[INFO] fetching crate linreg 0.2.0...
[INFO] testing linreg-0.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate linreg 0.2.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate linreg 0.2.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linreg 0.2.0
[INFO] finished tweaking crates.io crate linreg 0.2.0
[INFO] tweaked toml for crates.io crate linreg 0.2.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1451f20fd4efe8c6d217b9e90c608f89243332641a97b1bffc9daddf73141314
[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" "1451f20fd4efe8c6d217b9e90c608f89243332641a97b1bffc9daddf73141314", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1451f20fd4efe8c6d217b9e90c608f89243332641a97b1bffc9daddf73141314", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1451f20fd4efe8c6d217b9e90c608f89243332641a97b1bffc9daddf73141314", kill_on_drop: false }`
[INFO] [stdout] 1451f20fd4efe8c6d217b9e90c608f89243332641a97b1bffc9daddf73141314
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d5eaea92386e721b2bf539fffbfe9767e504a705d59106dedd90555c476dc7f
[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" "4d5eaea92386e721b2bf539fffbfe9767e504a705d59106dedd90555c476dc7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling displaydoc v0.1.7
[INFO] [stderr]    Compiling linreg v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.47s
[INFO] running `Command { std: "docker" "inspect" "4d5eaea92386e721b2bf539fffbfe9767e504a705d59106dedd90555c476dc7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5eaea92386e721b2bf539fffbfe9767e504a705d59106dedd90555c476dc7f", kill_on_drop: false }`
[INFO] [stdout] 4d5eaea92386e721b2bf539fffbfe9767e504a705d59106dedd90555c476dc7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52109f3fd7ea24249410511d24cd309aace32cc5123dea6a8fc8a8c4296aa835
[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" "52109f3fd7ea24249410511d24cd309aace32cc5123dea6a8fc8a8c4296aa835", kill_on_drop: false }`
[INFO] [stderr]    Compiling linreg v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "52109f3fd7ea24249410511d24cd309aace32cc5123dea6a8fc8a8c4296aa835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52109f3fd7ea24249410511d24cd309aace32cc5123dea6a8fc8a8c4296aa835", kill_on_drop: false }`
[INFO] [stdout] 52109f3fd7ea24249410511d24cd309aace32cc5123dea6a8fc8a8c4296aa835
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fd5f227b9730322e4c6f75b59f8862c767e7476e6cce6547b7e95fade0a09d13
[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" "fd5f227b9730322e4c6f75b59f8862c767e7476e6cce6547b7e95fade0a09d13", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/linreg-a269398f6ded021e
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::float_slices_regression ... ok
[INFO] [stdout] test tests::float_tuples_regression ... ok
[INFO] [stdout] test tests::lin_reg_imprecises_vs_linreg ... ok
[INFO] [stdout] test tests::int_slices_regression ... ok
[INFO] [stdout] test tests::int_tuples_regression ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests linreg
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.85s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fd5f227b9730322e4c6f75b59f8862c767e7476e6cce6547b7e95fade0a09d13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd5f227b9730322e4c6f75b59f8862c767e7476e6cce6547b7e95fade0a09d13", kill_on_drop: false }`
[INFO] [stdout] fd5f227b9730322e4c6f75b59f8862c767e7476e6cce6547b7e95fade0a09d13