[INFO] cloning repository https://github.com/BurnySc2/leetcode-solutions
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BurnySc2/leetcode-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBurnySc2%2Fleetcode-solutions"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBurnySc2%2Fleetcode-solutions'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c2e1aafc81b7bc334846a2b10d14afafdb9cccca
[INFO] testing BurnySc2/leetcode-solutions against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBurnySc2%2Fleetcode-solutions" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BurnySc2/leetcode-solutions on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/BurnySc2/leetcode-solutions
[INFO] finished tweaking git repo https://github.com/BurnySc2/leetcode-solutions
[INFO] tweaked toml for git repo https://github.com/BurnySc2/leetcode-solutions written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/BurnySc2/leetcode-solutions already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.44.0" "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] 02da69cf8e751fd635c6223bf55967a74d302459fe277307e56bc4b8f1213b26
[INFO] running `"docker" "start" "-a" "02da69cf8e751fd635c6223bf55967a74d302459fe277307e56bc4b8f1213b26"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling leetcode-solutions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]  --> src/problems/p001_twosum.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 |                 if (nums[i] + nums[j] == target) {
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/problems/p007.rs:18:23
[INFO] [stderr]    |
[INFO] [stderr] 18 |             result += ((c as i64 - 48) * (10 as i64).pow(i as u32));
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `leetcode-solutions`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "02da69cf8e751fd635c6223bf55967a74d302459fe277307e56bc4b8f1213b26"`
[INFO] running `"docker" "rm" "-f" "02da69cf8e751fd635c6223bf55967a74d302459fe277307e56bc4b8f1213b26"`
[INFO] [stdout] 02da69cf8e751fd635c6223bf55967a74d302459fe277307e56bc4b8f1213b26