[INFO] crate struct-diff 0.2.3 is already in cache
[INFO] extracting crate struct-diff 0.2.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/struct-diff/0.2.3
[INFO] extracting crate struct-diff 0.2.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/struct-diff/0.2.3
[INFO] validating manifest of struct-diff-0.2.3 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of struct-diff-0.2.3 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing struct-diff-0.2.3
[INFO] finished frobbing struct-diff-0.2.3
[INFO] frobbed toml for struct-diff-0.2.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/struct-diff/0.2.3/Cargo.toml
[INFO] started frobbing struct-diff-0.2.3
[INFO] finished frobbing struct-diff-0.2.3
[INFO] frobbed toml for struct-diff-0.2.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/struct-diff/0.2.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing struct-diff-0.2.3 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/struct-diff/0.2.3:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4f30780fb763d8cb7ad31c359c95ebd2a78493f11942567a266c645478b56fd9
[INFO] running `"docker" "start" "-a" "4f30780fb763d8cb7ad31c359c95ebd2a78493f11942567a266c645478b56fd9"`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling struct-diff v0.2.3 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:14:19
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub left: &'a Debug,
[INFO] [stderr]    |                   ^^^^^ help: use `dyn`: `dyn Debug`
[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:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub right: &'a Debug,
[INFO] [stderr]    |                    ^^^^^ help: use `dyn`: `dyn Debug`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.74s
[INFO] running `"docker" "inspect" "4f30780fb763d8cb7ad31c359c95ebd2a78493f11942567a266c645478b56fd9"`
[INFO] running `"docker" "rm" "-f" "4f30780fb763d8cb7ad31c359c95ebd2a78493f11942567a266c645478b56fd9"`
[INFO] [stdout] 4f30780fb763d8cb7ad31c359c95ebd2a78493f11942567a266c645478b56fd9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/struct-diff/0.2.3:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] cafa56e321688d3ae830ea553c3c5737a7e192fd0d4755313e037f879e6ee0fe
[INFO] running `"docker" "start" "-a" "cafa56e321688d3ae830ea553c3c5737a7e192fd0d4755313e037f879e6ee0fe"`
[INFO] [stderr]    Compiling struct-diff v0.2.3 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:14:19
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub left: &'a Debug,
[INFO] [stderr]    |                   ^^^^^ help: use `dyn`: `dyn Debug`
[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:15:20
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub right: &'a Debug,
[INFO] [stderr]    |                    ^^^^^ help: use `dyn`: `dyn Debug`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `"docker" "inspect" "cafa56e321688d3ae830ea553c3c5737a7e192fd0d4755313e037f879e6ee0fe"`
[INFO] running `"docker" "rm" "-f" "cafa56e321688d3ae830ea553c3c5737a7e192fd0d4755313e037f879e6ee0fe"`
[INFO] [stdout] cafa56e321688d3ae830ea553c3c5737a7e192fd0d4755313e037f879e6ee0fe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/struct-diff/0.2.3:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 15e490f81d03e93552a01a70ef71582e95fb2f9e3a90bbe5a18f2f4e9f015a9e
[INFO] running `"docker" "start" "-a" "15e490f81d03e93552a01a70ef71582e95fb2f9e3a90bbe5a18f2f4e9f015a9e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/struct_diff-2d10c28638ea1870
[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 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" "15e490f81d03e93552a01a70ef71582e95fb2f9e3a90bbe5a18f2f4e9f015a9e"`
[INFO] running `"docker" "rm" "-f" "15e490f81d03e93552a01a70ef71582e95fb2f9e3a90bbe5a18f2f4e9f015a9e"`
[INFO] [stdout] 15e490f81d03e93552a01a70ef71582e95fb2f9e3a90bbe5a18f2f4e9f015a9e