[INFO] updating cached repository danielsonner/wk5-starter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/danielsonner/wk5-starter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/danielsonner/wk5-starter" "work/ex/beta-1.38-1/sources/1.37.0/gh/danielsonner/wk5-starter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/danielsonner/wk5-starter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/danielsonner/wk5-starter" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/danielsonner/wk5-starter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/danielsonner/wk5-starter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 07dd01f4203073f851e24688b87afa687b7c341b
[INFO] sha for GitHub repo danielsonner/wk5-starter: 07dd01f4203073f851e24688b87afa687b7c341b
[INFO] validating manifest of danielsonner/wk5-starter 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 danielsonner/wk5-starter 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 danielsonner/wk5-starter
[INFO] finished frobbing danielsonner/wk5-starter
[INFO] frobbed toml for danielsonner/wk5-starter written to work/ex/beta-1.38-1/sources/1.37.0/gh/danielsonner/wk5-starter/Cargo.toml
[INFO] started frobbing danielsonner/wk5-starter
[INFO] finished frobbing danielsonner/wk5-starter
[INFO] frobbed toml for danielsonner/wk5-starter written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/danielsonner/wk5-starter/Cargo.toml
[INFO] crate danielsonner/wk5-starter 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 danielsonner/wk5-starter against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/danielsonner/wk5-starter:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] e1fa430f1ea907b037d416d0ff1b4eb8c383a41328bf3c965d35d28335498801
[INFO] running `"docker" "start" "-a" "e1fa430f1ea907b037d416d0ff1b4eb8c383a41328bf3c965d35d28335498801"`
[INFO] [stderr]    Compiling wk5 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     std::io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         std::io::stdout().flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `"docker" "inspect" "e1fa430f1ea907b037d416d0ff1b4eb8c383a41328bf3c965d35d28335498801"`
[INFO] running `"docker" "rm" "-f" "e1fa430f1ea907b037d416d0ff1b4eb8c383a41328bf3c965d35d28335498801"`
[INFO] [stdout] e1fa430f1ea907b037d416d0ff1b4eb8c383a41328bf3c965d35d28335498801
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/danielsonner/wk5-starter:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 03ca669c4ba2b6dbc39e3f20f7e9713be34e2bf253dce7f8c8b7d3c94b52a42c
[INFO] running `"docker" "start" "-a" "03ca669c4ba2b6dbc39e3f20f7e9713be34e2bf253dce7f8c8b7d3c94b52a42c"`
[INFO] [stderr]    Compiling wk5 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     std::io::stdout().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         std::io::stdout().flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "03ca669c4ba2b6dbc39e3f20f7e9713be34e2bf253dce7f8c8b7d3c94b52a42c"`
[INFO] running `"docker" "rm" "-f" "03ca669c4ba2b6dbc39e3f20f7e9713be34e2bf253dce7f8c8b7d3c94b52a42c"`
[INFO] [stdout] 03ca669c4ba2b6dbc39e3f20f7e9713be34e2bf253dce7f8c8b7d3c94b52a42c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/danielsonner/wk5-starter:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 85628ca2dcb93d9b5dd615e1d2d06d12a326f30ee2e9e018a2ad5e7d7061801b
[INFO] running `"docker" "start" "-a" "85628ca2dcb93d9b5dd615e1d2d06d12a326f30ee2e9e018a2ad5e7d7061801b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wk5-8a3b4fcbaaf874da
[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" "85628ca2dcb93d9b5dd615e1d2d06d12a326f30ee2e9e018a2ad5e7d7061801b"`
[INFO] running `"docker" "rm" "-f" "85628ca2dcb93d9b5dd615e1d2d06d12a326f30ee2e9e018a2ad5e7d7061801b"`
[INFO] [stdout] 85628ca2dcb93d9b5dd615e1d2d06d12a326f30ee2e9e018a2ad5e7d7061801b