[INFO] cloning repository terakun/spanning_tree_maze
[INFO] running `"git" "clone" "--bare" "git://github.com/terakun/spanning_tree_maze.git" "work/cache/sources/gh/terakun/spanning_tree_maze"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/terakun/spanning_tree_maze'...
[INFO] running `"git" "clone" "work/cache/sources/gh/terakun/spanning_tree_maze" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/terakun/spanning_tree_maze"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/terakun/spanning_tree_maze'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/terakun/spanning_tree_maze" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/terakun/spanning_tree_maze"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/terakun/spanning_tree_maze'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7d76ea3667cf2b8d531d7634fb620d8387038961
[INFO] sha for GitHub repo terakun/spanning_tree_maze: 7d76ea3667cf2b8d531d7634fb620d8387038961
[INFO] validating manifest of terakun/spanning_tree_maze on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of terakun/spanning_tree_maze on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing terakun/spanning_tree_maze
[INFO] finished frobbing terakun/spanning_tree_maze
[INFO] frobbed toml for terakun/spanning_tree_maze written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/terakun/spanning_tree_maze/Cargo.toml
[INFO] started frobbing terakun/spanning_tree_maze
[INFO] finished frobbing terakun/spanning_tree_maze
[INFO] frobbed toml for terakun/spanning_tree_maze written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/terakun/spanning_tree_maze/Cargo.toml
[INFO] crate terakun/spanning_tree_maze has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking terakun/spanning_tree_maze against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-0/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/terakun/spanning_tree_maze:/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2c815c9b45895b8abea20e698f33cbf6bdad3bedae3190dc905b32b9452e13c3
[INFO] running `"docker" "start" "-a" "2c815c9b45895b8abea20e698f33cbf6bdad3bedae3190dc905b32b9452e13c3"`
[INFO] [stderr]     Checking spanning_tree_maze v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `"docker" "inspect" "2c815c9b45895b8abea20e698f33cbf6bdad3bedae3190dc905b32b9452e13c3"`
[INFO] running `"docker" "rm" "-f" "2c815c9b45895b8abea20e698f33cbf6bdad3bedae3190dc905b32b9452e13c3"`
[INFO] [stdout] 2c815c9b45895b8abea20e698f33cbf6bdad3bedae3190dc905b32b9452e13c3