[INFO] updating cached repository cocomoff/open-data-structure-rust-basic
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cocomoff/open-data-structure-rust-basic
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cocomoff/open-data-structure-rust-basic" "work/ex/beta-1.37-6/sources/1.36.0/gh/cocomoff/open-data-structure-rust-basic"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/cocomoff/open-data-structure-rust-basic'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cocomoff/open-data-structure-rust-basic" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/cocomoff/open-data-structure-rust-basic"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/cocomoff/open-data-structure-rust-basic'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 047e43c947706f0666b1e0732609a3a4d1854e5c
[INFO] sha for GitHub repo cocomoff/open-data-structure-rust-basic: 047e43c947706f0666b1e0732609a3a4d1854e5c
[INFO] validating manifest of cocomoff/open-data-structure-rust-basic 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 cocomoff/open-data-structure-rust-basic 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 cocomoff/open-data-structure-rust-basic
[INFO] finished frobbing cocomoff/open-data-structure-rust-basic
[INFO] frobbed toml for cocomoff/open-data-structure-rust-basic written to work/ex/beta-1.37-6/sources/1.36.0/gh/cocomoff/open-data-structure-rust-basic/Cargo.toml
[INFO] started frobbing cocomoff/open-data-structure-rust-basic
[INFO] finished frobbing cocomoff/open-data-structure-rust-basic
[INFO] frobbed toml for cocomoff/open-data-structure-rust-basic written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/cocomoff/open-data-structure-rust-basic/Cargo.toml
[INFO] crate cocomoff/open-data-structure-rust-basic 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 cocomoff/open-data-structure-rust-basic 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-6/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/cocomoff/open-data-structure-rust-basic:/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] 7496b21c7070589bf06edc419627b84205d5c778ca3b0bc78cbd25a257687379
[INFO] running `"docker" "start" "-a" "7496b21c7070589bf06edc419627b84205d5c778ca3b0bc78cbd25a257687379"`
[INFO] [stderr]    Compiling IntroDS v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `IntroDS` 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: `intro_ds`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "7496b21c7070589bf06edc419627b84205d5c778ca3b0bc78cbd25a257687379"`
[INFO] running `"docker" "rm" "-f" "7496b21c7070589bf06edc419627b84205d5c778ca3b0bc78cbd25a257687379"`
[INFO] [stdout] 7496b21c7070589bf06edc419627b84205d5c778ca3b0bc78cbd25a257687379
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/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/cocomoff/open-data-structure-rust-basic:/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] 2c3b90ffd95919d493a2b429ea1c5193cc67a39942082b040030a53cd6d25a4b
[INFO] running `"docker" "start" "-a" "2c3b90ffd95919d493a2b429ea1c5193cc67a39942082b040030a53cd6d25a4b"`
[INFO] [stderr]    Compiling IntroDS v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `IntroDS` 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: `intro_ds`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "2c3b90ffd95919d493a2b429ea1c5193cc67a39942082b040030a53cd6d25a4b"`
[INFO] running `"docker" "rm" "-f" "2c3b90ffd95919d493a2b429ea1c5193cc67a39942082b040030a53cd6d25a4b"`
[INFO] [stdout] 2c3b90ffd95919d493a2b429ea1c5193cc67a39942082b040030a53cd6d25a4b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/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/cocomoff/open-data-structure-rust-basic:/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] 21b82d3daa128f00df62760496237031772123d04f3ab5fb22eeda1fecd2f8a6
[INFO] running `"docker" "start" "-a" "21b82d3daa128f00df62760496237031772123d04f3ab5fb22eeda1fecd2f8a6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/IntroDS-2a91568478cfc5ff
[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" "21b82d3daa128f00df62760496237031772123d04f3ab5fb22eeda1fecd2f8a6"`
[INFO] running `"docker" "rm" "-f" "21b82d3daa128f00df62760496237031772123d04f3ab5fb22eeda1fecd2f8a6"`
[INFO] [stdout] 21b82d3daa128f00df62760496237031772123d04f3ab5fb22eeda1fecd2f8a6