[INFO] updating cached repository thenixan/learning-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/thenixan/learning-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/thenixan/learning-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/thenixan/learning-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/thenixan/learning-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/thenixan/learning-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thenixan/learning-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thenixan/learning-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d6613b3e981867003821b2297af6b8cf1c58dbd5
[INFO] sha for GitHub repo thenixan/learning-rust: d6613b3e981867003821b2297af6b8cf1c58dbd5
[INFO] validating manifest of thenixan/learning-rust 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 thenixan/learning-rust 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 thenixan/learning-rust
[INFO] finished frobbing thenixan/learning-rust
[INFO] frobbed toml for thenixan/learning-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/thenixan/learning-rust/Cargo.toml
[INFO] started frobbing thenixan/learning-rust
[INFO] finished frobbing thenixan/learning-rust
[INFO] frobbed toml for thenixan/learning-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thenixan/learning-rust/Cargo.toml
[INFO] crate thenixan/learning-rust 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] testing thenixan/learning-rust against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thenixan/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=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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] ebaa041d94c8c7cb08245677b01c5c1c1b495cfb34c94a8f64eeefb3551d23b2
[INFO] running `"docker" "start" "-a" "ebaa041d94c8c7cb08245677b01c5c1c1b495cfb34c94a8f64eeefb3551d23b2"`
[INFO] [stderr]    Compiling task_manager v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "ebaa041d94c8c7cb08245677b01c5c1c1b495cfb34c94a8f64eeefb3551d23b2"`
[INFO] running `"docker" "rm" "-f" "ebaa041d94c8c7cb08245677b01c5c1c1b495cfb34c94a8f64eeefb3551d23b2"`
[INFO] [stdout] ebaa041d94c8c7cb08245677b01c5c1c1b495cfb34c94a8f64eeefb3551d23b2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thenixan/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=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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 29d3c81b5fa04752bfe8b6879359a8759f751152050f31d2431579f7c62c86ba
[INFO] running `"docker" "start" "-a" "29d3c81b5fa04752bfe8b6879359a8759f751152050f31d2431579f7c62c86ba"`
[INFO] [stderr]    Compiling task_manager v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "29d3c81b5fa04752bfe8b6879359a8759f751152050f31d2431579f7c62c86ba"`
[INFO] running `"docker" "rm" "-f" "29d3c81b5fa04752bfe8b6879359a8759f751152050f31d2431579f7c62c86ba"`
[INFO] [stdout] 29d3c81b5fa04752bfe8b6879359a8759f751152050f31d2431579f7c62c86ba
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/thenixan/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=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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] ae1888ca4ce1fd1881a50cb6f3afa8cd29eea4bbf64e570725bc846bd01fcb8c
[INFO] running `"docker" "start" "-a" "ae1888ca4ce1fd1881a50cb6f3afa8cd29eea4bbf64e570725bc846bd01fcb8c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/task_manager-f071b6ca2b97f11d
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test first::test::basics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/task_manager-d6e1bcb7d56787e1
[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] [stderr]    Doc-tests task_manager
[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" "ae1888ca4ce1fd1881a50cb6f3afa8cd29eea4bbf64e570725bc846bd01fcb8c"`
[INFO] running `"docker" "rm" "-f" "ae1888ca4ce1fd1881a50cb6f3afa8cd29eea4bbf64e570725bc846bd01fcb8c"`
[INFO] [stdout] ae1888ca4ce1fd1881a50cb6f3afa8cd29eea4bbf64e570725bc846bd01fcb8c