9740eca7325fc8a7d7cc7d346ec67880e15f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 512651fd9d80a352b6ce3807e0f9bc81ab5bf2fd09063f09a31d9ff4bb876372
[INFO] running `Command { std: "docker" "start" "-a" "512651fd9d80a352b6ce3807e0f9bc81ab5bf2fd09063f09a31d9ff4bb876372", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling once_cell v1.3.1
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling pin-project-lite v0.1.5
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling base64 v0.12.1
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling ring v0.16.13
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling const-random v0.1.8
[INFO] [stderr]    Compiling ahash v0.2.18
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling lru v0.4.3
[INFO] [stderr]    Compiling webpki v0.21.2
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling rustls v0.16.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.14
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling thiserror-impl v1.0.16
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling tokio v0.2.20
[INFO] [stderr]    Compiling thiserror v1.0.16
[INFO] [stderr]    Compiling getset v0.1.0
[INFO] [stderr]    Compiling pin-project v0.4.14
[INFO] [stderr]    Compiling dns-message-parser v0.2.0
[INFO] [stderr]    Compiling futures-util v0.3.5
[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/dns-message-parser-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(str_strip)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dns-message-parser`
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "512651fd9d80a352b6ce3807e0f9bc81ab5bf2fd09063f09a31d9ff4bb876372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512651fd9d80a352b6ce3807e0f9bc81ab5bf2fd09063f09a31d9ff4bb876372", kill_on_drop: false }`
[INFO] [stdout] 512651fd9d80a352b6ce3807e0f9bc81ab5bf2fd09063f09a31d9ff4bb876372