[INFO] crate screenruster-saver 0.2.1 is already in cache
[INFO] testing screenruster-saver-0.2.1 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate screenruster-saver 0.2.1 into work/builds/worker-6/source
[INFO] validating manifest of crates.io crate screenruster-saver 0.2.1 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 crates.io crate screenruster-saver 0.2.1
[INFO] finished tweaking crates.io crate screenruster-saver 0.2.1
[INFO] tweaked toml for crates.io crate screenruster-saver 0.2.1 written to work/builds/worker-6/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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] 22799981cb2b3560b39e5237f5fd8a44bcbfe778bc546cc0ac0dd1e761817cb3
[INFO] running `"docker" "start" "-a" "22799981cb2b3560b39e5237f5fd8a44bcbfe778bc546cc0ac0dd1e761817cb3"`
[INFO] [stderr]    Compiling takeable-option v0.4.0
[INFO] [stderr]    Compiling exoquant v0.2.0
[INFO] [stderr]    Compiling x11 v2.18.1
[INFO] [stderr]    Compiling gl_generator v0.11.0
[INFO] [stderr]    Compiling imagefmt v4.0.0
[INFO] [stderr]    Compiling xyz v0.2.1
[INFO] [stderr]    Compiling palette v0.2.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.16
[INFO] [stderr]    Compiling glium v0.25.1
[INFO] [stderr]    Compiling picto v0.4.3
[INFO] [stderr]    Compiling screenruster-saver v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> src/lib.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | #![feature(type_ascription)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'env_logger::Builder::parse': use `parse_filters` instead.
[INFO] [stderr]   --> src/lib.rs:79:12
[INFO] [stderr]    |
[INFO] [stderr] 79 |             builder.parse(&log);
[INFO] [stderr]    |                     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` 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 `screenruster-saver`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "22799981cb2b3560b39e5237f5fd8a44bcbfe778bc546cc0ac0dd1e761817cb3"`
[INFO] running `"docker" "rm" "-f" "22799981cb2b3560b39e5237f5fd8a44bcbfe778bc546cc0ac0dd1e761817cb3"`
[INFO] [stdout] 22799981cb2b3560b39e5237f5fd8a44bcbfe778bc546cc0ac0dd1e761817cb3