[INFO] crate unjumble 0.0.1 is already in cache
[INFO] extracting crate unjumble 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/unjumble/0.0.1
[INFO] extracting crate unjumble 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/unjumble/0.0.1
[INFO] validating manifest of unjumble-0.0.1 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 unjumble-0.0.1 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 unjumble-0.0.1
[INFO] finished frobbing unjumble-0.0.1
[INFO] frobbed toml for unjumble-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/unjumble/0.0.1/Cargo.toml
[INFO] started frobbing unjumble-0.0.1
[INFO] finished frobbing unjumble-0.0.1
[INFO] frobbed toml for unjumble-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/unjumble/0.0.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 unjumble-0.0.1 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/unjumble/0.0.1:/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] fc480f96440184e120b886efdcbb6a393f2a669715755a727d16390df148134f
[INFO] running `"docker" "start" "-a" "fc480f96440184e120b886efdcbb6a393f2a669715755a727d16390df148134f"`
[INFO] [stderr]    Compiling unjumble v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `jumbled`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let jumbled = "tinsel";
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_jumbled`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `"docker" "inspect" "fc480f96440184e120b886efdcbb6a393f2a669715755a727d16390df148134f"`
[INFO] running `"docker" "rm" "-f" "fc480f96440184e120b886efdcbb6a393f2a669715755a727d16390df148134f"`
[INFO] [stdout] fc480f96440184e120b886efdcbb6a393f2a669715755a727d16390df148134f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/unjumble/0.0.1:/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] df371b0874c33fca1dc9a95493186c5c1b70c875a5f1e0ffdffef5b889404d82
[INFO] running `"docker" "start" "-a" "df371b0874c33fca1dc9a95493186c5c1b70c875a5f1e0ffdffef5b889404d82"`
[INFO] [stderr]    Compiling unjumble v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `jumbled`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let jumbled = "tinsel";
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_jumbled`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "df371b0874c33fca1dc9a95493186c5c1b70c875a5f1e0ffdffef5b889404d82"`
[INFO] running `"docker" "rm" "-f" "df371b0874c33fca1dc9a95493186c5c1b70c875a5f1e0ffdffef5b889404d82"`
[INFO] [stdout] df371b0874c33fca1dc9a95493186c5c1b70c875a5f1e0ffdffef5b889404d82
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/unjumble/0.0.1:/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] d8b0fe6282aa65b45678211c7e459e0ecc5c205c6ab048b9170ea72ae52f3924
[INFO] running `"docker" "start" "-a" "d8b0fe6282aa65b45678211c7e459e0ecc5c205c6ab048b9170ea72ae52f3924"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/unjumble-04cb3c816f80a692
[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" "d8b0fe6282aa65b45678211c7e459e0ecc5c205c6ab048b9170ea72ae52f3924"`
[INFO] running `"docker" "rm" "-f" "d8b0fe6282aa65b45678211c7e459e0ecc5c205c6ab048b9170ea72ae52f3924"`
[INFO] [stdout] d8b0fe6282aa65b45678211c7e459e0ecc5c205c6ab048b9170ea72ae52f3924