[INFO] updating cached repository https://github.com/davidabernado/based-minigrep
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7b4e7c0b5be8afcb5c8e03b85bf48dec27bc2411
[INFO] testing davidabernado/based-minigrep against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidabernado%2Fbased-minigrep" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidabernado/based-minigrep on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/davidabernado/based-minigrep
[INFO] finished tweaking git repo https://github.com/davidabernado/based-minigrep
[INFO] tweaked toml for git repo https://github.com/davidabernado/based-minigrep written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/davidabernado/based-minigrep already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 3f30cd4be50562fca155f8cbd57dca4688d718e833d0f421fb63e5ca63ac95af
[INFO] running `"docker" "start" "-a" "3f30cd4be50562fca155f8cbd57dca4688d718e833d0f421fb63e5ca63ac95af"`
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling based_minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:26:60
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn read_file(filename: &str) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.21s
[INFO] running `"docker" "inspect" "3f30cd4be50562fca155f8cbd57dca4688d718e833d0f421fb63e5ca63ac95af"`
[INFO] running `"docker" "rm" "-f" "3f30cd4be50562fca155f8cbd57dca4688d718e833d0f421fb63e5ca63ac95af"`
[INFO] [stdout] 3f30cd4be50562fca155f8cbd57dca4688d718e833d0f421fb63e5ca63ac95af
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] aa76179cf684074b5bc2baf753d85a3484e355e1bf10b6a75dfec0d1ef8cbe09
[INFO] running `"docker" "start" "-a" "aa76179cf684074b5bc2baf753d85a3484e355e1bf10b6a75dfec0d1ef8cbe09"`
[INFO] [stderr]    Compiling based_minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:26:60
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn read_file(filename: &str) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> tests/test_grep.rs:14:39
[INFO] [stderr]    |
[INFO] [stderr] 14 |             search(&query, &contents, &flag)
[INFO] [stderr]    |                                       ^^^^^ expected enum `based_minigrep::grep::Flag`, found struct `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `&based_minigrep::grep::Flag`
[INFO] [stderr]               found type `&std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> tests/test_grep.rs:26:39
[INFO] [stderr]    |
[INFO] [stderr] 26 |             search(&query, &contents, &flag),
[INFO] [stderr]    |                                       ^^^^^ expected enum `based_minigrep::grep::Flag`, found struct `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `&based_minigrep::grep::Flag`
[INFO] [stderr]               found type `&std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `based_minigrep`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "aa76179cf684074b5bc2baf753d85a3484e355e1bf10b6a75dfec0d1ef8cbe09"`
[INFO] running `"docker" "rm" "-f" "aa76179cf684074b5bc2baf753d85a3484e355e1bf10b6a75dfec0d1ef8cbe09"`
[INFO] [stdout] aa76179cf684074b5bc2baf753d85a3484e355e1bf10b6a75dfec0d1ef8cbe09