[INFO] updating cached repository Vesnica/learning_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Vesnica/learning_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Vesnica/learning_rust" "work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/Vesnica/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/Vesnica/learning_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Vesnica/learning_rust" "work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/Vesnica/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/Vesnica/learning_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3231c9a07f7d4d3a7d868e19f8e852559397aa36
[INFO] sha for GitHub repo Vesnica/learning_rust: 3231c9a07f7d4d3a7d868e19f8e852559397aa36
[INFO] validating manifest of Vesnica/learning_rust on toolchain master#e2f221c75932de7a29845c8d6f1f73536ad00c41
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Vesnica/learning_rust on toolchain try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Vesnica/learning_rust
[INFO] finished frobbing Vesnica/learning_rust
[INFO] frobbed toml for Vesnica/learning_rust written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/Vesnica/learning_rust/Cargo.toml
[INFO] started frobbing Vesnica/learning_rust
[INFO] finished frobbing Vesnica/learning_rust
[INFO] frobbed toml for Vesnica/learning_rust written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/Vesnica/learning_rust/Cargo.toml
[INFO] crate Vesnica/learning_rust has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Vesnica/learning_rust against master#e2f221c75932de7a29845c8d6f1f73536ad00c41 for pr-57617
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57617/worker-5/master#e2f221c75932de7a29845c8d6f1f73536ad00c41:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/Vesnica/learning_rust:/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" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6de8a7309f961ae41459d222c950054f14c3eb7ba73dbe5e01821d331ca82778
[INFO] running `"docker" "start" "-a" "6de8a7309f961ae41459d222c950054f14c3eb7ba73dbe5e01821d331ca82778"`
[INFO] [stderr]     Checking learning_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "6de8a7309f961ae41459d222c950054f14c3eb7ba73dbe5e01821d331ca82778"`
[INFO] running `"docker" "rm" "-f" "6de8a7309f961ae41459d222c950054f14c3eb7ba73dbe5e01821d331ca82778"`
[INFO] [stdout] 6de8a7309f961ae41459d222c950054f14c3eb7ba73dbe5e01821d331ca82778