[INFO] crate quilt 0.1.0 is already in cache
[INFO] checking quilt-0.1.0 against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] extracting crate quilt 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate quilt 0.1.0 on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate quilt 0.1.0
[INFO] finished tweaking crates.io crate quilt 0.1.0
[INFO] tweaked toml for crates.io crate quilt 0.1.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "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] a610139abf6bf8361518b9f1b98c49f57d954005b88b09cd6fdef1593217c3a8
[INFO] running `"docker" "start" "-a" "a610139abf6bf8361518b9f1b98c49f57d954005b88b09cd6fdef1593217c3a8"`
[INFO] [stderr]     Checking quilt_diff v0.1.1
[INFO] [stderr]     Checking askama_escape v0.1.0
[INFO] [stderr]     Checking quilt_graph v0.1.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking quilt_multimap v0.1.1
[INFO] [stderr]     Checking flexi_logger v0.10.7
[INFO] [stderr]     Checking quilt_partition v0.1.1
[INFO] [stderr] error[E0277]: cannot add-assign `&std::borrow::Cow<'_, str>` to `std::string::String`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/flexi_logger-0.10.7/src/writers/file_log_writer.rs:165:31
[INFO] [stderr]     |
[INFO] [stderr] 165 |         self.config.path_base += &progname;
[INFO] [stderr]     |                               ^^ no implementation for `std::string::String += &std::borrow::Cow<'_, str>`
[INFO] [stderr]     |
[INFO] [stderr]     = help: the trait `std::ops::AddAssign<&std::borrow::Cow<'_, str>>` is not implemented for `std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `flexi_logger`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a610139abf6bf8361518b9f1b98c49f57d954005b88b09cd6fdef1593217c3a8"`
[INFO] running `"docker" "rm" "-f" "a610139abf6bf8361518b9f1b98c49f57d954005b88b09cd6fdef1593217c3a8"`
[INFO] [stdout] a610139abf6bf8361518b9f1b98c49f57d954005b88b09cd6fdef1593217c3a8