[INFO] updating cached repository RFarrow9/LearningRust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/RFarrow9/LearningRust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/RFarrow9/LearningRust" "work/ex/beta-1.38-1/sources/1.37.0/gh/RFarrow9/LearningRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/RFarrow9/LearningRust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RFarrow9/LearningRust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RFarrow9/LearningRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RFarrow9/LearningRust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3ac83b82ff672b6c51c38d0c30af53e91dc11cbf
[INFO] sha for GitHub repo RFarrow9/LearningRust: 3ac83b82ff672b6c51c38d0c30af53e91dc11cbf
[INFO] validating manifest of RFarrow9/LearningRust 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 RFarrow9/LearningRust 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 RFarrow9/LearningRust
[INFO] finished frobbing RFarrow9/LearningRust
[INFO] frobbed toml for RFarrow9/LearningRust written to work/ex/beta-1.38-1/sources/1.37.0/gh/RFarrow9/LearningRust/Cargo.toml
[INFO] started frobbing RFarrow9/LearningRust
[INFO] finished frobbing RFarrow9/LearningRust
[INFO] frobbed toml for RFarrow9/LearningRust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RFarrow9/LearningRust/Cargo.toml
[INFO] crate RFarrow9/LearningRust 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 RFarrow9/LearningRust 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/RFarrow9/LearningRust:/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] ec9a216ffe19c59d531d0cc20127fcf0b16248a984feb85e03853e98a5ae90be
[INFO] running `"docker" "start" "-a" "ec9a216ffe19c59d531d0cc20127fcf0b16248a984feb85e03853e98a5ae90be"`
[INFO] [stderr]    Compiling LearningRust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `LearningRust` 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: `learning_rust`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "ec9a216ffe19c59d531d0cc20127fcf0b16248a984feb85e03853e98a5ae90be"`
[INFO] running `"docker" "rm" "-f" "ec9a216ffe19c59d531d0cc20127fcf0b16248a984feb85e03853e98a5ae90be"`
[INFO] [stdout] ec9a216ffe19c59d531d0cc20127fcf0b16248a984feb85e03853e98a5ae90be
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/RFarrow9/LearningRust:/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] e52175333848641d4ec551e7b0a1ccdd2816f381e25f74e0207d49b24386cf00
[INFO] running `"docker" "start" "-a" "e52175333848641d4ec551e7b0a1ccdd2816f381e25f74e0207d49b24386cf00"`
[INFO] [stderr]    Compiling LearningRust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `LearningRust` 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: `learning_rust`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "e52175333848641d4ec551e7b0a1ccdd2816f381e25f74e0207d49b24386cf00"`
[INFO] running `"docker" "rm" "-f" "e52175333848641d4ec551e7b0a1ccdd2816f381e25f74e0207d49b24386cf00"`
[INFO] [stdout] e52175333848641d4ec551e7b0a1ccdd2816f381e25f74e0207d49b24386cf00
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/RFarrow9/LearningRust:/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] 898d54d72fa922235cabb2ca83b593131ee37e3c411db39af10d0034b9a223a2
[INFO] running `"docker" "start" "-a" "898d54d72fa922235cabb2ca83b593131ee37e3c411db39af10d0034b9a223a2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/LearningRust-f1ee07fdc4d61d20
[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" "898d54d72fa922235cabb2ca83b593131ee37e3c411db39af10d0034b9a223a2"`
[INFO] running `"docker" "rm" "-f" "898d54d72fa922235cabb2ca83b593131ee37e3c411db39af10d0034b9a223a2"`
[INFO] [stdout] 898d54d72fa922235cabb2ca83b593131ee37e3c411db39af10d0034b9a223a2