[INFO] updating cached repository k-masatany/rusternel
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/k-masatany/rusternel
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/k-masatany/rusternel" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/k-masatany/rusternel"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/k-masatany/rusternel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/k-masatany/rusternel" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/k-masatany/rusternel"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/k-masatany/rusternel'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a333caf68477414af542e28e58849782a5853d72
[INFO] sha for GitHub repo k-masatany/rusternel: a333caf68477414af542e28e58849782a5853d72
[INFO] validating manifest of k-masatany/rusternel on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of k-masatany/rusternel on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing k-masatany/rusternel
[INFO] finished frobbing k-masatany/rusternel
[INFO] frobbed toml for k-masatany/rusternel written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/k-masatany/rusternel/Cargo.toml
[INFO] started frobbing k-masatany/rusternel
[INFO] finished frobbing k-masatany/rusternel
[INFO] frobbed toml for k-masatany/rusternel written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/k-masatany/rusternel/Cargo.toml
[INFO] crate k-masatany/rusternel already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking k-masatany/rusternel against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-7/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/k-masatany/rusternel:/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=forbid" "-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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7162ba0066981d67b451b1e4927552edddf67e415a19b74788ad5f3b1b6ff5c3
[INFO] running `"docker" "start" "-a" "7162ba0066981d67b451b1e4927552edddf67e415a19b74788ad5f3b1b6ff5c3"`
[INFO] [stderr]    Compiling rusternel v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: couldn't read build.rs: 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 `rusternel`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7162ba0066981d67b451b1e4927552edddf67e415a19b74788ad5f3b1b6ff5c3"`
[INFO] running `"docker" "rm" "-f" "7162ba0066981d67b451b1e4927552edddf67e415a19b74788ad5f3b1b6ff5c3"`
[INFO] [stdout] 7162ba0066981d67b451b1e4927552edddf67e415a19b74788ad5f3b1b6ff5c3