[INFO] crate serde-helpers 0.1.0 is already in cache
[INFO] testing serde-helpers-0.1.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate serde-helpers 0.1.0 into work/builds/worker-1/source
[INFO] validating manifest of crates.io crate serde-helpers 0.1.0 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 crates.io crate serde-helpers 0.1.0
[INFO] finished tweaking crates.io crate serde-helpers 0.1.0
[INFO] tweaked toml for crates.io crate serde-helpers 0.1.0 written to work/builds/worker-1/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] 2d43bc186b580bd3a6fc917d9500dae9c6f63c9fd028d2afd9eb9daddf86d8c8
[INFO] running `"docker" "start" "-a" "2d43bc186b580bd3a6fc917d9500dae9c6f63c9fd028d2afd9eb9daddf86d8c8"`
[INFO] [stderr]    Compiling serde-helpers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:24:23
[INFO] [stderr]    |
[INFO] [stderr] 24 |     cause: Option<Box<StdError>>,
[INFO] [stderr]    |                       ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:56:32
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stderr]    |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "2d43bc186b580bd3a6fc917d9500dae9c6f63c9fd028d2afd9eb9daddf86d8c8"`
[INFO] running `"docker" "rm" "-f" "2d43bc186b580bd3a6fc917d9500dae9c6f63c9fd028d2afd9eb9daddf86d8c8"`
[INFO] [stdout] 2d43bc186b580bd3a6fc917d9500dae9c6f63c9fd028d2afd9eb9daddf86d8c8
[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] 3c2b65f7815a810ccb72b0e5a22449dcf4df803c5ee6b1434f80c2858f2fa6a7
[INFO] running `"docker" "start" "-a" "3c2b65f7815a810ccb72b0e5a22449dcf4df803c5ee6b1434f80c2858f2fa6a7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] running `"docker" "inspect" "3c2b65f7815a810ccb72b0e5a22449dcf4df803c5ee6b1434f80c2858f2fa6a7"`
[INFO] running `"docker" "rm" "-f" "3c2b65f7815a810ccb72b0e5a22449dcf4df803c5ee6b1434f80c2858f2fa6a7"`
[INFO] [stdout] 3c2b65f7815a810ccb72b0e5a22449dcf4df803c5ee6b1434f80c2858f2fa6a7
[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] b34b800f698ead4d9dbd4d08714f1c682450165c1ed8b8157e84b7976a6090a9
[INFO] running `"docker" "start" "-a" "b34b800f698ead4d9dbd4d08714f1c682450165c1ed8b8157e84b7976a6090a9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] running `"docker" "inspect" "b34b800f698ead4d9dbd4d08714f1c682450165c1ed8b8157e84b7976a6090a9"`
[INFO] running `"docker" "rm" "-f" "b34b800f698ead4d9dbd4d08714f1c682450165c1ed8b8157e84b7976a6090a9"`
[INFO] [stdout] b34b800f698ead4d9dbd4d08714f1c682450165c1ed8b8157e84b7976a6090a9