[INFO] updating cached repository https://github.com/chebykin/miner-test
[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] 571321d9a23b3baef33d15c0721e3c4225a8c8af
[INFO] checking chebykin/miner-test against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchebykin%2Fminer-test" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chebykin/miner-test 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/chebykin/miner-test
[INFO] finished tweaking git repo https://github.com/chebykin/miner-test
[INFO] tweaked toml for git repo https://github.com/chebykin/miner-test written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/chebykin/miner-test 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]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stdout] dd97b8ddb5f225bc02904974ccfc980543f81e756adc11926ad95fbcce287ec9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "dd97b8ddb5f225bc02904974ccfc980543f81e756adc11926ad95fbcce287ec9"`
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling bigint v4.3.0
[INFO] [stderr]     Checking serde v1.0.38
[INFO] [stderr]     Checking ethcore-bytes v0.1.0 (https://github.com/paritytech/parity?tag=v1.9.7#7919629f)
[INFO] [stderr]     Checking scoped-tls v0.1.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.0
[INFO] [stderr]    Compiling getopts v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling rustc-hex v1.0.0
[INFO] [stderr]     Checking hamming v0.1.3
[INFO] [stderr]     Checking edit-distance v2.0.1
[INFO] [stderr]     Checking primal-estimate v0.2.1
[INFO] [stderr]    Compiling crunchy v0.2.1
[INFO] [stderr]     Checking interleaved-ordered v0.1.1
[INFO] [stderr]     Checking protobuf v1.5.1
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking quick-error v1.2.1
[INFO] [stderr]     Checking subtle v0.5.1
[INFO] [stderr]     Checking siphasher v0.1.3
[INFO] [stderr]     Checking slab v0.2.0
[INFO] [stderr]     Checking macros v0.1.0 (https://github.com/paritytech/parity?tag=v1.9.7#7919629f)
[INFO] [stderr]     Checking spmc v0.2.2
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking table v0.1.0 (https://github.com/paritytech/parity?tag=v1.9.7#7919629f)
[INFO] [stderr]     Checking unexpected v0.1.0 (https://github.com/paritytech/parity?tag=v1.9.7#7919629f)
[INFO] [stderr]     Checking transient-hashmap v0.4.1
[INFO] [stderr]     Checking using_queue v0.1.0 (https://github.com/paritytech/parity?tag=v1.9.7#7919629f)
[INFO] [stderr]     Checking semantic_version v0.1.0 (https://github.com/paritytech/parity?tag=v1.9.7#7919629f)
[INFO] [stderr]     Checking isatty v0.1.7
[INFO] [stderr]     Checking memmap v0.5.2
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking tokio-executor v0.1.2
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking relay v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.5.5
[INFO] [stderr]    Compiling crc v1.7.0
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking base64 v0.9.0
[INFO] [stderr]    Compiling heck v0.2.1
[INFO] [stderr]     Checking app_dirs v1.2.1 (https://github.com/paritytech/app-dirs-rs#0b37f948)
[INFO] [stderr]     Checking primal-bit v0.2.4
[INFO] [stderr]     Checking ethcore-bloom-journal v0.1.0 (https://github.com/paritytech/parity?tag=v1.9.7#7919629f)
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking parking_lot_core v0.2.13
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling pulldown-cmark v0.0.3
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]     Checking primal-check v0.2.3
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking tokio-timer v0.2.1
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]     Checking primal-sieve v0.2.8
[INFO] [stderr]     Checking stats v0.1.0 (https://github.com/paritytech/parity?tag=v1.9.7#7919629f)
[INFO] [stderr]     Checking plain_hasher v0.1.0 (https://github.com/paritytech/parity?tag=v1.9.7#7919629f)
[INFO] [stderr] error[E0277]: cannot add `&std::borrow::Cow<'_, str>` to `std::string::String`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pulldown-cmark-0.0.3/src/utils.rs:45:30
[INFO] [stderr]    |
[INFO] [stderr] 45 |         Owned(a.into_owned() + &b)
[INFO] [stderr]    |                              ^ no implementation for `std::string::String + &std::borrow::Cow<'_, str>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::ops::Add<&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 `pulldown-cmark`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "dd97b8ddb5f225bc02904974ccfc980543f81e756adc11926ad95fbcce287ec9"`
[INFO] running `"docker" "rm" "-f" "dd97b8ddb5f225bc02904974ccfc980543f81e756adc11926ad95fbcce287ec9"`
[INFO] [stdout] dd97b8ddb5f225bc02904974ccfc980543f81e756adc11926ad95fbcce287ec9