[INFO] updating cached repository cptchuckles/russian-flash-cards
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cptchuckles/russian-flash-cards
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cptchuckles/russian-flash-cards" "work/ex/beta-1.38-1/sources/1.37.0/gh/cptchuckles/russian-flash-cards"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/cptchuckles/russian-flash-cards'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cptchuckles/russian-flash-cards" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cptchuckles/russian-flash-cards"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cptchuckles/russian-flash-cards'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 52a945d6f070d85d725c66de44f64245d897205d
[INFO] sha for GitHub repo cptchuckles/russian-flash-cards: 52a945d6f070d85d725c66de44f64245d897205d
[INFO] validating manifest of cptchuckles/russian-flash-cards 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 cptchuckles/russian-flash-cards 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 cptchuckles/russian-flash-cards
[INFO] finished frobbing cptchuckles/russian-flash-cards
[INFO] frobbed toml for cptchuckles/russian-flash-cards written to work/ex/beta-1.38-1/sources/1.37.0/gh/cptchuckles/russian-flash-cards/Cargo.toml
[INFO] started frobbing cptchuckles/russian-flash-cards
[INFO] finished frobbing cptchuckles/russian-flash-cards
[INFO] frobbed toml for cptchuckles/russian-flash-cards written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cptchuckles/russian-flash-cards/Cargo.toml
[INFO] crate cptchuckles/russian-flash-cards 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 cptchuckles/russian-flash-cards 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/cptchuckles/russian-flash-cards:/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] d753812f31d104c6fcbd69e97e6d378a15d26ec29928e3fc3eb0d30194480965
[INFO] running `"docker" "start" "-a" "d753812f31d104c6fcbd69e97e6d378a15d26ec29928e3fc3eb0d30194480965"`
[INFO] [stderr]    Compiling Russian v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rand::prelude::*`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Russian` 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: `russian`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `"docker" "inspect" "d753812f31d104c6fcbd69e97e6d378a15d26ec29928e3fc3eb0d30194480965"`
[INFO] running `"docker" "rm" "-f" "d753812f31d104c6fcbd69e97e6d378a15d26ec29928e3fc3eb0d30194480965"`
[INFO] [stdout] d753812f31d104c6fcbd69e97e6d378a15d26ec29928e3fc3eb0d30194480965
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/cptchuckles/russian-flash-cards:/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] 4db664cdc8948fbca1139b96e14200d895c214dd58357d3cfd42e03bcb3ff5dd
[INFO] running `"docker" "start" "-a" "4db664cdc8948fbca1139b96e14200d895c214dd58357d3cfd42e03bcb3ff5dd"`
[INFO] [stderr]    Compiling Russian v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rand::prelude::*`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Russian` 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: `russian`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "4db664cdc8948fbca1139b96e14200d895c214dd58357d3cfd42e03bcb3ff5dd"`
[INFO] running `"docker" "rm" "-f" "4db664cdc8948fbca1139b96e14200d895c214dd58357d3cfd42e03bcb3ff5dd"`
[INFO] [stdout] 4db664cdc8948fbca1139b96e14200d895c214dd58357d3cfd42e03bcb3ff5dd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/cptchuckles/russian-flash-cards:/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] 3fafb530c8c333ef878f21a2a503014699244a2d02a3b3580fee1651b2062d34
[INFO] running `"docker" "start" "-a" "3fafb530c8c333ef878f21a2a503014699244a2d02a3b3580fee1651b2062d34"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/Russian-4dd1e689dfe29444
[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" "3fafb530c8c333ef878f21a2a503014699244a2d02a3b3580fee1651b2062d34"`
[INFO] running `"docker" "rm" "-f" "3fafb530c8c333ef878f21a2a503014699244a2d02a3b3580fee1651b2062d34"`
[INFO] [stdout] 3fafb530c8c333ef878f21a2a503014699244a2d02a3b3580fee1651b2062d34