[INFO] cloning repository https://github.com/VictorKoenders/smtp_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VictorKoenders/smtp_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVictorKoenders%2Fsmtp_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVictorKoenders%2Fsmtp_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d8e650b67fd883b1a70eaf8d50ddc58f63f1d736
[INFO] testing VictorKoenders/smtp_server against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVictorKoenders%2Fsmtp_server" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VictorKoenders/smtp_server 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 git repo https://github.com/VictorKoenders/smtp_server
[INFO] finished tweaking git repo https://github.com/VictorKoenders/smtp_server
[INFO] tweaked toml for git repo https://github.com/VictorKoenders/smtp_server written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/VictorKoenders/smtp_server 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 futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]   Downloaded futures-channel-preview v0.3.0-alpha.17
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.48
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.48
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.17
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.48
[INFO] [stderr]   Downloaded runtime-native v0.3.0-alpha.5
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.48
[INFO] [stderr]   Downloaded js-sys v0.3.25
[INFO] [stderr]   Downloaded bumpalo v2.5.0
[INFO] [stderr]   Downloaded async-datagram v3.0.0
[INFO] [stderr]   Downloaded rand_chacha v0.2.0
[INFO] [stderr]   Downloaded charset v0.1.2
[INFO] [stderr]   Downloaded backtrace v0.3.33
[INFO] [stderr]   Downloaded mailparse v0.8.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.48
[INFO] [stderr]   Downloaded rent_to_own v0.1.0
[INFO] [stderr]   Downloaded aho-corasick v0.7.4
[INFO] [stderr]   Downloaded tokio-executor v0.1.8
[INFO] [stderr]   Downloaded derive_state_machine_future v0.2.0
[INFO] [stderr]   Downloaded tokio-postgres v0.4.0-rc.3
[INFO] [stderr]   Downloaded block-padding v0.1.4
[INFO] [stderr]   Downloaded sha2 v0.8.0
[INFO] [stderr]   Downloaded dotenv v0.14.1
[INFO] [stderr]   Downloaded tokio-fs v0.1.6
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.15
[INFO] [stderr]   Downloaded md5 v0.6.1
[INFO] [stderr]   Downloaded darling v0.8.6
[INFO] [stderr]   Downloaded darling_core v0.8.6
[INFO] [stderr]   Downloaded runtime v0.3.0-alpha.6
[INFO] [stderr]   Downloaded runtime-raw v0.3.0-alpha.4
[INFO] [stderr]   Downloaded regex-syntax v0.6.10
[INFO] [stderr]   Downloaded darling_macro v0.8.6
[INFO] [stderr]   Downloaded encoding_rs v0.8.17
[INFO] [stderr]   Downloaded libc v0.2.60
[INFO] [stderr]   Downloaded rand v0.7.0
[INFO] [stderr]   Downloaded juliex v0.3.0-alpha.7
[INFO] [stderr]   Downloaded opaque-debug v0.2.2
[INFO] [stderr]   Downloaded postgres-protocol v0.4.1
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.3.25
[INFO] [stderr]   Downloaded postgres v0.16.0-rc.2
[INFO] [stderr]   Downloaded spin v0.5.0
[INFO] [stderr]   Downloaded log v0.4.7
[INFO] [stderr]   Downloaded rand_core v0.5.0
[INFO] [stderr]   Downloaded state_machine_future v0.2.0
[INFO] [stderr]   Downloaded regex v1.2.0
[INFO] [stderr]   Downloaded syn v0.15.40
[INFO] [stderr]   Downloaded async-datagram v2.2.0
[INFO] [stderr]   Downloaded getrandom v0.1.6
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.17
[INFO] [stderr]   Downloaded runtime-attributes v0.3.0-alpha.5
[INFO] [stderr]   Downloaded async-ready v3.0.0
[INFO] [stderr]   Downloaded autocfg v0.1.5
[INFO] [stderr]   Downloaded quoted_printable v0.4.1
[INFO] [stderr]   Downloaded futures-timer v0.2.1
[INFO] [stderr]   Downloaded romio v0.3.0-alpha.9
[INFO] [stderr]   Downloaded futures-preview v0.3.0-alpha.17
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.48
[INFO] [stderr]   Downloaded futures-io-preview v0.3.0-alpha.17
[INFO] [stderr]   Downloaded futures-executor-preview v0.3.0-alpha.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8b3704dda5a8ee33d1468a7444fd3d46337ee0f852a6b265fbfaa2e2b35521ff
[INFO] running `Command { std: "docker" "start" "-a" "8b3704dda5a8ee33d1468a7444fd3d46337ee0f852a6b265fbfaa2e2b35521ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b3704dda5a8ee33d1468a7444fd3d46337ee0f852a6b265fbfaa2e2b35521ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b3704dda5a8ee33d1468a7444fd3d46337ee0f852a6b265fbfaa2e2b35521ff", kill_on_drop: false }`
[INFO] [stdout] 8b3704dda5a8ee33d1468a7444fd3d46337ee0f852a6b265fbfaa2e2b35521ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 5bee9d88131aaaab4cdaa50a51b46c95f77f8be505f4eccf2e24b910e4a3b6a7
[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" "5bee9d88131aaaab4cdaa50a51b46c95f77f8be505f4eccf2e24b910e4a3b6a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling async-datagram v3.0.0
[INFO] [stderr]    Compiling async-ready v3.0.0
[INFO] [stderr]    Compiling async-datagram v2.2.0
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling rent_to_own v0.1.0
[INFO] [stderr]    Compiling quoted_printable v0.4.1
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling charset v0.1.2
[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/async-datagram-2.2.0/src/lib.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(futures_api)]
[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 `async-datagram` 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" "5bee9d88131aaaab4cdaa50a51b46c95f77f8be505f4eccf2e24b910e4a3b6a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bee9d88131aaaab4cdaa50a51b46c95f77f8be505f4eccf2e24b910e4a3b6a7", kill_on_drop: false }`
[INFO] [stdout] 5bee9d88131aaaab4cdaa50a51b46c95f77f8be505f4eccf2e24b910e4a3b6a7