[INFO] crate markdown-edit 0.1.0 is already in cache
[INFO] testing markdown-edit-0.1.0 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate markdown-edit 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate markdown-edit 0.1.0 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate markdown-edit 0.1.0
[INFO] finished tweaking crates.io crate markdown-edit 0.1.0
[INFO] tweaked toml for crates.io crate markdown-edit 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ec43caeb8c70a6ad563024e3084f131dad107e4703ab2cf6aa399450f76d360c
[INFO] running `"docker" "start" "-a" "ec43caeb8c70a6ad563024e3084f131dad107e4703ab2cf6aa399450f76d360c"`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling backtrace v0.3.46
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling pulldown-cmark-to-cmark v1.2.4
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling failure v0.1.7
[INFO] [stderr]    Compiling markdown-edit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: the trait bound `&pulldown_cmark::Event<'_>: std::borrow::Borrow<pulldown_cmark::parse::Event<'_>>` is not satisfied
[INFO] [stderr]    --> src/lib.rs:93:7
[INFO] [stderr]     |
[INFO] [stderr] 93  |       cmark(events.iter(), &mut buf, None)?;
[INFO] [stderr]     |       ^^^^^ the trait `std::borrow::Borrow<pulldown_cmark::parse::Event<'_>>` is not implemented for `&pulldown_cmark::Event<'_>`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pulldown-cmark-to-cmark-1.2.4/src/fmt.rs:408:8
[INFO] [stderr]     |
[INFO] [stderr] 408 |     E: Borrow<Event<'a>>,
[INFO] [stderr]     |        ----------------- required by this bound in `pulldown_cmark_to_cmark::fmt::cmark`
[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 `markdown-edit`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ec43caeb8c70a6ad563024e3084f131dad107e4703ab2cf6aa399450f76d360c"`
[INFO] running `"docker" "rm" "-f" "ec43caeb8c70a6ad563024e3084f131dad107e4703ab2cf6aa399450f76d360c"`
[INFO] [stdout] ec43caeb8c70a6ad563024e3084f131dad107e4703ab2cf6aa399450f76d360c