[INFO] fetching crate classif 0.0.2...
[INFO] testing classif-0.0.2 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate classif 0.0.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate classif 0.0.2 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate classif 0.0.2
[INFO] finished tweaking crates.io crate classif 0.0.2
[INFO] tweaked toml for crates.io crate classif 0.0.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fe7578e19f84d8219144efa51305e55a91e54bda0fd520df234404f839bca3f1
[INFO] running `Command { std: "docker" "start" "-a" "fe7578e19f84d8219144efa51305e55a91e54bda0fd520df234404f839bca3f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe7578e19f84d8219144efa51305e55a91e54bda0fd520df234404f839bca3f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe7578e19f84d8219144efa51305e55a91e54bda0fd520df234404f839bca3f1", kill_on_drop: false }`
[INFO] [stdout] fe7578e19f84d8219144efa51305e55a91e54bda0fd520df234404f839bca3f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ec078074a9fb68dd76bfaa59141af3dda5ce023172ac3ebe6927d714100fee1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4ec078074a9fb68dd76bfaa59141af3dda5ce023172ac3ebe6927d714100fee1", kill_on_drop: false }`
[INFO] [stderr]    Compiling classif v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/jenks.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]  --> src/stats.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "4ec078074a9fb68dd76bfaa59141af3dda5ce023172ac3ebe6927d714100fee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ec078074a9fb68dd76bfaa59141af3dda5ce023172ac3ebe6927d714100fee1", kill_on_drop: false }`
[INFO] [stdout] 4ec078074a9fb68dd76bfaa59141af3dda5ce023172ac3ebe6927d714100fee1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 885da38e71552d0d6cf79bb7641efbb3196dc1613cc503cbf769ba74949258e1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "885da38e71552d0d6cf79bb7641efbb3196dc1613cc503cbf769ba74949258e1", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/jenks.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]  --> src/stats.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling classif v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/jenks.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]  --> src/stats.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "885da38e71552d0d6cf79bb7641efbb3196dc1613cc503cbf769ba74949258e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "885da38e71552d0d6cf79bb7641efbb3196dc1613cc503cbf769ba74949258e1", kill_on_drop: false }`
[INFO] [stdout] 885da38e71552d0d6cf79bb7641efbb3196dc1613cc503cbf769ba74949258e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 757061cfb889184de5d2f7a0bc8941259c877a3b16580b01632f852338253407
[INFO] running `Command { std: "docker" "start" "-a" "757061cfb889184de5d2f7a0bc8941259c877a3b16580b01632f852338253407", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/jenks.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `collect` that must be used
[INFO] [stderr]  --> src/stats.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: `classif` (lib) generated 2 warnings
[INFO] [stderr] warning: `classif` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/classif-ac90e60138413f38)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::test_arithmetic_breaks ... ok
[INFO] [stdout] test tests::test_quantiles_breaks ... ok
[INFO] [stdout] test tests::test_median ... ok
[INFO] [stdout] test tests::test_equal_interval_breaks ... ok
[INFO] [stdout] test tests::test_kurtosis ... ok
[INFO] [stdout] test tests::test_get_class_index ... ok
[INFO] [stdout] test tests::test_head_tail ... ok
[INFO] [stderr]    Doc-tests classif
[INFO] [stdout] test tests::test_root_mean_square ... ok
[INFO] [stdout] test tests::test_variance ... ok
[INFO] [stdout] test tests::test_jenks_breaks ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/classif.rs - classif::BoundsInfo (line 46) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.61s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "757061cfb889184de5d2f7a0bc8941259c877a3b16580b01632f852338253407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "757061cfb889184de5d2f7a0bc8941259c877a3b16580b01632f852338253407", kill_on_drop: false }`
[INFO] [stdout] 757061cfb889184de5d2f7a0bc8941259c877a3b16580b01632f852338253407