[INFO] fetching crate slog-struct-diff 0.1.0...
[INFO] extracting crate slog-struct-diff 0.1.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/slog-struct-diff/0.1.0
[INFO] extracting crate slog-struct-diff 0.1.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/slog-struct-diff/0.1.0
[INFO] validating manifest of slog-struct-diff-0.1.0 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of slog-struct-diff-0.1.0 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing slog-struct-diff-0.1.0
[INFO] finished frobbing slog-struct-diff-0.1.0
[INFO] frobbed toml for slog-struct-diff-0.1.0 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/slog-struct-diff/0.1.0/Cargo.toml
[INFO] started frobbing slog-struct-diff-0.1.0
[INFO] finished frobbing slog-struct-diff-0.1.0
[INFO] frobbed toml for slog-struct-diff-0.1.0 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/slog-struct-diff/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded struct-diff v0.2.3
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing slog-struct-diff-0.1.0 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/slog-struct-diff/0.1.0:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 89fe6681f52a94885c80d7ba75aca85f95438046eed2ce849a3018a4a4559d3f
[INFO] running `"docker" "start" "-a" "89fe6681f52a94885c80d7ba75aca85f95438046eed2ce849a3018a4a4559d3f"`
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling struct-diff v0.2.3
[INFO] [stderr]    Compiling slog-struct-diff v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Diff`
[INFO] [stderr]  --> src/lib.rs:4:19
[INFO] [stderr]   |
[INFO] [stderr] 4 | use struct_diff::{Diff, Difference};
[INFO] [stderr]   |                   ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:15:26
[INFO] [stderr]    |
[INFO] [stderr] 15 |         serializer: &mut Serializer,
[INFO] [stderr]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[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/lib.rs:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 |         serializer: &mut Serializer,
[INFO] [stderr]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.21s
[INFO] running `"docker" "inspect" "89fe6681f52a94885c80d7ba75aca85f95438046eed2ce849a3018a4a4559d3f"`
[INFO] running `"docker" "rm" "-f" "89fe6681f52a94885c80d7ba75aca85f95438046eed2ce849a3018a4a4559d3f"`
[INFO] [stdout] 89fe6681f52a94885c80d7ba75aca85f95438046eed2ce849a3018a4a4559d3f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/slog-struct-diff/0.1.0:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] e74ec0afd9375a541cff2f1d3ba6e0ca6025de5a26d5c619a02bd34048a43515
[INFO] running `"docker" "start" "-a" "e74ec0afd9375a541cff2f1d3ba6e0ca6025de5a26d5c619a02bd34048a43515"`
[INFO] [stderr]    Compiling slog-struct-diff v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Diff`
[INFO] [stderr]  --> src/lib.rs:4:19
[INFO] [stderr]   |
[INFO] [stderr] 4 | use struct_diff::{Diff, Difference};
[INFO] [stderr]   |                   ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:15:26
[INFO] [stderr]    |
[INFO] [stderr] 15 |         serializer: &mut Serializer,
[INFO] [stderr]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[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/lib.rs:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 |         serializer: &mut Serializer,
[INFO] [stderr]    |                          ^^^^^^^^^^ help: use `dyn`: `dyn Serializer`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `"docker" "inspect" "e74ec0afd9375a541cff2f1d3ba6e0ca6025de5a26d5c619a02bd34048a43515"`
[INFO] running `"docker" "rm" "-f" "e74ec0afd9375a541cff2f1d3ba6e0ca6025de5a26d5c619a02bd34048a43515"`
[INFO] [stdout] e74ec0afd9375a541cff2f1d3ba6e0ca6025de5a26d5c619a02bd34048a43515
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/slog-struct-diff/0.1.0:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] 4ab619cbf942a03f6b5939750619b88bc8124d8ed0d7bbfe5de597736e6ba9d7
[INFO] running `"docker" "start" "-a" "4ab619cbf942a03f6b5939750619b88bc8124d8ed0d7bbfe5de597736e6ba9d7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/slog_struct_diff-f9f4c8383a1d6e20
[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 slog-struct-diff
[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" "4ab619cbf942a03f6b5939750619b88bc8124d8ed0d7bbfe5de597736e6ba9d7"`
[INFO] running `"docker" "rm" "-f" "4ab619cbf942a03f6b5939750619b88bc8124d8ed0d7bbfe5de597736e6ba9d7"`
[INFO] [stdout] 4ab619cbf942a03f6b5939750619b88bc8124d8ed0d7bbfe5de597736e6ba9d7