[INFO] updating cached repository kimond/learn-rust-with-tests
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kimond/learn-rust-with-tests
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kimond/learn-rust-with-tests" "work/ex/beta-1.38-1/sources/1.37.0/gh/kimond/learn-rust-with-tests"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kimond/learn-rust-with-tests'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kimond/learn-rust-with-tests" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kimond/learn-rust-with-tests"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kimond/learn-rust-with-tests'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 02513017a214fac8aa255f6c69aa1caef844abae
[INFO] sha for GitHub repo kimond/learn-rust-with-tests: 02513017a214fac8aa255f6c69aa1caef844abae
[INFO] validating manifest of kimond/learn-rust-with-tests 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 kimond/learn-rust-with-tests 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 kimond/learn-rust-with-tests
[INFO] finished frobbing kimond/learn-rust-with-tests
[INFO] frobbed toml for kimond/learn-rust-with-tests written to work/ex/beta-1.38-1/sources/1.37.0/gh/kimond/learn-rust-with-tests/Cargo.toml
[INFO] started frobbing kimond/learn-rust-with-tests
[INFO] finished frobbing kimond/learn-rust-with-tests
[INFO] frobbed toml for kimond/learn-rust-with-tests written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kimond/learn-rust-with-tests/Cargo.toml
[INFO] crate kimond/learn-rust-with-tests 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kimond/learn-rust-with-tests 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-6/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/kimond/learn-rust-with-tests:/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] a44159e5c9034a54d6c65bbb916546e40d7de385605cef81d830e291084e68bd
[INFO] running `"docker" "start" "-a" "a44159e5c9034a54d6c65bbb916546e40d7de385605cef81d830e291084e68bd"`
[INFO] [stderr]    Compiling learn_rust_with_tests v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "a44159e5c9034a54d6c65bbb916546e40d7de385605cef81d830e291084e68bd"`
[INFO] running `"docker" "rm" "-f" "a44159e5c9034a54d6c65bbb916546e40d7de385605cef81d830e291084e68bd"`
[INFO] [stdout] a44159e5c9034a54d6c65bbb916546e40d7de385605cef81d830e291084e68bd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/kimond/learn-rust-with-tests:/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] 7d89c8827c0cac7d565efffbb6c6d60cd18c23e4aeb470119023baca1a756324
[INFO] running `"docker" "start" "-a" "7d89c8827c0cac7d565efffbb6c6d60cd18c23e4aeb470119023baca1a756324"`
[INFO] [stderr]    Compiling learn_rust_with_tests v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "7d89c8827c0cac7d565efffbb6c6d60cd18c23e4aeb470119023baca1a756324"`
[INFO] running `"docker" "rm" "-f" "7d89c8827c0cac7d565efffbb6c6d60cd18c23e4aeb470119023baca1a756324"`
[INFO] [stdout] 7d89c8827c0cac7d565efffbb6c6d60cd18c23e4aeb470119023baca1a756324
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/kimond/learn-rust-with-tests:/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] 48ac20565b59eb317dcc81a5f12681f17863e1fe33fa0e9537db019aa5f5c40b
[INFO] running `"docker" "start" "-a" "48ac20565b59eb317dcc81a5f12681f17863e1fe33fa0e9537db019aa5f5c40b"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learn_rust_with_tests-63a35f9596ca2de8
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "48ac20565b59eb317dcc81a5f12681f17863e1fe33fa0e9537db019aa5f5c40b"`
[INFO] running `"docker" "rm" "-f" "48ac20565b59eb317dcc81a5f12681f17863e1fe33fa0e9537db019aa5f5c40b"`
[INFO] [stdout] 48ac20565b59eb317dcc81a5f12681f17863e1fe33fa0e9537db019aa5f5c40b