[INFO] fetching crate rust_52_projects 0.1.2...
[INFO] testing rust_52_projects-0.1.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate rust_52_projects 0.1.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate rust_52_projects 0.1.2 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 rust_52_projects 0.1.2
[INFO] finished tweaking crates.io crate rust_52_projects 0.1.2
[INFO] tweaked toml for crates.io crate rust_52_projects 0.1.2 written to /workspace/builds/worker-13/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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 2e5f13e0dc1320b0dbfc09243bb5e1ae117aaab578c5e1245242b9141db29c2f
[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" "2e5f13e0dc1320b0dbfc09243bb5e1ae117aaab578c5e1245242b9141db29c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e5f13e0dc1320b0dbfc09243bb5e1ae117aaab578c5e1245242b9141db29c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e5f13e0dc1320b0dbfc09243bb5e1ae117aaab578c5e1245242b9141db29c2f", kill_on_drop: false }`
[INFO] [stdout] 2e5f13e0dc1320b0dbfc09243bb5e1ae117aaab578c5e1245242b9141db29c2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 61ea88f20b0ad3c75169c51028c306563354fea2e7774373e0b0acb87b64b769
[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" "61ea88f20b0ad3c75169c51028c306563354fea2e7774373e0b0acb87b64b769", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_52_projects v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "61ea88f20b0ad3c75169c51028c306563354fea2e7774373e0b0acb87b64b769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61ea88f20b0ad3c75169c51028c306563354fea2e7774373e0b0acb87b64b769", kill_on_drop: false }`
[INFO] [stdout] 61ea88f20b0ad3c75169c51028c306563354fea2e7774373e0b0acb87b64b769
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] b9ce9396aacbe2d3d3c5df45914a7839e65eb890066e93c5250a96c449fe9536
[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" "b9ce9396aacbe2d3d3c5df45914a7839e65eb890066e93c5250a96c449fe9536", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_52_projects v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "b9ce9396aacbe2d3d3c5df45914a7839e65eb890066e93c5250a96c449fe9536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9ce9396aacbe2d3d3c5df45914a7839e65eb890066e93c5250a96c449fe9536", kill_on_drop: false }`
[INFO] [stdout] b9ce9396aacbe2d3d3c5df45914a7839e65eb890066e93c5250a96c449fe9536
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ace2daa246aedc8bd432423d9d27b3f9c0329ad9607f1f9f126e606f275a8efb
[INFO] running `Command { std: "docker" "start" "-a" "ace2daa246aedc8bd432423d9d27b3f9c0329ad9607f1f9f126e606f275a8efb", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_52_projects-f01d2484d7274249
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_factorial ... 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 rust_52_projects
[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" "ace2daa246aedc8bd432423d9d27b3f9c0329ad9607f1f9f126e606f275a8efb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ace2daa246aedc8bd432423d9d27b3f9c0329ad9607f1f9f126e606f275a8efb", kill_on_drop: false }`
[INFO] [stdout] ace2daa246aedc8bd432423d9d27b3f9c0329ad9607f1f9f126e606f275a8efb