[INFO] cloning repository k-masatany/rusternel
[INFO] running `"git" "clone" "--bare" "git://github.com/k-masatany/rusternel.git" "work/cache/sources/gh/k-masatany/rusternel"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/k-masatany/rusternel'...
[INFO] running `"git" "clone" "work/cache/sources/gh/k-masatany/rusternel" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/k-masatany/rusternel"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/k-masatany/rusternel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/k-masatany/rusternel" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/k-masatany/rusternel"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/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#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of k-masatany/rusternel on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-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-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/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-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/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" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking k-masatany/rusternel against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-7/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b7db4fbc13d1e6c24b4d707854f82b4e8bab59c2fc871295880fd285eac63001
[INFO] running `"docker" "start" "-a" "b7db4fbc13d1e6c24b4d707854f82b4e8bab59c2fc871295880fd285eac63001"`
[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" "b7db4fbc13d1e6c24b4d707854f82b4e8bab59c2fc871295880fd285eac63001"`
[INFO] running `"docker" "rm" "-f" "b7db4fbc13d1e6c24b4d707854f82b4e8bab59c2fc871295880fd285eac63001"`
[INFO] [stdout] b7db4fbc13d1e6c24b4d707854f82b4e8bab59c2fc871295880fd285eac63001