[INFO] updating cached repository maretekent/learn_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/maretekent/learn_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/maretekent/learn_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/maretekent/learn_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/maretekent/learn_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maretekent/learn_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maretekent/learn_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maretekent/learn_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2c13d82e36a96f5600978e8a0bbce6daacb5947d
[INFO] sha for GitHub repo maretekent/learn_rust: 2c13d82e36a96f5600978e8a0bbce6daacb5947d
[INFO] validating manifest of maretekent/learn_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 maretekent/learn_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 maretekent/learn_rust
[INFO] finished frobbing maretekent/learn_rust
[INFO] frobbed toml for maretekent/learn_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/maretekent/learn_rust/Cargo.toml
[INFO] started frobbing maretekent/learn_rust
[INFO] finished frobbing maretekent/learn_rust
[INFO] frobbed toml for maretekent/learn_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maretekent/learn_rust/Cargo.toml
[INFO] crate maretekent/learn_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 maretekent/learn_rust 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/maretekent/learn_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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 7c81fa283adaa25fb529e1d1a458b374b97815544958208d3569377e2b32816f
[INFO] running `"docker" "start" "-a" "7c81fa283adaa25fb529e1d1a458b374b97815544958208d3569377e2b32816f"`
[INFO] [stderr]    Compiling myserver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "7c81fa283adaa25fb529e1d1a458b374b97815544958208d3569377e2b32816f"`
[INFO] running `"docker" "rm" "-f" "7c81fa283adaa25fb529e1d1a458b374b97815544958208d3569377e2b32816f"`
[INFO] [stdout] 7c81fa283adaa25fb529e1d1a458b374b97815544958208d3569377e2b32816f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/maretekent/learn_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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 72e62e1c028c03560f824868564546b20bbe976af4d5c0c396e297733ad0d08c
[INFO] running `"docker" "start" "-a" "72e62e1c028c03560f824868564546b20bbe976af4d5c0c396e297733ad0d08c"`
[INFO] [stderr]    Compiling myserver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "72e62e1c028c03560f824868564546b20bbe976af4d5c0c396e297733ad0d08c"`
[INFO] running `"docker" "rm" "-f" "72e62e1c028c03560f824868564546b20bbe976af4d5c0c396e297733ad0d08c"`
[INFO] [stdout] 72e62e1c028c03560f824868564546b20bbe976af4d5c0c396e297733ad0d08c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/maretekent/learn_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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] dbaedaa44e21a4c145a1d1236b141b01c40c91c7f51ec0bcf4071b2a3b23a9a3
[INFO] running `"docker" "start" "-a" "dbaedaa44e21a4c145a1d1236b141b01c40c91c7f51ec0bcf4071b2a3b23a9a3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/myserver-0f9d12b63fe17d0d
[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" "dbaedaa44e21a4c145a1d1236b141b01c40c91c7f51ec0bcf4071b2a3b23a9a3"`
[INFO] running `"docker" "rm" "-f" "dbaedaa44e21a4c145a1d1236b141b01c40c91c7f51ec0bcf4071b2a3b23a9a3"`
[INFO] [stdout] dbaedaa44e21a4c145a1d1236b141b01c40c91c7f51ec0bcf4071b2a3b23a9a3