[INFO] updating cached repository https://github.com/Luke-Draper/rust_coding_challenges
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9427f8f60aec586083bc8d7bdcc5808b19abdc5
[INFO] testing Luke-Draper/rust_coding_challenges against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuke-Draper%2Frust_coding_challenges" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Luke-Draper/rust_coding_challenges on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Luke-Draper/rust_coding_challenges
[INFO] finished tweaking git repo https://github.com/Luke-Draper/rust_coding_challenges
[INFO] tweaked toml for git repo https://github.com/Luke-Draper/rust_coding_challenges written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Luke-Draper/rust_coding_challenges already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6059bf40082b4916c8ed51a451a09e27166431d8887b5e741ae1d3b950895916
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6059bf40082b4916c8ed51a451a09e27166431d8887b5e741ae1d3b950895916", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6059bf40082b4916c8ed51a451a09e27166431d8887b5e741ae1d3b950895916", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6059bf40082b4916c8ed51a451a09e27166431d8887b5e741ae1d3b950895916", kill_on_drop: false }`
[INFO] [stdout] 6059bf40082b4916c8ed51a451a09e27166431d8887b5e741ae1d3b950895916
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ffa513bb1487e27a1d0afb5f456a0acde50a867f69b55c88ea333befd8219a1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1ffa513bb1487e27a1d0afb5f456a0acde50a867f69b55c88ea333befd8219a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_coding_challenges v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/daily_challenge_1.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 |             'inner: for j in (i + 1)..l.len() {
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "1ffa513bb1487e27a1d0afb5f456a0acde50a867f69b55c88ea333befd8219a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ffa513bb1487e27a1d0afb5f456a0acde50a867f69b55c88ea333befd8219a1", kill_on_drop: false }`
[INFO] [stdout] 1ffa513bb1487e27a1d0afb5f456a0acde50a867f69b55c88ea333befd8219a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c929a46daedb7fa2d40e9717f57eff9176f653343894f622efd73d416f31bef
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6c929a46daedb7fa2d40e9717f57eff9176f653343894f622efd73d416f31bef", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_coding_challenges v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/daily_challenge_1.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 |             'inner: for j in (i + 1)..l.len() {
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "6c929a46daedb7fa2d40e9717f57eff9176f653343894f622efd73d416f31bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c929a46daedb7fa2d40e9717f57eff9176f653343894f622efd73d416f31bef", kill_on_drop: false }`
[INFO] [stdout] 6c929a46daedb7fa2d40e9717f57eff9176f653343894f622efd73d416f31bef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 51550452fe328d847ce2b8d956fb2d4feb2671a2f2b7401a9cfeff821e6074c8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "51550452fe328d847ce2b8d956fb2d4feb2671a2f2b7401a9cfeff821e6074c8", kill_on_drop: false }`
[INFO] [stderr] warning: unused label
[INFO] [stderr]   --> src/daily_challenge_1.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 |             'inner: for j in (i + 1)..l.len() {
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_coding_challenges-372d94b798da87bf
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_4 ... ok
[INFO] [stdout] test challenge_example::coding_challenge_test ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_3 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_3 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_2 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_1 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_2 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_4 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_5 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_1 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_5 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "51550452fe328d847ce2b8d956fb2d4feb2671a2f2b7401a9cfeff821e6074c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51550452fe328d847ce2b8d956fb2d4feb2671a2f2b7401a9cfeff821e6074c8", kill_on_drop: false }`
[INFO] [stdout] 51550452fe328d847ce2b8d956fb2d4feb2671a2f2b7401a9cfeff821e6074c8