[INFO] fetching crate matrices 0.1.0...
[INFO] testing matrices-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate matrices 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate matrices 0.1.0 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 matrices 0.1.0
[INFO] finished tweaking crates.io crate matrices 0.1.0
[INFO] tweaked toml for crates.io crate matrices 0.1.0 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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 9aabf4250348a8cce54925737ace5d7b10ca096a30b145423c952f859fbe1f51
[INFO] running `Command { std: "docker" "start" "-a" "9aabf4250348a8cce54925737ace5d7b10ca096a30b145423c952f859fbe1f51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9aabf4250348a8cce54925737ace5d7b10ca096a30b145423c952f859fbe1f51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aabf4250348a8cce54925737ace5d7b10ca096a30b145423c952f859fbe1f51", kill_on_drop: false }`
[INFO] [stdout] 9aabf4250348a8cce54925737ace5d7b10ca096a30b145423c952f859fbe1f51
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] f8cc350af4a67c970ded5f3ae185bbe8dbf22022c1e60264564fa6fab2956a34
[INFO] running `Command { std: "docker" "start" "-a" "f8cc350af4a67c970ded5f3ae185bbe8dbf22022c1e60264564fa6fab2956a34", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrices v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "f8cc350af4a67c970ded5f3ae185bbe8dbf22022c1e60264564fa6fab2956a34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8cc350af4a67c970ded5f3ae185bbe8dbf22022c1e60264564fa6fab2956a34", kill_on_drop: false }`
[INFO] [stdout] f8cc350af4a67c970ded5f3ae185bbe8dbf22022c1e60264564fa6fab2956a34
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71252a2c6547d4bee135ebee06e432a97f06ebb450ae5ffce9dc3c60dfec412f
[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" "71252a2c6547d4bee135ebee06e432a97f06ebb450ae5ffce9dc3c60dfec412f", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrices v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "71252a2c6547d4bee135ebee06e432a97f06ebb450ae5ffce9dc3c60dfec412f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71252a2c6547d4bee135ebee06e432a97f06ebb450ae5ffce9dc3c60dfec412f", kill_on_drop: false }`
[INFO] [stdout] 71252a2c6547d4bee135ebee06e432a97f06ebb450ae5ffce9dc3c60dfec412f
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] eca115d6fd41a9a7d8f82de24e76f24904353cb2cf86aacc90225b7386f38a38
[INFO] running `Command { std: "docker" "start" "-a" "eca115d6fd41a9a7d8f82de24e76f24904353cb2cf86aacc90225b7386f38a38", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/matrices-cf5d97bd60707555
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests matrices
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "eca115d6fd41a9a7d8f82de24e76f24904353cb2cf86aacc90225b7386f38a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eca115d6fd41a9a7d8f82de24e76f24904353cb2cf86aacc90225b7386f38a38", kill_on_drop: false }`
[INFO] [stdout] eca115d6fd41a9a7d8f82de24e76f24904353cb2cf86aacc90225b7386f38a38