[INFO] cloning repository https://github.com/mehcode/transmit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mehcode/transmit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmehcode%2Ftransmit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmehcode%2Ftransmit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fbd3b79da1db675560b3249370f70a4dd5112e4f
[INFO] testing mehcode/transmit 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%2Fmehcode%2Ftransmit" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mehcode/transmit 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/mehcode/transmit
[INFO] finished tweaking git repo https://github.com/mehcode/transmit
[INFO] tweaked toml for git repo https://github.com/mehcode/transmit written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/mehcode/transmit 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] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr] warning: the cargo feature `rename-dependency` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot v0.6.3
[INFO] [stderr]   Downloaded parking_lot_core v0.2.14
[INFO] [stderr]   Downloaded proc-macro2 v0.4.15
[INFO] [stderr]   Downloaded tokio-channel v0.1.0
[INFO] [stderr]   Downloaded hyper v0.12.9
[INFO] [stderr]   Downloaded futures-preview v0.3.0-alpha.3
[INFO] [stderr]   Downloaded futures-io-preview v0.3.0-alpha.3
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.3
[INFO] [stderr]   Downloaded futures-executor-preview v0.3.0-alpha.3
[INFO] [stderr]   Downloaded futures-channel-preview v0.3.0-alpha.3
[INFO] [stderr]   Downloaded http v0.1.10
[INFO] [stderr]   Downloaded pin-utils v0.1.0-alpha.1
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.3
[INFO] [stderr]   Downloaded tokio-async-await v0.1.1
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 87f0326dbe1ba08ddc26e61047844dbaaaf258d7537b1975aaa8ff53fdc06f8d
[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" "87f0326dbe1ba08ddc26e61047844dbaaaf258d7537b1975aaa8ff53fdc06f8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87f0326dbe1ba08ddc26e61047844dbaaaf258d7537b1975aaa8ff53fdc06f8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87f0326dbe1ba08ddc26e61047844dbaaaf258d7537b1975aaa8ff53fdc06f8d", kill_on_drop: false }`
[INFO] [stdout] 87f0326dbe1ba08ddc26e61047844dbaaaf258d7537b1975aaa8ff53fdc06f8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 7a715856cb4a8e6e238aab5f53c2548621d1726afce57f8edb70eb267386efb8
[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" "7a715856cb4a8e6e238aab5f53c2548621d1726afce57f8edb70eb267386efb8", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr] warning: the cargo feature `rename-dependency` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.15
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.1
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling log v0.4.4
[INFO] [stderr]    Compiling tokio-channel v0.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling http v0.1.10
[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/pin-utils-0.1.0-alpha.1/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(pin)]
[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 `pin-utils`
[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[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-channel-0.1.0/src/lib.rs:3:46
[INFO] [stdout]   |
[INFO] [stdout] 3 |   #![cfg_attr(feature = "async-await-preview", feature(
[INFO] [stdout]   |  ______________________________________________^
[INFO] [stdout] 4 | |         pin,
[INFO] [stdout] 5 | |         ))]
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "7a715856cb4a8e6e238aab5f53c2548621d1726afce57f8edb70eb267386efb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a715856cb4a8e6e238aab5f53c2548621d1726afce57f8edb70eb267386efb8", kill_on_drop: false }`
[INFO] [stdout] 7a715856cb4a8e6e238aab5f53c2548621d1726afce57f8edb70eb267386efb8