[INFO] updating cached repository CV001A/Hello_world_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CV001A/Hello_world_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CV001A/Hello_world_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/CV001A/Hello_world_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/CV001A/Hello_world_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CV001A/Hello_world_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CV001A/Hello_world_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CV001A/Hello_world_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0f4222b035221aed741e37800e8c3f77076d44b5
[INFO] sha for GitHub repo CV001A/Hello_world_rust: 0f4222b035221aed741e37800e8c3f77076d44b5
[INFO] validating manifest of CV001A/Hello_world_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 CV001A/Hello_world_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 CV001A/Hello_world_rust
[INFO] finished frobbing CV001A/Hello_world_rust
[INFO] frobbed toml for CV001A/Hello_world_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/CV001A/Hello_world_rust/Cargo.toml
[INFO] started frobbing CV001A/Hello_world_rust
[INFO] finished frobbing CV001A/Hello_world_rust
[INFO] frobbed toml for CV001A/Hello_world_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CV001A/Hello_world_rust/Cargo.toml
[INFO] crate CV001A/Hello_world_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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing CV001A/Hello_world_rust 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-4/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/CV001A/Hello_world_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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] d8a272dc12801fed698918f3c329a5a1fc8ca4d14e5603688b2fa60700da1172
[INFO] running `"docker" "start" "-a" "d8a272dc12801fed698918f3c329a5a1fc8ca4d14e5603688b2fa60700da1172"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling Hello_world_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `Hello_world_rust` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `hello_world_rust`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `"docker" "inspect" "d8a272dc12801fed698918f3c329a5a1fc8ca4d14e5603688b2fa60700da1172"`
[INFO] running `"docker" "rm" "-f" "d8a272dc12801fed698918f3c329a5a1fc8ca4d14e5603688b2fa60700da1172"`
[INFO] [stdout] d8a272dc12801fed698918f3c329a5a1fc8ca4d14e5603688b2fa60700da1172
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/CV001A/Hello_world_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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 37aeec107f85cd143fb5130e589b35d6773b87c6ba97c3c5ffc73cbe73846620
[INFO] running `"docker" "start" "-a" "37aeec107f85cd143fb5130e589b35d6773b87c6ba97c3c5ffc73cbe73846620"`
[INFO] [stderr]    Compiling Hello_world_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `Hello_world_rust` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `hello_world_rust`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "37aeec107f85cd143fb5130e589b35d6773b87c6ba97c3c5ffc73cbe73846620"`
[INFO] running `"docker" "rm" "-f" "37aeec107f85cd143fb5130e589b35d6773b87c6ba97c3c5ffc73cbe73846620"`
[INFO] [stdout] 37aeec107f85cd143fb5130e589b35d6773b87c6ba97c3c5ffc73cbe73846620
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/CV001A/Hello_world_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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 07667e885dc965ed2acf8ba94846587bc47115b9cded2b74f5e3028f0f23d072
[INFO] running `"docker" "start" "-a" "07667e885dc965ed2acf8ba94846587bc47115b9cded2b74f5e3028f0f23d072"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/Hello_world_rust-2bc7de8ff23a917f
[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" "07667e885dc965ed2acf8ba94846587bc47115b9cded2b74f5e3028f0f23d072"`
[INFO] running `"docker" "rm" "-f" "07667e885dc965ed2acf8ba94846587bc47115b9cded2b74f5e3028f0f23d072"`
[INFO] [stdout] 07667e885dc965ed2acf8ba94846587bc47115b9cded2b74f5e3028f0f23d072