[INFO] updating cached repository yxwsbobo/study_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yxwsbobo/study_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yxwsbobo/study_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/yxwsbobo/study_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yxwsbobo/study_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yxwsbobo/study_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yxwsbobo/study_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yxwsbobo/study_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3f246f964692f067557084e452c3b69d47c667d1
[INFO] sha for GitHub repo yxwsbobo/study_rust: 3f246f964692f067557084e452c3b69d47c667d1
[INFO] validating manifest of yxwsbobo/study_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 yxwsbobo/study_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 yxwsbobo/study_rust
[INFO] finished frobbing yxwsbobo/study_rust
[INFO] frobbed toml for yxwsbobo/study_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/yxwsbobo/study_rust/Cargo.toml
[INFO] started frobbing yxwsbobo/study_rust
[INFO] finished frobbing yxwsbobo/study_rust
[INFO] frobbed toml for yxwsbobo/study_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yxwsbobo/study_rust/Cargo.toml
[INFO] crate yxwsbobo/study_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 yxwsbobo/study_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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yxwsbobo/study_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] 824d0b1eaa74d3a0ecf38716739683af261ef6f1066eb01747d2c72310c5402a
[INFO] running `"docker" "start" "-a" "824d0b1eaa74d3a0ecf38716739683af261ef6f1066eb01747d2c72310c5402a"`
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling study_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.46s
[INFO] running `"docker" "inspect" "824d0b1eaa74d3a0ecf38716739683af261ef6f1066eb01747d2c72310c5402a"`
[INFO] running `"docker" "rm" "-f" "824d0b1eaa74d3a0ecf38716739683af261ef6f1066eb01747d2c72310c5402a"`
[INFO] [stdout] 824d0b1eaa74d3a0ecf38716739683af261ef6f1066eb01747d2c72310c5402a
[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/yxwsbobo/study_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] 9afe72d7f6008ffe192a9d57119d571e6f4d91f9c9af19f17da81c409044ff44
[INFO] running `"docker" "start" "-a" "9afe72d7f6008ffe192a9d57119d571e6f4d91f9c9af19f17da81c409044ff44"`
[INFO] [stderr]    Compiling study_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "9afe72d7f6008ffe192a9d57119d571e6f4d91f9c9af19f17da81c409044ff44"`
[INFO] running `"docker" "rm" "-f" "9afe72d7f6008ffe192a9d57119d571e6f4d91f9c9af19f17da81c409044ff44"`
[INFO] [stdout] 9afe72d7f6008ffe192a9d57119d571e6f4d91f9c9af19f17da81c409044ff44
[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/yxwsbobo/study_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] 3c06e1e8396cb054bdc06ab5bdf3c1583a19b74e2aeda7794d64b95651d482de
[INFO] running `"docker" "start" "-a" "3c06e1e8396cb054bdc06ab5bdf3c1583a19b74e2aeda7794d64b95651d482de"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/study_rust-7c9e5b2978422927
[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" "3c06e1e8396cb054bdc06ab5bdf3c1583a19b74e2aeda7794d64b95651d482de"`
[INFO] running `"docker" "rm" "-f" "3c06e1e8396cb054bdc06ab5bdf3c1583a19b74e2aeda7794d64b95651d482de"`
[INFO] [stdout] 3c06e1e8396cb054bdc06ab5bdf3c1583a19b74e2aeda7794d64b95651d482de