[INFO] fetching crate tcalc-rustyline 1.0.2...
[INFO] checking tcalc-rustyline-1.0.2 against beta-2019-10-27 for pr-65897
[INFO] extracting crate tcalc-rustyline 1.0.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tcalc-rustyline 1.0.2 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate tcalc-rustyline 1.0.2
[INFO] finished tweaking crates.io crate tcalc-rustyline 1.0.2
[INFO] tweaked toml for crates.io crate tcalc-rustyline 1.0.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+beta-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] 68943214c753c0fb3d427835027d6019076e7f74119897e15b845f39b505aa12
[INFO] running `"docker" "start" "-a" "68943214c753c0fb3d427835027d6019076e7f74119897e15b845f39b505aa12"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking tcalc-rustyline v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr]   --> examples/example.rs:31:43
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 rl.add_history_entry(line.as_ref());
[INFO] [stderr]    |                                           ^^^^^^
[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 `tcalc-rustyline`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "68943214c753c0fb3d427835027d6019076e7f74119897e15b845f39b505aa12"`
[INFO] running `"docker" "rm" "-f" "68943214c753c0fb3d427835027d6019076e7f74119897e15b845f39b505aa12"`
[INFO] [stdout] 68943214c753c0fb3d427835027d6019076e7f74119897e15b845f39b505aa12