[INFO] updating cached repository https://github.com/smolkov/epd24rwb
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d627d9394f5c05cc920f5ca44bc9cce2bd04ef5d
[INFO] testing smolkov/epd24rwb against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmolkov%2Fepd24rwb" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/smolkov/epd24rwb on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/smolkov/epd24rwb
[INFO] finished tweaking git repo https://github.com/smolkov/epd24rwb
[INFO] tweaked toml for git repo https://github.com/smolkov/epd24rwb written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/smolkov/epd24rwb already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] ef4a53c3d6560ba6e471d6969a5382129e524be70f8e9b96e8664cf1ad444f4f
[INFO] running `"docker" "start" "-a" "ef4a53c3d6560ba6e471d6969a5382129e524be70f8e9b96e8664cf1ad444f4f"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling nb v0.1.2
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling paw-raw v1.0.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling async-task v1.0.0
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling rppal v0.11.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling i2cdev v0.4.2
[INFO] [stderr]    Compiling sysfs_gpio v0.5.4
[INFO] [stderr]    Compiling proc-macro-error v0.2.4
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling image v0.22.1
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling embedded-hal v0.2.3
[INFO] [stderr]    Compiling structopt-derive v0.3.0
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling tinybmp v0.1.0
[INFO] [stderr]    Compiling tinytga v0.1.0
[INFO] [stderr]    Compiling qrcode v0.11.0
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling embedded-graphics v0.4.9
[INFO] [stderr]    Compiling spidev v0.3.0
[INFO] [stderr]    Compiling linux-embedded-hal v0.2.2
[INFO] [stderr]    Compiling ssd1675 v0.1.0
[INFO] [stderr]    Compiling profont v0.2.0
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling structopt v0.3.0
[INFO] [stderr]    Compiling futures-timer v0.3.0
[INFO] [stderr]    Compiling async-std v0.99.4
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling async-log-attributes v1.0.1
[INFO] [stderr]    Compiling paw-attributes v1.0.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling paw v1.0.0
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling async-log v2.0.0
[INFO] [stderr]    Compiling epd24rwb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `async_std::prelude::*`
[INFO] [stderr]  --> src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use async_std::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `epd24rwb`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ef4a53c3d6560ba6e471d6969a5382129e524be70f8e9b96e8664cf1ad444f4f"`
[INFO] running `"docker" "rm" "-f" "ef4a53c3d6560ba6e471d6969a5382129e524be70f8e9b96e8664cf1ad444f4f"`
[INFO] [stdout] ef4a53c3d6560ba6e471d6969a5382129e524be70f8e9b96e8664cf1ad444f4f