[INFO] updating cached repository jakegornall/learn_structs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jakegornall/learn_structs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jakegornall/learn_structs" "work/ex/beta-1.38-1/sources/1.37.0/gh/jakegornall/learn_structs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jakegornall/learn_structs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jakegornall/learn_structs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jakegornall/learn_structs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jakegornall/learn_structs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c1f0031dc44513dc5f1db1417d27c38236b4e799
[INFO] sha for GitHub repo jakegornall/learn_structs: c1f0031dc44513dc5f1db1417d27c38236b4e799
[INFO] validating manifest of jakegornall/learn_structs 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 jakegornall/learn_structs 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 jakegornall/learn_structs
[INFO] finished frobbing jakegornall/learn_structs
[INFO] frobbed toml for jakegornall/learn_structs written to work/ex/beta-1.38-1/sources/1.37.0/gh/jakegornall/learn_structs/Cargo.toml
[INFO] started frobbing jakegornall/learn_structs
[INFO] finished frobbing jakegornall/learn_structs
[INFO] frobbed toml for jakegornall/learn_structs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jakegornall/learn_structs/Cargo.toml
[INFO] crate jakegornall/learn_structs 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 jakegornall/learn_structs 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jakegornall/learn_structs:/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] dd7688b19de2208dfd9cbba3aba100ca88b307930263d036deaca2b8f2b02dec
[INFO] running `"docker" "start" "-a" "dd7688b19de2208dfd9cbba3aba100ca88b307930263d036deaca2b8f2b02dec"`
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling learn_structs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.22s
[INFO] running `"docker" "inspect" "dd7688b19de2208dfd9cbba3aba100ca88b307930263d036deaca2b8f2b02dec"`
[INFO] running `"docker" "rm" "-f" "dd7688b19de2208dfd9cbba3aba100ca88b307930263d036deaca2b8f2b02dec"`
[INFO] [stdout] dd7688b19de2208dfd9cbba3aba100ca88b307930263d036deaca2b8f2b02dec
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jakegornall/learn_structs:/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] 06dfed0ce231d85b776b2bc9ad0dbabc99b2df1d4efe44614afb6caca0a48d37
[INFO] running `"docker" "start" "-a" "06dfed0ce231d85b776b2bc9ad0dbabc99b2df1d4efe44614afb6caca0a48d37"`
[INFO] [stderr]    Compiling learn_structs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "06dfed0ce231d85b776b2bc9ad0dbabc99b2df1d4efe44614afb6caca0a48d37"`
[INFO] running `"docker" "rm" "-f" "06dfed0ce231d85b776b2bc9ad0dbabc99b2df1d4efe44614afb6caca0a48d37"`
[INFO] [stdout] 06dfed0ce231d85b776b2bc9ad0dbabc99b2df1d4efe44614afb6caca0a48d37
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jakegornall/learn_structs:/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] 066874d9cfea5bb4879ba85c63a04ee91bc56800f208b2b1ef20dc7a7e3f33bc
[INFO] running `"docker" "start" "-a" "066874d9cfea5bb4879ba85c63a04ee91bc56800f208b2b1ef20dc7a7e3f33bc"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learn_structs-d6fd0635a28f0ed7
[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" "066874d9cfea5bb4879ba85c63a04ee91bc56800f208b2b1ef20dc7a7e3f33bc"`
[INFO] running `"docker" "rm" "-f" "066874d9cfea5bb4879ba85c63a04ee91bc56800f208b2b1ef20dc7a7e3f33bc"`
[INFO] [stdout] 066874d9cfea5bb4879ba85c63a04ee91bc56800f208b2b1ef20dc7a7e3f33bc