[INFO] updating cached repository 02alexander/maze-generator [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/02alexander/maze-generator [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/02alexander/maze-generator" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/02alexander/maze-generator"` [INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/02alexander/maze-generator'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/02alexander/maze-generator" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/02alexander/maze-generator"` [INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/02alexander/maze-generator'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] defd57655ec68cc273815234496f81e2a6613f59 [INFO] sha for GitHub repo 02alexander/maze-generator: defd57655ec68cc273815234496f81e2a6613f59 [INFO] validating manifest of 02alexander/maze-generator on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of 02alexander/maze-generator on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing 02alexander/maze-generator [INFO] finished frobbing 02alexander/maze-generator [INFO] frobbed toml for 02alexander/maze-generator written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/02alexander/maze-generator/Cargo.toml [INFO] started frobbing 02alexander/maze-generator [INFO] finished frobbing 02alexander/maze-generator [INFO] frobbed toml for 02alexander/maze-generator written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/02alexander/maze-generator/Cargo.toml [INFO] crate 02alexander/maze-generator already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking 02alexander/maze-generator against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-7/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/02alexander/maze-generator:/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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 5c59039a7836e6649346d8a91a2bf643de0c3f6b0c73f8bc941503afe01beeac [INFO] running `"docker" "start" "-a" "5c59039a7836e6649346d8a91a2bf643de0c3f6b0c73f8bc941503afe01beeac"` [INFO] [stderr] Checking rand v0.5.1 [INFO] [stderr] Checking miniz-sys v0.1.10 [INFO] [stderr] Checking flate2 v0.2.20 [INFO] [stderr] Checking imagefmt v4.0.0 [INFO] [stderr] Checking maze-generator v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.50s [INFO] running `"docker" "inspect" "5c59039a7836e6649346d8a91a2bf643de0c3f6b0c73f8bc941503afe01beeac"` [INFO] running `"docker" "rm" "-f" "5c59039a7836e6649346d8a91a2bf643de0c3f6b0c73f8bc941503afe01beeac"` [INFO] [stdout] 5c59039a7836e6649346d8a91a2bf643de0c3f6b0c73f8bc941503afe01beeac