[INFO] crate sophia 0.2.1 is already in cache
[INFO] extracting crate sophia 0.2.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/sophia/0.2.1
[INFO] extracting crate sophia 0.2.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sophia/0.2.1
[INFO] validating manifest of sophia-0.2.1 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 sophia-0.2.1 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 sophia-0.2.1
[INFO] finished frobbing sophia-0.2.1
[INFO] frobbed toml for sophia-0.2.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/sophia/0.2.1/Cargo.toml
[INFO] started frobbing sophia-0.2.1
[INFO] finished frobbing sophia-0.2.1
[INFO] frobbed toml for sophia-0.2.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sophia/0.2.1/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 sophia-0.2.1 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sophia/0.2.1:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 52454bc5cc9180f15df5f39be5c5d03de8480d5bb98fb7f5d1b8c4826eac4eb1
[INFO] running `"docker" "start" "-a" "52454bc5cc9180f15df5f39be5c5d03de8480d5bb98fb7f5d1b8c4826eac4eb1"`
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling resiter v0.3.0
[INFO] [stderr]    Compiling weak-table v0.2.3
[INFO] [stderr]    Compiling peg v0.5.7
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling rental-impl v0.5.4
[INFO] [stderr]    Compiling coercible_errors v0.1.4
[INFO] [stderr]    Compiling language-tag v0.9.0
[INFO] [stderr]    Compiling rental v0.5.4
[INFO] [stderr]    Compiling sophia v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/graph/traits.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     Box<Iterator<Item=GResult<'a, G, <G as Graph<'a>>::Triple>>+'a>;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=GResult<'a, G, <G as Graph<'a>>::Triple>>+'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/term/mod.rs:344:20
[INFO] [stderr]     |
[INFO] [stderr] 344 |         F: FnOnce(&Fn(&Term<U>) -> Term<U>) -> (),
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Term<U>) -> Term<U>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]   --> src/parsers/nt.rs:76:36
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 let trimmed = line.trim_left();
[INFO] [stderr]    |                                    ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]   --> src/parsers/nt.rs:84:65
[INFO] [stderr]    |
[INFO] [stderr] 84 |                 |line| parse_rule_from_line(&config, rule, line.trim_left()),
[INFO] [stderr]    |                                                                 ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr] 
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::From<&_>`
[INFO] [stderr]    --> src/term/mod.rs:108:26
[INFO] [stderr]     |
[INFO] [stderr] 108 |             BNode(id) => String::from(id.borrow()),
[INFO] [stderr]     |                          ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: required by `std::convert::From::from`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: Could not compile `sophia`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "52454bc5cc9180f15df5f39be5c5d03de8480d5bb98fb7f5d1b8c4826eac4eb1"`
[INFO] running `"docker" "rm" "-f" "52454bc5cc9180f15df5f39be5c5d03de8480d5bb98fb7f5d1b8c4826eac4eb1"`
[INFO] [stdout] 52454bc5cc9180f15df5f39be5c5d03de8480d5bb98fb7f5d1b8c4826eac4eb1