[INFO] fetching crate upside-down 0.1.0...
[INFO] testing upside-down-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate upside-down 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate upside-down 0.1.0 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 upside-down 0.1.0
[INFO] finished tweaking crates.io crate upside-down 0.1.0
[INFO] tweaked toml for crates.io crate upside-down 0.1.0 written to /workspace/builds/worker-6/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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] ae4b4a2ed8c65953d93e55e09828a811ac3def2b3f3ab7caf480daab456cea8b
[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" "ae4b4a2ed8c65953d93e55e09828a811ac3def2b3f3ab7caf480daab456cea8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae4b4a2ed8c65953d93e55e09828a811ac3def2b3f3ab7caf480daab456cea8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae4b4a2ed8c65953d93e55e09828a811ac3def2b3f3ab7caf480daab456cea8b", kill_on_drop: false }`
[INFO] [stdout] ae4b4a2ed8c65953d93e55e09828a811ac3def2b3f3ab7caf480daab456cea8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 12eac648cdf218d96ef2d7089c579a56e9385a9456234e1cf5d0fdb3633cc329
[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" "12eac648cdf218d96ef2d7089c579a56e9385a9456234e1cf5d0fdb3633cc329", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling upside-down v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "12eac648cdf218d96ef2d7089c579a56e9385a9456234e1cf5d0fdb3633cc329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12eac648cdf218d96ef2d7089c579a56e9385a9456234e1cf5d0fdb3633cc329", kill_on_drop: false }`
[INFO] [stdout] 12eac648cdf218d96ef2d7089c579a56e9385a9456234e1cf5d0fdb3633cc329
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 6f842f0f08e17c9c2d4abcb96b588a3364b34d7d606e2118ba3c5bd0769c1c2e
[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" "6f842f0f08e17c9c2d4abcb96b588a3364b34d7d606e2118ba3c5bd0769c1c2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling upside-down v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "6f842f0f08e17c9c2d4abcb96b588a3364b34d7d606e2118ba3c5bd0769c1c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f842f0f08e17c9c2d4abcb96b588a3364b34d7d606e2118ba3c5bd0769c1c2e", kill_on_drop: false }`
[INFO] [stdout] 6f842f0f08e17c9c2d4abcb96b588a3364b34d7d606e2118ba3c5bd0769c1c2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] f55ea599ba13650208e078fd441d43080df06a5bef3d5d0099acfcd8cbe1b180
[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" "f55ea599ba13650208e078fd441d43080df06a5bef3d5d0099acfcd8cbe1b180", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.36s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/upside_down-ae199792b264943b
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test upside_down::test::test_string_uppercase ... ok
[INFO] [stdout] test upside_down::test::test_string_lowercase ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f55ea599ba13650208e078fd441d43080df06a5bef3d5d0099acfcd8cbe1b180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f55ea599ba13650208e078fd441d43080df06a5bef3d5d0099acfcd8cbe1b180", kill_on_drop: false }`
[INFO] [stdout] f55ea599ba13650208e078fd441d43080df06a5bef3d5d0099acfcd8cbe1b180