[INFO] updating cached repository https://github.com/veniamin-ilmer/compare-speed
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 9bda3f9dc6f8905569efb96391505d8f259fb00d
[INFO] checking veniamin-ilmer/compare-speed against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fveniamin-ilmer%2Fcompare-speed" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/veniamin-ilmer/compare-speed on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/veniamin-ilmer/compare-speed
[INFO] finished tweaking git repo https://github.com/veniamin-ilmer/compare-speed
[INFO] tweaked toml for git repo https://github.com/veniamin-ilmer/compare-speed written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/veniamin-ilmer/compare-speed already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 2657e20ecbe0687b4928e7126db0e866cbe0aeb5affd70c18ba41d724c3270c2
[INFO] running `"docker" "start" "-a" "2657e20ecbe0687b4928e7126db0e866cbe0aeb5affd70c18ba41d724c3270c2"`
[INFO] [stderr]    Compiling jetscii v0.4.4
[INFO] [stderr]     Checking xmlparser v0.8.1
[INFO] [stderr]     Checking defmac v0.1.3
[INFO] [stderr]     Checking simple_csv v0.0.15
[INFO] [stderr]     Checking dmsort v1.0.0
[INFO] [stderr]     Checking rdxsort v0.3.0
[INFO] [stderr]     Checking rust_quicksort v0.1.0
[INFO] [stderr]     Checking ironsort v0.1.0
[INFO] [stderr]     Checking afsort v0.3.1
[INFO] [stderr]     Checking dummy_xml v0.1.6
[INFO] [stderr]     Checking quick_sort v0.2.1
[INFO] [stderr]     Checking cycle-sort v0.2.0
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]     Checking quick-csv v0.1.6
[INFO] [stderr]     Checking galil-seiferas v0.1.5
[INFO] [stderr]     Checking nv-xml v0.1.3
[INFO] [stderr]    Compiling vek v0.9.11
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking uint v0.5.0
[INFO] [stderr]     Checking roxmltree v0.4.1
[INFO] [stderr]     Checking num-complex v0.2.3
[INFO] [stderr]     Checking subslice v0.2.2
[INFO] [stderr]     Checking twoway v0.2.1
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr] error[E0284]: type annotations needed: cannot resolve `<std::string::String as std::ops::Add<&_>>::Output == std::string::String`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/roxmltree-0.4.1/src/parse.rs:690:71
[INFO] [stderr]     |
[INFO] [stderr] 690 |                         *prev_text = Cow::Owned(prev_text.to_string() + text.borrow());
[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 E0284`.
[INFO] [stderr] error: could not compile `roxmltree`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2657e20ecbe0687b4928e7126db0e866cbe0aeb5affd70c18ba41d724c3270c2"`
[INFO] running `"docker" "rm" "-f" "2657e20ecbe0687b4928e7126db0e866cbe0aeb5affd70c18ba41d724c3270c2"`
[INFO] [stdout] 2657e20ecbe0687b4928e7126db0e866cbe0aeb5affd70c18ba41d724c3270c2