[INFO] cloning repository https://github.com/mwttg/rust-hints-and-tricks
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mwttg/rust-hints-and-tricks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwttg%2Frust-hints-and-tricks"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwttg%2Frust-hints-and-tricks'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1cb2e90031dc2ffbe7f65ef3a51b6e8b01df2fc4
[INFO] testing mwttg/rust-hints-and-tricks against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwttg%2Frust-hints-and-tricks" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mwttg/rust-hints-and-tricks on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mwttg/rust-hints-and-tricks
[INFO] finished tweaking git repo https://github.com/mwttg/rust-hints-and-tricks
[INFO] tweaked toml for git repo https://github.com/mwttg/rust-hints-and-tricks written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mwttg/rust-hints-and-tricks already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "+beta-2020-06-03" "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] 11b4cc25fbef8b730f4071fadb1e989852bc2d6c97b3a12bb473c483a089dbcb
[INFO] running `"docker" "start" "-a" "11b4cc25fbef8b730f4071fadb1e989852bc2d6c97b3a12bb473c483a089dbcb"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust-hints-and-tricks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "11b4cc25fbef8b730f4071fadb1e989852bc2d6c97b3a12bb473c483a089dbcb"`
[INFO] running `"docker" "rm" "-f" "11b4cc25fbef8b730f4071fadb1e989852bc2d6c97b3a12bb473c483a089dbcb"`
[INFO] [stdout] 11b4cc25fbef8b730f4071fadb1e989852bc2d6c97b3a12bb473c483a089dbcb
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9ce46318addc7634ad75d34f053b8cfab4c79cde1150722cb680300b8955c01c
[INFO] running `"docker" "start" "-a" "9ce46318addc7634ad75d34f053b8cfab4c79cde1150722cb680300b8955c01c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust-hints-and-tricks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "9ce46318addc7634ad75d34f053b8cfab4c79cde1150722cb680300b8955c01c"`
[INFO] running `"docker" "rm" "-f" "9ce46318addc7634ad75d34f053b8cfab4c79cde1150722cb680300b8955c01c"`
[INFO] [stdout] 9ce46318addc7634ad75d34f053b8cfab4c79cde1150722cb680300b8955c01c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d36e76c206eda4b6648db224bd17b12ba7162c6ea1fbc6dafc07ba09a3795eb3
[INFO] running `"docker" "start" "-a" "d36e76c206eda4b6648db224bd17b12ba7162c6ea1fbc6dafc07ba09a3795eb3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_hints_and_tricks-b17645b9c3f17f0e
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test collection::tests::extract_head_and_tail_from_array ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d36e76c206eda4b6648db224bd17b12ba7162c6ea1fbc6dafc07ba09a3795eb3"`
[INFO] running `"docker" "rm" "-f" "d36e76c206eda4b6648db224bd17b12ba7162c6ea1fbc6dafc07ba09a3795eb3"`
[INFO] [stdout] d36e76c206eda4b6648db224bd17b12ba7162c6ea1fbc6dafc07ba09a3795eb3