[INFO] updating cached repository https://github.com/averycrespi/yolk-web
[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] c6bdd66d070db81b276d70b3206ddaf0128955c3
[INFO] testing averycrespi/yolk-web against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Faverycrespi%2Fyolk-web" "work/builds/worker-9/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/averycrespi/yolk-web 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/averycrespi/yolk-web
[INFO] finished tweaking git repo https://github.com/averycrespi/yolk-web
[INFO] tweaked toml for git repo https://github.com/averycrespi/yolk-web written to work/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/averycrespi/yolk-web 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-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/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] 56f7b45820fe87fee63b07056040d604b464a4a88b0470e6c9bfc1eb52e56ec8
[INFO] running `"docker" "start" "-a" "56f7b45820fe87fee63b07056040d604b464a4a88b0470e6c9bfc1eb52e56ec8"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling serde v1.0.100
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.4
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling base-x v0.2.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]    Compiling discard v1.0.4
[INFO] [stderr]    Compiling yew v0.8.0
[INFO] [stderr]    Compiling anymap v0.12.1
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libgit2-sys v0.9.0
[INFO] [stderr]    Compiling yew-macro v0.8.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling stdweb v0.4.18
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling backtrace v0.3.37
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]    Compiling http v0.1.18
[INFO] [stderr]    Compiling chrono v0.4.9
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]    Compiling proc-macro-hack v0.5.9
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling toml v0.5.3
[INFO] [stderr]    Compiling yolol_number v0.7.0
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling yolol_number v0.6.2
[INFO] [stderr]    Compiling stdweb-derive v0.5.1
[INFO] [stderr]    Compiling git2 v0.10.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yolol_number-0.7.0/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(trait_alias)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yolol_number-0.6.2/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(trait_alias)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[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 `yolol_number`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `yolol_number`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "56f7b45820fe87fee63b07056040d604b464a4a88b0470e6c9bfc1eb52e56ec8"`
[INFO] running `"docker" "rm" "-f" "56f7b45820fe87fee63b07056040d604b464a4a88b0470e6c9bfc1eb52e56ec8"`
[INFO] [stdout] 56f7b45820fe87fee63b07056040d604b464a4a88b0470e6c9bfc1eb52e56ec8