[INFO] cloning repository https://github.com/gyng/datarouter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gyng/datarouter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Fdatarouter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Fdatarouter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5075c6a1bd9975cdf5536d9aae0f090db80b3085
[INFO] testing gyng/datarouter against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgyng%2Fdatarouter" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gyng/datarouter 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 git repo https://github.com/gyng/datarouter
[INFO] finished tweaking git repo https://github.com/gyng/datarouter
[INFO] tweaked toml for git repo https://github.com/gyng/datarouter written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/gyng/datarouter 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-complex v0.1.39
[INFO] [stderr]   Downloaded md5 v0.3.5
[INFO] [stderr]   Downloaded tokio-core v0.1.8
[INFO] [stderr]   Downloaded digest v0.5.2
[INFO] [stderr]   Downloaded hmac v0.1.1
[INFO] [stderr]   Downloaded byte-tools v0.1.3
[INFO] [stderr]   Downloaded openssl-sys v0.9.14
[INFO] [stderr]   Downloaded smallvec v0.4.1
[INFO] [stderr]   Downloaded yansi v0.3.0
[INFO] [stderr]   Downloaded state v0.3.1
[INFO] [stderr]   Downloaded typenum v1.5.2
[INFO] [stderr]   Downloaded rocket v0.3.0
[INFO] [stderr]   Downloaded rocket_codegen v0.3.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.26
[INFO] [stderr]   Downloaded stringprep v0.1.0
[INFO] [stderr]   Downloaded postgres v0.14.2
[INFO] [stderr]   Downloaded postgres-shared v0.3.0
[INFO] [stderr]   Downloaded untrusted v0.5.0
[INFO] [stderr]   Downloaded hyper v0.10.12
[INFO] [stderr]   Downloaded cookie v0.9.1
[INFO] [stderr]   Downloaded generic-array v0.7.2
[INFO] [stderr]   Downloaded sha2 v0.5.3
[INFO] [stderr]   Downloaded chrono v0.3.0
[INFO] [stderr]   Downloaded crypto-mac v0.3.0
[INFO] [stderr]   Downloaded openssl v0.9.14
[INFO] [stderr]   Downloaded digest-buffer v0.3.1
[INFO] [stderr]   Downloaded constant_time_eq v0.1.2
[INFO] [stderr]   Downloaded postgres-protocol v0.3.0
[INFO] [stderr]   Downloaded idna v0.1.2
[INFO] [stderr]   Downloaded reqwest v0.7.1
[INFO] [stderr]   Downloaded biscuit v0.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] d7f2c9670739af8b4aeee700cd0821e3b8ccfa721f122c8a3418b344223405fc
[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" "d7f2c9670739af8b4aeee700cd0821e3b8ccfa721f122c8a3418b344223405fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7f2c9670739af8b4aeee700cd0821e3b8ccfa721f122c8a3418b344223405fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7f2c9670739af8b4aeee700cd0821e3b8ccfa721f122c8a3418b344223405fc", kill_on_drop: false }`
[INFO] [stdout] d7f2c9670739af8b4aeee700cd0821e3b8ccfa721f122c8a3418b344223405fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] dde485d7d83def10c41c1b4f3cc1d0c5793f1f469f977c526cf63b1aba1929a9
[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" "dde485d7d83def10c41c1b4f3cc1d0c5793f1f469f977c526cf63b1aba1929a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling num-traits v0.1.39
[INFO] [stderr]    Compiling typenum v1.5.2
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling odds v0.2.25
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling futures v0.1.14
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling gcc v0.3.51
[INFO] [stderr]    Compiling serde v1.0.10
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[INFO] [stderr]    Compiling yansi v0.3.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling log v0.3.8
[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/yansi-0.3.0/src/lib.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature="nightly", feature(const_fn))]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yansi`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[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" "dde485d7d83def10c41c1b4f3cc1d0c5793f1f469f977c526cf63b1aba1929a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dde485d7d83def10c41c1b4f3cc1d0c5793f1f469f977c526cf63b1aba1929a9", kill_on_drop: false }`
[INFO] [stdout] dde485d7d83def10c41c1b4f3cc1d0c5793f1f469f977c526cf63b1aba1929a9