[INFO] fetching crate frontmatter 0.4.0...
[INFO] testing frontmatter-0.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate frontmatter 0.4.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate frontmatter 0.4.0 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 frontmatter 0.4.0
[INFO] finished tweaking crates.io crate frontmatter 0.4.0
[INFO] tweaked toml for crates.io crate frontmatter 0.4.0 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 60dce50547cd53602fba4199bc7375be435bd78fc87380d265d04b221b475faf
[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" "60dce50547cd53602fba4199bc7375be435bd78fc87380d265d04b221b475faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60dce50547cd53602fba4199bc7375be435bd78fc87380d265d04b221b475faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60dce50547cd53602fba4199bc7375be435bd78fc87380d265d04b221b475faf", kill_on_drop: false }`
[INFO] [stdout] 60dce50547cd53602fba4199bc7375be435bd78fc87380d265d04b221b475faf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] f14e86b7ff25aafb1392ffc4e6abb97aaa8ce91a664b5595dd9616b9cba2e7e0
[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" "f14e86b7ff25aafb1392ffc4e6abb97aaa8ce91a664b5595dd9616b9cba2e7e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling frontmatter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "f14e86b7ff25aafb1392ffc4e6abb97aaa8ce91a664b5595dd9616b9cba2e7e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f14e86b7ff25aafb1392ffc4e6abb97aaa8ce91a664b5595dd9616b9cba2e7e0", kill_on_drop: false }`
[INFO] [stdout] f14e86b7ff25aafb1392ffc4e6abb97aaa8ce91a664b5595dd9616b9cba2e7e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 2870d9be3d4b183c0dfb2f310702123fe5839ca3acaa0e3100c1f955289d9100
[INFO] running `Command { std: "docker" "start" "-a" "2870d9be3d4b183c0dfb2f310702123fe5839ca3acaa0e3100c1f955289d9100", kill_on_drop: false }`
[INFO] [stderr]    Compiling frontmatter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "2870d9be3d4b183c0dfb2f310702123fe5839ca3acaa0e3100c1f955289d9100", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2870d9be3d4b183c0dfb2f310702123fe5839ca3acaa0e3100c1f955289d9100", kill_on_drop: false }`
[INFO] [stdout] 2870d9be3d4b183c0dfb2f310702123fe5839ca3acaa0e3100c1f955289d9100
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 00b86670370052ed4cd3be12582dbca30427206ce57ff2430f5b420b0765f770
[INFO] running `Command { std: "docker" "start" "-a" "00b86670370052ed4cd3be12582dbca30427206ce57ff2430f5b420b0765f770", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/frontmatter-bb0e9e6881e9e4a1
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test_empty_find_content ... ok
[INFO] [stdout] test test_none_find_content ... ok
[INFO] [stdout] test test_valid_find_content ... ok
[INFO] [stdout] test test_none ... ok
[INFO] [stdout] test test_empty ... ok
[INFO] [stdout] test test_tests ... ok
[INFO] [stdout] test test_valid ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests frontmatter
[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" "00b86670370052ed4cd3be12582dbca30427206ce57ff2430f5b420b0765f770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00b86670370052ed4cd3be12582dbca30427206ce57ff2430f5b420b0765f770", kill_on_drop: false }`
[INFO] [stdout] 00b86670370052ed4cd3be12582dbca30427206ce57ff2430f5b420b0765f770