[INFO] fetching crate vec_mut_scan 0.3.0...
[INFO] testing vec_mut_scan-0.3.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate vec_mut_scan 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate vec_mut_scan 0.3.0 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 vec_mut_scan 0.3.0
[INFO] finished tweaking crates.io crate vec_mut_scan 0.3.0
[INFO] tweaked toml for crates.io crate vec_mut_scan 0.3.0 written to /workspace/builds/worker-7/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] 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-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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 891e4da5b1fc895ec63d39a2d343f2c7ffebaa88a0101557c9dd3907c1bbf75f
[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" "891e4da5b1fc895ec63d39a2d343f2c7ffebaa88a0101557c9dd3907c1bbf75f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "891e4da5b1fc895ec63d39a2d343f2c7ffebaa88a0101557c9dd3907c1bbf75f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "891e4da5b1fc895ec63d39a2d343f2c7ffebaa88a0101557c9dd3907c1bbf75f", kill_on_drop: false }`
[INFO] [stdout] 891e4da5b1fc895ec63d39a2d343f2c7ffebaa88a0101557c9dd3907c1bbf75f
[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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50df9380e582c5cf296879b1acfa3317ede5c7880591b5de3c12c0dee9008445
[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" "50df9380e582c5cf296879b1acfa3317ede5c7880591b5de3c12c0dee9008445", kill_on_drop: false }`
[INFO] [stderr]    Compiling vec_mut_scan v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "50df9380e582c5cf296879b1acfa3317ede5c7880591b5de3c12c0dee9008445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50df9380e582c5cf296879b1acfa3317ede5c7880591b5de3c12c0dee9008445", kill_on_drop: false }`
[INFO] [stdout] 50df9380e582c5cf296879b1acfa3317ede5c7880591b5de3c12c0dee9008445
[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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df7a0d4af1d7799aab273958720ae904b47b19b023ee19900f3e688d897baf15
[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" "df7a0d4af1d7799aab273958720ae904b47b19b023ee19900f3e688d897baf15", kill_on_drop: false }`
[INFO] [stderr]    Compiling vec_mut_scan v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "df7a0d4af1d7799aab273958720ae904b47b19b023ee19900f3e688d897baf15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df7a0d4af1d7799aab273958720ae904b47b19b023ee19900f3e688d897baf15", kill_on_drop: false }`
[INFO] [stdout] df7a0d4af1d7799aab273958720ae904b47b19b023ee19900f3e688d897baf15
[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" "+beta-2021-01-01" "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] b84c9868f020e7b7f7c85d1c402bb53b550626d9acf1c0fb8740f97dd9f5eb36
[INFO] running `Command { std: "docker" "start" "-a" "b84c9868f020e7b7f7c85d1c402bb53b550626d9acf1c0fb8740f97dd9f5eb36", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/vec_mut_scan-20874ff2dcc29069
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::check_item_drops ... ok
[INFO] [stdout] test tests::check_slices_mut ... ok
[INFO] [stdout] test tests::check_slices ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vec_mut_scan
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b84c9868f020e7b7f7c85d1c402bb53b550626d9acf1c0fb8740f97dd9f5eb36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b84c9868f020e7b7f7c85d1c402bb53b550626d9acf1c0fb8740f97dd9f5eb36", kill_on_drop: false }`
[INFO] [stdout] b84c9868f020e7b7f7c85d1c402bb53b550626d9acf1c0fb8740f97dd9f5eb36