[INFO] updating cached repository https://github.com/truedoomboom/IntroductionToRust
[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] f688a7a7bcacb24629919470bb46375efc9c6257
[INFO] testing truedoomboom/IntroductionToRust against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftruedoomboom%2FIntroductionToRust" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/truedoomboom/IntroductionToRust 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/truedoomboom/IntroductionToRust
[INFO] finished tweaking git repo https://github.com/truedoomboom/IntroductionToRust
[INFO] tweaked toml for git repo https://github.com/truedoomboom/IntroductionToRust written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/truedoomboom/IntroductionToRust 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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] 2d2476306ce8804c573293a32bc511365ddeb20bdb0957c0fd070896077a336c
[INFO] running `"docker" "start" "-a" "2d2476306ce8804c573293a32bc511365ddeb20bdb0957c0fd070896077a336c"`
[INFO] [stderr]    Compiling RustProj v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/types.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let x = 1;
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `RustProj` 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: `rust_proj`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `"docker" "inspect" "2d2476306ce8804c573293a32bc511365ddeb20bdb0957c0fd070896077a336c"`
[INFO] running `"docker" "rm" "-f" "2d2476306ce8804c573293a32bc511365ddeb20bdb0957c0fd070896077a336c"`
[INFO] [stdout] 2d2476306ce8804c573293a32bc511365ddeb20bdb0957c0fd070896077a336c
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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] bd9bf2404d58ccb1113b3c895964cbbda0fc0c0b1b0915cbe3e598f7c3f3ccf5
[INFO] running `"docker" "start" "-a" "bd9bf2404d58ccb1113b3c895964cbbda0fc0c0b1b0915cbe3e598f7c3f3ccf5"`
[INFO] [stderr]    Compiling RustProj v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/types.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let x = 1;
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `RustProj` 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: `rust_proj`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `"docker" "inspect" "bd9bf2404d58ccb1113b3c895964cbbda0fc0c0b1b0915cbe3e598f7c3f3ccf5"`
[INFO] running `"docker" "rm" "-f" "bd9bf2404d58ccb1113b3c895964cbbda0fc0c0b1b0915cbe3e598f7c3f3ccf5"`
[INFO] [stdout] bd9bf2404d58ccb1113b3c895964cbbda0fc0c0b1b0915cbe3e598f7c3f3ccf5
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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] 11f3766cd26a101b22573d4352ad02c2021e0154b98706180e908ef23a68697d
[INFO] running `"docker" "start" "-a" "11f3766cd26a101b22573d4352ad02c2021e0154b98706180e908ef23a68697d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/RustProj-541243b59011c3c1
[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" "11f3766cd26a101b22573d4352ad02c2021e0154b98706180e908ef23a68697d"`
[INFO] running `"docker" "rm" "-f" "11f3766cd26a101b22573d4352ad02c2021e0154b98706180e908ef23a68697d"`
[INFO] [stdout] 11f3766cd26a101b22573d4352ad02c2021e0154b98706180e908ef23a68697d