[INFO] updating cached repository https://github.com/sjmann/rust_quiz
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ba945bcb65e3ef430e24aee2b9b7758749e0e656
[INFO] testing sjmann/rust_quiz against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjmann%2Frust_quiz" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sjmann/rust_quiz on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sjmann/rust_quiz
[INFO] finished tweaking git repo https://github.com/sjmann/rust_quiz
[INFO] tweaked toml for git repo https://github.com/sjmann/rust_quiz written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/sjmann/rust_quiz already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 1b7961c94ed3ae009767204aff49120f93975c414f425efeea6ad9de065c44fb
[INFO] running `"docker" "start" "-a" "1b7961c94ed3ae009767204aff49120f93975c414f425efeea6ad9de065c44fb"`
[INFO] [stderr]    Compiling rust_quiz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never used: `chapter`
[INFO] [stderr]  --> src/io_quiz/question.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     chapter: u8,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "1b7961c94ed3ae009767204aff49120f93975c414f425efeea6ad9de065c44fb"`
[INFO] running `"docker" "rm" "-f" "1b7961c94ed3ae009767204aff49120f93975c414f425efeea6ad9de065c44fb"`
[INFO] [stdout] 1b7961c94ed3ae009767204aff49120f93975c414f425efeea6ad9de065c44fb
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] bca9612ad531218b4d7257b103c1510ff5c1042dd156b42d46a56715ad82e27f
[INFO] running `"docker" "start" "-a" "bca9612ad531218b4d7257b103c1510ff5c1042dd156b42d46a56715ad82e27f"`
[INFO] [stderr]    Compiling rust_quiz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never used: `chapter`
[INFO] [stderr]  --> src/io_quiz/question.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     chapter: u8,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "bca9612ad531218b4d7257b103c1510ff5c1042dd156b42d46a56715ad82e27f"`
[INFO] running `"docker" "rm" "-f" "bca9612ad531218b4d7257b103c1510ff5c1042dd156b42d46a56715ad82e27f"`
[INFO] [stdout] bca9612ad531218b4d7257b103c1510ff5c1042dd156b42d46a56715ad82e27f
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 960732365b15ba8962796c8089cb93584550e6a1252ef4efd1a9884e292dbb14
[INFO] running `"docker" "start" "-a" "960732365b15ba8962796c8089cb93584550e6a1252ef4efd1a9884e292dbb14"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_quiz-859282b955e5ee38
[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" "960732365b15ba8962796c8089cb93584550e6a1252ef4efd1a9884e292dbb14"`
[INFO] running `"docker" "rm" "-f" "960732365b15ba8962796c8089cb93584550e6a1252ef4efd1a9884e292dbb14"`
[INFO] [stdout] 960732365b15ba8962796c8089cb93584550e6a1252ef4efd1a9884e292dbb14