[INFO] updating cached repository https://github.com/MindFlavor/bpb
[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] 3b384ae9b753379332855654a28f4091a751f89e
[INFO] testing MindFlavor/bpb against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FMindFlavor%2Fbpb" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MindFlavor/bpb 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/MindFlavor/bpb
[INFO] finished tweaking git repo https://github.com/MindFlavor/bpb
[INFO] tweaked toml for git repo https://github.com/MindFlavor/bpb written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/MindFlavor/bpb 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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] 4a446ea9a8d2a956c054bc5aef1129c9d4273e0649133664fae82199fc0eb3ec
[INFO] running `"docker" "start" "-a" "4a446ea9a8d2a956c054bc5aef1129c9d4273e0649133664fae82199fc0eb3ec"`
[INFO] [stderr]    Compiling serde_json v1.0.21
[INFO] [stderr]    Compiling bpb v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 | /         stc.fields
[INFO] [stderr] 63 | |             .iter()
[INFO] [stderr] 64 | |             .filter(|f| !f.optional)
[INFO] [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
[INFO] [stderr] 66 | |             .collect::<()>();
[INFO] [stderr]    | |_____________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.48s
[INFO] running `"docker" "inspect" "4a446ea9a8d2a956c054bc5aef1129c9d4273e0649133664fae82199fc0eb3ec"`
[INFO] running `"docker" "rm" "-f" "4a446ea9a8d2a956c054bc5aef1129c9d4273e0649133664fae82199fc0eb3ec"`
[INFO] [stdout] 4a446ea9a8d2a956c054bc5aef1129c9d4273e0649133664fae82199fc0eb3ec
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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] a509a3104a336d63a3d089b6b707a0789a4f2bdadb172ec73b70239e4af2214e
[INFO] running `"docker" "start" "-a" "a509a3104a336d63a3d089b6b707a0789a4f2bdadb172ec73b70239e4af2214e"`
[INFO] [stderr]    Compiling bpb v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 | /         stc.fields
[INFO] [stderr] 63 | |             .iter()
[INFO] [stderr] 64 | |             .filter(|f| !f.optional)
[INFO] [stderr] 65 | |             .map(|bt| abt.push(bt.builder_type.clone().unwrap()))
[INFO] [stderr] 66 | |             .collect::<()>();
[INFO] [stderr]    | |_____________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.64s
[INFO] running `"docker" "inspect" "a509a3104a336d63a3d089b6b707a0789a4f2bdadb172ec73b70239e4af2214e"`
[INFO] running `"docker" "rm" "-f" "a509a3104a336d63a3d089b6b707a0789a4f2bdadb172ec73b70239e4af2214e"`
[INFO] [stdout] a509a3104a336d63a3d089b6b707a0789a4f2bdadb172ec73b70239e4af2214e
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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] 90ccdd1619aa1120ea0142462adb73a632ed231927931c8227ac67997b0d66eb
[INFO] running `"docker" "start" "-a" "90ccdd1619aa1120ea0142462adb73a632ed231927931c8227ac67997b0d66eb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bpb-aed331956a50d940
[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" "90ccdd1619aa1120ea0142462adb73a632ed231927931c8227ac67997b0d66eb"`
[INFO] running `"docker" "rm" "-f" "90ccdd1619aa1120ea0142462adb73a632ed231927931c8227ac67997b0d66eb"`
[INFO] [stdout] 90ccdd1619aa1120ea0142462adb73a632ed231927931c8227ac67997b0d66eb