[INFO] updating cached repository lazear/rust-kmeans
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lazear/rust-kmeans
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lazear/rust-kmeans" "work/ex/beta-1.38-1/sources/1.37.0/gh/lazear/rust-kmeans"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lazear/rust-kmeans'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lazear/rust-kmeans" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lazear/rust-kmeans"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lazear/rust-kmeans'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 875af42f47cf62e74272cc594b8745ada781aae2
[INFO] sha for GitHub repo lazear/rust-kmeans: 875af42f47cf62e74272cc594b8745ada781aae2
[INFO] validating manifest of lazear/rust-kmeans 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 lazear/rust-kmeans 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 lazear/rust-kmeans
[INFO] finished frobbing lazear/rust-kmeans
[INFO] frobbed toml for lazear/rust-kmeans written to work/ex/beta-1.38-1/sources/1.37.0/gh/lazear/rust-kmeans/Cargo.toml
[INFO] started frobbing lazear/rust-kmeans
[INFO] finished frobbing lazear/rust-kmeans
[INFO] frobbed toml for lazear/rust-kmeans written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lazear/rust-kmeans/Cargo.toml
[INFO] crate lazear/rust-kmeans 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing lazear/rust-kmeans against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lazear/rust-kmeans:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] d5cfe80fc80b3abfd6589b8b874041767c42032f11b8e6a130f15a99737d6cd8
[INFO] running `"docker" "start" "-a" "d5cfe80fc80b3abfd6589b8b874041767c42032f11b8e6a130f15a99737d6cd8"`
[INFO] [stderr]    Compiling libc v0.2.29
[INFO] [stderr]    Compiling spreadsheet v0.1.0 (https://github.com/lazear/spreadsheet.git#5fc986b1)
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling rust-kmeans v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |     let i = mutex.lock().unwrap();
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:156:21
[INFO] [stderr]     |
[INFO] [stderr] 156 |     while let Some((i, row)) = enumerate.next() {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `K` should have a snake case name
[INFO] [stderr]    --> src/main.rs:205:9
[INFO] [stderr]     |
[INFO] [stderr] 205 |     for K in 1..6 {
[INFO] [stderr]     |         ^ help: convert the identifier to snake case: `k`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.22s
[INFO] running `"docker" "inspect" "d5cfe80fc80b3abfd6589b8b874041767c42032f11b8e6a130f15a99737d6cd8"`
[INFO] running `"docker" "rm" "-f" "d5cfe80fc80b3abfd6589b8b874041767c42032f11b8e6a130f15a99737d6cd8"`
[INFO] [stdout] d5cfe80fc80b3abfd6589b8b874041767c42032f11b8e6a130f15a99737d6cd8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lazear/rust-kmeans:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 85eab03744651b6e81c84525574af4fb54b2dd39fcbbff36f98ecdf87e51b1bf
[INFO] running `"docker" "start" "-a" "85eab03744651b6e81c84525574af4fb54b2dd39fcbbff36f98ecdf87e51b1bf"`
[INFO] [stderr]    Compiling rust-kmeans v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |     let i = mutex.lock().unwrap();
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:156:21
[INFO] [stderr]     |
[INFO] [stderr] 156 |     while let Some((i, row)) = enumerate.next() {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `K` should have a snake case name
[INFO] [stderr]    --> src/main.rs:205:9
[INFO] [stderr]     |
[INFO] [stderr] 205 |     for K in 1..6 {
[INFO] [stderr]     |         ^ help: convert the identifier to snake case: `k`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "85eab03744651b6e81c84525574af4fb54b2dd39fcbbff36f98ecdf87e51b1bf"`
[INFO] running `"docker" "rm" "-f" "85eab03744651b6e81c84525574af4fb54b2dd39fcbbff36f98ecdf87e51b1bf"`
[INFO] [stdout] 85eab03744651b6e81c84525574af4fb54b2dd39fcbbff36f98ecdf87e51b1bf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lazear/rust-kmeans:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] d5622173712e129fe0f026b3e2f9827b8b2a0b09bd51eaff250fd573a8f1273e
[INFO] running `"docker" "start" "-a" "d5622173712e129fe0f026b3e2f9827b8b2a0b09bd51eaff250fd573a8f1273e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_kmeans-7c73995153f887c6
[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" "d5622173712e129fe0f026b3e2f9827b8b2a0b09bd51eaff250fd573a8f1273e"`
[INFO] running `"docker" "rm" "-f" "d5622173712e129fe0f026b3e2f9827b8b2a0b09bd51eaff250fd573a8f1273e"`
[INFO] [stdout] d5622173712e129fe0f026b3e2f9827b8b2a0b09bd51eaff250fd573a8f1273e