[INFO] crate expr 0.0.1 is already in cache
[INFO] extracting crate expr 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/expr/0.0.1
[INFO] extracting crate expr 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/expr/0.0.1
[INFO] validating manifest of expr-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 expr-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 expr-0.0.1
[INFO] finished frobbing expr-0.0.1
[INFO] frobbed toml for expr-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/expr/0.0.1/Cargo.toml
[INFO] started frobbing expr-0.0.1
[INFO] finished frobbing expr-0.0.1
[INFO] frobbed toml for expr-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/expr/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 expr-0.0.1 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-0/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/expr/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] ba3fc7b80de9e809cc758fcce48c875e29d0e97b767d4e02be52c1c9945dfe96
[INFO] running `"docker" "start" "-a" "ba3fc7b80de9e809cc758fcce48c875e29d0e97b767d4e02be52c1c9945dfe96"`
[INFO] [stderr]    Compiling expr v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error: expected expression, found `]`
[INFO] [stderr]    --> src/expr.rs:163:12
[INFO] [stderr]     |
[INFO] [stderr] 163 |         if token[].contains(".") {
[INFO] [stderr]     |                  ^ expected expression
[INFO] [stderr] 
[INFO] [stderr] error: expected type, found `|`
[INFO] [stderr]    --> src/expr.rs:317:37
[INFO] [stderr]     |
[INFO] [stderr] 317 |     pub fn set_variables(&mut self, f: |&str| -> Val<T>) {
[INFO] [stderr]     |                                        ^ expected type
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `regex`
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | extern crate regex;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `expr`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ba3fc7b80de9e809cc758fcce48c875e29d0e97b767d4e02be52c1c9945dfe96"`
[INFO] running `"docker" "rm" "-f" "ba3fc7b80de9e809cc758fcce48c875e29d0e97b767d4e02be52c1c9945dfe96"`
[INFO] [stdout] ba3fc7b80de9e809cc758fcce48c875e29d0e97b767d4e02be52c1c9945dfe96