[INFO] crate shortcut 4.1.3 is already in cache
[INFO] checking shortcut-4.1.3 against nightly-2019-10-27 for pr-65897
[INFO] extracting crate shortcut 4.1.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate shortcut 4.1.3 on toolchain nightly-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate shortcut 4.1.3
[INFO] finished tweaking crates.io crate shortcut 4.1.3
[INFO] tweaked toml for crates.io crate shortcut 4.1.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-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" "+nightly-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5df313a6ac65cefbfc61614eef7f522b047402ec9cb5004160e4eb9d2354ce09
[INFO] running `"docker" "start" "-a" "5df313a6ac65cefbfc61614eef7f522b047402ec9cb5004160e4eb9d2354ce09"`
[INFO] [stderr]     Checking shortcut v4.1.3 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> benches/bench.rs:62:59
[INFO] [stderr]    |
[INFO] [stderr] 62 |             cmp: cmp::Comparison::Equal(cmp::Value::Const(format!("{}", i))),
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^ expected enum `std::borrow::Cow`, found struct `std::string::String`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::borrow::Cow<'_, _>`
[INFO] [stderr]               found type `std::string::String`
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `shortcut`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5df313a6ac65cefbfc61614eef7f522b047402ec9cb5004160e4eb9d2354ce09"`
[INFO] running `"docker" "rm" "-f" "5df313a6ac65cefbfc61614eef7f522b047402ec9cb5004160e4eb9d2354ce09"`
[INFO] [stdout] 5df313a6ac65cefbfc61614eef7f522b047402ec9cb5004160e4eb9d2354ce09