[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/beta-1.37-6/sources/1.36.0/gh/Vesnica/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Vesnica/learning_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Vesnica/learning_rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Vesnica/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Vesnica/learning_rust on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/gh/Vesnica/learning_rust/Cargo.toml
[INFO] crate Vesnica/learning_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Vesnica/learning_rust against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 16ac7d332abdb829b189db6d391e4eaacd00f7baae629f7f686e3fbd5fba872e
[INFO] running `"docker" "start" "-a" "16ac7d332abdb829b189db6d391e4eaacd00f7baae629f7f686e3fbd5fba872e"`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "16ac7d332abdb829b189db6d391e4eaacd00f7baae629f7f686e3fbd5fba872e"`
[INFO] running `"docker" "rm" "-f" "16ac7d332abdb829b189db6d391e4eaacd00f7baae629f7f686e3fbd5fba872e"`
[INFO] [stdout] 16ac7d332abdb829b189db6d391e4eaacd00f7baae629f7f686e3fbd5fba872e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 260cd10d330c68ea025c4a26fab4baf1a6d2b7f2b306d0cc6e01e60870d88c6d
[INFO] running `"docker" "start" "-a" "260cd10d330c68ea025c4a26fab4baf1a6d2b7f2b306d0cc6e01e60870d88c6d"`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "260cd10d330c68ea025c4a26fab4baf1a6d2b7f2b306d0cc6e01e60870d88c6d"`
[INFO] running `"docker" "rm" "-f" "260cd10d330c68ea025c4a26fab4baf1a6d2b7f2b306d0cc6e01e60870d88c6d"`
[INFO] [stdout] 260cd10d330c68ea025c4a26fab4baf1a6d2b7f2b306d0cc6e01e60870d88c6d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 099a5688eb9225648d88cd736b5b234c7328d7a9ff0002962c45fb948d4bfe46
[INFO] running `"docker" "start" "-a" "099a5688eb9225648d88cd736b5b234c7328d7a9ff0002962c45fb948d4bfe46"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learning_rust-b11ef664792947e5
[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" "099a5688eb9225648d88cd736b5b234c7328d7a9ff0002962c45fb948d4bfe46"`
[INFO] running `"docker" "rm" "-f" "099a5688eb9225648d88cd736b5b234c7328d7a9ff0002962c45fb948d4bfe46"`
[INFO] [stdout] 099a5688eb9225648d88cd736b5b234c7328d7a9ff0002962c45fb948d4bfe46