[INFO] updating cached repository gcao/learn_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gcao/learn_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gcao/learn_rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/gcao/learn_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/gcao/learn_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gcao/learn_rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gcao/learn_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gcao/learn_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a2d672b5f4bde5028c79485e4136671eb3e8b9e7
[INFO] sha for GitHub repo gcao/learn_rust: a2d672b5f4bde5028c79485e4136671eb3e8b9e7
[INFO] validating manifest of gcao/learn_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 gcao/learn_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 gcao/learn_rust
[INFO] finished frobbing gcao/learn_rust
[INFO] frobbed toml for gcao/learn_rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/gcao/learn_rust/Cargo.toml
[INFO] started frobbing gcao/learn_rust
[INFO] finished frobbing gcao/learn_rust
[INFO] frobbed toml for gcao/learn_rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gcao/learn_rust/Cargo.toml
[INFO] crate gcao/learn_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 gcao/learn_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-1/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/gcao/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c17688ba84a14a797d4171df85a29ba838a76fa32f1109eb081cf232f9acdf60
[INFO] running `"docker" "start" "-a" "c17688ba84a14a797d4171df85a29ba838a76fa32f1109eb081cf232f9acdf60"`
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "c17688ba84a14a797d4171df85a29ba838a76fa32f1109eb081cf232f9acdf60"`
[INFO] running `"docker" "rm" "-f" "c17688ba84a14a797d4171df85a29ba838a76fa32f1109eb081cf232f9acdf60"`
[INFO] [stdout] c17688ba84a14a797d4171df85a29ba838a76fa32f1109eb081cf232f9acdf60
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/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/gcao/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] c1187f46a02977fdede1ff0d3e6462944e760373f8ce5ec243d7df80e2870f32
[INFO] running `"docker" "start" "-a" "c1187f46a02977fdede1ff0d3e6462944e760373f8ce5ec243d7df80e2870f32"`
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "c1187f46a02977fdede1ff0d3e6462944e760373f8ce5ec243d7df80e2870f32"`
[INFO] running `"docker" "rm" "-f" "c1187f46a02977fdede1ff0d3e6462944e760373f8ce5ec243d7df80e2870f32"`
[INFO] [stdout] c1187f46a02977fdede1ff0d3e6462944e760373f8ce5ec243d7df80e2870f32
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/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/gcao/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 794621b348c34edb65e6f32524957ba69d5e97491c0a7252f0f52e4efa6e46fd
[INFO] running `"docker" "start" "-a" "794621b348c34edb65e6f32524957ba69d5e97491c0a7252f0f52e4efa6e46fd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learn_rust-d408ecb039f5c6f8
[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" "794621b348c34edb65e6f32524957ba69d5e97491c0a7252f0f52e4efa6e46fd"`
[INFO] running `"docker" "rm" "-f" "794621b348c34edb65e6f32524957ba69d5e97491c0a7252f0f52e4efa6e46fd"`
[INFO] [stdout] 794621b348c34edb65e6f32524957ba69d5e97491c0a7252f0f52e4efa6e46fd