[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-1.37-6/sources/1.36.0/gh/RFarrow9/LearningRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/RFarrow9/LearningRust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RFarrow9/LearningRust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/RFarrow9/LearningRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of RFarrow9/LearningRust 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 RFarrow9/LearningRust
[INFO] finished frobbing RFarrow9/LearningRust
[INFO] frobbed toml for RFarrow9/LearningRust written to work/ex/beta-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "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 RFarrow9/LearningRust 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-2/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/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 0e52145b24fa02be14d0b2e846aa1bc30fe6f8307307fe5b9386c283f1189df2
[INFO] running `"docker" "start" "-a" "0e52145b24fa02be14d0b2e846aa1bc30fe6f8307307fe5b9386c283f1189df2"`
[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 0.61s
[INFO] running `"docker" "inspect" "0e52145b24fa02be14d0b2e846aa1bc30fe6f8307307fe5b9386c283f1189df2"`
[INFO] running `"docker" "rm" "-f" "0e52145b24fa02be14d0b2e846aa1bc30fe6f8307307fe5b9386c283f1189df2"`
[INFO] [stdout] 0e52145b24fa02be14d0b2e846aa1bc30fe6f8307307fe5b9386c283f1189df2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] d4c0e85d28fbb966c8487b270aca2fac82eda3c0c0edbd47c198a13ce6e46c1f
[INFO] running `"docker" "start" "-a" "d4c0e85d28fbb966c8487b270aca2fac82eda3c0c0edbd47c198a13ce6e46c1f"`
[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 0.70s
[INFO] running `"docker" "inspect" "d4c0e85d28fbb966c8487b270aca2fac82eda3c0c0edbd47c198a13ce6e46c1f"`
[INFO] running `"docker" "rm" "-f" "d4c0e85d28fbb966c8487b270aca2fac82eda3c0c0edbd47c198a13ce6e46c1f"`
[INFO] [stdout] d4c0e85d28fbb966c8487b270aca2fac82eda3c0c0edbd47c198a13ce6e46c1f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 282b82737f7e6cbcf47f51cffcab1f5abd7cb067e4e1f65cbcbee61b2d22288d
[INFO] running `"docker" "start" "-a" "282b82737f7e6cbcf47f51cffcab1f5abd7cb067e4e1f65cbcbee61b2d22288d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/LearningRust-d10ad7a663163b17
[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" "282b82737f7e6cbcf47f51cffcab1f5abd7cb067e4e1f65cbcbee61b2d22288d"`
[INFO] running `"docker" "rm" "-f" "282b82737f7e6cbcf47f51cffcab1f5abd7cb067e4e1f65cbcbee61b2d22288d"`
[INFO] [stdout] 282b82737f7e6cbcf47f51cffcab1f5abd7cb067e4e1f65cbcbee61b2d22288d