[INFO] updating cached repository marusama/hackerrank-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/marusama/hackerrank-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/marusama/hackerrank-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/marusama/hackerrank-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/marusama/hackerrank-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/marusama/hackerrank-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marusama/hackerrank-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marusama/hackerrank-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5727f32b88cfeef32d39d57bae87b8bdc7e5fb5f
[INFO] sha for GitHub repo marusama/hackerrank-rust: 5727f32b88cfeef32d39d57bae87b8bdc7e5fb5f
[INFO] validating manifest of marusama/hackerrank-rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of marusama/hackerrank-rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing marusama/hackerrank-rust
[INFO] finished frobbing marusama/hackerrank-rust
[INFO] frobbed toml for marusama/hackerrank-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/marusama/hackerrank-rust/Cargo.toml
[INFO] started frobbing marusama/hackerrank-rust
[INFO] finished frobbing marusama/hackerrank-rust
[INFO] frobbed toml for marusama/hackerrank-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marusama/hackerrank-rust/Cargo.toml
[INFO] crate marusama/hackerrank-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing marusama/hackerrank-rust against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marusama/hackerrank-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 2ebaaac63c016539f080ac944155fbf8c4b54a789dfe0147a57414d800653eb7
[INFO] running `"docker" "start" "-a" "2ebaaac63c016539f080ac944155fbf8c4b54a789dfe0147a57414d800653eb7"`
[INFO] [stderr]    Compiling hackerrank-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::vec`
[INFO] [stderr]  --> src/algorithms/warmup/compare_the_triplets.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::vec;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "2ebaaac63c016539f080ac944155fbf8c4b54a789dfe0147a57414d800653eb7"`
[INFO] running `"docker" "rm" "-f" "2ebaaac63c016539f080ac944155fbf8c4b54a789dfe0147a57414d800653eb7"`
[INFO] [stdout] 2ebaaac63c016539f080ac944155fbf8c4b54a789dfe0147a57414d800653eb7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marusama/hackerrank-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7a9a8bdaa837de69cd8069d8f64092f3b143fa8aafd0934f65ee91020064cd41
[INFO] running `"docker" "start" "-a" "7a9a8bdaa837de69cd8069d8f64092f3b143fa8aafd0934f65ee91020064cd41"`
[INFO] [stderr]    Compiling hackerrank-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::vec`
[INFO] [stderr]  --> src/algorithms/warmup/compare_the_triplets.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::vec;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "7a9a8bdaa837de69cd8069d8f64092f3b143fa8aafd0934f65ee91020064cd41"`
[INFO] running `"docker" "rm" "-f" "7a9a8bdaa837de69cd8069d8f64092f3b143fa8aafd0934f65ee91020064cd41"`
[INFO] [stdout] 7a9a8bdaa837de69cd8069d8f64092f3b143fa8aafd0934f65ee91020064cd41
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/marusama/hackerrank-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 9f0cc93c0b2e641a92d0d710b71a23470b47e5abf52bc4446cdc8faf5ed6326a
[INFO] running `"docker" "start" "-a" "9f0cc93c0b2e641a92d0d710b71a23470b47e5abf52bc4446cdc8faf5ed6326a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hackerrank_rust-c7cc630c2026c565
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test algorithms::warmup::compare_the_triplets::tests::test_compare ... 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" "9f0cc93c0b2e641a92d0d710b71a23470b47e5abf52bc4446cdc8faf5ed6326a"`
[INFO] running `"docker" "rm" "-f" "9f0cc93c0b2e641a92d0d710b71a23470b47e5abf52bc4446cdc8faf5ed6326a"`
[INFO] [stdout] 9f0cc93c0b2e641a92d0d710b71a23470b47e5abf52bc4446cdc8faf5ed6326a