[INFO] cloning repository https://github.com/k-nasa/tech_fest_proxy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/k-nasa/tech_fest_proxy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-nasa%2Ftech_fest_proxy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-nasa%2Ftech_fest_proxy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81216fa8ce1a0a32050029605199876e982359dc
[INFO] checking k-nasa/tech_fest_proxy against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-nasa%2Ftech_fest_proxy" "/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/k-nasa/tech_fest_proxy on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/k-nasa/tech_fest_proxy
[INFO] finished tweaking git repo https://github.com/k-nasa/tech_fest_proxy
[INFO] tweaked toml for git repo https://github.com/k-nasa/tech_fest_proxy written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/k-nasa/tech_fest_proxy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66e32c5567ebefb3c04d6c5e544cf6550d9861665b9b1494e5035914ebfa1aca
[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" "66e32c5567ebefb3c04d6c5e544cf6550d9861665b9b1494e5035914ebfa1aca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66e32c5567ebefb3c04d6c5e544cf6550d9861665b9b1494e5035914ebfa1aca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66e32c5567ebefb3c04d6c5e544cf6550d9861665b9b1494e5035914ebfa1aca", kill_on_drop: false }`
[INFO] [stdout] 66e32c5567ebefb3c04d6c5e544cf6550d9861665b9b1494e5035914ebfa1aca
[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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] e26c8cdf82960b51720c5266915031043762c246509256ad02c80faa5c0feed4
[INFO] running `Command { std: "docker" "start" "-a" "e26c8cdf82960b51720c5266915031043762c246509256ad02c80faa5c0feed4", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling serde v1.0.100
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling curl v0.4.23
[INFO] [stderr]     Checking safemem v0.3.2
[INFO] [stderr]     Checking indexmap v1.2.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]    Compiling isahc v0.7.3
[INFO] [stderr]    Compiling unicase v2.5.1
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking tokio-sync v0.1.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]    Compiling hyper v0.12.34
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking sluice v0.4.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling curl-sys v0.4.21
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking http-service v0.3.1
[INFO] [stderr]     Checking multipart v0.16.1
[INFO] [stderr]     Checking http-service-hyper v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_qs v0.5.0
[INFO] [stderr]     Checking tide-core v0.2.0 (https://github.com/rustasync/tide#af0b900b)
[INFO] [stderr]     Checking surf v1.0.2
[INFO] [stderr]     Checking tide-cors v0.2.0 (https://github.com/rustasync/tide#af0b900b)
[INFO] [stderr]     Checking tide-querystring v0.1.0 (https://github.com/rustasync/tide#af0b900b)
[INFO] [stderr]     Checking tide-cookies v0.2.0 (https://github.com/rustasync/tide#af0b900b)
[INFO] [stderr]     Checking tide-forms v0.1.0 (https://github.com/rustasync/tide#af0b900b)
[INFO] [stderr]     Checking tide-headers v0.1.0 (https://github.com/rustasync/tide#af0b900b)
[INFO] [stderr]     Checking tide-log v0.1.0 (https://github.com/rustasync/tide#af0b900b)
[INFO] [stderr]     Checking tide v0.2.0 (https://github.com/rustasync/tide#af0b900b)
[INFO] [stderr]     Checking tech_fest_proxy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[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 `tech_fest_proxy`
[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] [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: build failed
[INFO] running `Command { std: "docker" "inspect" "e26c8cdf82960b51720c5266915031043762c246509256ad02c80faa5c0feed4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e26c8cdf82960b51720c5266915031043762c246509256ad02c80faa5c0feed4", kill_on_drop: false }`
[INFO] [stdout] e26c8cdf82960b51720c5266915031043762c246509256ad02c80faa5c0feed4