[INFO] cloning repository https://github.com/ggomagundan/restful_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ggomagundan/restful_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fggomagundan%2Frestful_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fggomagundan%2Frestful_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94c9e3291cf852908a877b5312fb248fd6ac212b
[INFO] testing ggomagundan/restful_example against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fggomagundan%2Frestful_example" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ggomagundan/restful_example 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 git repo https://github.com/ggomagundan/restful_example
[INFO] finished tweaking git repo https://github.com/ggomagundan/restful_example
[INFO] tweaked toml for git repo https://github.com/ggomagundan/restful_example written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ggomagundan/restful_example already has a lockfile, it will not be regenerated
[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 tokio v0.1.18
[INFO] [stderr]   Downloaded proc-macro-hack v0.4.1
[INFO] [stderr]   Downloaded proc-macro-hack-impl v0.4.1
[INFO] [stderr]   Downloaded serde_derive v1.0.90
[INFO] [stderr]   Downloaded mime_guess v1.8.6
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.5
[INFO] [stderr]   Downloaded dotenv_codegen_impl v0.1.0
[INFO] [stderr]   Downloaded dotenv_codegen v0.11.0
[INFO] [stderr]   Downloaded hyper v0.12.27
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.13
[INFO] [stderr]   Downloaded buf_redux v0.8.1
[INFO] [stderr]   Downloaded syn v0.15.32
[INFO] [stderr]   Downloaded slog-term v2.4.0
[INFO] [stderr]   Downloaded multipart v0.15.4
[INFO] [stderr]   Downloaded route-recognizer v0.1.12
[INFO] [stderr]   Downloaded data-encoding v2.1.2
[INFO] [stderr]   Downloaded slog-async v2.3.0
[INFO] [stderr]   Downloaded cc v1.0.35
[INFO] [stderr]   Downloaded h2 v0.1.18
[INFO] [stderr]   Downloaded libc v0.2.51
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded http-service v0.1.5
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded http-service-hyper v0.1.1
[INFO] [stderr]   Downloaded futures-io-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded futures-executor-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded futures-select-macro-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded serde_qs v0.4.5
[INFO] [stderr]   Downloaded tide v0.1.1
[INFO] [stderr]   Downloaded futures-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded futures-channel-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4a1db692a0d4eefd804ee9926c67f128ec21d4996786d73642387048ed1d6430
[INFO] running `Command { std: "docker" "start" "-a" "4a1db692a0d4eefd804ee9926c67f128ec21d4996786d73642387048ed1d6430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a1db692a0d4eefd804ee9926c67f128ec21d4996786d73642387048ed1d6430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a1db692a0d4eefd804ee9926c67f128ec21d4996786d73642387048ed1d6430", kill_on_drop: false }`
[INFO] [stdout] 4a1db692a0d4eefd804ee9926c67f128ec21d4996786d73642387048ed1d6430
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 6b3fd5a0be056b907c9b7a9bbf822316d45f58ab18c9a8016846e64ac8eb0e3d
[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" "6b3fd5a0be056b907c9b7a9bbf822316d45f58ab18c9a8016846e64ac8eb0e3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling proc-macro-hack v0.4.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling twoway v0.1.8
[INFO] [stderr]    Compiling buf_redux v0.8.1
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling cookie v0.11.0
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.14
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[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/futures-core-preview-0.3.0-alpha.14/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(futures_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[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 `futures-core-preview` 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" "6b3fd5a0be056b907c9b7a9bbf822316d45f58ab18c9a8016846e64ac8eb0e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b3fd5a0be056b907c9b7a9bbf822316d45f58ab18c9a8016846e64ac8eb0e3d", kill_on_drop: false }`
[INFO] [stdout] 6b3fd5a0be056b907c9b7a9bbf822316d45f58ab18c9a8016846e64ac8eb0e3d