[INFO] updating cached repository https://github.com/AgustinCB/ruthless
[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] 863f7d937bc50a497fbfda569df553e0edcec4bf
[INFO] checking AgustinCB/ruthless against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgustinCB%2Fruthless" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AgustinCB/ruthless on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/AgustinCB/ruthless
[INFO] finished tweaking git repo https://github.com/AgustinCB/ruthless
[INFO] tweaked toml for git repo https://github.com/AgustinCB/ruthless written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/AgustinCB/ruthless already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] e6fe7118d3d0f712de796cdab1082d68cd597bacd911f7e4632d6d132a82f17e
[INFO] running `"docker" "start" "-a" "e6fe7118d3d0f712de796cdab1082d68cd597bacd911f7e4632d6d132a82f17e"`
[INFO] [stderr]    Compiling cc v1.0.31
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.4
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking tar v0.4.22
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]     Checking backtrace v0.3.14
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking ruthless v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: the trait bound `(): std::error::Error` is not satisfied
[INFO] [stderr]    --> src/oci_image.rs:617:52
[INFO] [stderr]     |
[INFO] [stderr] 617 |         let path = PathBuf::from_str(tar_file_path)?;
[INFO] [stderr]     |                                                    ^ the trait `std::error::Error` is not implemented for `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: required because of the requirements on the impl of `failure::Fail` for `()`
[INFO] [stderr]     = note: required because of the requirements on the impl of `std::convert::From<()>` for `failure::Error`
[INFO] [stderr]     = note: required by `std::convert::From::from`
[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 `ruthless`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0277]: the trait bound `(): std::error::Error` is not satisfied
[INFO] [stderr]    --> src/oci_image.rs:617:52
[INFO] [stderr]     |
[INFO] [stderr] 617 |         let path = PathBuf::from_str(tar_file_path)?;
[INFO] [stderr]     |                                                    ^ the trait `std::error::Error` is not implemented for `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: required because of the requirements on the impl of `failure::Fail` for `()`
[INFO] [stderr]     = note: required because of the requirements on the impl of `std::convert::From<()>` for `failure::Error`
[INFO] [stderr]     = note: required by `std::convert::From::from`
[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 `ruthless`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e6fe7118d3d0f712de796cdab1082d68cd597bacd911f7e4632d6d132a82f17e"`
[INFO] running `"docker" "rm" "-f" "e6fe7118d3d0f712de796cdab1082d68cd597bacd911f7e4632d6d132a82f17e"`
[INFO] [stdout] e6fe7118d3d0f712de796cdab1082d68cd597bacd911f7e4632d6d132a82f17e