[INFO] cloning repository https://github.com/mur6/learning-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mur6/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmur6%2Flearning-rust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmur6%2Flearning-rust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3c6a2b3380f285a48d6d5c0a7eff431425a81168
[INFO] testing mur6/learning-rust against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmur6%2Flearning-rust" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mur6/learning-rust 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/mur6/learning-rust
[INFO] finished tweaking git repo https://github.com/mur6/learning-rust
[INFO] tweaked toml for git repo https://github.com/mur6/learning-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/mur6/learning-rust 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 2239cd79fca14f1bc810a761022ee2f15ee813777074bd4087f26d2206177900
[INFO] running `"docker" "start" "-a" "2239cd79fca14f1bc810a761022ee2f15ee813777074bd4087f26d2206177900"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rand v0.4.1
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/main.rs:22:29
[INFO] [stderr]    |
[INFO] [stderr] 22 |         while a[i] > key && i >= 0 {
[INFO] [stderr]    |                             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.56s
[INFO] running `"docker" "inspect" "2239cd79fca14f1bc810a761022ee2f15ee813777074bd4087f26d2206177900"`
[INFO] running `"docker" "rm" "-f" "2239cd79fca14f1bc810a761022ee2f15ee813777074bd4087f26d2206177900"`
[INFO] [stdout] 2239cd79fca14f1bc810a761022ee2f15ee813777074bd4087f26d2206177900
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 5e5739e088ca490fe4e63d20ead5d7b1abd3246bd8957905094dc5788c7c435f
[INFO] running `"docker" "start" "-a" "5e5739e088ca490fe4e63d20ead5d7b1abd3246bd8957905094dc5788c7c435f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/main.rs:22:29
[INFO] [stderr]    |
[INFO] [stderr] 22 |         while a[i] > key && i >= 0 {
[INFO] [stderr]    |                             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "5e5739e088ca490fe4e63d20ead5d7b1abd3246bd8957905094dc5788c7c435f"`
[INFO] running `"docker" "rm" "-f" "5e5739e088ca490fe4e63d20ead5d7b1abd3246bd8957905094dc5788c7c435f"`
[INFO] [stdout] 5e5739e088ca490fe4e63d20ead5d7b1abd3246bd8957905094dc5788c7c435f
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 409952a4f138482005425ac1425e9c478f83004680c490f70d309cf69266c8cc
[INFO] running `"docker" "start" "-a" "409952a4f138482005425ac1425e9c478f83004680c490f70d309cf69266c8cc"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/main.rs:22:29
[INFO] [stderr]    |
[INFO] [stderr] 22 |         while a[i] > key && i >= 0 {
[INFO] [stderr]    |                             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/guessing_game-6591fc01c40ce4b5
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "409952a4f138482005425ac1425e9c478f83004680c490f70d309cf69266c8cc"`
[INFO] running `"docker" "rm" "-f" "409952a4f138482005425ac1425e9c478f83004680c490f70d309cf69266c8cc"`
[INFO] [stdout] 409952a4f138482005425ac1425e9c478f83004680c490f70d309cf69266c8cc