[INFO] fetching crate squares-rnd 2.0.0...
[INFO] testing squares-rnd-2.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate squares-rnd 2.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate squares-rnd 2.0.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate squares-rnd 2.0.0
[INFO] finished tweaking crates.io crate squares-rnd 2.0.0
[INFO] tweaked toml for crates.io crate squares-rnd 2.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f3d9fcba35b86e89eb5c92bd05c760a4aa6ea39c6b3c40ceb87064615c698b5
[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" "3f3d9fcba35b86e89eb5c92bd05c760a4aa6ea39c6b3c40ceb87064615c698b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f3d9fcba35b86e89eb5c92bd05c760a4aa6ea39c6b3c40ceb87064615c698b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f3d9fcba35b86e89eb5c92bd05c760a4aa6ea39c6b3c40ceb87064615c698b5", kill_on_drop: false }`
[INFO] [stdout] 3f3d9fcba35b86e89eb5c92bd05c760a4aa6ea39c6b3c40ceb87064615c698b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7607e4c61a363bcc0ea37ee85ae60aef32e792fe4c73fea7d83d8cf20de0fb51
[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" "7607e4c61a363bcc0ea37ee85ae60aef32e792fe4c73fea7d83d8cf20de0fb51", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling squares-rnd v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "7607e4c61a363bcc0ea37ee85ae60aef32e792fe4c73fea7d83d8cf20de0fb51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7607e4c61a363bcc0ea37ee85ae60aef32e792fe4c73fea7d83d8cf20de0fb51", kill_on_drop: false }`
[INFO] [stdout] 7607e4c61a363bcc0ea37ee85ae60aef32e792fe4c73fea7d83d8cf20de0fb51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", 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] e4eae21ff88b15ffc187e91ac680a8df9d31e21fb203923a0a1dc65834c8eb42
[INFO] running `Command { std: "docker" "start" "-a" "e4eae21ff88b15ffc187e91ac680a8df9d31e21fb203923a0a1dc65834c8eb42", kill_on_drop: false }`
[INFO] [stderr]    Compiling squares-rnd v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "e4eae21ff88b15ffc187e91ac680a8df9d31e21fb203923a0a1dc65834c8eb42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4eae21ff88b15ffc187e91ac680a8df9d31e21fb203923a0a1dc65834c8eb42", kill_on_drop: false }`
[INFO] [stdout] e4eae21ff88b15ffc187e91ac680a8df9d31e21fb203923a0a1dc65834c8eb42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9b9492bab7d6e89fb643a0ce4d3a2ddfc15f6b844828bed641b25ba0b3cd882c
[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" "9b9492bab7d6e89fb643a0ce4d3a2ddfc15f6b844828bed641b25ba0b3cd882c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/squares_rnd-c9dc462d2e14f6f1
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rand-f57235197fd39e25
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test should_work ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests squares-rnd
[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 `Command { std: "docker" "inspect" "9b9492bab7d6e89fb643a0ce4d3a2ddfc15f6b844828bed641b25ba0b3cd882c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b9492bab7d6e89fb643a0ce4d3a2ddfc15f6b844828bed641b25ba0b3cd882c", kill_on_drop: false }`
[INFO] [stdout] 9b9492bab7d6e89fb643a0ce4d3a2ddfc15f6b844828bed641b25ba0b3cd882c