[INFO] updating cached repository Voidheart88/Rust_lernen
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Voidheart88/Rust_lernen
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Voidheart88/Rust_lernen" "work/ex/beta-1.37-6/sources/1.36.0/gh/Voidheart88/Rust_lernen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Voidheart88/Rust_lernen'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Voidheart88/Rust_lernen" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Voidheart88/Rust_lernen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Voidheart88/Rust_lernen'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b783e4ae0ae53195e3fdf477f8a8df6c7ae89d4c
[INFO] sha for GitHub repo Voidheart88/Rust_lernen: b783e4ae0ae53195e3fdf477f8a8df6c7ae89d4c
[INFO] validating manifest of Voidheart88/Rust_lernen on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Voidheart88/Rust_lernen on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Voidheart88/Rust_lernen
[INFO] finished frobbing Voidheart88/Rust_lernen
[INFO] frobbed toml for Voidheart88/Rust_lernen written to work/ex/beta-1.37-6/sources/1.36.0/gh/Voidheart88/Rust_lernen/Cargo.toml
[INFO] started frobbing Voidheart88/Rust_lernen
[INFO] finished frobbing Voidheart88/Rust_lernen
[INFO] frobbed toml for Voidheart88/Rust_lernen written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Voidheart88/Rust_lernen/Cargo.toml
[INFO] crate Voidheart88/Rust_lernen already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Voidheart88/Rust_lernen against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Voidheart88/Rust_lernen:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 62ef3801fbff9a140d669121685761089023f6e2f1aafe70533a4fe674980f2d
[INFO] running `"docker" "start" "-a" "62ef3801fbff9a140d669121685761089023f6e2f1aafe70533a4fe674980f2d"`
[INFO] [stderr] warning: unused manifest key: package.Workspace
[INFO] [stderr]    Compiling rust_lernen v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] error: couldn't read src/bin/rust_lernen.exe: No such file or directory (os error 2)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_lernen`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "62ef3801fbff9a140d669121685761089023f6e2f1aafe70533a4fe674980f2d"`
[INFO] running `"docker" "rm" "-f" "62ef3801fbff9a140d669121685761089023f6e2f1aafe70533a4fe674980f2d"`
[INFO] [stdout] 62ef3801fbff9a140d669121685761089023f6e2f1aafe70533a4fe674980f2d