[INFO] updating cached repository https://github.com/Luke-Draper/rust_coding_challenges
[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] e9427f8f60aec586083bc8d7bdcc5808b19abdc5
[INFO] testing Luke-Draper/rust_coding_challenges against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuke-Draper%2Frust_coding_challenges" "/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/Luke-Draper/rust_coding_challenges 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/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-6/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 `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "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-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=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] [stdout] 02788f59b7027ecb307566418e0f764df9d0da0d90e11372d0fe0a2a0fcdfdea
[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" "02788f59b7027ecb307566418e0f764df9d0da0d90e11372d0fe0a2a0fcdfdea"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust_coding_challenges v0.1.0 (/opt/rustwide/workdir)
[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 dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "02788f59b7027ecb307566418e0f764df9d0da0d90e11372d0fe0a2a0fcdfdea"`
[INFO] running `"docker" "rm" "-f" "02788f59b7027ecb307566418e0f764df9d0da0d90e11372d0fe0a2a0fcdfdea"`
[INFO] [stdout] 02788f59b7027ecb307566418e0f764df9d0da0d90e11372d0fe0a2a0fcdfdea
[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=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] b1e462235294e4e658f5671b01a8fa9afdc208ac10ddc1ed40bbf2970e2c96f0
[INFO] running `"docker" "start" "-a" "b1e462235294e4e658f5671b01a8fa9afdc208ac10ddc1ed40bbf2970e2c96f0"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust_coding_challenges v0.1.0 (/opt/rustwide/workdir)
[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 0.68s
[INFO] running `"docker" "inspect" "b1e462235294e4e658f5671b01a8fa9afdc208ac10ddc1ed40bbf2970e2c96f0"`
[INFO] running `"docker" "rm" "-f" "b1e462235294e4e658f5671b01a8fa9afdc208ac10ddc1ed40bbf2970e2c96f0"`
[INFO] [stdout] b1e462235294e4e658f5671b01a8fa9afdc208ac10ddc1ed40bbf2970e2c96f0
[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=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] e1b53f1f57c441f04aac87a303919882ef9f6dd89b119ad3f4852f2e961f1b72
[INFO] running `"docker" "start" "-a" "e1b53f1f57c441f04aac87a303919882ef9f6dd89b119ad3f4852f2e961f1b72"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_coding_challenges-ee6e0456736f0383
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test challenge_example::coding_challenge_test ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_2 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_3 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_4 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_1 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_2 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_3 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_5 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_5 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_hash_test_1 ... ok
[INFO] [stdout] test daily_challenge_1::coding_challenge_test_4 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e1b53f1f57c441f04aac87a303919882ef9f6dd89b119ad3f4852f2e961f1b72"`
[INFO] running `"docker" "rm" "-f" "e1b53f1f57c441f04aac87a303919882ef9f6dd89b119ad3f4852f2e961f1b72"`
[INFO] [stdout] e1b53f1f57c441f04aac87a303919882ef9f6dd89b119ad3f4852f2e961f1b72