[INFO] updating cached repository shmutalov/growingtree-maze
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/shmutalov/growingtree-maze
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/shmutalov/growingtree-maze" "work/ex/beta-1.38-1/sources/1.37.0/gh/shmutalov/growingtree-maze"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/shmutalov/growingtree-maze'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/shmutalov/growingtree-maze" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shmutalov/growingtree-maze"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shmutalov/growingtree-maze'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 52d79d954b1aaf81899d599e1452d4428547cc0a
[INFO] sha for GitHub repo shmutalov/growingtree-maze: 52d79d954b1aaf81899d599e1452d4428547cc0a
[INFO] validating manifest of shmutalov/growingtree-maze on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of shmutalov/growingtree-maze on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing shmutalov/growingtree-maze
[INFO] finished frobbing shmutalov/growingtree-maze
[INFO] frobbed toml for shmutalov/growingtree-maze written to work/ex/beta-1.38-1/sources/1.37.0/gh/shmutalov/growingtree-maze/Cargo.toml
[INFO] started frobbing shmutalov/growingtree-maze
[INFO] finished frobbing shmutalov/growingtree-maze
[INFO] frobbed toml for shmutalov/growingtree-maze written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shmutalov/growingtree-maze/Cargo.toml
[INFO] crate shmutalov/growingtree-maze already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing shmutalov/growingtree-maze against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/shmutalov/growingtree-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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 25f85770658a0ceb2456fd4973303a76e922347bde46da4972991ebc9067085b
[INFO] running `"docker" "start" "-a" "25f85770658a0ceb2456fd4973303a76e922347bde46da4972991ebc9067085b"`
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling growingtree-maze v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.56s
[INFO] running `"docker" "inspect" "25f85770658a0ceb2456fd4973303a76e922347bde46da4972991ebc9067085b"`
[INFO] running `"docker" "rm" "-f" "25f85770658a0ceb2456fd4973303a76e922347bde46da4972991ebc9067085b"`
[INFO] [stdout] 25f85770658a0ceb2456fd4973303a76e922347bde46da4972991ebc9067085b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/shmutalov/growingtree-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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 77d1f7309b3f3f11c042e2b5d5d3c261ef6bf61db5476e0d68aca8bebfd97ef0
[INFO] running `"docker" "start" "-a" "77d1f7309b3f3f11c042e2b5d5d3c261ef6bf61db5476e0d68aca8bebfd97ef0"`
[INFO] [stderr]    Compiling growingtree-maze v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "77d1f7309b3f3f11c042e2b5d5d3c261ef6bf61db5476e0d68aca8bebfd97ef0"`
[INFO] running `"docker" "rm" "-f" "77d1f7309b3f3f11c042e2b5d5d3c261ef6bf61db5476e0d68aca8bebfd97ef0"`
[INFO] [stdout] 77d1f7309b3f3f11c042e2b5d5d3c261ef6bf61db5476e0d68aca8bebfd97ef0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/shmutalov/growingtree-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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 03d2ee9b5b8c51a3e5ca346b4eced67281c00c6aa6a934c2c61c4c304f02b59b
[INFO] running `"docker" "start" "-a" "03d2ee9b5b8c51a3e5ca346b4eced67281c00c6aa6a934c2c61c4c304f02b59b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/growingtree_maze-04bac6cdde1578b4
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "03d2ee9b5b8c51a3e5ca346b4eced67281c00c6aa6a934c2c61c4c304f02b59b"`
[INFO] running `"docker" "rm" "-f" "03d2ee9b5b8c51a3e5ca346b4eced67281c00c6aa6a934c2c61c4c304f02b59b"`
[INFO] [stdout] 03d2ee9b5b8c51a3e5ca346b4eced67281c00c6aa6a934c2c61c4c304f02b59b