[INFO] crate tom 0.0.1 is already in cache
[INFO] extracting crate tom 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/tom/0.0.1
[INFO] extracting crate tom 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tom/0.0.1
[INFO] validating manifest of tom-0.0.1 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 tom-0.0.1 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 tom-0.0.1
[INFO] finished frobbing tom-0.0.1
[INFO] frobbed toml for tom-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/tom/0.0.1/Cargo.toml
[INFO] started frobbing tom-0.0.1
[INFO] finished frobbing tom-0.0.1
[INFO] frobbed toml for tom-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tom/0.0.1/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 tom-0.0.1 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/tom/0.0.1:/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] fb99d52c539e1b6f43ff3dc59021fa7eafbfd39b2694e77ab862cbf8196768b8
[INFO] running `"docker" "start" "-a" "fb99d52c539e1b6f43ff3dc59021fa7eafbfd39b2694e77ab862cbf8196768b8"`
[INFO] [stderr]    Compiling text_unit v0.1.9
[INFO] [stderr]    Compiling uncover v0.1.1
[INFO] [stderr]    Compiling string-interner v0.6.3
[INFO] [stderr]    Compiling m_lexer v0.0.4
[INFO] [stderr]    Compiling tom v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/visitor.rs:5:24
[INFO] [stderr]   |
[INFO] [stderr] 5 |     callbacks: Vec<Box<FnMut(&mut C, CstNode, &TomlDoc) + 'c>>,
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut C, CstNode, &TomlDoc) + 'c`
[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/visitor.rs:29:21
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let cb: Box<FnMut(&mut C, CstNode, &TomlDoc) + 'c> =
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut C, CstNode, &TomlDoc) + 'c`
[INFO] [stderr] 
[INFO] [stderr] error[E0282]: type annotations needed
[INFO] [stderr]    --> src/lib.rs:168:25
[INFO] [stderr]     |
[INFO] [stderr] 168 |                     len += (text.len() as u32).into();
[INFO] [stderr]     |                         ^^ cannot infer type
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0282`.
[INFO] [stderr] error: Could not compile `tom`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fb99d52c539e1b6f43ff3dc59021fa7eafbfd39b2694e77ab862cbf8196768b8"`
[INFO] running `"docker" "rm" "-f" "fb99d52c539e1b6f43ff3dc59021fa7eafbfd39b2694e77ab862cbf8196768b8"`
[INFO] [stdout] fb99d52c539e1b6f43ff3dc59021fa7eafbfd39b2694e77ab862cbf8196768b8