[INFO] updating cached repository mfcastellani/towerweb-nubank
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mfcastellani/towerweb-nubank
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mfcastellani/towerweb-nubank" "work/ex/beta-1.38-1/sources/1.37.0/gh/mfcastellani/towerweb-nubank"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mfcastellani/towerweb-nubank'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mfcastellani/towerweb-nubank" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mfcastellani/towerweb-nubank"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mfcastellani/towerweb-nubank'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 309eb785f7dbf16478dbad3fb661e996645a6b9d
[INFO] sha for GitHub repo mfcastellani/towerweb-nubank: 309eb785f7dbf16478dbad3fb661e996645a6b9d
[INFO] validating manifest of mfcastellani/towerweb-nubank on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mfcastellani/towerweb-nubank on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mfcastellani/towerweb-nubank
[INFO] finished frobbing mfcastellani/towerweb-nubank
[INFO] frobbed toml for mfcastellani/towerweb-nubank written to work/ex/beta-1.38-1/sources/1.37.0/gh/mfcastellani/towerweb-nubank/Cargo.toml
[INFO] started frobbing mfcastellani/towerweb-nubank
[INFO] finished frobbing mfcastellani/towerweb-nubank
[INFO] frobbed toml for mfcastellani/towerweb-nubank written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mfcastellani/towerweb-nubank/Cargo.toml
[INFO] crate mfcastellani/towerweb-nubank already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mfcastellani/towerweb-nubank against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mfcastellani/towerweb-nubank:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 1dc5147dd372296b962d352b561ccee9c42712b34155811e78e5b02c126cb018
[INFO] running `"docker" "start" "-a" "1dc5147dd372296b962d352b561ccee9c42712b34155811e78e5b02c126cb018"`
[INFO] [stderr]    Compiling flate2-crc v0.1.1
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling serde_plain v0.3.0
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.21
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling http v0.1.14
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling flate2 v1.0.5
[INFO] [stderr]    Compiling tokio-reactor v0.1.7
[INFO] [stderr]    Compiling tokio-tcp v0.1.2
[INFO] [stderr]    Compiling tokio-uds v0.2.4
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]    Compiling h2 v0.1.13
[INFO] [stderr]    Compiling tokio v0.1.13
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling pest_derive v2.0.1
[INFO] [stderr]    Compiling hyper v0.12.16
[INFO] [stderr]    Compiling handlebars v1.1.0
[INFO] [stderr]    Compiling tower-web-macros v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling tower-web v0.3.3
[INFO] [stderr] error[E0670]: `async fn` is not permitted in the 2015 edition
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tower-web-0.3.3/src/codegen/mod.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     async fn map_ok<T, E>(future: T) -> Result<T::Output, E>
[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 E0670`.
[INFO] [stderr] error: Could not compile `tower-web`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1dc5147dd372296b962d352b561ccee9c42712b34155811e78e5b02c126cb018"`
[INFO] running `"docker" "rm" "-f" "1dc5147dd372296b962d352b561ccee9c42712b34155811e78e5b02c126cb018"`
[INFO] [stdout] 1dc5147dd372296b962d352b561ccee9c42712b34155811e78e5b02c126cb018