[INFO] updating cached repository balderstonb/rust_www
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/balderstonb/rust_www
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/balderstonb/rust_www" "work/ex/beta-1.38-1/sources/1.37.0/gh/balderstonb/rust_www"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/balderstonb/rust_www'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/balderstonb/rust_www" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/balderstonb/rust_www"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/balderstonb/rust_www'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8a3307ae4987d70500e03122ea27cac158fb3606
[INFO] sha for GitHub repo balderstonb/rust_www: 8a3307ae4987d70500e03122ea27cac158fb3606
[INFO] validating manifest of balderstonb/rust_www 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 balderstonb/rust_www 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 balderstonb/rust_www
[INFO] finished frobbing balderstonb/rust_www
[INFO] frobbed toml for balderstonb/rust_www written to work/ex/beta-1.38-1/sources/1.37.0/gh/balderstonb/rust_www/Cargo.toml
[INFO] started frobbing balderstonb/rust_www
[INFO] finished frobbing balderstonb/rust_www
[INFO] frobbed toml for balderstonb/rust_www written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/balderstonb/rust_www/Cargo.toml
[INFO] crate balderstonb/rust_www 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 balderstonb/rust_www 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/balderstonb/rust_www:/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] df159a5f6b366788cb71deed7fdfe5a6f02bf64c7f5b5db105f2a7c5e02f5ade
[INFO] running `"docker" "start" "-a" "df159a5f6b366788cb71deed7fdfe5a6f02bf64c7f5b5db105f2a7c5e02f5ade"`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `workers`
[INFO] [stderr]   --> src/lib.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     workers: Vec<Worker>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     id: usize,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `thread`
[INFO] [stderr]   --> src/lib.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     thread: thread::JoinHandle<()>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "df159a5f6b366788cb71deed7fdfe5a6f02bf64c7f5b5db105f2a7c5e02f5ade"`
[INFO] running `"docker" "rm" "-f" "df159a5f6b366788cb71deed7fdfe5a6f02bf64c7f5b5db105f2a7c5e02f5ade"`
[INFO] [stdout] df159a5f6b366788cb71deed7fdfe5a6f02bf64c7f5b5db105f2a7c5e02f5ade
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/balderstonb/rust_www:/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] a61b60eefca24816298307d4274630d36c0f3e5b624236e21bbad4bddd615ce1
[INFO] running `"docker" "start" "-a" "a61b60eefca24816298307d4274630d36c0f3e5b624236e21bbad4bddd615ce1"`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `workers`
[INFO] [stderr]   --> src/lib.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     workers: Vec<Worker>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     id: usize,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `thread`
[INFO] [stderr]   --> src/lib.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     thread: thread::JoinHandle<()>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "a61b60eefca24816298307d4274630d36c0f3e5b624236e21bbad4bddd615ce1"`
[INFO] running `"docker" "rm" "-f" "a61b60eefca24816298307d4274630d36c0f3e5b624236e21bbad4bddd615ce1"`
[INFO] [stdout] a61b60eefca24816298307d4274630d36c0f3e5b624236e21bbad4bddd615ce1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/balderstonb/rust_www:/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] 321fdc494680197e5e6da04821b63667f0acc9cde115193c5fa3adef21bb24dd
[INFO] running `"docker" "start" "-a" "321fdc494680197e5e6da04821b63667f0acc9cde115193c5fa3adef21bb24dd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hello-5b9dfb37170617c2
[INFO] [stderr]      Running /opt/crater/target/debug/deps/main-29b48f5505e9770f
[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] [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] [stderr]    Doc-tests hello
[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" "321fdc494680197e5e6da04821b63667f0acc9cde115193c5fa3adef21bb24dd"`
[INFO] running `"docker" "rm" "-f" "321fdc494680197e5e6da04821b63667f0acc9cde115193c5fa3adef21bb24dd"`
[INFO] [stdout] 321fdc494680197e5e6da04821b63667f0acc9cde115193c5fa3adef21bb24dd